NCT04656184 A Trial Comparing the Efficacy and Safety of Anakinra Versus Intravenous Immunoglobulin (IVIG) Retreatment, in Patients With Kawasaki Disease Who Failed to Respond to Initial Standard IVIG Treatment

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You will actively receive the study intervention — which may be a drug, biologic, device, or procedure.

Phase 3 trials are large pivotal studies comparing the treatment to current standard of care or placebo. Your participation directly contributes to the evidence needed for regulatory approval.

This trial targets 84 participants in total. It began in 2023-10-20 with a primary completion date of 2027-03.

Brief Summary

Kawasaki disease (KD) is the most frequent vasculitis in younger children \<5years, and the first cause of acquired ischemic myocardiopathy in childhood. Exceptionally, KD may cause early death during the acute phase by myocardial infarction, but may compromise the long-term cardiovascular outcome by accelerating atherosclerotic disease. The incidence of KD is high in far-Eastern countries and Hawaii but KD is relatively rare in other regions (10/100000 children \<5years in northern Europe) which makes it difficult to develop research on these rare population. Early recognition and treatment by intravenous immunoglobulins (IVIG) influences the prognosis positively. IVIG are the standard of care and decrease significantly the risk of coronary aneurysms. However, despite a first infusion of IVIG, 20% of KD patients remain febrile and have high risk of coronary vasculitis. Recent Japanese research group assessed additional cyclosporine treatment in first line KD treatment but failed preventing relapse. To date there is no agreement for a more effective second line treatment. Based on the auto-inflammatory pattern of KD, the investigators hypothesize that anti IL-1 blocking agents could bring a rapid and sustained effect on systemic and coronary inflammation in patients with KD. Our hypotheses are: 1. Anakinra treatment may reduce the early and long-term mortality of patients with Kawasaki Disease (KD), by a rapid and sustained effect on vascular inflammation. 2. The safety of anakinra is good, as the drug has a very short half-life, which allows its rapid withdrawal in case of serious adverse event. The use of anakinra is not associated with the risk of contamination by infectious agents, which remain even minimal, a possibility with the use of IVIG.

Eligibility Criteria

Inclusion Criteria: * Children, male and female, from 3 months to \<18 years old * Patient ≥ 5 kg * Patient with KD according to the American Heart Association definition for complete or incomplete KD. (Fever ≥ 5 days (or at least 3 days if KD with American Heart Association criteria since the third days of fever) and ≥ 4 of 5 main clinical signs: modification of the extremities, polymorphic exanthema, and bilateral bulbar not exudative conjunctivitis, erythema of the lips or oral cavity, and cervical lymph nodes usually unilateral \> 1.5 cm in diameter. * Patients who failed to respond to the standard therapy of KD, e.g. Persistence or recrudescence of fever ≥ 38°C, 48 hours after the infusion of 2g/kg of IV Ig. Patients may be screened 24h after the end of the first infusion if they remain febrile 24h after the end of the first infusion. * Patient, parents or legal guardian's written informed consent is required * Patient with health insurance (SS or CMU). * Efficient contraception for the duration of participation in the research for childbearing aged women Exclusion Criteria: * Preterm and neonates, pregnancy, pregnancy and breast feeding * Suspicion of another diagnosis * Patient with overt concomitant bacterial, viral or fungal infection * Patient previously treated with steroids and/or another biotherapy * Patient with increased risk of tuberculosis infection * Recent tuberculosis infection or with active tuberculosis * Patient with any type of immunodeficiency or cancer * Patients with severe renal impairment (CLcr \< 30 ml/minute) * Patients with hepatic insufficiency * Patients with neutropenia (ANC\<1.5 x109/l) * Patients included in another interventional protocol * Patient under the following treatments: * Preventive Antipyretics (paracetamol, NSAIDs other than aspirin 30-50mg/kg given for purpose of KD inflammation), as long as the patient receives the study medication * Immunosuppressive medications given in a period less than twice of their half-life prior the patient receives the study medication (systemic steroids, cyclosporine, tacrolimus, azathioprine, cyclophosphamide, interferon, mycophenolate, other anti-IL-1, anti IL-6, anti CD20 and anti TNF (Tumor Necrosis Factor)), plasmapheresis) * Hypersensitivity to anakinra or excipients (citric acid, sodium chloride, disodium EDTA (Ethylene Diamine Tetra Acetic), polysorbate 80, sodium hydroxide, in water for injection) * Hypersensitivity to IV Ig, or excipients (L-proline and water for injection), hypersensitivity to human normal immunoglobulin, in particular if the patient have anti-IgA antibodies (IgA: Immunoglobulin A) * Patients with type I or II hyperprolinemia * Live vaccines within 1 month prior to enrollment * Hypersensitivity to anakinra or to immunoglobulins or to excipients of Kineret® or Privigen® or to E.coli proteins * Contraindication for administration of anakinra or IVIG listed in the Summary of Products Characteristics (SmPC) of Kineret® and Privigen® * Ongoing or recent use of any other medication Known inhibitors/inducers of cytochrome P450 as listed on the link below: http://medicine.iupui.edu/clinpharm/ddis/main-table

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