LOT 1.2 – Linkage Analysis of Ordinal Traits

LOT 1.2

:: DESCRIPTION

LOT (Linkage analysis of Ordinal Traits) is a software program that performs linkage analysis of ordinal traits for pedigree data. It implements a latent-variable proportional-odds logistic model that relates inheritance patterns to the distribution of the ordinal trait.

::DEVELOPER

The Collaborative Center for Statistics in Science (C2S2)

:: SCREENSHOTS

:: REQUIREMENTS

  • Linux / Windows /MacOsX
  • Java

:: DOWNLOAD

 LOT

:: MORE INFORMATION

Citation:

Zhang, M., Feng, R., Chen, X., Hu, B., and Zhang, H. (2008)
LOT: a Tool for Linkage Analysis of Ordinal Traits for Pedigree Data.
Bioinoformatics 24;1737-9.

GeneFinder 1.2.7 – Linkage Analysis with a Variety of Extensions

GeneFinder 1.2.7

:: DESCRIPTION

GeneFinder is a software package for linkage analysis with a variety of extensions.  GeneFinder continues a standard linkage software such as MERLIN by providing a more reasonable gene location estimation and the corresponding confidence interval estimate. In addition, GeneFinder provides a variety of linkage extensions such as adjusting for covariate heterogeneity, joint analysis of two linked disease susceptibility loci, linkage conditional on a known locus, etc.

::DEVELOPER

Wei-Min Chen

:: SCREENSHOTS

N/A

::REQUIREMENTS

  • Linux  / Windows / MacOsX

:: DOWNLOAD

 GeneFinder

:: MORE INFORMATION

SPLINK 1.09 – Sib Pair Linkage analysis

SPLINK 1.09

:: DESCRIPTION

SPLINK (Sib Pair Linkage analysis) is a program for linkage analysis using affected sib pairs. It uses the method of maximum likelihood to estimate the probability that two affected sibs share 0, 1 or 2 autosomal marker haplotypes identically by descent (IBD). For marker haplotypes on the X-chromosome, IBD sharing of maternal haplotypes only is considered. Parental marker data need not be present (although, of course, they help) and neither IBD status or phase of marker haplotype need be known. When full parental data are not available, the uncertainty in assigning parental haplotypes may be reduced by including data on sibs who are either unaffected or of unknown affection status.  When all available data still permit ambiguity for parental haplotypes, the population haplotype frequencies become relevant, and these are estimated internally, again using the method of maximum likelihood.

::DEVELOPER

David Clayton

:: SCREENSHOTS

N/A

:: REQUIREMENTS

  • Linux/WIndows
  • C Compiler

:: DOWNLOAD

 SPLINK

:: MORE INFORMATION

Citation

Holmans, P. and Clayton, D. (1995).
Efficiency of typing unaffected relatives in an affected sib-pair linkage study with single locus and multiple tightly-linked markers.
Am J Hum Genet 57:1221-1232.

Alohomora 0.33 – Linkage Analysis tools and Affymetrix Mapping

Alohomora 0.33

:: DESCRIPTION

Alohomora was designed to facilitate genome-wide linkage studies performed with high-density single nucleotide polymorphism (SNP) marker panels such as the Affymetrix GeneChip(R) Human Mapping 10K Array

::DEVELOPER

The Gene Mapping Center (GMC)

:: SCREENSHOTS

:: REQUIREMENTS

:: DOWNLOAD

 Alohomora

:: MORE INFORMATION

Citation:

Ruschendorf F, Nurnberg P.
ALOHOMORA: a tool for linkage analysis using 10K SNP array data.
Bioinformatics. 2005 May 1; 21(9): 2123-5.

XWXW – Linkage Analysis of Quantitative Traits

XWXW

:: DESCRIPTION

XWXW implements the Unified Haseman-Elston method for non-parametric linkage test with quantitative traits. It optimally utilizes the information from a sib-pair. It is uniformly more powerful than both the classical H-E method and the revistited H-E method. Program GENIBD from SAGE or GeneHunter2 is required for sib-pair ibd estimation.

::DEVELOPER

FBAT-Toolkit Team

:: SCREENSHOTS

Command Line

:: REQUIREMENTS

  • Windows / Linux/ Sunsparc stations

:: DOWNLOAD

XWXW

:: MORE INFORMATION

References

Xu X, Palmer LJ, Horvath S, and Wei LJ.  Combining Multiple Phenotypic Traits Optimally for Detecting Linkage with Sib-pair Observations. (2001) Genet. Epidemiol.

Xu X., Weiss S. Xu X., Wei LJ. A unified Haseman-Elston regression method for testing linkage with quantitative trait (2000) Am. J. Hum. Genet. 67: 1025-8