Germline pathogenic variants of 11 breast cancer genes in 7,051 Japanese patients and 11,241 controls

Yukihide Momozawa, Yusuke Iwasaki, Michael T. Parsons, Yoichiro Kamatani, Atsushi Takahashi, Chieko Tamura, Toyomasa Katagiri, Teruhiko Yoshida, Seigo Nakamura, Kokichi Sugano, Yoshio Miki, Makoto Hirata, Koichi Matsuda, Amanda B. Spurdle, Michiaki Kubo

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139 Citations (Scopus)


Pathogenic variants in highly penetrant genes are useful for the diagnosis, therapy, and surveillance for hereditary breast cancer. Large-scale studies are needed to inform future testing and variant classification processes in Japanese. We performed a case-control association study for variants in coding regions of 11 hereditary breast cancer genes in 7051 unselected breast cancer patients and 11,241 female controls of Japanese ancestry. Here, we identify 244 germline pathogenic variants. Pathogenic variants are found in 5.7% of patients, ranging from 15% in women diagnosed <40 years to 3.2% in patients ≥80 years, with BRCA1/2, explaining two-thirds of pathogenic variants identified at all ages. BRCA1/2, PALB2, and TP53 are significant causative genes. Patients with pathogenic variants in BRCA1/2 or PTEN have significantly younger age at diagnosis. In conclusion, BRCA1/2, PALB2, and TP53 are the major hereditary breast cancer genes, irrespective of age at diagnosis, in Japanese women.

Original languageEnglish
Article number4083
JournalNature communications
Issue number1
Publication statusPublished - 01-12-2018

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Biochemistry,Genetics and Molecular Biology
  • General Physics and Astronomy


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