From owner-gene-linkage@net.bio.net Sun Feb 01 22:00:00 1998 Path: biosci!agate!howland.erols.net!news-peer.sprintlink.net!news.sprintlink.net!Sprint!newsfeed.nacamar.de!news-kar1.dfn.de!news-fra1.dfn.de!News.Uni-Marburg.DE!not-for-mail From: ziegler@Mailer.Uni-Marburg.DE (Ziegler Andreas Dr.) Newsgroups: bionet.molbio.gene-linkage Subject: MAPMAKER/SIBS Exectuable Date: 2 Feb 1998 16:14:43 GMT Organization: HRZ Uni Marburg Lines: 10 Message-ID: <6b4rdj$5u8$1@surz03.HRZ.Uni-Marburg.DE> NNTP-Posting-Host: mailer.uni-marburg.de X-Newsreader: TIN [UNIX 1.3 BETA-950824-color PL0] Hi, has anybody out there successfully compiled MAPMAKER / SIBS for an IBM Risc System/6000 SP running with IBM AIX V. 4.1.5? I am interested in obtaining an executable because I could not successfully compile the code. Any hint would be gratefully appreciated. Thanks in advance Andreas email: ziegler@mailer.uni-marburg.de From owner-gene-linkage@net.bio.net Tue Feb 03 22:00:00 1998 Path: biosci!bcm.tmc.edu!news.msfc.nasa.gov!newsfeed.internetmci.com!206.229.87.25!news-peer.sprintlink.net!news.sprintlink.net!Sprint!howland.erols.net!portc02.blue.aol.com!pitt.edu!newsfeed.pitt.edu!watson.hgen.pitt.edu!dweeks From: "Daniel E. Weeks" Newsgroups: bionet.molbio.gene-linkage Subject: Wellcome Trust Summer School 25th-31st July 1998 Date: Wed, 4 Feb 1998 15:26:32 -0500 Organization: University of Pittsburgh Lines: 51 Message-ID: NNTP-Posting-Host: watson.hgen.pitt.edu Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII WELLCOME TRUST SUMMER SCHOOLS TWENTY FIRST ADVANCED COURSE HUMAN GENOME ANALYSIS: GENETIC ANALYSIS OF MULTIFACTORIAL DISEASES 25th - 31st July 1998 Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1RQ An intensive, six-day, computer-based course aimed at scientists actively involved in genetic analysis of multifactorial traits. Programme: For each of the following areas, we will discuss issues of power to detect linkage, optimal study design, use of software, and proper statistical analyses: 1. Qualitative traits: sib-pair methods 2. Qualitative traits: affected-relative methods 3. Quantitative traits: sib-pair methods 4. Quantitative traits: regressive models 5. Markov chain Monte Carlo approaches 6. Linkage disequilibrium: testing for association Teaching will take the form of lectures by invited speakers, informal tutorials, hands-on computer sessions and analysis of disease family data sets. There will also be an opportunity to analyse and discuss participants' own data sets. Course Organisers: DANIEL WEEKS, MARK LATHROP Confirmed Speakers: MARTIN FARRALL (Oxford), SIMON HEATH (Rockefeller), NATHAN KAPLAN (NIEHS), JURG OTT (Rockefeller) Participants: Applicants should be scientists at an advanced level of research (post-doctoral or equivalent). Documentation verifying that the applicant is actively engaged in a linkage or family-based association study (animal/human) must be provided with the application. The course is subsidised by the Wellcome Trust for scientists based in academic institutions anywhere in the world. This is a residential course, without exception, and there is a charge of 375 pounds towards board and lodging. Applications: There are no formal application forms, but applicants should send a hard copy of their full CV together with a 300 word outline of their current and ongoing research plans, indicating the relevance of the course, to Dr Pelin Faik, Course Co-ordinator, Division of Biochemistry & Molecular Biology, UMDS, Guy's Campus, London Bridge SE1 9RT. Further information on http://www.umds.ac.uk/wlmg. Tel: +44 171 403 6998 Fax: +44 171 407 5281 Email: wss@umds.ac.uk. Closing date for applications is 3rd April 1998 From owner-gene-linkage@net.bio.net Thu Feb 05 22:00:00 1998 Path: biosci!bloom-beacon.mit.edu!news.kodak.com!news-pen-16.sprintlink.net!newsfeed.nysernet.net!news.nysernet.net!207.41.200.14!news-pen-14.sprintlink.net!206.229.87.26!news-east.sprintlink.net!news-peer.sprintlink.net!news.sprintlink.net!Sprint!news.maxwell.syr.edu!Supernews60!supernews.com!peerfeed.ncal.verio.net!news.walltech.com!uunet!in2.uu.net!nntp.earthlink.net!usenet From: "L. L. Read" Newsgroups: bionet.molbio.gene-linkage Subject: NY: Research Postdoc Date: Fri, 06 Feb 1998 13:43:42 -0500 Organization: EarthLink Network, Inc. Lines: 32 Message-ID: <34DB59DE.BA2C4F8D@earthlink.net> NNTP-Posting-Host: 153.37.128.32 Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 4.02 [en] (Win95; I) Post-doctoral Research Associates Psychiatric and Neurological Disorders National Institute of Health, New York State Office of Mental Health, and Industry supported program in development of therapies for psychiatric and neurological disorders targeted at plasma regulation of neurotransmitter precursor metabolism seeks to fill post doctoral /research associate position(s). Successful candidate(s) will work in clinical studies in genetics, and in all phases of treatment development including trials, mechanistic studies, and meeting patent and regulatory agency requirements. Strong organizational/communication skills and strong experimental backgrounds with demonstrated accomplishments in genetics, neurochemistry, or nutritional sciences required. MD/Ph.D. welcome. Full or part time. Excellent benefits. Send CV and 3 academic/work-related references by fax 914-359-3239, or mail to Mary Ann Richardson, Ph D., N.S. Kline Institute for Psychiatric Research, 140 Old Orangeburg Road, Orangeburg, New York, 10962, No phone calls accepted. NY State OMH (AA/EEO employer). From owner-gene-linkage@net.bio.net Fri Feb 06 22:00:00 1998 Path: biosci!ukrv.de!jea From: jea@ukrv.de (erdmann) Newsgroups: bionet.molbio.gene-linkage Subject: relative risk/ odds ratio Date: 6 Feb 1998 17:00:07 -0800 Organization: BIOSCI International Newsgroups for Molecular Biology Lines: 6 Sender: daemon@net.bio.net Distribution: world Message-ID: <34DC2F02.7ABC@ukrv.de> Reply-To: jea@ukrv.de NNTP-Posting-Host: net.bio.net I have a problem to understand the difference between odds ratio and relative risk, is there someone who can explainit to me. thanks in advance J. Erdmann jea@ukrv.de From owner-gene-linkage@net.bio.net Sat Feb 07 22:00:00 1998 Path: biosci!agate!newsfeed.kornet.nm.kr!howland.erols.net!sunqbc.risq.qc.ca!news.uow.edu.au!metro!metro!news From: "Peter Thomson" Newsgroups: bionet.molbio.gene-linkage Subject: Re: relative risk/ odds ratio Date: 8 Feb 1998 23:21:02 GMT Organization: The University of Sydney, NSW, Australia Lines: 36 Distribution: inet Message-ID: <01bd34e8$4e7e50c0$0e224e81@Thyme.agric.usyd.edu.au> References: <34DC2F02.7ABC@ukrv.de> NNTP-Posting-Host: pc-a03-4.agric.usyd.edu.au X-Newsreader: Microsoft Internet News 4.70.1161 In relation to odds rations and relative risks: Firstly, the risk of an event is the probability of that event occurring, say p. The odds of an event occurring is p/(1-p), and so if the event being studied is rare, then the risk is approximately the odds. Now say we are compring two groups, a reference group (group "0" say) and a treatment group, (group "1" say). The the relative risk (RR) is RR = risk(1)/risk(0) = p1 / p0 whereas the odds ratio (OR) is OR = odds(1) / odds(0) = [p1/(1-p1)] / [p0/(1-p0)]. Again, if the event is rare, then the OR and RR are very similar, and tend to interpreted similarly. Staistically, they tend to occur from two different modelling strategies. First, with modelling proportions (y "successes" in n "trials"), they are the natural output from logistic regression. Alternatively, with modelling counts (from a Poisson distribution), they are the ourtput from Poisson regression and log-linear models. Good descriptions of all of these can be found in: Kleinbaum, D.G., Kupper, L.L., and Morgenstern, H. (1982). Epidemiologic Research: Principles and Quantitative Methods. Belmont, California: Lifetime Learning. Peter Thomson University of Sydney erdmann wrote in article <34DC2F02.7ABC@ukrv.de>... > I have a problem to understand the difference between odds ratio and > relative risk, is there someone who can explainit to me. > thanks in advance > > J. Erdmann > jea@ukrv.de > From owner-gene-linkage@net.bio.net Mon Feb 09 22:00:00 1998 Path: biosci!webtv.net!not-for-mail From: IJBrockwaySr@webtv.net (Ivan Brockway) Newsgroups: bionet.molbio.gene-linkage Subject: cis- and trans- linkage Date: Tue, 10 Feb 1998 14:37:42 -0500 Organization: WebTV Subscriber Lines: 8 Message-ID: <6bqaa6$n6k$1@newsd-162.iap.bryant.webtv.net> NNTP-Posting-Host: localhost.webtv.net Mime-Version: 1.0 (WebTV) Content-Type: TEXT/PLAIN; CHARSET=US-ASCII Content-Transfer-Encoding: 7BIT I'm a pre-med Bio. major at Norfolk State University. My 'Genetics' prof. wants us to find out what we can about cis- and trans- forms of linkage. All I've been able to find out in books I've found is how they relate to regulation of gene metabolism. Any help would be appreciated. Thank-you. Yours truly, Ivan J. Brockway From owner-gene-linkage@net.bio.net Fri Feb 13 22:00:00 1998 Path: biosci!fcs280s.ncifcrf.gov!cpk-news-feed4.bbnplanet.com!cpk-news-feed1.bbnplanet.com!cpk-news-hub1.bbnplanet.com!news.bbnplanet.com!howland.erols.net!news.maxwell.syr.edu!demos!news1.relcom.ru!kiae!relcom!news.open.by!newsserv From: webmaster@open.by Newsgroups: bionet.molbio.gene-linkage Subject: New Information Source about Belarus Date: 14 Feb 1998 13:18:45 +0200 Organization: unknown Lines: 50 Sender: news@news.open.by Distribution: