The spectrum of BRCA1 and BRCA2 pathogenic sequence variants in Middle Eastern, North African, and South European countries

Yael Laitman, Tara M. Friebel, Drakoulis Yannoukakos, Florentia Fostira, Irene Konstantopoulou, Gisella Figlioli, Bernardo Bonanni, Siranoush Manoukian, Monica Zuradelli, Carlo Tondini, Barbara Pasini, Paolo Peterlongo, Dijana Plaseska-Karanfilska, Milena Jakimovska, Keivan Majidzadeh, Shiva Zarinfam, Maria A. Loizidou, Andreas Hadjisavvas, Kyriaki Michailidou, Kyriacos KyriacouDoron M. Behar, Rinat Bernstein Molho, Patricia Ganz, Paul James, Michael T. Parsons, Aminah Sallam, Olufunmilayo I. Olopade, Arun Seth, Georgia Chenevix - Trench, Goska Leslie, Lesley McGuffog, Makia J. Marafie, Andre Megarbane, Fahd Al-Mulla, Timothy R. Rebbeck, Eitan Friedman

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

BRCA1 BRCA2 mutational spectrum in the Middle East, North Africa, and Southern Europe is not well characterized. The unique history and cultural practices characterizing these regions, often involving consanguinity and inbreeding, plausibly led to the accumulation of population-specific founder pathogenic sequence variants (PSVs). To determine recurring BRCA PSVs in these locales, a search in PUBMED, EMBASE, BIC, and CIMBA was carried out combined with outreach to researchers from the relevant countries for unpublished data. We identified 232 PSVs in BRCA1 and 239 in BRCA2 in 25 of 33 countries surveyed. Common PSVs that were detected in four or more countries were c.5266dup (p.Gln1756Profs), c.181T>G (p.Cys61Gly), c.68_69del (p.Glu23Valfs), c.5030_5033del (p.Thr1677Ilefs), c.4327C>T (p.Arg1443Ter), c.5251C>T (p.Arg1751Ter), c.1016dup (p.Val340Glyfs), c.3700_3704del (p.Val1234Glnfs), c.4065_4068del (p.Asn1355Lysfs), c.1504_1508del (p.Leu502Alafs), c.843_846del (p.Ser282Tyrfs), c.798_799del (p.Ser267Lysfs), and c.3607C>T (p.Arg1203Ter) in BRCA1 and c.2808_2811del (p.Ala938Profs), c.5722_5723del (p.Leu1908Argfs), c.9097dup (p.Thr3033Asnfs), c.1310_1313del (p. p.Lys437Ilefs), and c.5946del (p.Ser1982Argfs) for BRCA2. Notably, some mutations (e.g., p.Asn257Lysfs (c.771_775del)) were observed in unrelated populations. Thus, seemingly genotyping recurring BRCA PSVs in specific populations may provide first pass BRCA genotyping platform.

Original languageEnglish
Pages (from-to)e1-e23
JournalHuman Mutation
Volume40
Issue number11
DOIs
Publication statusPublished - 1 Nov 2019

Keywords

  • BRCA1 BRCA2 mutational spectrum
  • first pass genotyping
  • inherited breast cancer
  • Middle East
  • North Africa
  • underserved populations

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