Breast cancer, metastatic

LBA15 - Primary outcome of the phase III SYD985.002/TULIP trial comparing [vic-]trastuzumab duocarmazine to physician’s choice treatment in patients with pre-treated HER2-positive locally advanced or metastatic breast cancer

Saura Manich, et al.


Treatment with SYD985 significantly improved PFS in comparison with standard PC and may provide a new treatment option for patients with pre-treated locally advanced or metastatic HER2-positive MBC.


LBA16 - KEYNOTE-355: Final results from a randomized, double-blind phase III study of first-line pembrolizumab + chemotherapy vs placebo + chemotherapy for metastatic TNBC

Cortés, et al.


Pembro + chemo showed a statistically significant and clinically meaningful improvement in OS vs chemo alone in pts with previously untreated locally recurrent inoperable or metastatic TNBC whose tumors expressed PD-L1 (CPS ≥10). No new safety signals were identified.


LBA17_PR - Overall survival (OS) results from the phase III MONALEESA-2 (ML-2) trial of postmenopausal patients (pts) with hormone receptor positive/human epidermal growth factor receptor 2 negative (HR+/HER2−) advanced breast cancer (ABC) treated with endocrine therapy (ET) ± ribociclib (RIB)

G.N. Hortobagyi, et al.


To date, this is the first report of a statistically significant and clinically meaningful OS benefit with a 1L CDK4/6i in postmenopausal pts with HR+/HER2– ABC. After a median follow-up of >6.5 y, median OS improvement was >12 mo for 1L RIB + LET vs PBO + LET.