world Message-ID: <199802141118.NAA10567@c2.open.by> Reply-To: webmaster@open.by NNTP-Posting-Host: dinah.open.by X-Return-Path: webmaster@open.by Dear Sirs, We are sorry to trouble you with this e-mail, but we hope that introduce to you a new information source about Belarus that, probably, could be very interesting for you. The analytical centre of "Belorusskaya Gazeta", an independent weekly newspaper based in Minsk, has the pleasure to present you a pilot issue of electronic information-analytical newsletter "Belarus Now: Politics. Economics. Finances." This first issue is composed of the materials of the last issue of "Belorusskaya Gazeta" in 1997, and presents mostly the results of the year. In March, 1998 "Belarus Now" will be issued weekly on a regular basis, subscription will also start in March. Before that, in February, you will find a few more free issues of the newsletter. While composing the newsletter we use mostly exclusive stories of "Belorusskaya Gazeta" staff writers, correspondents, observers and contributors. Also opinion polls, interviews of participants of most important events as well as articles and columns by leading Belarusian politicians and economists, most competent heads of industries and prominent persons in financial sector, statistical materials are published. Electronic information-analytical newsletter "Belarus Now: Politics. Economics. Finances" is distributed by subscription or WWW ( http://www.open.by/belarus-now/ ) and comprises: - surveys - analytical articles - interviews; opinion polls - news: facts and comment. Starting with the 5th of March it is issued weekly. The size is about 150 computer pages (600,000 bites) per month. Plan pay subscription. Your notes and wishes are welcome, we shall take them into account when composing the newsletter "Belarus Now". You can address your notes to "Belorusskaya Gazeta" office: - E-mail: dima@gazetbel.belpak.minsk.by - Post: Office 609, 17-a, Kalvariyskaya str., Minsk 220004 Belarus - Fax: +375(17)220-40-50, 223-33-73 - http://www.open.by/belarus-now/ From owner-gene-linkage@net.bio.net Sat Feb 14 22:00:00 1998 Path: biosci!daresbury!uninett.no!news.maxwell.syr.edu!news.eecs.umich.edu!newshub.tc.umn.edu!newsstand.tc.umn.edu!lenti From: dean@lenti.med.umn.edu (Dean Flanders) Newsgroups: bionet.molbio.gene-linkage Subject: BIONET.MOLBIO.GENE-LINKAGE.FAQ Date: 15 Feb 1998 06:00:23 GMT Organization: University of MN, Medical School Lines: 3 Message-ID: <6c609n$ch6@epx.cis.umn.edu> NNTP-Posting-Host: lenti.med.umn.edu Originator: dean@lenti.med.umn.edu lynx: Can't access start file http://lenti.med.umn.edu/linkage/gene-lin.html EOF From owner-gene-linkage@net.bio.net Sat Feb 14 22:00:00 1998 Path: biosci!internet!biosci!not-for-mail From: biohelp (BIOSCI Administrator) Newsgroups: bionet.molbio.gene-linkage Subject: BIOSCI/bionet miniFAQ & Fundraiser Date: 15 Feb 1998 02:00:06 -0800 Organization: BIOSCI International Newsgroups for Molecular Biology Lines: 233 Sender: daemon@net.bio.net Distribution: world Message-ID: <199802151000.CAA03652@net.bio.net> NNTP-Posting-Host: net.bio.net (LAST REVISION: 30-JUL-95) This BIOSCI "miniFAQ" is designed to answer the questions that come up the *most frequently*. The main BIOSCI FAQ (Frequently Asked Questions) is accessible on the World Wide Web at URL http://www.bio.net/. If you can not find an answer to your question in this or other documentation, the BIOSCI technical support staff answers e-mail queries sent to biosci-help@net.bio.net We can only answer questions about the use of the newsgroups and mailing lists. We unfortunately do not have the staff to do Internet information searches or answer scientific questions. Please post those to the appropriate BIOSCI/bionet newsgroups. Contents: -------- 0) BIOSCI NEEDS YOUR SUPPORT!! 1) Using the WWW to access the BIOSCI/bionet newsgroups. 2) What to do about "spams," i.e., junk mail, ads, etc. 3) Examples of subscribing and unsubscribing to the mailing lists. 4) The BIOSCI user address and research interest directory. 0) BIOSCI NEEDS YOUR SUPPORT!! ------------------------------ BIOSCI's government funding has been expended, and we are now operating solely from advertising revenue that we have raised from our Web site at http://www.bio.net/. We need just a few minutes of your time to help us serve you. You can do two important things which will take very little time for you individually and will immensely help us continue to help you. First, please use our WWW system at http://www.bio.net/ to access the archives. You can post or reply to messages via your Web browser as described in item #1 below. Your usage helps attract sponsors. If you contact any of our sponsors, please be sure to thank them for supporting BIOSCI. It is critical for them to get this feedback if they are to continue their sponsorship for the long term. Second, if you work for a company or organization that provides products or services of interest to the biology community, please pass this message on to your marketing or marketing communications department or other appropriate group. Please ask them to help support BIOSCI by sponsoring our Web site and explain the uses and benefits of the system to the biology community. If they are interested, they can then contact us for further information at our tech support address, biosci-help@net.bio.net. 1) Using the WWW to access the BIOSCI/bionet newsgroups. -------------------------------------------------------- As of 10 December 1995, all BIOSCI/bionet full newsgroups are accessible through the World Wide Web (WWW) at URL http://www.bio.net. One can read and reply publicly or privately to both recent postings and archived messages through one's Web browser if it is configured properly to send e-mail. Each newsgroup is equipped with its own WAIS index. The main BIOSCI home page also has access to the BIO-JOURNALS Table of Contents database WAIS index and the BIOSCI user address database described in another item further below. 2) What to do about "spams," i.e., junk mail, ads, etc. ------------------------------------------------------- BIOSCI is a set of parallel USENET newsgroups (the "bionet" groups), mailing lists, and a hypermail archive at URL http://www.bio.net/. The same postings are distributed on all media (except for a small number of mailing-list-only groups at net.bio.net). Unfortunately it is becoming a despicable practice on the Internet (by a few people out to make a fast buck) to do automated mass postings to thousands of newsgroups and mailing lists. These attempts to grab free advertising are refered to as "spams" in the usual, somewhat boneheaded, net terminology. USENET is more susceptible to this practice, and many spams originate on the USENET groups and then are passed on to the mailing lists. However, spammers also get lists of mailing addresses and hit these too, so neither medium is immune. What should you do personally if you get junk mail? --------------------------------------------------- Just delete it and move on without reading it further. Filing a protest is becoming increasingly useless because spammers are often disguising the addresses where the messages are sent from. Unless you really understand Internet mail systems, your attempt at protest by sending replies to the message will often end up being sent to the address of an innocent person that the spammer is victimizing. What can BIOSCI/bionet do to protect its newsgroups? ---------------------------------------------------- The only solution currently available is to moderate the newsgroup. If this newsgroup is already moderated, then you are in good shape. Moderation protects the USENET distribution from about 95% of the spams that are being sent to date and protects the mailing lists completely. Moderation means, however, that someone has to take the time to review each message before it goes out. We have set up software here that simply allows the moderator to forward to an address at net.bio.net messages that (s)he wishes to have distributed. This takes no more time than that needed to read the message and pass it on, say about 1 min. per message. Most newsgroups currently have a discussion leader who is responsible for their newsgroup. The discussions leaders and their e-mail addresses are listed in the BIOSCI Information Sheet which is available on the Web at http://www.bio.net/. If a newsgroup is being hit with too many junk postings, please contact the discussion leader for that group and see if there is interest in moderating the group. Please do not assume that by simply posting a complaint to the newsgroup itself, anyone on the BIOSCI staff will act on your complaint. With close to 100 newsgroups to run, the BIOSCI staff has to rely on the discussion leaders of each newsgroup to report problems directly to us at biosci-help@net.bio.net. We will moderate any of our newsgroups if the discussion leader tells us that the readership of the group wishes to do so and if a moderator is willing to do the work. For most BIOSCI/bionet groups, this entails only a few minutes of work each day. Moderating a newsgroup will resolve probably 95% of the junk postings on the USENET distribution. Unfortunately there are easy ways for determined spammers to override the moderation mechanism on USENET, but we can protect our e-mail subscribers from unwanted postings if the newsgroup is moderated. You can also access our newsgroups over the WWW at URL http://www.bio.net. While this Web interface will not stop spammers from trying to post to the groups, this will give you yet another way, besides using USENET news, to keep the junk out of your personal mail files. For those of you with local USENET news systems, the Web interface will also give you faster access to new newsgroups and recent postings. 