FDA grants priority review to Roche's Tecentriq in combination with chemotherapy for the initial treatment of extensive-stage small cell lung cancer - Seite 2

• Tecentriq in combination with carboplatin and etoposide (Arm A), or
• Placebo in combination with carboplatin and etoposide (Arm B, control arm)

During the treatment-induction phase, people received treatment on 21-day cycles for four cycles, followed by maintenance with Tecentriq or placebo until progressive disease (PD) as assessed by the investigator using Response Evaluation Criteria in Solid Tumours Version 1.1 (RECIST v1.1). Treatment could be continued until persistent radiographic PD or symptomatic deterioration was observed.

The co-primary endpoints were:

• PFS as determined by the investigator using RECIST v1.1 in the intention-to-treat (ITT) population
• OS in the ITT population

IMpower133 met its OS and PFS co-primary endpoints as per the study protocol. The analysis showed that Tecentriq and chemotherapy helped people live significantly longer, compared with chemotherapy alone (OS=12.3 versus 10.3 months; hazard ratio [HR]=0.70; 95% CI: 0.54-0.91; p=0.0069) in the ITT population. [1] The 1-year OS rate for people who received the Tecentriq-based combination was 51.7%, compared with 38.2% for people who received chemotherapy alone. The Tecentriq-based combination also significantly reduced the risk of disease worsening or death (PFS) compared with chemotherapy alone (PFS=5.2 versus 4.3 months; HR=0.77; 95% CI: 0.62-0.96; p=0.017).[1] The 1-year PFS rate for people who received the Tecentriq-based combination was 12.6%, compared with 5.4% for people who received chemotherapy alone. Safety for the Tecentriq and chemotherapy combination appeared to be consistent with the known safety profile of the individual medicines, and no new safety signals were identified with the combination.

Grade 3-4 treatment-related adverse events (AEs) were reported in 56.6% of people receiving Tecentriq plus chemotherapy, compared with 56.1% of people receiving chemotherapy alone. [1]

About SCLC
Lung cancer is the leading cause of cancer death globally.[2] Each year 1.76 million people die as a result of the disease; this translates into more than 4,800 deaths worldwide every day. [2] Lung cancer can be broadly divided into two major types: non-small cell lung cancer (NSCLC) and SCLC, with SCLC accounting for approximately 15% of all lung cancer cases. [3] Survival rates for people with SCLC vary depending on the stage (extent) of the cancer at the time of diagnosis. [4] The five-year relative survival rate for people with stage I SCLC is approximately 31%; however, at stage IV, the five-year relative survival rate declines to approximately 2%.[5]