Abstract No : Abstract: #LBA18
Indication : Breast cancer
Intervention : Alpelisib
Company : Novartis
Technology : PI3K Inhibitor
Results:
With mOS follow-up of 30.8 mo, mOS was 39.3 mo (95% CI 34.1-44.9) with ALP + FUL and 31.4 mo (95% CI 26.8-41.3) with PBO + FUL (HR 0.86; 95% CI 0.64-1.15; P=0.15); OS did not cross the prespecified boundary. Median time to chemotherapy (TTC) was 23.3 mo (95% CI 15.2-28.4) with ALP + FUL and 14.8 mo (95% CI 10.5-22.6) with PBO + FUL (HR 0.72; 95% CI 0.54-0.95). In pts with lung and/or liver metastases, mOS was 37.2 mo (95% CI 28.7-43.6) with ALP + FUL and 22.8 mo (95% 19.0-26.8) with PBO + FUL (HR 0.68; 95% CI 0.46-1.00). No new safety signals were observed with longer follow-up.
Conclusion:
Though not statistically significant, OS was prolonged by a clinically relevant ≈8 mo with ALP when added to FUL in HR+, HER2−, PIK3CA-mut ABC. mTTC was also prolonged with ALP + FUL vs PBO + FUL. Coupled with the statistically and clinically significant PFS, these data further support ALP + FUL in this poorer prognostic population of pts with PIK3CA-mut ABC
