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Guest Editorial| Volume 30, ISSUE 2, P255-257, February 2023

Pregnancy-Associated Breast Cancer in BRCA1/2 Carriers: Is Intensified Breast Ultrasound Surveillance Warranted?

Published:December 19, 2022DOI:https://doi.org/10.1016/j.acra.2022.11.004
      Breast and ovarian cancer are present in several autosomal dominant cancer syndromes, although they are most strongly associated with highly penetrant germline pathogenic variants of BRCA1 and BRCA2 (

      PDQ Cancer Genetics Editorial Board. Genetics of Breast and Gynecologic Cancers (PDQ®): Health professional version. 2022 Apr 20. In: PDQ cancer information summaries [Internet]. Bethesda, MD: National Cancer Institute (US); 2002. PMID: 26389210.

      ). BRCA gene mutation carriers have substantially increased lifetime risk (>70%) for developing breast cancer (
      • Kuchenbaecker KB
      • Hopper JL
      • Barnes DR
      • et al.
      Risks of breast, ovarian, and contralateral breast cancer for BRCA1 and BRCA2 mutation carriers.
      ) Although breast cancer risk varies throughout a woman's lifetime, the excess risk related to mutations in these genes is most evident during the reproductive years, with the average age of female breast cancer diagnosis among BRCA1 mutation carriers at 42 years, 20 years younger than the average population (
      • Brose MS
      • Rebbeck TR
      • Calzone KA
      • et al.
      Cancer risk estimates for BRCA1 mutation carriers identified in a risk evaluation program.
      ), and breast cancer annual risk of 3.8% between ages 25 and 40 (
      • Lubinski J
      • Huzarski T
      • Byrski T
      • et al.
      The risk of breast cancer in women with a BRCA1 mutation from North America and Poland.
      ). Breast cancer screening strategies, including breast magnetic resonance imaging (MRI) and mammography, are commonly performed in BRCA mutation carriers. Screening is recommended at earlier ages in individuals with an increased risk (

      PDQ Cancer Genetics Editorial Board. Genetics of Breast and Gynecologic Cancers (PDQ®): Health professional version. 2022 Apr 20. In: PDQ cancer information summaries [Internet]. Bethesda, MD: National Cancer Institute (US); 2002. PMID: 26389210.

      ), with current guidelines recommending annual breast MRI starting at age 25 and annual mammogram added at age 30 (
      • Monticciolo DL
      • Newell MS
      • Moy L
      • et al.
      Breast cancer screening in women at higher-than-average risk: recommendations from the ACR.

      NCCN guidelines: Genetic/familial high-risk assessment: breast, ovarian, and pancreatic. Version 1.2023 — September 7, 2022. Available at: https://www.nccn.org/professionals/physician_gls/pdf/genetics_bop.pdf. Accessed October 18, 2022.

      ). There is evidence that these strategies are useful in early cancer detection as well as improving overall survival (
      • Lowry KP
      • Lee JM
      • Kong CY
      • et al.
      Annual screening strategies in BRCA1 and BRCA2 gene mutation carriers: a comparative effectiveness analysis.
      ).
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