
Genentech Provides Update on Astegolimab in Chronic Obstructive Pulmonary Disease
The pivotal Phase IIb ALIENTO study met its primary endpoint and showed that astegolimab reduced the annualized exacerbation rate (AER) by a statistically significant 15.4% at 52 weeks, when given every two weeks. However, the Phase III ARNASA study did not meet its primary endpoint of a statistically significant reduction in the AER, demonstrating a numerical 14.5% reduction at 52 weeks when astegolimab was given every two weeks. The results were generally consistent across secondary endpoints in both studies. The total number of exacerbations was lower than prospectively anticipated in both trials. The safety profile of astegolimab was consistent with previously reported data, with no new safety signals identified.
'While COPD remains the third leading cause of death worldwide, patients and families have limited treatment options for managing this debilitating and complex disease,' said Levi Garraway, M.D., Ph.D., chief medical officer and head of Global Product Development. 'This was the first set of studies in an 'all-comers' COPD population, and we will discuss these data with regulatory authorities to evaluate next steps for astegolimab.'
Detailed results from ALIENTO and ARNASA will be shared at an upcoming medical meeting.
About the ALIENTO and ARNASA studies
Astegolimab is an investigational, fully human anti-ST2 monoclonal antibody designed to bind with high affinity to the ST2 receptor, thereby blocking the signaling of IL-33. The astegolimab COPD pivotal program consists of two registrational studies, the Phase IIb ALIENTO (NCT05037929) and Phase III ARNASA (NCT05595642) studies. Both ALIENTO and ARNASA are double-blinded, placebo-controlled, multi-center studies that evaluate the efficacy and safety of astegolimab administered every two or every four weeks in patients with COPD on top of standard of care maintenance therapy. Patients in the studies included former and current smokers, regardless of blood eosinophil count, who have a history of frequent exacerbations. The primary analysis is based on the initial phase of the study, which consisted of 1,301 patients for ALIENTO and 1,375 patients for ARNASA. The primary endpoint is the reduction in the annualized rate of moderate and severe COPD exacerbations (AER) over the 52-week treatment period. AER is the total number of exacerbations (a sudden worsening in airway function and respiratory symptoms) occurring over the relevant treatment period, divided by the total number of patient years. Standard of care maintenance therapy for both studies was one of the following combinations - inhaled corticosteroid (ICS) plus long-acting beta-agonist (LABA); long-acting muscarinic antagonist (LAMA) plus LABA; ICS plus LAMA plus LABA.
About Genentech
Founded more than 40 years ago, Genentech is a leading biotechnology company that discovers, develops, manufactures and commercializes medicines to treat patients with serious and life-threatening medical conditions. The company, a member of the Roche Group, has headquarters in South San Francisco, California. For additional information about the company, please visit http://www.gene.com.
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