FDA approves HyQvia as maintenance therapy in adults with chronic inflammatory demyelinating polyneuropathy (CIDP)

HyQvia first received approval in the U.S. in 2014 for the treatment of primary immunodeficiency (PI) in adults, which has since been expanded to include children 2-16 years old.

HyQvia is the only FDA-approved combination of immunoglobulin (IG) and hyaluronidase, which makes it a facilitated subcutaneous immunoglobulin (SCIG) infusion. For adults with CIDP, HyQvia can be infused up to once monthly (every two, three or four weeks) due to the hyaluronidase component, which facilitates the dispersion and absorption of large IG volumes in the subcutaneous space between the skin and the muscle. Because it is delivered subcutaneously, HyQvia can be administered by a healthcare professional in a medical office, infusion center or at a patient’s home. In addition, it can be self-administered after appropriate patient or caregiver training.

“With the FDA approval of HyQvia for CIDP, which builds on our expertise in rare neuroimmunological and neuromuscular disorders, we can now offer a personalized maintenance treatment option for adults with this debilitating disease,” said Giles Platford, president of Takeda’s Plasma-Derived Therapies Business Unit. “Research and clinical experience have shown that IG therapy is effective as maintenance treatment in adults with CIDP, and we hope that this approval for HYQVIA is the first of several around the world as we strive to deliver our broad and diverse IG portfolio to more people with complex neuroimmunological diseases.”

This approval is based on results from a randomized, double-blinded, placebo-controlled study (ADVANCE-CIDP 1) and a single-arm, open-label, extension study (ADVANCE-CIDP 3) that evaluated the efficacy and safety of HyQvia as a maintenance therapy in adults with CIDP. The efficacy evaluation included 122 adults from ADVANCE-CIDP 1 with a confirmed diagnosis of CIDP and who had remained on a stable dosing regimen of intravenous immunoglobulin (IVIG) therapy for at least three months prior to screening. The analysis of the primary endpoint demonstrated a statistically significant difference between the relapse rates in the HyQvia group (N=57, 14.0%) compared to the placebo group (N=65, 32.3%) (p=0.0314). The treatment difference of -18.3% (two-sided 95% CI: -32.1%, -3.1%) indicated that HyQvia demonstrated superiority over placebo in preventing relapse of CIDP.

The safety of HyQvia in adults with CIDP was evaluated across ADVANCE-CIDP 1 (N=62) and ADVANCE-CIDP 3 (N=79). The most common adverse reactions observed in >5% of study subjects in clinical studies of HyQvia for CIDP were local reactions, headache, pyrexia, nausea, fatigue, erythema, pruritus, increased lipase, abdominal pain, back pain, and pain in extremity.