A robust approach for Linkage detection using pedigrees

Research output: Contribution to journalArticlepeer-review


Allele sharing method or trait-model-free approach is a robust technique for linkage detection. In allele sharing method, the association between the joint inheritance of the trait and a set of markers in pedigrees is studied without modelling the trait. This paper aims at an efficient implementation of allele-sharing method for binary trait in multi-generation pedigrees that includes construction of a robust identity by descent measure, and the use of a computationally efficient testing procedure to test for linkage. Simulation studies demonstrate that the proposed method performs well on extended pedigrees and appears to outperform the existing allele-sharing approaches on moderate size pedigrees.

Original languageEnglish (US)
Pages (from-to)405-424
Number of pages20
JournalSankhya: The Indian Journal of Statistics
Issue number3
StatePublished - Dec 1 2007


  • Identity by descent
  • Permutation test
  • Robust linkage analysis


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