3) Examples of subscribing and unsubscribing to the mailing lists. ------------------------------------------------------------------ PLEASE NOTE: The BIOSCI management does NOT act on subscription/unsubscription requests that are posted improperly to the newsgroups and mailing lists. People who do this only bother everyone on the lists to no avail. Please be sure to follow the proper procedures below. Gory details are in the BIOSCI Information sheets on the Web at http://www.bio.net. Below we give an example utilizing the METHODS-AND-REAGENTS list at both of our two BIOSCI sites: Users in the Americas and Pacific Rim countries who use the BIOSCI ------------------------------------------------------------------ node at computer net.bio.net: ---------------------------- A) Determine the "listname" which is the <=8 character mail address ^^^^^^^^^^^^^ for the group. These can be found in the BIOSCI Info. Sheet. For the METHODS-AND-REAGENTS group the mailing address is methods@net.bio.net. The listname is the portion of the address to the left of the @ sign, i.e., "methods". The listname is used with the "subscribe" and "unsubscribe" commands illustrated below. B) Mail all commands in the body of a mail message addressed to biosci-server@net.bio.net. Do NOT send commands to the newsgroup posting addresses! Leave the Subject: line blank, any text on it will be ignored. C) In the body of your message put one or more of the following commands with an "end" command on the last line, e.g., subscribe methods unsubscribe methods end Do NOT put your e-mail address or other text on these lines. The server only allows you to cancel your subscription if the address on your mail header matches the address on our mailing list. Please ask for help at biosci-help@net.bio.net if your address has changed, e.g., if you know you are on the list but the server tells you that you are not a member. Users in Europe, Africa, and Central Asia who use the BIOSCI node at -------------------------------------------------------------------- computer daresbury.ac.uk (also known as dl.ac.uk): ------------------------------------------------- To subscribe and unsubscribe to/from the BIOSCI lists, you need to specify the full USENET newsgroup name with "bionet-news." prepended. The USENET newsgroup names are listed in the BIOSCI Information sheet on the Web at http://www.bio.net/. For the METHODS-AND-REAGENTS list the USENET newsgroup name is bionet.molbio.methds-reagnts, thus the appropriate commands are sub bionet-news.bionet.molbio.methds-reagnts unsub bionet-news.bionet.molbio.methds-reagnts These commands are included in a message addressed to mxt@dl.ac.uk, NOT to the newsgroup mailing addresses. As usual, include the text in the body of the message as text on the Subject: line is ignored. To unsubscribe from all the lists at the UK node, use unsub bionet-news Please note that if the address in the list is different than the one in your mail message header, you will not be able to unsubscribe by this method. If you have problems, please mail biosci@daresbury.ac.uk. 4) The BIOSCI user address and research interest directory. ----------------------------------------------------------- Please take this opportunity to add your name, address, and research interest information to the BIOSCI User Address Database if you have not already done so. You can fill out the address form directly through our Web page at URL http://www.bio.net/adrform.html. The address database is reindexed nightly for WWW access (the URL is http://www.bio.net/). If you are not directly on the Internet but can reach it by e-mail, please use our waismail server to access the user directory. waismail use is described above. You can also request a user address form by e-mail from biosci-help@net.bio.net. Please check your database entry from time-to-time to see if your address information is still up-to-date. Because of our limited personnel resources, we ask that you resubmit a *complete* form to revise your entry; we only replace complete entries and do not have resources to edit old forms. From owner-gene-linkage@net.bio.net Mon Feb 16 22:00:00 1998 Path: biosci!agate!newsfeed.kornet.nm.kr!nntp.kreonet.re.kr!xfer.kren.nm.kr!newsfeed.dacom.co.kr!howland.erols.net!ix.netcom.com!news From: Sharon Schreiber Newsgroups: bionet.molbio.gene-linkage Subject: Heart Disease Risk Factors Date: Tue, 17 Feb 1998 14:39:47 -0500 Organization: GATE International, Incorporated Lines: 27 Message-ID: <34E9E783.D8FED315@gateintl.com> NNTP-Posting-Host: 205.186.155.50 Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-NETCOM-Date: Tue Feb 17 1:41:29 PM CST 1998 X-Mailer: Mozilla 4.0 [en] (Win95; I) X-Priority: 3 (Normal) Major risk factors include family history (genetic) , increasing age, smoking, high cholesterol, high blood pressure (hypertension), poor eating habits, obesity, inactivity and stress. For more information please contact Miami Heart Research Institute at http://www.miamiheartresearch.org -- Sharon J. Schreiber Director - Customer Service Relations GATE International, Incorporated 1001 Yamato Road Suite #405 Boca Raton, Florida 33487 Telephone: (561) 994-9499 Telefacsimile: (561) 994-9488 Web site: www.gateintl.com Email: sharons@gateintl.com From owner-gene-linkage@net.bio.net Thu Feb 19 22:00:00 1998 Path: biosci!medicine.adelaide.edu.au!rwallace From: rwallace@medicine.adelaide.edu.au (Robyn Wallace) Newsgroups: bionet.molbio.gene-linkage Subject: Linkage Newsletter - where is it? Date: 19 Feb 1998 17:53:03 -0800 Organization: BIOSCI International Newsgroups for Molecular Biology Lines: 14 Sender: daemon@net.bio.net Distribution: world Message-ID: <1.5.4.16.19980220122235.2db767c6@pulse.mad.adelaide.edu.au> NNTP-Posting-Host: net.bio.net Does anyone know how I can get on the email list for the "Linkage Newsletter" produced by Ott and others? =========================================== Robyn Wallace Department of Cytogenetics and Molecular Genetics Women's and Children's Hospital 72 King William Street NORTH ADELAIDE SA 5006 AUSTRALIA Ph: 618 8204 6442 Fax: 618 8204 7342 =========================================== From owner-gene-linkage@net.bio.net Sat Feb 28 22:00:00 1998 Path: biosci!fcs280s.ncifcrf.gov!cpk-news-feed4.bbnplanet.com!cpk-news-feed1.bbnplanet.com!cpk-news-hub1.bbnplanet.com!news.bbnplanet.com!newsfeed.internetmci.com!131.103.1.116!news2.chicago.iagnet.net!qual.net!iagnet.net!newsxfer3.itd.umich.edu!news.eecs.umich.edu!newshub.tc.umn.edu!newsstand.tc.umn.edu!lenti From: dean@lenti.med.umn.edu (Dean Flanders) Newsgroups: bionet.molbio.gene-linkage Subject: BIONET.MOLBIO.GENE-LINKAGE.FAQ Date: 1 Mar 1998 06:00:22 GMT Organization: University of MN, Medical School Lines: 1006 Message-ID: <6dathm$rh5@epx.cis.umn.edu> NNTP-Posting-Host: lenti.med.umn.edu Originator: dean@lenti.med.umn.edu BIONET.MOLBIO.GENE-LINKAGE FREQUENTLY ASKED QUESTIONS (FAQ) AS OF 1997/10/27 1.0) FAQ ADMINISTRATIVE INFORMATION [1995/05/18] 1.1) Where can I obtain and/or access the bionet.molbio.gene-linkage FAQ? [1995/03/01] 1.2) Who created the bionet.molbio.gene-linkage FAQ? [1995/03/01] 1.3) How can I help improve this FAQ? [1995/03/01] 1.4) Contributors to this FAQ. [1995/09/09] 1.5) When was the FAQ last updated? [1996/04/28] 2.0) INFORMATION RESOURCES 2.1) What anonymous FTP sites have programs/utilities useful for linkage analysis? [1995/03/01] 2.2) What books are helpful when learning about linkage analysis? [1995/03/01] 2.3) What WWW sites have useful linkage information? [1996/01/02] 2.4) What gopher sites have useful linkage information? [1995/03/01] 2.5) What "linkage centers" make information and assistance available to researchers? [1995/12/11] 2.6) What journals are useful for linkage analysis? [1995/06/02] 2.7) What courses are offered in linkage analysis? [1995/09/09] 3.0) GENE-LINKAGE SOFTWARE OVERVIEW 3.1) What database management programs do people use for linkage data? [1995/05/31] 3.2) What programs are available for pedigree drawing? [1995/04/01] 3.3) What linkage analysis helper programs are available? [1996/04/29] 3.4) Why are some programs used primarily for chromosome mapping, while others are used for disease mapping? [1995/03/01] 3.5) What programs are used for physical mapping? [1995/11/30] 3.6) What programs are used for disease gene mapping? [1995/09/07] 3.7) What programs are available for running genetic simulations? [1995/11/30] 3.8) What programs are available to help detect errors in linkage data? [1995/11/30] 3.9) What programs help me recode genetic markers? [1995/03/01] 4.0) LINKAGE PACKAGE SPECIFIC INFORMATION 4.1) How do I get my CEPH data into CRI-MAP format? [1995/03/01] 4.2) How do you calculate MAXHAP? [1995/09/09] 4.3) When should you use binary coding instead of numeric allele coding? [1995/03/01] 4.4) What do you do when allele frequencies do not add up to 1; for example, when alleles are not present in a pedigree under study? [1995/03/01] 4.5) I use LINKAGE and/or FASTLINK. Which references should I include in my papers? [1995/03/01] 4.6) What is recoding of alleles all about anyway? [1995/03/01] 4.7) What do you do when you get thetas greater than 0.5 when using linkage? [1996/22/01] 5.0) COMPUTER ADMINISTRATION AND OPTIMIZATION 5.1) How w can I increase the speed of the LINKAGE/FASTLINK package on my workstation? [1995/05/18] 6.0) MOLECULAR BIOLOGY ISSUES IN LINKAGE ANALYSIS 6.1) What screening sets are available for linkage analysis? [1995/09/14] 1.0) FAQ ADMINISTRATIVE INFORMATION 1.1) Where can I obtain the bionet.gene-linkage FAQ? [1995/03/01] It is available by anonymous FTP from lenti.med.umn.edu in /pub/linkage. The best way to view the FAQ is via the WWW, from http://lenti.med.umn.edu/linkage/linkage.html. The FAQ is also available via gopher at lenti.med.umn.edu in /Biologically Related Information/Linkage Analysis. The FAQ will also be posted in the USENET groups bionet.molbio.gene-linkage and news.answers the 1st and 15th of each month. 