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- W4225131891 abstract "The 21-gene assay provides prognostication for estrogen receptor positive, human epidermal growth factor receptor-2 negative (ER+/HER2-) early female breast cancer patients. This signature has not been validated in male breast cancer (MBC).A systematic review and meta-analysis was performed in accordance to the PRISMA guidelines. Retrospective cohort studies comparing 21-gene assay scores in female and MBC were included. Dichotomous variables were pooled as odds ratios (OR) and associated 95% confidence intervals (CI) using the Mantel-Haenszel method.Six studies including 176,338 patients were included (mean age of 63.4 years, range: 33-88). Of these, 1.0% had MBC (1826/176,338) and 99.0% were female patients (174,512/176,338). MBC patients were more likely to have increased tumour stage, nodal involvement, and grade 3 disease (all P < 0.001) In MBC patients, the mean score was 18.8 (range: 11-26) vs. 13.4 (range 0-33) in female patients (P < 0.001). In MBC patients, 22.4% had scores >30 (408/1822) versus 18.3% in female patients (31,852/174,500). In female patients, 52.0% had scores <18 (90,787/174,500) versus 47.8% in MBC (471/1822). Overall, patients with female patients were as likely to have scores <18 (OR: 1.04, 95% CI: 0.94-1.16), scores 18-30 (OR: 1.12, 95% CI: 1.00-1.26) and scores >30 (OR: 0.69, 95% CI: 0.45-1.07) as MBC patients.There are similar anticipated scores for female and MBC undergoing 21-gene expression assay testing for early stage, ER+/HER2-breast cancer. In the absence of stage matching, cautious interpretation of these results is required. Validation of the 21-gene assay in MBC is still required." @default.
- W4225131891 created "2022-05-01" @default.
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- W4225131891 date "2022-08-01" @default.
- W4225131891 modified "2023-10-01" @default.
- W4225131891 title "Relevance of the 21-gene expression assay in male breast cancer: A systematic review and meta-analysis" @default.
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- W4225131891 doi "https://doi.org/10.1016/j.breast.2022.04.009" @default.
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