The genetic history of Cochin Jews from India

Yedael Y. Waldman, Arjun Biddanda, Maya Dubrovsky, Christopher L. Campbell, Carole Oddoux, Eitan Friedman, Gil Atzmon, Eran Halperin, Harry Ostrer, Alon Keinan

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Cochin Jews form a small and unique community on the Malabar coast in southwest India. While the arrival time of any putative Jewish ancestors of the community has been speculated to have taken place as far back as biblical times (King Solomon’s era), a Jewish community in the Malabar coast has been documented only since the 9th century CE. Here, we explore the genetic history of Cochin Jews by collecting and genotyping 21 community members and combining the data with that of 707 individuals from 72 other Indian, Jewish, and Pakistani populations, together with additional individuals from worldwide populations. We applied comprehensive genome-wide analyses based on principal component analysis, FST, ADMIXTURE, identity-by-descent sharing, admixture linkage disequilibrium decay, haplotype sharing, allele sharing autocorrelation decay and contrasting the X chromosome with the autosomes. We find that, as reported by several previous studies, the genetics of Cochin Jews resembles that of local Indian populations. However, we also identify considerable Jewish genetic ancestry that is not present in any other Indian or Pakistani populations (with the exception of the Jewish Bene Israel, which we characterized previously). Combined, Cochin Jews have both Jewish and Indian ancestry. Specifically, we detect a significant recent Jewish gene flow into this community 13–22 generations (~470–730 years) ago, with contributions from Yemenite, Sephardi, and Middle-Eastern Jews, in accordance with historical records. Genetic analyses also point to high endogamy and a recent population bottleneck in this population, which might explain the increased prevalence of some recessive diseases in Cochin Jews.

Original languageEnglish (US)
Pages (from-to)1-17
Number of pages17
JournalHuman Genetics
DOIs
StateAccepted/In press - Jul 4 2016

Fingerprint

Jews
India
History
Population
Gene Flow
Linkage Disequilibrium
X Chromosome
Israel
Principal Component Analysis
Haplotypes
Alleles
Genome

ASJC Scopus subject areas

  • Genetics(clinical)
  • Genetics

Cite this

Waldman, Y. Y., Biddanda, A., Dubrovsky, M., Campbell, C. L., Oddoux, C., Friedman, E., ... Keinan, A. (Accepted/In press). The genetic history of Cochin Jews from India. Human Genetics, 1-17. https://doi.org/10.1007/s00439-016-1698-y

The genetic history of Cochin Jews from India. / Waldman, Yedael Y.; Biddanda, Arjun; Dubrovsky, Maya; Campbell, Christopher L.; Oddoux, Carole; Friedman, Eitan; Atzmon, Gil; Halperin, Eran; Ostrer, Harry; Keinan, Alon.

In: Human Genetics, 04.07.2016, p. 1-17.

Research output: Contribution to journalArticle

Waldman, YY, Biddanda, A, Dubrovsky, M, Campbell, CL, Oddoux, C, Friedman, E, Atzmon, G, Halperin, E, Ostrer, H & Keinan, A 2016, 'The genetic history of Cochin Jews from India', Human Genetics, pp. 1-17. https://doi.org/10.1007/s00439-016-1698-y
Waldman YY, Biddanda A, Dubrovsky M, Campbell CL, Oddoux C, Friedman E et al. The genetic history of Cochin Jews from India. Human Genetics. 2016 Jul 4;1-17. https://doi.org/10.1007/s00439-016-1698-y
Waldman, Yedael Y. ; Biddanda, Arjun ; Dubrovsky, Maya ; Campbell, Christopher L. ; Oddoux, Carole ; Friedman, Eitan ; Atzmon, Gil ; Halperin, Eran ; Ostrer, Harry ; Keinan, Alon. / The genetic history of Cochin Jews from India. In: Human Genetics. 2016 ; pp. 1-17.
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