We investigated the association between TP53 mutation and 21-gene recurrence score (RS) in ER-positive/HER2-negative breast cancer (BC) using data from 141 patients who underwent TP53 sequencing and Oncotype DX® tests. We detected TP53 mutations in 18 (12.8%) patients. Most patients with TP53 mutation had a high 21-gene RS (≥26). The average 21-gene RS was higher in TP53 mutant tumors. Multivariate analysis showed that mutated TP53 is an independent factor for a high 21-gene RS. Mutated TP53 remained closely associated with high 21-gene RS in patients with low pathological risk (n = 103). In the ER+/PR+/HER2-negative subset (n = 356) of The Cancer Genome Atlas, the non-luminal A intrinsic subtype was more prevalent in the group with mutant TP53. mRNA levels of p53-regulated senescence gatekeeper and cell cycle-related genes were increased in BC with mutated TP53. Mutational analysis of TP53 helped identify endocrine-resistant tumors.
|Journal||npj Breast Cancer|
|Publication status||Published - 2022 Dec|
Bibliographical noteFunding Information:
This work was supported by funds from the Basic Science Research Program through the NRF (NRF-2019R1C1C1002830), Republic of Korea. We thank Editage ( www.editage.co.kr ) for English language editing.
© 2022, The Author(s).
All Science Journal Classification (ASJC) codes
- Radiology Nuclear Medicine and imaging
- Pharmacology (medical)