Efficacy and Safety Study of Nipocalimab for Adults With Chronic Inflammatory Demyelinating Polyneuropathy (CIDP)

  • End date
    Sep 30, 2028
  • participants needed
  • sponsor
    Janssen Research & Development, LLC
Updated on 17 September 2023
administered intravenously
immune globulin
inflammatory neuropathy


The main purpose of this study is to evaluate the safety and efficacy of nipocalimab compared to placebo in delaying relapse in adults with chronic inflammatory demyelinating polyneuropathy (CIDP) who initially respond to nipocalimab in Stage A.


CIDP is a rare, chronic autoimmune disease of the peripheral nervous system characterized by progressive weakness and impaired sensation. Nipocalimab (also referred to as JNJ-80202135 or M281) is a fully human aglycosylated immunoglobulin (Ig)G1 monoclonal antibody (mAb) designed to selectively bind, saturate, and block the IgG binding site on the endogenous neonatal Fc receptor. The study will consist of the following periods: (a) identification of participants with active CIDP (including screening [up to 4 weeks] and run-in [up to 12 weeks]); (b) open-label treatment with nipocalimab (Stage A) (12 weeks); (c) double-blind, placebo-controlled, randomized withdrawal (Stage B) (up to 52 weeks); and (d) an open-label extension (OLE) (until to 2 years after marketing authorization in the participant's local country or until nipocalimab becomes available commercially or via other continued access program, whichever comes first). Participants who discontinue treatment and intend to withdraw from the study at any point during the treatment periods (Stage A, Stage B, or the OLE) will be requested to enter an 8-weeks follow-up after the last dose of study intervention. Efficacy, safety, pharmacokinetics (PK), immunogenicity, and biomarker evaluations will be assessed.

Condition Polyradiculoneuropathy, Chronic Inflammatory Demyelinating
Treatment Placebo, Nipocalimab
Clinical Study IdentifierNCT05327114
SponsorJanssen Research & Development, LLC
Last Modified on17 September 2023


Yes No Not Sure

Inclusion Criteria

Adults greater than or equal to (>=) 18 years of age at the time of consent and as applicable, must also meet the legal age of consent in the jurisdiction in which the study is taking place
Diagnosed with Chronic Inflammatory Demyelinating Polyneuropathy (CIDP) according to criteria of the European Academy of Neurology/Peripheral Nerve Society (EAN/PNS) 2021, progressing or relapsing forms. CIDP diagnosis to be adjudicated by independent committee during screening period
Adjusted Inflammatory Neuropathy Cause and Treatment (INCAT) disability score between 2 and 9 (a score of 2 has to be exclusively from leg disability)
Fulfilling any of the following treatment conditions: a) Currently treated with pulsed corticosteroids, oral corticosteroids and/or intravenous immunoglobulin (IVIg) or subcutaneous immunoglobulin (SCIg) and the participant is willing to discontinue or taper this treatment at the first run-in visit; or b) Without previous treatment (treatment naive); or treatment with corticosteroids and/or IVIg or SCIg discontinued at least 3 months prior to screening (untreated)
Active disease as determined by CIDP Disease Activity Status (CDAS) score >= 3
Other protocol-defined inclusion criteria will apply

Exclusion Criteria

Has a history of severe and/or uncontrolled hepatic (example, viral/alcoholic/autoimmune hepatitis/cirrhosis and/or metabolic liver disease), gastrointestinal, renal, pulmonary, cardiovascular, psychiatric, neurological or musculoskeletal disorder, hypertension and/or any other medical or uncontrolled autoimmune disorder(s) (example, diabetes mellitus) or clinically significant abnormalities in screening laboratory that, might interfere with the participants full participation in the study, or might jeopardize the safety of the participant or the validity of the study results
Pure sensory CIDP or chronic immune sensory polyradiculopathy (CISP) (EAN/PNS definition)
Any other disease that could better explain the participant's signs and symptoms, such as significant persisting neurological deficits from stroke or central nervous system (CNS) trauma or peripheral neuropathy from another cause such as connective tissue disease or systemic lupus erythematosus
Polyneuropathy of other causes, including the following: Multifocal motor neuropathy (MMN); Monoclonal gammopathy of uncertain significance with antimyelin associated glycoprotein (anti-MAG) immunoglobulin M (IgM) antibodies; Hereditary motor neuropathy; Hereditary neuropathy with liability to pressure palsies (HNPP); Polyneuropathy, organomegaly, endocrinopathy, monoclonal protein and skin change syndromes; Lumbosacral radiculoplexus neuropathy; Polyneuropathy most likely due to diabetes mellitus; Polyneuropathy most likely due to systemic illnesses; Drug- or toxin-induced polyneuropathy Note: A concomitant polyneuropathy of other causes (example, a mild, stable diabetic polyneuropathy) is not necessarily exclusionary if chronic inflammatory demyelinating polyneuropathy (CIDP) is confirmed as the main diagnosis, as determined by the investigator and confirmed by the adjudication committee
Has known allergies, hypersensitivity, or intolerance to nipocalimab or its excipients
Other protocol-defined exclusion criteria will apply
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