PD-1 Inhibitor BLA Yanked After Keytruda Approval

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Agenus has withdrawn a BLA for balstilimab, its PD-1 inhibitor that was seeking an accelerated approval for second-line treatment of cervical cancer. The decision to withdraw the submission was urged by FDA due to Merck’s recent full approval of Keytruda (pembrolizumab) for treating this patient population (see earlier story).

 

Now that pembrolizumab has gained full approval, FDA no longer considered it appropriate to review the BLA for accelerated approval and recommended Agenus withdraw its submission, according to the company. The BLA had been granted a priority review and given a 12/16 user fee review action target date. Additionally, the company says it successfully completed three FDA inspections with no issued Form FDA-483s.

 

“While the commercial market for balstilimab monotherapy in second line cervical cancer was always anticipated to be small, Agenus’ priority remains developing balstilimab as a necessary component of highly effective and affordable combination therapies, ...” company CEO Garo Armen is quoted in a release as saying.

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