1.2) Who created the bionet.molbio.gene-linkage FAQ? [1995/03/01] Darrell Root (rootd@ohsu.edu) originally started the bionet.molbio.gene-linkage FAQ in May of 1994 in an attempt to share information and experiences that may be of use to other people involved in linkage analysis. I am Dean Flanders (dean@lenti.med.umn.edu), the current maintainer of the FAQ, and began my tenure in December of 1994. The FAQ will never serve as a short course in linkage analysis, but instead it will ideally be a place to help beginners get started in the area and to help experts not make the same mistakes as others. All of the information in this FAQ by no means comes completely from Darrell or me, but from a large number of people that work in the area of linkage analysis. Their names are listed at the end of this section of the FAQ. 1.3) How can I help improve this FAQ? [1995/03/01] Feel free to send any information that you think would be beneficial for other people who are just beginning in linkage or have been doing linkage for years to linkage@lenti.med.umn.edu. Also, if there is information you would like to see or errors in this FAQ please let us know by sending email to linkage@lenti.med.umn.edu. If you would like to see something changed or added to the FAQ please to send it in a format that can be quickly incorporated into the FAQ, such as correcting the errors in the section of the FAQ and emailing it back to the FAQ maintainer. 1.4) Contributors to this FAQ. [1995/09/09] David Adler, John Attwood, Michael Boehnke, Marcia Brott, Don Bowden, Michael Braverman, Lucien Bachner, Young B Choi, Kevin Crawford, Dave Curtis, Peter Doris, Bennett Dyke, David Featherstone, Dean Flanders, Jonathan Haines, Rob Harper, Pierre Janssens, David Kikuchi, Wentian Li, Tim Little, Tara Matise, Eli Meir, Mike Miller, Jurg Ott, Darrell Root, Alex Schaffer, Robert Stodola, Frank Visser, Dan Weeks, Ellen Wijsman, Scott Wildenberg, Matthias Wjst, and Kim Worley. 1.5) When was the FAQ last updated?[1996/04/29] The last update of the FAQ was on 1996/04/29. All sections should indicate what month and year they were last updated. In addition one can go to the list of updates that are maintained at http://lenti.med.umn.edu/linkage/gefaqup.html. This is a list in chronological order of updates with direct links to the updates in the FAQ. 2.0) INFORMATION RESOURCES 2.1) What anonymous-FTP sites have programs/utilities useful for linkage analysis? [1995/03/01] At present there is no one site that serves as a repository for all linkage software. So the best way of finding FTP site information is to read the software package information below, which should provide all of the necessary FTP information. 2.2) What books are helpful when learning about linkage analysis? [1995/03/01] Bishop, M. J. "Guide to Human Genome Computing." Academic Press, 1994. Davies, K. E. "Human Genetic Diseases - A Practical Approach." IRL Press, Oxford England and Washington, D.C., 1986. Dracopoli, N. C., Haines, J. L., Korf, B. R., Moir, D.T., Morton, C. C., Seidman, C. E., Seidman, J. G., Smith, D. R. "Current Protocols in Human Genetics." John Wiley and Sons, Inc., USA, 1994. Khoury, M. J., Beaty, T. H., and Cohen, B. H. "Fundamentals of Genetic Epidemiology." Oxford University Press, 1993. Ott, J. "Analysis of Human Genetic Linkage." Johns Hopkins University Press, 1991. Terwilliger, J. D. and Ott, J. "Handbook of Human Genetic Linkage," Johns Hopkins University Press, 1994. Thompson, E. A. "Pedigree Analysis in Human Genetics." Johns Hopkins University Press, Baltimore and London, 1986. 2.3) What WWW sites have useful linkage information? [1996/01/02] This is in no way an attempt to list the explosion of WWW sites of biological interest on the Internet, but it is a listing of some of the major ones and ones of particular interest in linkage analysis. http://www.yahoo.com/Science/Biology/Genetics/, this is a list of sites related to genetics that is kept very up to date. http://www.gdb.org/Dan/DOE/intro.html, this is a short course of sorts that gives some very basic information on how to go about gene mapping. http://lenti.med.umn.edu/linkage/linkage.html, which is serving as linkage analysis home page, will have links to all of the WWW sites listed as well as gopher servers and a hypertext version of the FAQ. http://www.genethon.fr, the Genethon Center, Genethon's home page. http://www.chlc.org, the Cooperative Human Linkage Center, CHLC's home page. http://gdbwww.gdb.org has a version of GDB available and access to OMIM. http://www.pathology.washington.edu has human and mouse standard idiograms. The idiograms are useful for making illustrations for gene mapping and for constructing abnormal chromosomes. The PostScript idiograms can be manipulated band by band with illustration software such as Adobe Illustrator, Aldus FreeHand, Canvas, and Altsys Virtuoso. http://www.gene.ucl.ac.uk/~john/programs.html contains software by John Attwood. http://www.gene.ucl.ac.uk/packages/dcurtis/ contains software by Dave Curtis. http://linkage.cpmc.columbia.edu has a lot of useful information on linkage analysis; in particular it offers information on software, the course offered by J. Ott, and the Linkage Newsletter. 2.4) What gopher sites have useful linkage information? [1995/03/01] There is one that will be maintained with links to other gophers of interest in linkage analysis, as well as links to other gopher servers of biologically related information. It is at lenti.med.umn.edu, and the path to it is Biologically Related Information/Genetic Linkage Analysis. 2.5) What "linkage centers" make information and assistance available to researchers? [1995/11/11] One such center is the Cooperative Human Linkage Center (CHLC). The goal of this center is to generate a high resolution map of the human genome and rapidly distribute this information to the genome community. They are in the process of identifying more human markers and developing high resolution framework maps. One can obtain information about CHLC from via gopher from gopher.chlc.org , http://www.chlc.org , ftp://ftp.chlc.org , info-server@chlc.org, or help@chclc.org. Among other things, CHLC provides primer selection and linkage analysis via email. Information on those services can be found by sending email to: primer- server@chlc.org and linkage-server@chlc.org. David Featherston (davidf@caos.kun.nl) from the Dutch EMBnet Node is starting a linkage analysis service: software availability, support/advice initially, possibly training, and perhaps consultancy. At present they have MapMaker/EXP 3.0b, MapMaker/QTL 1.1, Lathrop and Lalouel's LINKAGE package, and Schaffer's FASTLINK package. This means that if users have Genomics Package accounts at the CAOS/CAMM Center, they can use these programs on their fast computers to analyze their data sets. Please contact David Featherston if you are interested in more information about such an account. A major European center is the Human Genome Mapping Project Resource Centre in Hinxton, England. It is funded by the Medical Research Council, and has a broad range of software and databases available, mainly focused on the Human Genome Project. In the area of Linkage analysis it has the following programs available: FASTLINK, CRIMAP, MAP MAPMAKER, HOMOZ, PEDPACK, APM, SIMLINK, FASTMAP, COMDS, DOLINK & QDB, HANDLINK, GAS and Jurg Ott's collection of programs. The aim is to have all major (Unix-based) gene linkage packages available for our users. The Center also gives courses on linkage analysis. More information about the Centre can be obtained from it's home- page: http://www.hgmp.mrc.ac.uk/. If you want to register as user, send e-mail to admin@hgmp.mrc.ac.uk for a registration form. For more information about the gene-linkage services you can contact Frank Visser (fvisser@hgmp.mrc.ac.uk). INFOBIOGEN: This is the French GDB node that offers also a linkage server and assistance in the process of linkage analysis. It uses LINKAGE, FASTLINK and other programs running on a Sparc Center 2000E with 1 giga RAM, 4 Gig of swap, and 6 CPU's. For furhter information contact Lucien Bachner at bachner@infobiogen.fr or look at the following web site http://www.infobiogen.fr/. 2.6) What journals are useful for linkage analysis? [1995/06/02] American Journal of Human Genetics, Annals of Human Genetics, Computer Applications in Biosciences (CABIOS), Genomics, Genetic Epidemiology, Human Genome News (available by gopher from gopher.gdb.org), Human Genome Project Journal, Human Heredity, Journal of Computational Biology, Nature Genetics. 