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  • Status
    Accepting Candidates
  • Age
    18 Years - N/A
  • Sexes
  • Healthy Volunteers


The main purpose of this study is to evaluate the efficacy and safety of M281 in participants with warm autoimmune hemolytic anemia (wAIHA).


The study consists of a 24-week double-blind, placebo control period, a 144-week open-label extension period and follow-up period of 8 weeks after last study drug administration. Eligible participants will be randomized to placebo or nipocalimab (2 dose levels) during the double-blind period and nipocalimab (2 dose levels) during the open-label extension period.


Full study title Efficacy and Safety of M281 in Adults with Warm Autoimmune Hemolytic Anemia: A Multicenter, Randomized, Double-blind, Placebo-controlled Study
Protocol number OCR35404 ID NCT04119050
Phase Phase 2/Phase 3


Inclusion criteria:

  • Participants greater than or equal to (>=)18 years of age

  • Have been diagnosed with warm autoimmune hemolytic anemia (wAIHA) for at least 3 months, and are currently receiving treatment for wAIHA or have previously received treatment for wAIHA (treatment-naive participants are not eligible)

  • Participants must be able to understand and voluntarily provide written informed consent to participate in the study and comply with all study procedures

Exclusion criteria:

  • Participants must not be pregnant or breastfeeding

  • Participants must not have other clinically relevant abnormalities currently or in their history that the Investigator would deem them ineligible to participate

  • Have been diagnosed with cold antibody autoimmune hemolytic anemia (AIHA), cold agglutinin syndrome, mixed type (that is, warm and cold) AIHA, or paroxysmal cold hemoglobinuria

Lead researcher

  • Cancer Specialist (Oncologist), Hematologist (Blood Disease Specialist), Hematology and Oncology Specialist
    Anita Rajasekhar

Participate in a study

Here are some general steps to consider when participating in a research study:

  1. Step

    Contact the research team

    Call or email the research team listed within the specific clinical trial or study to let them know that you're interested. A member of the research team, such as the researcher or study coordinator, will be available to tell you more about the study and to answer any questions or concerns you may have.

  2. Step

    Get screened to confirm eligibility

    You may be asked to take part in prescreening to make sure you are eligible for a study. The prescreening process ensures it is safe for you to participate. During the prescreening process, you will be asked some questions and you may also be asked to schedule tests or procedures to confirm your eligibility.

  3. Step

    Provide your consent to participate

    If you are eligible and want to join the clinical trial or study, a member of the research team will ask for your consent to participate. To give consent, you will be asked to read and sign a consent form for the study. This consent form explains the study's purpose, procedures, risks, benefits and provides other important information, such as the study team's contact information.

  4. Step


    If you decide to participate in a clinical trial or study, the research team will keep you informed of the study requirements and what you will need to do to throughout the study. For some trials or studies, your health care provider may work with the research team to ensure there are no conflicts with other medications or treatments.