Clinical Trials / Research Studies
Clinical Trials / Research Studies

NI-0501: A Study to Investigate the Safety and Efficacy of an Anti-IFNγ mAb in Children Affected by Primary Hemophagocytic Lymphohistiocytosis

Why are we doing this research?

Cincinnati Children's is participating in a research study sponsored by NovImmune S.A. to evaluate the safety, tolerability and preliminary efficacy of a new drug (NI-0501) aimed at controlling disease activity in patients diagnosed with primary hemophagocytic lymphohistiocytosis who show an unsatisfactory response to current recommended treatment or show intolerance to treatment.

The new drug will be administered on top of a glucocorticosteroid, which is usually part of the current recommended treatment.

Who can participate?


Children and adolescents, up to and including 18 years old at diagnosis of primary HLH, who, after having received conventional therapy, continue to have active disease, are potentially eligible.  Children or adolescents with intolerance to HLH conventional treatment can also participate in the study.




  • Immune Deficiency and Histiocytosis


  • Female
  • Male

What will happen in the study?

There is an anticipated 8-week treatment period with NI-0501 followed by an additional 4 week follow up period after the last dose of NI-0501. However, the protocol also allows for a shorter treatment duration, in case hematopoietic stem cell transplantation can be performed before the end of the treatment period, or a longer treatment duration in case transplantation must be postponed. The following is a list of procedures that will take place during the study:

Screening Period

Before treatment begins, you/your child will have tests done to confirm the study eligibility and assess the disease status. This will includes drawing blood and other samples, looking for infections, testing the immune system, spinal tap, test/picture to measure heart rhythm (electrocardiogram, ECG), and radiology tests such as ultrasound and chest x-ray (as well as an MRI if needed).

Treatment Period

The treatment regimen is divided into two phases:

·         Treatment Period 1 is characterized by close monitoring during NI-0501 administrations, 6 infusions given every 3 days. In addition, patients will receive Dexamethasone for the duration of the treatment with the study therapy.

·         Treatment Period 2 is characterized by less intense monitoring and includes 14 infusions, or less depending on the patient’s needs and conditions (Weeks 3 to 8). The time between NI-0501 infusions can be increased; however this will not impact the safety assessments which will occur at least every 6 days.

All patients will be followed closely throughout the 8 weeks on study to test for response to treatment and to look for side effects of the medications with routine and other tests, such as physical examinations, blood tests, ECG and radiology tests. 


What are the good things that can happen from this research?

You or your child may or may not receive direct benefit from participating in this study. There may be an improved chance of successfully treating your child’s HLH. Information learned in this study may benefit other patients with HLH in the future.  Two patients suffering from primary HLH have been treated so far with NI-0501 and then proceeded to transplantation.

Will I get all the facts about the study?

Parents and adult subjects will be given a consent form that thoroughly explains all of the details of the study. The consent form will cover all of the procedures, risks, benefits, compensation, who to contact with questions or concerns and more. A member of the study staff will review the consent form with you and answer your questions. Study procedures will not begin until the parent/guardian or you, the participating subject, have signed this consent form.


Sharon Mitchell

Cincinnati Children’s Hospital Medical Center
Cancer and Blood Diseases Institute
Blood and Marrow Transplantation and Immune Deficiencies

Phone:  513-636-4174