A Study of Nipocalimab Administered to Adults With Generalized Myasthenia Gravis

Purpose

The purpose of this study is to evaluate the efficacy and safety of nipocalimab compared to placebo in participants with generalized myasthenia gravis (gMG).

Condition

  • Myasthenia Gravis

Eligibility

Eligible Ages
Over 18 Years
Eligible Genders
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Diagnosis of myasthenia gravis (MG) with generalized muscle weakness meeting the clinical criteria for generalized myasthenia gravis (gMG) as defined by the Myasthenia Gravis Foundation of America (MGFA) Clinical Classification Class II a/b, III a/b, or IVa/b at screening - Myasthenia Gravis - Activities of Daily Living (MG-ADL) score of greater than or equal to (>=) 6 at screening and baseline - Has sufficient venous access to allow drug administration by infusion and blood sampling as per the protocol - A woman of childbearing potential must have a negative highly sensitive serum (beta-human chorionic gonadotropin [beta-hCG]) at screening and a negative urine pregnancy test at Day 1 prior to administration of study intervention - A male participant must agree not to donate sperm for the purpose of reproduction during the study and for a minimum 90 days after receiving the last administration of study intervention

Exclusion Criteria

  • Has any confirmed or suspected clinical immunodeficiency syndrome not related to treatment of his/her gMG, or has a family history of congenital or hereditary immunodeficiency unless confirmed absent in the participant - Has MGFA Class I disease or presence of MG crisis (MGFA Class V) at screening, history of MG crisis within 1 month of screening, or fixed weakness (and/or 'burnt out' MG) - Has had a thymectomy within 12 months prior to screening, or thymectomy is planned during the study - Has known allergies, hypersensitivity, or intolerance to nipocalimab or its excipients - Has experienced myocardial infarction, unstable ischemic heart disease, or stroke within 12 weeks of screening

Study Design

Phase
Phase 3
Study Type
Interventional
Allocation
Randomized
Intervention Model
Parallel Assignment
Primary Purpose
Treatment
Masking
Triple (Participant, Investigator, Outcomes Assessor)

Arm Groups

ArmDescriptionAssigned Intervention
Experimental
Nipocalimab 		Double-blind Placebo-controlled Phase: Participants will receive nipocalimab intravenous (IV) infusions once every 2 weeks (q2w) up to 24 weeks during double-blind placebo-controlled phase. Open-label Extension (OLE) Phase: Participants who complete the double-blind placebo-controlled phase will enter the OLE phase and continue to receive nipocalimab q2w IV infusion till study end.
  • Drug: Nipocalimab
    Nipocalimab will be administered as an IV infusion.
    Other names:
    • JNJ-80202135, M281
Placebo Comparator
Placebo 		Double-blind Placebo-controlled Phase: Participants will receive matching placebo of nipocalimab IV infusion q2w up to 24 weeks during double-blind placebo-controlled phase.
  • Drug: Placebo
    Matching placebo will be administered as an IV infusion.

Recruiting Locations

University of Kansas Medical Center
Kansas City, Kansas 66160

More Details

Status
Recruiting
Sponsor
Janssen Research & Development, LLC

Study Contact

Study Contact
844-434-4210
Participate-In-This-Study@its.jnj.com