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Prevalence and clinical impact of TP53 germline mutations in Chinese women with breast cancer.

Abstract：

:The prevalence and clinical relevance of TP53 germline mutations in a large unselected breast cancer series are largely unknown. Here, we determined TP53 germline mutations in a large cohort of 10,053 unselected breast cancer patients through multigene panel-based next-generation and/or Sanger sequencing assays. We found that 0.5% of patients (50 cases) carried a pathogenic TP53 germline mutation in this large series of 10,053 unselected breast cancer patients, and the prevalence of TP53 germline mutation was 3.8% in very early onset breast cancer (age ≤30 years) in this large cohort. TP53 mutation carriers were significantly more likely to have early onset cancer (p < 0.001) and bilateral breast cancer (p = 0.03), they and were significantly more likely to respond to carboplatin-based neoadjuvant chemotherapy compared to anthracycline- or taxane-based regimen in terms of pathologic complete response (50% vs. 0%, p = 0.006). At the median follow-up of 54 months, TP53 mutation was an independent unfavorable factor for recurrence-free survival (RFS), distant recurrence-free survival (DRFS), and overall survival (OS) (RFS, adjusted hazard ratio [HR]: 2.24, 95% confidence interval [CI]: 1.15-4.33, p = 0.02; DRFS, adjusted HR: 2.73, 95% CI: 1.41-5.30, p = 0.003; OS, adjusted HR: 4.60, 95% CI: 2.26-9.41, p < 0.001) in multivariate analyses. Our study suggested that TP53 germline mutations occur more frequently in very early onset unselected breast cancer patients; and TP53 germline mutation carriers have a very poor survival and may benefit from carboplatin-based neoadjuvant chemotherapy in unselected breast cancer patients.

journal_name

Int J Cancer

journal_title

International journal of cancer

authors

Sheng S,Xu Y,Guo Y,Yao L,Hu L,Ouyang T,Li J,Wang T,Fan Z,Fan T,Lin B,Xie Y

doi

10.1002/ijc.32424

subject

Has Abstract

pub_date

2020-01-15 00:00:00

pages

487-495

issue

2

eissn

0020-7136

issn

1097-0215

journal_volume

146

pub_type

杂志文章

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