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Key clinical point: Young breast cancer (BC) survivors with a germline pathogenic variant had a higher risk for second primary breast cancer (SPBC) in the first 10 years after diagnosis than those without any mutation.
Major finding: Over a median follow-up of 10 years, 2.5% of BC survivors developed an SPBC. The SPBC risk was around five times higher in carriers vs noncarriers of germline pathogenic variants (subdistribution hazard ratio [sHR] 5.27; P = .01) and in women with primary in situ vs invasive BC (10.4% vs 2.1%; sHR 5.61; P = .01).
Study details: This prospective cohort study included 685 women diagnosed with stages 0-III BC at age ≤ 40 years who underwent unilateral mastectomy or lumpectomy as the primary surgery.
Disclosures: This study was funded by Susan G. Komen and the Breast Cancer Research Foundation. Four authors declared receiving grants or author royalties from various sources.
Source: Brantley KD, Rosenberg SM, Collins LC, et al. Second primary breast cancer in young breast cancer survivors. JAMA Oncol. 2024 (Apr 11). doi: 10.1001/jamaoncol.2024.0286 Source
Key clinical point: Young breast cancer (BC) survivors with a germline pathogenic variant had a higher risk for second primary breast cancer (SPBC) in the first 10 years after diagnosis than those without any mutation.
Major finding: Over a median follow-up of 10 years, 2.5% of BC survivors developed an SPBC. The SPBC risk was around five times higher in carriers vs noncarriers of germline pathogenic variants (subdistribution hazard ratio [sHR] 5.27; P = .01) and in women with primary in situ vs invasive BC (10.4% vs 2.1%; sHR 5.61; P = .01).
Study details: This prospective cohort study included 685 women diagnosed with stages 0-III BC at age ≤ 40 years who underwent unilateral mastectomy or lumpectomy as the primary surgery.
Disclosures: This study was funded by Susan G. Komen and the Breast Cancer Research Foundation. Four authors declared receiving grants or author royalties from various sources.
Source: Brantley KD, Rosenberg SM, Collins LC, et al. Second primary breast cancer in young breast cancer survivors. JAMA Oncol. 2024 (Apr 11). doi: 10.1001/jamaoncol.2024.0286 Source
Key clinical point: Young breast cancer (BC) survivors with a germline pathogenic variant had a higher risk for second primary breast cancer (SPBC) in the first 10 years after diagnosis than those without any mutation.
Major finding: Over a median follow-up of 10 years, 2.5% of BC survivors developed an SPBC. The SPBC risk was around five times higher in carriers vs noncarriers of germline pathogenic variants (subdistribution hazard ratio [sHR] 5.27; P = .01) and in women with primary in situ vs invasive BC (10.4% vs 2.1%; sHR 5.61; P = .01).
Study details: This prospective cohort study included 685 women diagnosed with stages 0-III BC at age ≤ 40 years who underwent unilateral mastectomy or lumpectomy as the primary surgery.
Disclosures: This study was funded by Susan G. Komen and the Breast Cancer Research Foundation. Four authors declared receiving grants or author royalties from various sources.
Source: Brantley KD, Rosenberg SM, Collins LC, et al. Second primary breast cancer in young breast cancer survivors. JAMA Oncol. 2024 (Apr 11). doi: 10.1001/jamaoncol.2024.0286 Source