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Browsing by Author "Newhams, Margaret"
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Item Characteristics and Outcomes of US Children and Adolescents With Multisystem Inflammatory Syndrome in Children (MIS-C) Compared With Severe Acute COVID-19(AMA, 2021-02) Feldstein, Leora R.; Tenforde, Mark W.; Friedman, Kevin G.; Newhams, Margaret; Rose, Erica Billig; Dapul, Heda; Soma, Vijaya L.; Maddux, Aline B.; Mourani, Peter M.; Bowens, Cindy; Maamari, Mia; Hall, Mark W.; Riggs, Becky J.; Giuliano, John S.; Singh, Aalok R.; Li, Simon; Kong, Michele; Schuster, Jennifer E.; McLaughlin, Gwenn E.; Schwartz, Stephanie P.; Walker, Tracie C.; Loftis, Laura L.; Hobbs, Charlotte V.; Halasa, Natasha B.; Doymaz, Sule; Babbitt, Christopher J.; Hume, Janet R.; Gertz, Shira J.; Irby, Katherine; Clouser, Katharine N.; Cvijanovich, Natalie Z.; Bradford, Tamara T.; Smith, Lincoln S.; Heidemann, Sabrina M.; Zackai, Sheemon P.; Wellnitz, Kari; Nofziger, Ryan A.; Horwitz, Steven M.; Carroll, Ryan W.; Rowan, Courtney M.; Tarquinio, Keiko M.; Mack, Elizabeth H.; Fitzgerald, Julie C.; Coates, Bria M.; Jackson, Ashley M.; Young, Cameron C.; Son, Mary Beth F.; Patel, Manish M.; Newburger, Jane W.; Randolph, Adrienne G.; Overcoming COVID-19 Investigators; Pediatrics, School of MedicineImportance Refinement of criteria for multisystem inflammatory syndrome in children (MIS-C) may inform efforts to improve health outcomes. Objective To compare clinical characteristics and outcomes of children and adolescents with MIS-C vs those with severe coronavirus disease 2019 (COVID-19). Setting, Design, and Participants Case series of 1116 patients aged younger than 21 years hospitalized between March 15 and October 31, 2020, at 66 US hospitals in 31 states. Final date of follow-up was January 5, 2021. Patients with MIS-C had fever, inflammation, multisystem involvement, and positive severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) reverse transcriptase–polymerase chain reaction (RT-PCR) or antibody test results or recent exposure with no alternate diagnosis. Patients with COVID-19 had positive RT-PCR test results and severe organ system involvement. Exposure SARS-CoV-2. Main Outcomes and Measures Presenting symptoms, organ system complications, laboratory biomarkers, interventions, and clinical outcomes. Multivariable regression was used to compute adjusted risk ratios (aRRs) of factors associated with MIS-C vs COVID-19. Results Of 1116 patients (median age, 9.7 years; 45% female), 539 (48%) were diagnosed with MIS-C and 577 (52%) with COVID-19. Compared with patients with COVID-19, patients with MIS-C were more likely to be 6 to 12 years old (40.8% vs 19.4%; absolute risk difference [RD], 21.4% [95% CI, 16.1%-26.7%]; aRR, 1.51 [95% CI, 1.33-1.72] vs 0-5 years) and non-Hispanic Black (32.3% vs 21.5%; RD, 10.8% [95% CI, 5.6%-16.0%]; aRR, 1.43 [95% CI, 1.17-1.76] vs White). Compared with patients with COVID-19, patients with MIS-C were more likely to have cardiorespiratory involvement (56.0% vs 8.8%; RD, 47.2% [95% CI, 42.4%-52.0%]; aRR, 2.99 [95% CI, 2.55-3.50] vs respiratory involvement), cardiovascular without respiratory involvement (10.6% vs 2.9%; RD, 7.7% [95% CI, 4.7%-10.6%]; aRR, 2.49 [95% CI, 2.05-3.02] vs respiratory involvement), and mucocutaneous without cardiorespiratory involvement (7.1% vs 2.3%; RD, 4.8% [95% CI, 2.3%-7.3%]; aRR, 2.29 [95% CI, 1.84-2.85] vs respiratory involvement). Patients with MIS-C had higher neutrophil to lymphocyte ratio (median, 6.4 vs 2.7, P < .001), higher C-reactive protein level (median, 152 mg/L vs 33 mg/L; P < .001), and lower platelet count (<150 ×103 cells/μL [212/523 {41%} vs 84/486 {17%}, P < .001]). A total of 398 patients (73.8%) with MIS-C and 253 (43.8%) with COVID-19 were admitted to the intensive care unit, and 10 (1.9%) with MIS-C and 8 (1.4%) with COVID-19 died during hospitalization. Among patients with MIS-C with reduced left ventricular systolic function (172/503, 34.2%) and coronary artery aneurysm (57/424, 13.4%), an estimated 91.0% (95% CI, 86.0%-94.7%) and 79.1% (95% CI, 67.1%-89.1%), respectively, normalized within 30 days. Conclusions and Relevance This case series of patients with MIS-C and with COVID-19 identified patterns of clinical presentation and organ system involvement. These patterns may help differentiate between MIS-C and COVID-19.Item NFKB2 haploinsufficiency identified via screening for IFN-α2 autoantibodies in children and adolescents hospitalized with SARS-CoV-2-related complications(Elsevier, 2023) Bodansky, Aaron; Vazquez, Sara E.; Chou, Janet; Novak, Tanya; Al-Musa, Amer; Young, Cameron; Newhams, Margaret; Kucukak, Suden; Zambrano, Laura D.; Mitchell, Anthea; Wang, Chung-Yu; Moffitt, Kristin; Halasa, Natasha B.; Loftis, Laura L.; Schwartz, Stephanie P.; Walker, Tracie