Thec. 5096G>A p.Arg1699Gln (R1699Q) intermediate risk variant: breast and ovarian cancer risk estimation and recommendations for clinical management from the ENIGMA consortium

Setareh Moghadasi, Huong D. Meeks, Maaike P G Vreeswijk, Linda A.M. Janssen, Åke Borg, Hans Ehrencrona, Ylva Paulsson-Karlsson, Barbara Wappenschmidt, Christoph Engel, Andrea Gehrig, Norbert Arnold, Thomas Van Overeem Hansen, Mads Thomassen, Uffe Birk Jensen, Torben A. Kruse, Bent Ejlertsen, Anne Marie Gerdes, Inge Søkilde Pedersen, Sandrine M. Caputo, Fergus J. CouchEmily J. Hallberg, Ans M W Van Den Ouweland, J. Margriet Collée, Erik Teugels, Muriel A. Adank, Rob B. van der Luijt, Arjen R. Mensenkamp, Jan C. Oosterwijk, Marinus J. Blok, Nicolas Janin, Kathleen B M Claes, Kathy Tucker, Valeria Viassolo, Amanda Ewart Toland, Diana E. Eccles, Peter Devilee, Christie J. Van Asperen, Amanda B. Spurdle, David E. Goldgar, Encarna Gómez García*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

BACKGROUND: We previously showed that theBRCA1variant c.5096G>A p.Arg1699Gln (R1699Q) was associated with an intermediate risk of breast cancer (BC) and ovarian cancer (OC). This study aimed to assess these cancer risks for R1699Q carriers in a larger cohort, including follow-up of previously studied families, to further define cancer risks and to propose adjusted clinical management of femaleBRCA1*R1699Q carriers.

METHODS: Data were collected from 129BRCA1*R1699Q families ascertained internationally by ENIGMA (Evidence-based Network for the Interpretation of Germline Mutant Alleles) consortium members. A modified segregation analysis was used to calculate BC and OC risks. Relative risks were calculated under both monogenic model and major gene plus polygenic model assumptions.

RESULTS: In this cohort the cumulative risk of BC and OC by age 70 years was 20% and 6%, respectively. The relative risk for developing cancer was higher when using a model that included the effects of both the R1699Q variant and a residual polygenic component compared with monogenic model (for BC 3.67 vs 2.83, and for OC 6.41 vs 5.83).

CONCLUSION: Our results confirm thatBRCA1*R1699Q confers an intermediate risk for BC and OC. Breast surveillance for female carriers based on mammogram annually from age 40 is advised. Bilateral salpingo-oophorectomy should be considered based on family history.

Original languageEnglish
Pages (from-to)15-20
Number of pages6
JournalJournal of Medical Genetics
Volume55
Issue number1
DOIs
Publication statusPublished - Jan 2018

Fingerprint

Dive into the research topics of 'Thec. 5096G>A p.Arg1699Gln (R1699Q) intermediate risk variant: breast and ovarian cancer risk estimation and recommendations for clinical management from the ENIGMA consortium'. Together they form a unique fingerprint.

Cite this