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- Title
TP53-associated early breast cancer: new observations from a large cohort.
- Authors
Sandoval, Renata L; Bottosso, Michele; Tianyu, Li; Polidorio, Natalia; Bychkovsky, Brittany L; Verret, Benjamin; Gennari, Alessandra; Cahill, Sophie; Achatz, Maria Isabel; Caron, Olivier; Imbert-Bouteille, Marion; Noguès, Catherine; Mawell, Kara N; Fortuno, Cristina; Spurdle, Amanda B; Tayob, Nabihah; Andre, Fabrice; Garber, Judy E
- Abstract
Background A recent large, well-annotated international cohort of patients with Li-Fraumeni syndrome and early-stage breast cancer was examined for shared features. Methods This multicenter cohort study included women with a germline TP53 pathogenic or likely pathogenic variant and nonmetastatic breast cancer diagnosed between 2002 and 2022. Clinical and genetic data were obtained from institutional registries and clinical charts. Descriptive statistics were used to summarize proportions, and differences were assessed using χ2 or Wilcoxon rank sum tests. Metachronous contralateral breast cancer risk, radiation-induced sarcoma risk, and recurrence-free survival were analyzed using the Kaplan-Meier methodology. Results Among 227 women who met study criteria, the median age of first breast cancer diagnosis was 37 years (range = 21-71), 11.9% presented with bilateral synchronous breast cancer, and 18.1% had ductal carcinoma in situ only. In total, 166 (73.1%) patients underwent mastectomies, including 67 bilateral mastectomies as first breast cancer surgery. Among those patients with retained breast tissue, the contralateral breast cancer rate was 25.3% at 5 years. Among 186 invasive tumors, 72.1% were stages I to II, 48.9% were node negative, and the most common subtypes were hormone receptor-positive/HER2-negative (40.9%) and hormone receptor positive/HER2 positive (34.4%). At a median follow-up of 69.9 months (interquartile range = 32.6-125.9), invasive hormone receptor–positive/HER2-negative disease had the highest recurrence risk among the subtypes (5-year recurrence-free survival = 61.1%, P = .001). Among those who received radiation therapy (n = 79), the 5-year radiation-induced sarcoma rate was 4.8%. Conclusion We observed high rates of ductal carcinoma in situ, hormone receptor–positive, and HER2-positive breast cancers, with a worse outcome in the hormone receptor–positive/HER2-negative luminal tumors, despite appropriate treatment. Confirmation of these findings in further studies could have implications for breast cancer care in those with Li-Fraumeni syndrome.
- Subjects
BREAST cancer surgery; HER2 positive breast cancer; BREAST cancer; LI-Fraumeni syndrome; HORMONE receptors; HORMONE receptor positive breast cancer
- Publication
JNCI: Journal of the National Cancer Institute, 2024, Vol 116, Issue 8, p1246
- ISSN
0027-8874
- Publication type
Article
- DOI
10.1093/jnci/djae074