Naim Ouldali (France)
Robert Debré Hospital, APHP, Paris General pediatrics, infectious disease and internal medicinePresenter of 1 Presentation
IMMUNOGLOBULINS PLUS CORTICOSTEROIDS VS IMMUNOGLOBULINS ALONE IN MIS-C ASSOCIATED WITH SARS-COV-2: A QUASI-EXPERIMENTAL PROPENSITY SCORE MATCHING ANALYSIS BASED ON A FRENCH NATIONAL SURVEILLANCE SYSTEM (ID 1137)
Abstract
Background
Multisystem Inflammatory Syndrome in Children (MIS-C) is the most severe pediatric disease associated with SARS-CoV-2 infection, potentially life threatening, but optimal therapeutic strategy remains unknown. We aimed to compare the efficacy of intravenous immunoglobulins (IVIG) plus methylprednisolone versus IVIG alone as first-line therapy.
Methods
We conducted a quasi-randomized propensity score analysis, using a 1:2 matching algorithm, based on a national surveillance system. All cases with suspected MIS-C were reported to the French National Public Health Agency. Confirmed MIS-C cases fulfilling the WHO definition were included. The primary outcome was the persistence of fever 2 days after the introduction of first-line therapy or recrudescence of fever within 7 days after the first-line therapy, which defined treatment failure. Secondary outcomes included a requirement for second-line therapy, hemodynamic support, and acute left ventricular dysfunction after first-line therapy.
Results
Among 181 children with suspected MIS-C, 111 fulfilled WHO definition. 37/72 (51%) children in the IVIG alone group and 3/34 (9%) in the IVIG+methylprednisolone group showed treatment failure. In the propensity-score analysis, treatment failure was significantly reduced in the IVIG+methylprednisolone versus IVIG alone group (OR 0.25, 95% CI 0.09 to 0.70], p=0.009). Second-line therapy, hemodynamic support and acute left-ventricular dysfunction occurring after first-line therapy were also significantly reduced in the IVIG+methylprednisolone group (OR 0.19, 95%CI [0.06; 0.61]; OR 0.21, 95%CI [0.06; 0.76]; and OR 0.20, 95%CI [0.06; 0.66], respectively).
Conclusions
IVIG plus methylprednisolone was superior to IVIG alone as first-line therapy in MIS-C.