A Discussion About the ADHERE Study: Safety, Tolerability, and Efficacy of Subcutaneous Efgartigimod in Patients With CIDP

In this AANEM podcast, Dr. Stino interviews Dr. Allen on the groundbreaking ADHERE study, published in Lancet Neurology in 2024, which investigated efgartigimod for treating chronic inflammatory demyelinating polyneuropathy (CIDP). As the largest CIDP trial to date with 322 patients across 146 sites, it marked the first major study of a targeted biologic therapy in CIDP. The trial featured a unique two-stage design: An open-label response phase followed by a randomized controlled phase for responders. Dr. Allen explains the rationale behind targeting IgG in CIDP, despite its less clear antibody-mediated mechanism compared to myasthenia gravis. The study demonstrated a 66-70% response rate in the open-label phase, with significantly lower relapse rates compared to placebo in the randomized phase. This research represents a significant advancement in CIDP treatment options, offering a weekly subcutaneous administration that could reduce treatment burden compared to traditional therapies.

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