ArticleNPJ genomic medicine2025
Clinical TP53 genetic testing is recommended for HER2-positive breast cancer patients aged 35 or younger.
Article in NPJ genomic medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
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14 authors.
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Abstract
Limited information is available for TP53 pathogenic variants (PVs) in early-onset breast cancer patients in China. We investigated the prevalence and clinical relevance of TP53 PVs among 1492 BRCA1/2-negative early-onset breast cancer patients. Peripheral blood samples were collected for TP53 genetic testing through next-generation sequencing. Finally, TP53 PVs were identified in 7 patients (0.47%). The variants p.R248P, p.I251F, and p.G266R were identified for the first time in germline mutations. TP53 carriers exhibited significantly younger diagnosis age (p = 0.003) and higher prevalence of HER2-positive disease (p = 0.020). All carriers were diagnosed before age 35. In HER2-positive patients ≤35 years, the prevalence of TP53 PVs was 2.3%, significantly higher than others after adjusting for a family history of breast cancer and/or ovarian cancer and a personal history of bilateral breast cancer (OR = 13.57, p = 0.002). These results support TP53 genetic testing prioritization for HER2-positive patients under 35 years to guide clinical management, while validation in diverse populations remains essential.
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