Takeda announced that the U.S. Food and Drug Administration (FDA) has approved HYQVIA® [Immune Globulin Infusion 10% (Human) with Recombinant Human Hyaluronidase] for the treatment of chronic inflammatory demyelinating polyneuropathy (CIDP) as maintenance therapy to prevent the relapse of neuromuscular disability and impairment in adults. 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.

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.