Roche to present first clinical data on novel anti-TIGIT cancer immunotherapy tiragolumab at ASCO

• Phase II CITYSCAPE trial shows promising results adding tiragolumab to Tecentriq in people with PD-L1-positive metastatic non-small cell lung cancer
• Full results will be presented in an oral abstract session at the ASCO20 Virtual Scientific Program organised by the American Society of Clinical Oncology (ASCO)
  
  

Basel, 14 May 2020 – Roche (SIX: RO, ROG; OTCQX: RHHBY) today announced positive results from the Phase II CITYSCAPE trial, the first randomised study evaluating the efficacy and safety of tiragolumab plus Tecentriq (atezolizumab) compared with Tecentriq alone as an initial (first-line) treatment for people with PD-L1-positive metastatic non-small cell lung cancer (NSCLC). Tiragolumab is a novel cancer immunotherapy designed to bind to TIGIT, an immune checkpoint protein expressed on immune cells. Both TIGIT and PD-L1 play an important role in immune suppression, and blocking both pathways could enhance anti-tumour activity. The full results will be presented in an oral abstract session (Abstract #9503) at the ASCO20 Virtual Scientific Program organised by the American Society of Clinical Oncology (ASCO), which will be held 29-31 May 2020.

“We are pleased to share these first randomised anti-TIGIT results, showing that tiragolumab, our novel cancer immunotherapy, has encouraging efficacy and safety in combination with Tecentriq,” said Levi Garraway, M.D., Ph.D., chief medical officer and head of Global Product Development. “TIGIT, an immune checkpoint protein expressed on immune cells, was identified by our own scientists. By blocking both TIGIT and PD-L1 pathways simultaneously, we hope to deepen patient responses to immunotherapy and widen the circle of people who may benefit.”

At the primary analysis, tiragolumab plus Tecentriq met both co-primary endpoints in the intention-to-treat (ITT) population, showing an improvement in the objective response rate (ORR) (31.3% vs 16.2%) and a 43% reduction in the risk of disease worsening or death (progression-free survival; PFS) (median PFS= 5.4 vs 3.6 months; hazard ratio (HR)=0.57, 95% CI: 0.37–0.90) compared with Tecentriq alone.

An exploratory analysis in people with high levels of PD-L1 (TPS ≥50%) showed a clinically meaningful improvement in ORR (55.2% vs 17.2%) and a 67% reduction in the risk of disease worsening or death (median PFS=not reached vs 3.9 months; HR=0.33, 95% CI: 0.15–0.72) with the combination compared with Tecentriq alone.¹