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Key clinical point: Treatment with adjuvant chemotherapy significantly improved overall survival (OS) outcomes in patients with estrogen receptor-negative (ER−)/human epidermal growth factor receptor 2-negative (HER2−), T1abN0 breast cancer (BC).
Major finding: After a median follow-up of 7.7 years, a significant improvement was observed in OS with vs without chemotherapy in the overall cohort of patients with T1abN0 BC (hazard ratio 0.35; P = .02), along with both subgroups of patients with T1a (log-rank P = .001) and T1b (P = .001) BC.
Study details: Findings are from a nationwide, retrospective cohort study including 296 patients with ER− /HER2−, T1abN0 BC, of which 79.4% of patients received adjuvant chemotherapy.
Disclosures: This study was supported by the Danish Cancer Society, Denmark, and other sources. Some authors declared receiving personal fees, speaker honorarium, or research grants from various sources.
Source: Hassing CMS et al. Adjuvant chemotherapy in patients with ER-negative/HER2-negative, T1abN0 breast cancer: A nationwide study. Breast Cancer Res Treat. 2022 (Dec 28). Doi: 10.1007/s10549-022-06839-2
Key clinical point: Treatment with adjuvant chemotherapy significantly improved overall survival (OS) outcomes in patients with estrogen receptor-negative (ER−)/human epidermal growth factor receptor 2-negative (HER2−), T1abN0 breast cancer (BC).
Major finding: After a median follow-up of 7.7 years, a significant improvement was observed in OS with vs without chemotherapy in the overall cohort of patients with T1abN0 BC (hazard ratio 0.35; P = .02), along with both subgroups of patients with T1a (log-rank P = .001) and T1b (P = .001) BC.
Study details: Findings are from a nationwide, retrospective cohort study including 296 patients with ER− /HER2−, T1abN0 BC, of which 79.4% of patients received adjuvant chemotherapy.
Disclosures: This study was supported by the Danish Cancer Society, Denmark, and other sources. Some authors declared receiving personal fees, speaker honorarium, or research grants from various sources.
Source: Hassing CMS et al. Adjuvant chemotherapy in patients with ER-negative/HER2-negative, T1abN0 breast cancer: A nationwide study. Breast Cancer Res Treat. 2022 (Dec 28). Doi: 10.1007/s10549-022-06839-2
Key clinical point: Treatment with adjuvant chemotherapy significantly improved overall survival (OS) outcomes in patients with estrogen receptor-negative (ER−)/human epidermal growth factor receptor 2-negative (HER2−), T1abN0 breast cancer (BC).
Major finding: After a median follow-up of 7.7 years, a significant improvement was observed in OS with vs without chemotherapy in the overall cohort of patients with T1abN0 BC (hazard ratio 0.35; P = .02), along with both subgroups of patients with T1a (log-rank P = .001) and T1b (P = .001) BC.
Study details: Findings are from a nationwide, retrospective cohort study including 296 patients with ER− /HER2−, T1abN0 BC, of which 79.4% of patients received adjuvant chemotherapy.
Disclosures: This study was supported by the Danish Cancer Society, Denmark, and other sources. Some authors declared receiving personal fees, speaker honorarium, or research grants from various sources.
Source: Hassing CMS et al. Adjuvant chemotherapy in patients with ER-negative/HER2-negative, T1abN0 breast cancer: A nationwide study. Breast Cancer Res Treat. 2022 (Dec 28). Doi: 10.1007/s10549-022-06839-2