Zoetis' Portela Granted European Commission's Marketing Authorization

Zoetis Inc. today announced that the European Commission has granted the company marketing authorization for Portela® (relfovetmab), making it the first monoclonal antibody (mAb) therapy with a three-month dosing interval approved for the alleviation of pain associated with osteoarthritis (OA) in cats.

Designed to provide three months of OA pain relief with a single injection, Portela targets anti-nerve growth factor (NGF), which is a key mediator of OA pain and inflammation. In September of this year, the Committee for Veterinary Medicinal Products (CVMP) recommended granting marketing authorization based on a positive benefit-risk balance of the safety and efficacy data submitted. In a nine-month field trial in Europe, Portela demonstrated effectiveness in alleviating OA pain and was found to be well tolerated, including by cats identified with kidney disease at IRIS stage 1, 2 or 31.