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AstraZeneca Imfinzi approved in EU for limited stage small cell lung cancer

The safety profile for Imfinzi was generally manageable and consistent with the known profile of this medicine.
Cambridge: AstraZeneca has announced that Imfinzi (durvalumab) has been approved in the European Union (EU) as monotherapy for the treatment of adults with limited-stage small cell lung cancer (LS-SCLC) whose disease has not progressed following platinum-based chemoradiation therapy (CRT).
The approval by the European Commission follows the positive opinion of the Committee for Medicinal Products for Human Use and is based on results from the ADRIATIC Phase III trial, which were published in The New England Journal of Medicine.
SCLC is a highly aggressive form of lung cancer, with an estimated 8,000 people treated for LS-SCLC across the five major European countries each year. LS-SCLC typically recurs and progresses rapidly, despite initial response to standard-of-care chemotherapy and radiotherapy. The prognosis for LS-SCLC is particularly poor, as only 15-30% of patients survive for five years after diagnosis.
Suresh Senan, PhD, radiation oncologist at the Amsterdam University Medical Centers, The Netherlands, and principal investigator in the trial, said, “This approval marks a turning point for patients with limited-stage small cell lung cancer in Europe, bringing them an immunotherapy option for the first time. An unprecedented 57% of patients treated with durvalumab were still alive at three years in the ADRIATIC trial. This significant advance establishes a new benchmark in a setting where the standard of care has remained unchanged for decades.”
Dave Fredrickson, Executive Vice President, Oncology Haematology Business Unit, AstraZeneca, said, “Imfinzi has the potential to transform how limited-stage small cell lung cancer is treated as the first immunotherapy approved in Europe in this setting. As the only immunotherapy approved for both early and late-stage disease, Imfinzi is poised to become the foundation for transforming outcomes for people with small cell lung cancer.”
In the trial, results showed Imfinzi reduced the risk of death by 27% versus placebo (based on an overall survival [OS] hazard ratio [HR] of 0.73; 95% confidence interval [CI] 0.57-0.93; p=0.0104). Estimated median OS was 55.9 months for Imfinzi versus 33.4 months for placebo. An estimated 57% of patients treated with Imfinzi were alive at three years compared to 48% for placebo.
Imfinzi also reduced the risk of disease progression or death by 24% (based on a progression-free survival [PFS] HR of 0.76; 95% CI 0.61-0.95; p=0.0161) versus placebo. Median PFS was 16.6 months for Imfinzi versus 9.2 months for placebo. An estimated 46% of patients treated with Imfinzi had not experienced disease progression at two years compared to 34% for placebo.
The safety profile for Imfinzi was generally manageable and consistent with the known profile of this medicine. No new safety signals were observed.
Imfinzi is approved in the US and several other countries in this setting based on the ADRIATIC results. Regulatory applications are currently under review in Japan and several other countries for this indication. Imfinzi is also approved in combination with chemotherapy for the treatment of extensive-stage SCLC based on the CASPIAN Phase III trial.
Ruchika Sharma joined Medical Dialogue as an Correspondent for the Business Section in 2019. She covers all the updates in the Pharmaceutical field, Policy, Insurance, Business Healthcare, Medical News, Health News, Pharma News, Healthcare and Investment. She has completed her B.Com from Delhi University and then pursued postgraduation in M.Com. She can be contacted at editorial@medicaldialogues.in Contact no. 011-43720751
Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751