Roche has unveiled new Phase 3 data on its immunotherapy drug Tecentriq (atezolizumab) in combination with chemotherapy (Celgene’s Abraxane) as a first-line treatment, confirming that it met its co-primary endpoint of progression-free survival (PFS) in PD-L1-positive patients with metastatic or unresectable locally advanced triple negative breast cancer (TNBC).