FDA Approves Progenics’ Azedra for Adrenal Tumors

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FDA has approved Progenics Pharmaceuticals’ Azedra (iobenguane) injection for IV use to treat adults and adolescents age 12 and older with pheochromocytoma or paraganglioma tumors that are unresectable, have spread beyond the original tumor site, and require systemic anticancer therapy. An agency statement says this is the first FDA-approved drug for this use.

Azedra’s efficacy was shown in a single arm clinical trial in 68 patients that measured the number of patients who experienced a 50% or greater reduction of all antihypertensive medications for at least six months. The statement says the primary endpoint was supported by the secondary endpoint of overall tumor response, measured by traditional imaging criteria. The study reportedly met the primary endpoint with 25% of the patients experiencing a 50% or greater reduction of all antihypertensive medication for at least six months. Overall tumor response was achieved in 22% of the patients studied.

The most common reported side effects were lymphopenia, neutropenia, thrombocytopenia, fatigue, anemia, increased international normalized ratio, nausea, dizziness, hypertension, and vomiting.

As it is a radioactive therapeutic agent, FDA says, Azedra includes a Warning about radiation exposure to patients and family members, which should be minimized while the patient receives Azedra.

The application received Fast Track, Breakthrough Therapy, Priority Review, and Orphan Drug designations.

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