Two BRCA1/2 founder mutations in Jews of Sephardic origin.

Abstract:

:Founder mutations in BRCA1/2 genes have been detected in several Jewish communities in Israel, including in Ashkenazi Jews and Jews who immigrated to Israel from Iraq, Yemen, Iran and Afghanistan. We analyzed DNA samples of patients of Sephardic origin (descendents of Jews from the Iberian Peninsula) with breast cancer (BC) and/or ovarian cancer (OC) and additional family history of these cancers. In this study we identified 2 mutations: p.A1708E in BRCA1 and c.67 + 1G > A (IVS2 + 1G > A) in BRCA2, each in 3 unrelated patients. The frequency of the two mutations was 26-31% among Sephardic high risk families and about 3% among the full cohort of 177 patients of this origin who were tested in our center. Based on haplotype analysis we concluded that these mutations are most probably founder mutations in Sephardic Jews. We recommend testing the two mutations in women of Sephardic origin who apply for BRCA testing because of personal and/or family history of BC and/or OC. Furthermore, we suggest adding them to the 5 mutations included in "The Jewish panel" of BRCA1/2 mutations that are being tested in Israel.

journal_name

Fam Cancer

journal_title

Familial cancer

authors

Sagi M,Eilat A,Ben Avi L,Goldberg Y,Bercovich D,Hamburger T,Peretz T,Lerer I

doi

10.1007/s10689-010-9395-9

subject

Has Abstract

pub_date

2011-03-01 00:00:00

pages

59-63

issue

1

eissn

1389-9600

issn

1573-7292

journal_volume

10

pub_type

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