Astellas Pharma Inc. announced the U.S. Food and Drug Administration (FDA) issued a complete response letter on January 4, 2024, regarding the Biologics License Application (BLA) for zolbetuximab, an investigational agent for the treatment of patients with locally advanced unresectable or metastatic human epidermal growth factor receptor 2 (HER2)-negative gastric or gastroesophageal junction (GEJ) adenocarcinoma whose tumors are claudin (CLDN) 18.2 positive.
The FDA stated that the agency cannot approve the BLA by the Prescription Drug User Fee Act (PDUFA) action date of January 12, 2024, due to unresolved deficiencies following its pre-license inspection of a third-party manufacturing facility for zolbetuximab. The FDA has not raised any concerns related to the clinical data, including efficacy or safety, of zolbetuximab, and is not requesting additional clinical studies. Astellas is working closely with the FDA and the third-party manufacturer to establish a timeline to quickly resolve the agency’s feedback. No other Astellas products are affected.
Moitreyee Chatterjee-Kishore, Ph.D., M.B.A., Senior Vice President and Head of Immuno-Oncology Development, Astellas
“We remain confident in zolbetuximab’s clinical profile and potential to fill a significant therapeutic gap for those diagnosed with advanced gastric or GEJ cancer whose tumors are CLDN18.2 positive. Astellas is committed to working with the FDA and the third-party manufacturer to address the agency’s feedback, and to bringing zolbetuximab to U.S. patients in need, as soon as possible.”
Regulatory applications for zolbetuximab are also under review in several other countries and regions, including Japan, Europe, and China.
