On January 16, 2024, Takeda announced the U.S. Food and Drug Administration (FDA) approval of HyQvia (human immune globulin infusion 10% with recombinant human hyaluronidase) as maintenance therapy for chronic inflammatory demyelinating polyneuropathy (CIDP). CIDP is a rare, progressive neuromuscular disorder often associated with weakness or loss of feeling in the arms and legs on both sides of the body. HyQvia is a subcutaneous infusion administered to patients by their health care provider or self-administered after appropriate training and was first approved by the FDA in 2014 for the treatment of primary immunodeficiency. For patients with CIDP, it is typically administered every 2-4 weeks. In clinical trials, HyQvia had lower relapse rates of CIDP (14%) compared to placebo (32.3%) after 6 months. The most common adverse effects were injection site reactions, headache, fever, nausea, fatigue, redness, itching, increased lipase levels, abdominal pain, back pain and pain in the extremities. HyQvia is currently available in the U.S. for maintenance treatment of CIDP.