2.7) What courses are offered on linkage analysis? [1995/09/09] There are three primary courses offered throughout the yeart on human linkage analysis. One is a four day course offered once per year by Drs. Margaret Pericak-Vance and Jonathan Haines. The next course will be offered in late April, 1996 in Boston. The focus of the course is on the overall design of a human disease gene mapping study, with particular emphasis on the problems of common/complex disorders. The course covers clinical classification, pedigree ascertainment, collection, and follow-up, basic linkage techniques, linkaghe and association analysis for complex disorders, laboratroy technqiues for genotyping, and gene characterization. The courseemphasizes the global decision-making process, rather than details of specific techniques. For more information write to Genetic Methods Course; c/o Dr. Margaret Pericak- Vance; Division of Neurology, Box 2900; Duke University Medical Center; Durham, NC 27710, or you can send e-mail to genclass@genemap.mc.duke.edu. The remaining two courses are both offered by Jurg Ott on the software used for human linkage. One is a beginner's course, and the other an advanced course for those familiar with the linkage analysis software. These courses are offered several times throughout the year and you can get more information by contacting Katherine Montague/Jurg Ott; Columbia University, Unit 58; 722 West 168th Street; New York, NY 10032. In addition you can fax to (212)568- 2750 or call (212)960 2507 or email km165@columbia.edu for more information. A new beginner's level linkage course will be offered in French October 24-25 1995 by INFOBIOGEN, in Villejuif south suburb of Paris. It's free for all academic institutions. For furhter information contact Lucien Bachner at bachner@infobiogen.fr or linkage@infobiogen.fr. 3.0) GENE-LINKAGE SOFTWARE OVERVIEW 3.1) What database management programs do people use for linkage data? [1995/05/31] One must be aware that some pedigree drawing software can also serve as databases for data as well as drawing pedigrees, see the next question in the FAQ for a description of those packages. CEPH DBMS: The CEPH DataBase Management System is specifically designed for chromosome mapping with CEPH style pedigrees. It can output data in ped.out format for the LINKAGE package. This program can now be picked up via anonymous FTP from ftp.cephb.fr in pub/ceph_genotype_db. DOLINK: This DOS custom database program by D. Curtis manages genetic data and sets up input files for linkage analysis. It is available from ftp.gene.ucl.ac.uk. The DOS and Windows versions of DOLINK program help manage genetic data and setup analysis. It is available with the C++ source allowing compilation on Unix host running X and possibly a Macintosh. File Express: This is a DOS shareware database which can be used to hold data for DOLINK (largely superseded by QDB). It is available as fe51-a/b/c.zip via FTP from ftp.gene.ucl.ac.uk in /pub/packages/dcurtis. LABMAN and LINKMAN: These are linkage analysis databases for holding linkage data and exporting it in various formats for linkage analysis. They are available via anonymous FTP from lenti.med.umn.edu in /pub/linkage/labman. These databases were developed by P. Adams of Columbia University. LYNKSYS: This custom-made database program was written by J. Attwood and S. Bryant. Although they continue to use it, J. Attwood suggests using DOLINK instead. LINKSYS is not currently available at any FTP sites. Map Manager: It is a program for the Macintosh which helps analyze the results of genetic mapping experiments using backcrosses, intercrosses, or recombinant inbred strains. In addition it also has tools for statistical analysis of experiments. The program was created by K. F. Manly at the Roswell Cancer Institute and is available via FTP from mcbio.med.buffalo.edu in /pub/MapMgr. QDB: This is a database program available as DOS and Windows versions and with C++ source allowing compilation for X and possibly Macintosh. It is available as qdb16a.zip via FTP from ftp.gene.ucl.ac.uk in /pub/packages/dcurtis. 3.2) What programs are available for pedigree drawing? [1997/10/27] One of the tricks of managing individuals in a mapping study is trying to get the database you are using to export your family data in a format acceptable for input into pedigree drawing programs. The marriage between these two can be of great assistance. However, some pedigree drawing programs have databases as a part of the package. CYRILLIC: This is a pedigree editor for Windows with facilities for including marker data which you can then have it output the input files for LINKAGE. It is Windows-based, so input of the pedigree is very efficient. You also have a data form associated with each individual where you can store names and other pertinent data. It also has the ability to interface with most standard PC databases. This program is not public domain and is available from Cherwell Scientific Publishing. If you would like more information send email to csp@sable.ox.ac.uk and they would be very happy to send you a demo of the program. Version 2 of Cyrillic should be coming out late summer of 1995. FTREE: This is a DOS pedigree program written by R. Go at the University of Alabama. GENETREE: GeneTree 1.0 is a DOS package which provides a convenient way to draw family tree diagrams suitable for genetics or genealogy. The package consists of the GeneTree program, which draws pedigree diagrams using a command language; and SC, using a menu driven program that facilitates creation of GeneTree commands. GeneTree and SC are made available with program manuals, examples of family tree diagrams, and a GeneTree Quick Reference Guide. GeneTree is written in C. Note that it is a DRAWING program and does not compute genetic parameters. The GeneTree program is available from wijsman@max.u.washington.edu at a price of $125 (because of licensing fees from a private company which wrote one of the drivers used in the program). KINDRED: This new DOS database program, distributed by Epicenter Software, is specifically designed for linkage analysis. A free demo is available by calling (818)-304-9487. In addition to database duties, this program will draw pedigrees, haplotype marker data, and can output data in LINKAGE format. PEDPAK: This package is designed to handle large datasets for animals. The package was written and distributed by Alan Thomas, who is in Bath, England. The software is not public domain and must be purchased. Pedigree/Draw: It is a Macintosh based program, written by B. Dyke, P. Mamelka, and J. MacCluer. It is available from bdyke@darwin.sfbr.org or Pedigree/Draw; Department of Genetics; Southwest Foundation for Biomedical Research; PO. Box 28147; San Antonio, TX 78228-0147. An upgrade from a previous version is $10, the current version is 4.4. Documentation costs $10 printed and the full package including documentation costs $45. There is a script which converts linkage format to Pedigree/Draw available via anonymous FTP at ftp.ee.pdx.edu in /pub/users/cat/rootd/convert.new. PEDRAW: This program is a pedigree drawing program written by D. Curtis for DOS and available via FTP from ftp.gene.ucl.ac.uk in /pub/packages/dcurtis. The most current version is called pedraw16.zip. A companion program to PEDRAW is PEDHELP, it is a pop-up help for PEDRAW. PAP: The Pedigree Analysis Package (PAP) is a set of FORTRAN 77 programs for computing likelihoods and simulating phenotypes of genetic models on pedigrees. It is available via gopher from corona.med.utah.edu in Publicly Accessible Software, probes(sts), etc./software/pap. 3.3) What linkage analysis helper programs are available? [1996/04/29] CEPH2CRI: This program converts to output from the CEPH DBMS into the format useable in CRI- MAP. It can be found at ftp.gene.ucl.ac.uk in /pub/packages/linkage_utils. EASISTAT: This is a DOS statistics package, it contains EASIGRAF which draws graphs of lod scores from the output of FASTMAP. The lod scores first need to be run through the TABLE utility, which is included in the DOLINK and FASTMAP packages. It is available as estat21.zip via anonymous FTP from ftp.gene.ucl.ac.uk in /pub/packages/dcurtis. FIRSTORD: A demonstration of a method for preliminary ordering of loci based on two-point lod scores. It is available as DOS executable and C source called first11.zip from ftp.gene.ucl.ac.uk in /pub/packages/dcurtis. LINKMEND: A program for converting LINKAGE-format files to MENDEL-format files. It is available by anonymous FTP from watson.hgen.pitt.edu as linkmend.tar.Z. MAP: A program to convert LINKMAP output into a table of multipoint lod scores. It is available by anonymous FTP from watson.hgen.pitt.edu as map.tar.Z. PEDPREP: A program for converting a MENDEL-format pedigree file ('pedm.dat') to a Pedigree/Draw file for graphical display on a Macintosh. It is available by anonymous FTP from watson.hgen.pitt.edu as pedprep.tar.Z. RECODE: A program for recoding character or sized-allele data into numbered-allele data. It is available by anonymous FTP from watson.hgen.pitt.edu as recode.tar.Z. 3.4) Why are some programs used primarily for human chromosome mapping, while others are used for human disease mapping? [1995/03/01] Any family can be used for chromosome mapping, so CEPH has picked a particular family "shape" and generated a large database with these families. Programs designed for chromosome mapping can be optimized for using these families, reducing the time needed for calculations. Only families afflicted with a disease can be used for disease gene mapping. As a result, programs designed for disease gene mapping need to be able to deal with arbitrary pedigrees. In addition, these programs need to be able to handle incomplete penetrance. 