Roche announced that the Phase III IMbrave050 study met its primary endpoint of recurrence-free survival (RFS) at the prespecified interim analysis. The study is evaluating Tecentriq® (atezolizumab) in combination with Avastin® (bevacizumab) as adjuvant treatment following surgery for people with early-stage hepatocellular carcinoma (HCC) at high risk of disease recurrence. The Tecentriq combination showed a statistically significant improvement in RFS in the intention-to-treat population of HCC patients who have an increased risk of recurrence following resection or ablation with curative intent, compared with active surveillance.

Overall survival data were immature at the time of interim analysis and follow-up will continue to the next analysis. Safety for Tecentriq and Avastin was consistent with the known safety profile of each therapeutic agent and with the underlying disease. Results from the IMbrave050 study will be discussed with health authorities, including the US Food and Drug Administration and the European Medicines Agency, and presented at an upcoming medical meeting.

With liver cancer incidence increasing and mortality rates rising globally, effective treatments are urgently required.1-4Roche is working in partnership with the community and leveraging its diagnostic and pharmaceutical expertise to develop solutions for patients that address unmet needs at each stage of liver cancer. IMbrave050 is part of Roche's overall commitment to drive fundamental treatment change and improve outcomes for people living with liver cancer. In unresectable HCC (uHCC), for example, Tecentriq plus Avastin was the first treatment in over a decade to significantly improve overall survival over the existing standard of care, based on data from the IMbrave150 study.

The Tecentriq combination quickly became a standard of care in uHCC and is clearly defined as a preferred front-line treatment in multiple international clinical guidelines. IMbrave050 is a Phase III global, multicentre, open-label, randomised study evaluating the efficacy and safety of adjuvant Tecentriq plus Avastin, compared with active surveillance, in people with HCC at high risk of recurrence (determined by the size and number of cancerous lesions and the histopathology results, if available) after surgical resection or ablation with curative intent. The study randomised 662 people with a ratio of 1:1 to receive either Tecentriq (1,200 mg every three weeks) plus Avastin (15 mg/kg every three weeks) for a maximum of 12 months, or no intervention with active surveillance.

The primary endpoint is independent review facility-assessed RFS. Key secondary endpoints include overall survival, RFS as determined by the investigator and RFS in patients with PD-L1-positive disease. Liver cancer is the third leading cause of cancer death and one of the few cancers where mortality is rising.3,4 More than 900,000 people are diagnosed with the disease globally each year, which translates to one person diagnosed every 90 seconds.3 Nine out of ten cases of HCC are caused by chronic liver disease, which includes chronic hepatitis B and C infection, non-alcoholic fatty liver disease (NAFLD), non-alcoholic steatohepatitis (NASH), alcohol-related liver disease (ALD) and cirrhosis resulting from these conditions.

If diagnosed in the early stage, surgery may be prescribed to remove the primary tumour, however an estimated 70-80% of people with early-stage HCC experience disease recurrence following surgery.1 Early recurrence is associated with poorer prognosis and shorter survival.1,2 Tumour size, number of tumours, and portal vein invasion are associated with an increased risk of recurrence. Tecentriq is a cancer immunotherapy approved for some of the most aggressive and difficult-to-treat forms of cancer. Tecentriq was the first cancer immunotherapy approved for the treatment of a certain type of early-stage non-small cell lung cancer (NSCLC), small cell lung cancer (SCLC) and HCC.

Tecentriq is also approved in countries around the world, either alone or in combination with targeted therapies and/or chemotherapies, for various forms of metastatic NSCLC, certain types of metastatic urothelial cancer, PD-L1-positive metastatic triple-negative breast cancer and BRAF V600 mutation-positive advanced melanoma. Tecentriq is a monoclonal antibody designed to bind with a protein called programmed death ligand-1 (PD-L1), which is expressed on tumour cells and tumour-infiltrating immune cells, blocking its interactions with both PD-1 and B7.1 receptors. By inhibiting PD-L1, Tecentriq may enable the activation of T-cells.

Tecentriq is a cancer immunotherapy that has the potential to be used as a foundational combination partner with other immunotherapies, targeted medicines and various chemotherapies across a broad range of cancers. In addition to intravenous infusion, the formulation of Tecentriq is also being investigated as a subcutaneous injection to help address the growing burden of cancer treatment for patients and healthcare systems.