Tremelimumab remains key component of Immuno-Oncology combination strategy across multiple tumour types
29 February 2016
AstraZeneca and MedImmune, its global biologics research and development arm, today announced that DETERMINE, the Phase IIb clinical trial of 10 mg/kg tremelimumab monotherapy in second or third-line treatment of unresectable malignant mesothelioma, did not meet its primary endpoint of overall survival.
Robert Iannone, Senior Vice President, Head of Immuno-Oncology, Global Medicines Development at AstraZeneca, said: “We are disappointed that tremelimumab monotherapy did not demonstrate a survival benefit in this patient population with no approved medicines beyond first-line treatment. However, we remain confident in tremelimumab’s clinical activity in combination, as shown in our recently published Study 006 trial of tremelimumab and durvalumab in non-small cell lung cancer.”
In addition to investigation as monotherapy for patients with mesothelioma, tremelimumab is being studied in combination with AstraZeneca’s anti-PD-L1 investigational immunotherapy durvalumab in multiple tumour types, including non-small cell lung cancer (NSCLC), squamous cell carcinoma of the head and neck, bladder, pancreatic, gastric and liver cancers. Preclinical data have suggested that targeting both PD-L1 and CTLA-4 may have additive or synergistic effects.1 In the recently published Study 006, combination treatment with durvalumab and tremelimumab demonstrated antitumour activity in patients with locally advanced or metastatic NSCLC, irrespective of PD-L1 status.2
The Company will complete a full evaluation of the final DETERMINE data, which will be submitted for presentation at an upcoming medical meeting in 2016.
Mesothelioma is a rare and deadly form of cancer that affects the lining of the lungs or abdomen. There is a high unmet medical need for mesothelioma treatments, with median overall survival 9 to 12 months after initial diagnosis.3 The disease causes approximately 43,000 deaths per year globally.4 In 2015, tremelimumab was granted Orphan Drug Designation by the U.S. Food and Drug Administration.