3.5) What programs are used for physical mapping? [1995/11/30] CLINKAGE: This is the special version of the LINKAGE programs for 3-generation CEPH pedigrees and codominant markers. The PC and VAX versions are available by FTP from linkage.cpmc.columbia.edu. The Unix version is available from corona.med.utah.edu. CHROMLOOK: This is a program for generating haplotypes of marker data in nuclear pedigrees with all individuals genotyped. It identified both the maternal and paternal recombination events, and provides the resulting haplotypes and recombinants in an easy-to-read format. It should be available via FTP server sometime this summer. It was written by Jonathan Haines and he can be contacted at haines@helix.mgh.harvard.edu. CINTMAX: This program is an extensively modified version of CILINK. It uses map functions to model the transmission of gametes from parent to child. Some of these map functions are multilocus feasible, and so can be used with more than 3 loci at a time. It is available by anonymous FTP from watson.hgen.pitt.edu as cintmax.tar.Z. CRI-MAP: This program has been used for chromosome mapping for years. It has options which can generate maps, calculate order probabilities, and printout recombination data. It works on .gen files with data from CEPH style families. It is written in K& R type C code, and the author Phil Green has successfully ran it on Unix, DOS, VMS, and Macintosh systems. It is not available via anonymous FTP. Phil Green distributes CRI-MAP freely ONLY to academics/academic institutions. Contact him at: Phil Green; Molecular Biotechnology Dept., FJ-20; Fluke Hall on Mason Rd.; Univ. of Washington; Seattle, WA 98195; USA; Phone (206) 685-4341; Fax (206) 685-7344; or email phg@u.washington.edu. FASTMAP: This program produces quick approximation to multipoint lod score, available as a DOS executable and C source as fstmap11.zip from ftp.gene.ucl.ac.uk in /pub/packages/dcurtis. MULTIMAP: This LISP based expert system uses an customized version of CRI-MAP to create a chromosome map. It is available via anonymous FTP from chimera.gene.cwru.edu. The authors T. Matise, M. Perlin, and A. Chakravarti continue to improve the code, add new functions, and provide excellent support. When used with the CRI-MAP chrompic option (to find double-recombinations to identify possible errors), it is incredibly useful. This is Unix-only (supported for DEC-Ultrix, HP9000, and Suns). The customized CRI-MAP version (called LISPCRI) is distributed at the FTP site, but was not meant to be used independently of MULTIMAP. MAPMAKER: Dr. Eric Lander; Whitehead Institute; 9 Cambridge Center; Cambridge, MA 02142; mapm%mitwibr@mitvma.mit.edu. MAPMAKER is available via FTP at genome.wi.mit.edu in /pub/mapmaker3. RHMAP: It is a set of three FORTRAN 77 programs that provide the means for a complete statistical analysis of RH mapping data. RH2PT is a program for data description and two-point analysis. It provides estimates of locus-specific retention probabilities and pairwise breakage probabilities, two-point lod scores for linkage of the various marker pairs, and linkage groups. RHMAP is now also available at the following URL http://www.sph.umich.edu/group/statgen/software. If you would like email notification of updates please send email to boehnke@umich.edu. 3.6) What programs are used for disease gene mapping? [1995/09/07] APM: The Affected Pedigree Member Method distribution contains the new APM programs, a new file conversion utility, and a histogram/statistics generator. To build the entire distribution, you need C, Pascal, and FORTRAN compilers, and a make utility is also helpful. The programs which are built include: APM, a program to calculate the single locus statistic over one or several marker loci; SIM, a program to simulate pedigrees and, using output files of APM, test for asymptotic normality of the null distribution; APMMULT, a program to generate the multilocus statistic; SIMMULT, a program like SIM but which simulates recombination and uses the output of APMMULT; CHAPM, a program to convert LINKAGE files to APM files, or APM files of one format to APM files of another format; and HIST, a program to compute various statistical figures, plot a histogram, and compute empirical p-values. The APMember package by D. Weeks is available via anonymous FTP from watson.hgen.pitt.edu. Additionally, there are pre-compiled executables of the APM programs for Sun-OS and Sun-Solaris available as newapm.sunos.tar.Z newapm.solaris.tar.Z. CLUMP: A Monte Carlo method for assessing significance of a case-control association study with a multi-allelic marker, available as DOS executable and C source. It is available as clump.zip via anonymous FTP from ftp.gene.ucl.ac.uk in /pub/packages/dcurtis. ESPA: This is a program used for extended sib pair analysis. It comes in a DOS version and can only look at markers containing 5 alleles. It was written by Lodeijk Sandkuijl and can be obtained by writing to him at Voorstraat 27; Delft 2611 JK; THE NETHERLANDS. ERPA: A program for carrying out nonparametric linkage analysis, available as DOS executable and C source. It is called erpa12.zip via anonymous FTP at ftp.gene.ucl.ac.uk in /pub/packages/dcurtis. FASTLINK: This is a much faster implementation of the main programs in LINKAGE (LODSCORE, ILINK, MLINK, LINKMAP) in C. The code is faster due to the use of new and better algorithms for the time intensive parts of the computation. FASTLINK is distributed by A. A. Schaffer from the FTP site softlib.cs.rice.edu (cd pub/fastlink). Version 1 of FASTLINK was instigated by R. W. Cottingham Jr. with implementation done by R. M. Idury and A. A. Schaffer. Version 2 of FASTLINK includes further improvements implemented by A. A. Schaffer, S. K. Gupta, and K. Shriram, with guidance from R. W. Cottingham Jr. Version 2 includes the capability to recover gracefully from a crash of the computer on which FASTLINK is running. FASTLINK was initially intended for UNIX machines, but the distribution now includes instructions for porting to VMS as well as a version for DOS. FASTLINK allows you to compile in "fast" or "slow" mode (the slow version of FASTLINK is still much faster than the old LINKAGE programs). The "fast" version uses lots of memory, but uses the extra memory to contain some of the intermediate results which are repetitively recalculated in the "slow" version (and the old linkage package). Best speed can be obtained by setting up 300 megs of virtual memory on a Unix workstation and using the "fast" version. Schaffer maintains a mailing list of fastlink users (fastlink-list@cs.rice.edu) to answer queries and keep users up to date. Schaffer, Gupta, and other colleagues at Rice University have implemented parallel versions of FASTLINK for either a shared-memory multiprocessor or a network of UNIX workstations. This version is now available as FASTLINK 2.3P at the above mentioned FTP site. Write to schaffer@cs.rice.edu for more information. GAS: It provides facilities for reading, writing, sectioning and performing statistical analyses on phenotypic and genotypic data and one of its features is sib pair analysis. It has been developed within the Department of Medicine at Oxford University and is available via FTP from well.ox.ac.uk in the directory pub/genetics/gas. GREGOR: It is a piece of DOS based software for producing simulated genetic data. It does not perform linkage analysis, but it may be useful for testing methods or assumptions about linkage analysis. GREGOR is operated by a series of hierarchical menus that permit the user to define hypothetical genetic scenarios (gene positions and effects) and produce simulated data-sets for a variety of population structures. GREGOR is available by FTP from the site sifon.cc.mcgill.ca in pub/McGill-Contrib. Questions should be directed to the authors tinker@agradm.lan.mcgill.ca or mather@agradm.lan.mcgill.ca. LINKAGE: This package of programs was developed by M. Lathrop with help from J. M. Lalouel, C. Jlier, and J. Ott. The LINKAGE package consists of several analysis and several utility programs. Versions are available for DOS, OS2, VAX, and Unix platforms. Here are some of the analysis programs: MLINK: 2-point lod-score calculations at fixed recombination distances; LINKMAP: multipoint lod score calculations at fixed distances; ILINK: calculates the recombination distance with the highest lod-score. Unix versions are available via gopher from corona.med.utah.edu in Publicly Accessible Software, probes(sts), etc./software/linkage, DOS and VMS versions are available from linkage.cpmc.columbia.edu, or on floppy disks, when you write to: Katherine Montague/Jurg Ott; Columbia University, Unit 58; 722 West 168th Street; New York, NY 10032. Send pre-formatted DOS disks if you request linkage by mail. You can send email to km165@columbia.edu if you need more information regarding mail requests for the LINKAGE package. LIPED: This DOS program written