ArticleCancer medicine2022
Molecular subtypes predict second breast events of ductal carcinoma in situ after breast-conserving surgery.
Article in Cancer medicine, 2022. 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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Who cites it
1 citing paper in PubMed, 3 citations in OpenAlex.
- Molecular subtypes predict second breast events of ductal carcinoma in situ after breast-conserving surgery.Cancer medicine · 2022Article
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Authors and funding
13 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
purposeCurrently, the prognostic value of molecular subtypes in ductal carcinoma in situ (DCIS) remains unclear. In this study, we explored whether molecular subtypes could predict second breast events (SBEs) in patients after breast-conserving surgery (BCS).
methodsFrom January 2008 to December 2016, 291 DCIS patients treated with BCS were retrospectively analyzed. Patients were classified into four molecular subtypes: luminal A, luminal B, human epidermal growth factor receptor 2 (HER2) overexpression, and triple-negative breast cancer (TNBC). The SBE incidence was calculated by the competing risk model and compared by Gray's test. The disease-free survival rates were estimated by the Kaplan-Meier method and compared by the log-rank test. Prognostic factors were evaluated by univariate and multivariate COX proportional hazards regression model.
resultsWith a median follow-up of 66 months, 12 SBEs were identified. The 5-year overall SBE incidence of luminal A, luminal B, HER2 overexpression, and TNBC was 2.18%, 4.25%, 15.15%, and 0.00%, respectively. In the univariate analysis, the HER2 overexpression subtype was the predictor of overall (p = 0.005), in situ (p = 0.004), and ipsilateral SBEs (p = 0.008). Patients with endocrine therapy were less likely to develop in situ SBEs (p = 0.039). Additionally, patients with closed (<2 mm) or involved margins were related to a higher risk of contralateral SBEs (p = 0.029). In the multivariate analysis, the HER2 overexpression subtype remained of prognostic values for overall (p = 0.006), in situ (p = 0.029), and ipsilateral SBEs (p = 0.012).
conclusionsThe molecular subtype, especially the HER2 overexpression subtype, was the independent prognostic factor for DCIS patients who underwent BCS.
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