Genetic anticipation of breast cancer among BRCA1/BRCA2 mutation carriers: A retrospective study

Aviya Kedmi, Luna Kadouri, Iftach Sagy, Tamar Hamburger, Gabriel Levin, Noa Zimhony-Nissim, Tamar Peretz

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Objective: To study the anticipation phenomenon among hereditary breast cancer patients, by evaluating trends in age at diagnosis and phenotype of breast cancer across two successive generation pairs of BRCA1/2 mutation carriers/non-carriers with breast cancer after reports of an earlier age of diagnosis in successive generations among BRCA1/2 mutation carrier families. Method: A retrospective cohort study. Patient characteristics, pathologic data and survival were compared between mothers and daughters and between carriers and non-carriers. Results: Overall, 126 patients were found, who formed 67 pairs of mothers and daughters diagnosed with breast cancer and genetically tested for BRCA mutations. Age at diagnosis was significantly younger in the daughter versus mother generation, in both groups of BRCA carriers/non-carriers. Tumor characteristics were not different between mothers and daughters. Survival analysis revealed a not significant better outcome for the daughter generation versus the mother generation. Conclusions: Breast cancer appeared to be diagnosed at an earlier age in successive generations among BRCA mutation carriers and non-carriers. The fact that we also observed a downshift at age of diagnosis in non-carrier pairs emphasizes that other factors (environmental, lifestyle, or social) may influence the age at diagnosis.

Original languageEnglish
Pages (from-to)537-543
Number of pages7
JournalInternational Journal of Gynecology and Obstetrics
Volume159
Issue number2
DOIs
StatePublished - 1 Nov 2022
Externally publishedYes

Keywords

  • BRCA1
  • BRCA2
  • anticipation
  • breast cancer
  • survival

ASJC Scopus subject areas

  • Obstetrics and Gynecology

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