by J. Ott calculates probabilities for linkage between disease markers and genetic markers. Its input file differentiates between phenotypes and genotypes. As a result, this program is easiest to use when your data is from "old-style" genetic-markers (such as blood phenotype data). This was one of the first programs to do linkage analysis calculations, the LINKAGE package is more commonly used now. MIM: Multipoint IBD Method: mimintro.txt, mimsetup.txt, mim.txt, changes.txt, testa.dat, and testa.out. SAGE: The S.A.G.E. (Statistical Analysis for Genetic Epidemiology) software is a commercial software package that provides researchers with the tools necessary for various types of statistical genetic analysis of human family data. These include: FSP Family Structure Program - used to check pedigree data for common structural errors as well as consanguineous matings and loops, AGEON Estimates the Distribution of Age-of-Onset - in the presence of non-susceptible persons. This information can be used in SIBPAL. DESPAIR Design of linkage studies that are based on affected pairs of relatives - determines the optimal two-stage study design for such studies. LODLINK Lod Score Linkage Analysis - which performs two-point linkage analysis between a trait and each of a set of markers. MAPLOC Mapping a Disease-Related Trait Relative to a Set of Linked Markers - assumes a fixed map for a set of markers to find the best relative position for a trait locus. RELPAL Relative Pair Linkage Analysis - which screens for genetic linkage of a continuous trait to markers on the basis of sib-pair relationships. SIBPAL Sib-Pair Linkage Analysis - which screens for genetic linkage on the basis of sib-pair relationships. It can also be used for ordering marker loci. ASSOC Marker-Trait Association - allows for estimating and testing the association between a quantitative trait and a genetic marker in pedigree data. BCROSS Genetic Hypothesis Testing from Data on Inbred Strains, their F1 and Backcross(es) - test one locus, two-locus and polygenic hypotheses for quantitative data. CLUSTR Power Transformation to Obtain Normality and Homoscedasticity from Clustered Data - can be used to obtain an appropriate transformation for data that are to undergo analysis with BCROSS. FCOR Familial Correlations - estimates familial correlations for all types of relatives up to third degree, including cross-correlations for up to five traits. RELATE Relationship to Proband - determines, for single proband pedigrees, the relationship of each individual in the pedigree to the proband. TDTEX Exact Test for Transmission Disequilibrium - implements several asymptotic and exact versions of the transmission disequilibrium test (TDT). REGC, REGD, REGTL, REGTN Segregation Analysis Programs - reforms analyses based on regressive models. Information from these programs can be further processed by LODLINK. The SAGE group can be contacted at sage@darwin.cwru.edu. X-LINKED APM: X-linked version of the APM programs (single-marker), see APM above for more information on APM. It is available by anonymous FTP from watson.hgen.pitt.edu as xlinkapm.tar.Z. Also, xlinkapm.readm is available there, which is a readme about the X-linked version of the APM programs. 3.7) What programs are available for running linkage simulations? [1995/11/30] FASTSLINK: This is program is just like SLINK (see SLINK below), but it utilizes the enhancements incorporated into FASTLINK. It is available via anonymous FTP from watson.hgen.pitt.edu. SIMAPM: Is the SLINK based simulation program for the APM package. This represents a hacked together package which only runs under a Unix system. You will need FORTRAN, Pascal, and C compilers to use this package. It is available via anonymous FTP from watson.hgen.pitt.edu SIMLINK: This FORTRAN program developed by L. Ploughman and M. Boehnke simulates linkage analysis on a family, and gives you an estimate the probability, or power, of detecting linkage in a given family. It allows the researcher to determine whether a family has sufficient informativeness to detect linkage. SIMLINK requires large quantities of memory. It was written for DOS, but has been ported to many platforms. It is available from: Michael Boehnke; Department of Biostatistics; School of Public Health; University of Michigan; Ann Arbor, MI 48109-2029. No postage-money or blank disks are necessary to get SIMLINK sent to you. SIMLINK may be available via anonymous FTP soon. For further information send email to boehnke@umich.edu. SIMLINK is now also available at the following URL http://www.sph.umich.edu/group/statgen/software. If you would like email notification of updates please send email to boehnke@umich.edu. SLINK: It is a Pascal program developed by D. Weeks, M. Lathrop, and J. Ott. It is similar to SIMLINK. It is more general than SIMLINK in that it allows for partial marker typing at the locus to be generated, but it runs slower than SIMLINK. It is available from linkage.cpmc.columbia.edu and watson.hgen.pitt.edu or on floppies (use the same address as for LINKAGE). 3.8) What programs are available to help detect errors in linkage data? [1995/11/30] Typically the linkage packages in and of themselves will detect errors in linkage data that are obvious, such as impossible phenotypes and genotypes, and obvious errors in pedigrees. Typically the programs will just grind to halt and allow you to fix the error, and try again until you finally succeed. However, errors that "make sense" to linkage programs will not be detected. GENO: It is a genotype entry/edit tool that will allow you to easily enter and manipulate genotyping data. You can also check the quality of your data with the built-in Mendelian inheritance checker. The author the of program is Matt Stephenson and can be reaced at stephenm@bioimage.mfldclin.edu. The program is available via FTP from dgabby.mfldclin.edu in /pub/geno. GENOCHECK: It is an error checking program designed to identify individuals and loci that are likely to contain errors. the statistical method was designed to identify typing error, but is general enough to pinpoint any unlikely genotype still consistent with Mendelian inheritance. The author is Dr. Margaret Gelder Ehm the ftp site is at softlib.cs.rice.edu and it is in /pub/GenoCheck. It is written for Unix. 3.9) What programs help me recode genetic markers? [1995/03/01] DOLINK can downcode alleles automatically. However, the main use of DOLINK is to prepare files for LINKAGE from a database. In addition P. Adams package LABMAN and LINKMAN have features for the recoding of alleles. 4.0) LINKAGE PACKAGE SPECIFIC INFORMATION 4.1) How do I get my CEPH data into CRI-MAP format? [1995/03/01] You can output the file in linkage format and use link2gen in CRI-MAP. The disadvantage here is that your marker names are separated from your data and it's easy to make a mistake and get them mixed up. You can output the file in ped.out format and use CEPH2CRI mentioned above in the FAQ to do the conversion as well. 4.2) How do you calculate MAXHAP? [1995/09/09] MAXHAP is the maximum possible number of haplotypes in your analysis. You multiply together the number of alleles at each locus used in a particular run; not all loci in your dataset, just the loci you are using in that particular calculation. Remember that the affection status counts as two alleles, regardless of the number of liability classes. For example, if a dataset has the following information: the liability classes, marker A has 3 alleles, marker B has 4 alleles, and marker C has 5 alleles and your run includes a LINKMAP run between affection status, marker A, and marker B, then your MAXHAP must be at least 2*3*4=24. FASTLINK 2.3P includes an auxiliary program called ofm (optimize for maxhap) which can be used to automatically recompile the desired program with the ideal value of maxhap under the following assumptions: using UNIX or VMS (not DOS), running ILINK or LINKMAP or MLINK (not LODSCORE), the main script is produced by the LINKAGE auxiliary program LCP), and the locus file is produced by the LINKAGE auxiliary program PREPLINK; see README.ofm in the FASTLINK distribution. 4.3) When should you use binary coding instead of numeric allele coding? [1995/03/01] Usually there is no advantage to coding disease loci as either binary or numeric using liability classes. Generally, binary coding is more complex in that we humans often have a hard time thinking that way. Some of the codominant phenotypes lend themselves to binary coding; for example, ABO blood types: A (101), B (011), O (001), AB (111), and unknown (000). Since you cannot distinguish AO from AA at the phenotype level you code both genotypes as (101), presence of A and O. In reality O represents absence of both A and B. However, do not code using (000), since it would be an unknown. Use of binary codes has decreased since DNA markers have come into use since they allow one to type an individual with respect to genotype. You can use binary codes if you have phenotypic data which does not allow for the discrimination of the underlying genotype exactly, and one can code it as the presence with 1 or absence with 0 of factors such as the A and B antigens. Binary codes allow the representing loci with codominant and dominant mode of inheritance, while allele number notation is good only for codominant loci. Few people use binary factor notation. They either use allele numbers for codominant loci, or affection status notation for dominant loci. The main reason why binary factor notation is still currently used is that CEPH's database is in that notation. 4.4) What do you do when allele frequencies not add up to 1, for example, when alleles are not present in a pedigree under study? [1995/03/01] The best approach is to specify n+1 alleles, where there are n alleles actually observed in the pedigree. Use the correct allele frequencies for the n alleles, and for the n+1 allele, use 1 minus the sum of the frequencies of the observed alleles. 4.5) I use LINKAGE and/or FASTLINK, what references should I cite in my papers? [1995/03/01] FASTLINK users should cite: Cottingham, R. W. Jr., Idury, R. M., and Schaffer, A. A. "Faster Sequential Linkage Computations." American Journal of Human Genetics. 53:252-263, 1993. Schaffer, A. A. , Gupta, S. K., Shriram, K., and Cottingham, R. W. Jr. "Avoiding Recomputation in Linkage Analysis". Human Heredity. 44(4):225-37, 1994 Jul-Aug. In addition, all FASTLINK and LINKAGE users should also cite the LINKAGE papers: Lathrop, G.M., Lalouel, J.M., Julier, C. , and Ott, J. "Strategies for Multilocus Analysis in Humans." PNAS. 81:3443-3446, 1984. Lathrop, G.M. and Lalouel, J.M., "Easy Calculations of LOD Scores and Genetic Risks on Small Computers." American Journal of Human Genetics. 36:460-465, 1984. Lathrop, G.M., Lalouel, J.M., and R. L. White. "Construction of Human Linkage Maps: Likelihood Calculations for Multilocus Analysis." Genetic Epidemiology. 3:39-52, 1986. 4.6) What is recoding of alleles all about anyway? [1995/03/01] One of the problems with highly polymorphic markers is that they can increase the computational requirements of the computers by several orders of magnitude due to the large number of alleles present. This can put the computation of some lod scores out of reach for DOS computers and take many days on higher end systems. So it is important to use methods that reduce the number of alleles, and recoding will reduce the number of alleles in your calculations. The method of recoding of alleles described by J. Ott in the Annals of Human Genetics, 42:255-257 (1978) works very well, but can only be done when the mode of inheritance of the disease is known. An article inspired by Ott's original work written M. Braverman in Computers and Biomedical Research, 18:24-36 (1985) extends the recoding of alleles in two ways: 1) it allows for pedigrees of arbitrary structure, and 2) it allows for missing/partially known marker phenotypes. It is usually possible to recode marker alleles to some extent even if the mode of inheritance of the disease is not known since what is still desired with respect to the marker is a labeling which preserves the available information about the source of each marker allele. It is important, however, where the full ancestry of alleles cannot be traced in a pedigree, that the recoded alleles maintain the allele frequencies appropriate to the original alleles. In a complex disorder, this may not be possible. Another method is if the marker in question has 14 alleles in the general population, but only 9 alleles in the study population, it is possible to collapse the functional number of alleles to 9 or 10. Usually, adjust the allele frequencies to sum to 1 by dividing each allele frequency by the sum of the (observed) allele frequencies. For the latter all the allele frequencies remain the same, but the unobserved ones are collapsed into a single allele (and frequency). If there are 9 observed alleles (but there are 14 in the population), then rescaling the frequencies of the observed 9 alleles will also not produce quite correct results. Consider the unlikely example of a huge pedigree with only the most recent generation observed in which the observed 9 alleles all have very low and equal frequency. If there are distantly separated relatives who are affected there is some reasonable support for linkage since the alleles are rare. But if we rescale frequencies to 1/9 per alleles, then sharing of alleles isn't so unlikely. Coding the marker with 10 alleles produces correct results as it will produce the same lod scores as would coding the marker with 14 alleles. 4.7) What do you do when you get thetas greater than 0.5 when using LINKAGE? [1996/22/01] This seems to occur when the GEMINI optimization procedure prefers to go for a local optimum of a theta greater than 0.5 as a result of the starting theta values being to high in a LINKAGE run using ILINK or LODSCORE. This can easily be fixed by modifying the starting theta direclty with LCP or editing the LCP generated script. One can also modify the starting value with PREPLINK or by editing the data file containing allele and disease frequencies. This can be an iterative process and one should change theta values by an order of magnitude until reasonable thetas are obtained. One must also be careful of having intial thetas too low, this can also cause problems in the form of erroneous values. One can also run MLINK to examine what is happening at different thetas to determine the best starting theta. 5.0) COMPUTER ADMINISTRATION AND OPTIMIZATION 5.1) How can I increase the speed of the LINKAGE/FASTLINK package on my workstation? [1995/05/18] 1. Use FASTLINK, which is the C version of the LINKAGE package with a few algorithmic improvements. It can increase the speed of your calculations by an order of magnitude. 2. Setting up lots of paging space, which uses the hard drive as virtual memory (300 megs is usually plenty). Note that paging space is the same as swap space. Then use the "fast" versions of FASTLINK. 3. Use GCC, which is the GNU/Free Software Foundation C compiler, to compile FASTLINK. GCC produces machine language that is about 10% faster than Sun's C compiler. 4. Install the generic small kernel instead of the generic kernel. The generic kernel has device files for almost everything, and can slow the system down. The generic small kernel is configured for a system without many devices and without many users. Installing a generic small kernel is an option during system installation on Sun workstations. 5. Reconfigure your kernel so it has only devices you need. This should give you a small improvement in overall system speed, but if you are already running the generic-small kernel, additional improvement may be so small that it's not worth the trouble. If the generic small kernel is insufficient for your system this step is a must. The generic kernel will slow down your workstation significantly and most of the device support is unnecessary. 6. Don't run your linkage analyses in the background, because running programs in the background gives them a lower priority. Either do the runs in the foreground or you can use the root password to nice the pedin process by -3 to compensate (negative nice values give a higher priority). If you need to log out, you can use the screen command and "detach" a session so you can log out without programs terminating. Later you can log back in and "reattach" the session, which continued to run while you were logged out. The screen command is available at prep.ai.mit.edu and is also on the O'Reilly Unix Power Tools CD- ROM. According to the Sun documentation, nicing below -10 can interfere with the operating system and actually reduce the process' speed. Running them at the standard default level of 0 is usually sufficient. Some people recommend to run a background job to using nice +19 (!). In this way, the job will not interfere with other normal processes like login. 7. Runs with 100% penetrance can run faster than runs with incomplete penetrance. Of course, if you have an unaffected obligate carrier, this won't work. In addition, incomplete penetrance runs may be necessary for your research to be "good". 8. Change the block size of your file system. One can increase performance of a file system by increasing the block size, thus decreasing the number of read-write operations. A block device, such as a hard disk, usually accesses a block of data simultaneously. Thus, if one is expecting to use large files, having large blocks will be an advantage. However, one usually trades the number of bytes lost to partial files since one has to increase the fragment size to a number larger than 1024, for example 2048. That is, each file or part of a file occupies 2048 bytes, a file of 100 bytes will still occupy 2048 bytes. Therefore, bigger blocks give faster bigger blocks with bigger fragments and more lost space. 9. It has been noted that you can increase the speed of programs which create/access large files in the /tmp directory by creating a tmpfs file system. 10. Of course, buying more RAM will increase your speed. It's been said that increasing RAM from 16 to 32 megs will result in a large increase in speed and increasing RAM from 32-64 megs will result in a significant increase. However, increasing beyond 64 megs is not particularly helpful. 6.0) MOLECULAR BIOLOGY ISSUES IN LINKAGE ANALYSIS 6.1) What screening sets are available for linkage analysis? [1995/09/14] For humans there are the Weber lab screening sets: 3, 3A, 4, 4A, 5, 5A, and 6 . Primers for the markers within these sets are available from Research Genetics, both in unlabeled and fluorescent dye-conjugated forms. The information on these screening sets can be downloaded via FTP from dgabby.mfldclin.edu, they are in /pub. EOF