C.; Mack, Elizabeth H.; Fitzgerald, Julie C.; Gertz, Shira J.; Rowan, Courtney M.; Irby, Katherine; Sanders, Ronald C., Jr.; Kong, Michele; Schuster, Jennifer E.; Staat, Mary A.; Zinter, Matt S.; Cvijanovich, Natalie Z.; Tarquinio, Keiko M.; Coates, Bria M.; Flori, Heidi R.; Dahmer, Mary K.; Crandall, Hillary; Cullimore, Melissa L.; Levy, Emily R.; Chatani, Brandon; Nofziger, Ryan; Overcoming COVID-19 Network Study Group Investigators; Geha, Raif S.; DeRisi, Joseph; Campbell, Angela P.; Anderson, Mark; Randolph, Adrienne G.; Pediatrics, School of MedicineBackground: Autoantibodies against type I IFNs occur in approximately 10% of adults with life-threatening coronavirus disease 2019 (COVID-19). The frequency of anti-IFN autoantibodies in children with severe sequelae of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection is unknown. Objective: We quantified anti-type I IFN autoantibodies in a multicenter cohort of children with severe COVID-19, multisystem inflammatory syndrome in children (MIS-C), and mild SARS-CoV-2 infections. Methods: Circulating anti-IFN-α2 antibodies were measured by a radioligand binding assay. Whole-exome sequencing, RNA sequencing, and functional studies of peripheral blood mononuclear cells were used to study any patients with levels of anti-IFN-α2 autoantibodies exceeding the assay's positive control. Results: Among 168 patients with severe COVID-19, 199 with MIS-C, and 45 with mild SARS-CoV-2 infections, only 1 had high levels of anti-IFN-α2 antibodies. Anti-IFN-α2 autoantibodies were not detected in patients treated with intravenous immunoglobulin before sample collection. Whole-exome sequencing identified a missense variant in the ankyrin domain of NFKB2, encoding the p100 subunit of nuclear factor kappa-light-chain enhancer of activated B cells, aka NF-κB, essential for noncanonical NF-κB signaling. The patient's peripheral blood mononuclear cells exhibited impaired cleavage of p100 characteristic of NFKB2 haploinsufficiency, an inborn error of immunity with a high prevalence of autoimmunity. Conclusions: High levels of anti-IFN-α2 autoantibodies in children and adolescents with MIS-C, severe COVID-19, and mild SARS-CoV-2 infections are rare but can occur in patients with inborn errors of immunity.Item NFKB2 haploinsufficiency identified via screening for IFNα2 autoantibodies in children and adolescents hospitalized with SARS-CoV-2-related complications(Elsevier, 2023-04) Bodansky, Aaron; Vazquez, Sara E.; Chou, Janet; Novak, Tanya; Al-Musa, Amer; Young, Cameron; Newhams, Margaret; Kocukak, Suden; Zambrano, Laura D.; Mitchell, Anthea; Wang, Chung-Yu; Moffitt, Kristin; Halasa, Natasha B.; Loftis, Laura L.; Schwartz, Stephanie P.; Walker, Tracie C.; Mack, Elizabeth H.; Fitzgerald, Julie C.; Gertz, Shira J.; Rowan, Courtney M.; Irby, Katherine; Sanders, Ronald C., Jr.; Kong, Michele; Schuster, Jennifer E.; Staat, Mary A.; Zinter, Matt S.; Cvijanovich, Natalie Z.; Tarquinio, Keiko M.; Coates, Bria M.; Flori, Heidi R.; Dahmer, Mary K.; Crandall, Hillary; Cullimore, Melissa L.; Levy, Emily R.; Chatani, Brandon; Nofziger, Ryan; Overcoming COVID-19 Network Study Group Investigators; Geha, Raif S.; DeRisi, Joseph; Campbell, Angela P.; Anderson, Mark; Randolph, Adrienne G.; Pediatrics, School of MedicineBackground Autoantibodies against type I interferons (IFNs) occur in approximately 10% of adults with life-threatening COVID-19. The frequency of anti-IFN autoantibodies in children with severe sequelae of SARS-CoV-2 infection is unknown. Objective To quantify anti-Type I IFN autoantibodies in a multi-center cohort of children with severe COVID-19, Multisystem Inflammatory Syndrome in Children (MIS-C), and mild SARS-CoV-2 infections. Methods Circulating anti-IFNa2 antibodies were measured by a radioligand binding assay. Whole exome sequencing (WES), RNA-sequencing, and functional studies of peripheral blood mononuclear cells were used to study any patients with levels of anti-IFNα2 autoantibodies exceeding the assay’s positive control. Results Among 168 patients with severe COVID-19, 199 with MIS-C, and 45 with mild SARS-CoV-2 infections, only one had high levels of anti-IFNα2 antibodies. Anti-IFNα2 autoantibodies were not detected in patients treated with intravenous immunoglobulin prior to sample collection. WES identified a missense variant in the ankyrin domain of NFKB2, encoding the p100 subunit of NF-kB essential for non-canonical NF-kB signaling. Her peripheral blood mononuclear cells exhibited impaired cleavage of p100 characteristic of NFKB2 haploinsufficiency, an inborn error of immunity with a high prevalence of autoimmunity. Conclusions High levels of anti-IFNα2 autoantibodies in children and adolescents with MIS-C, severe COVID-19, and mild SARS-CoV-2 infections are rare, but can occur in patients with inborn errors of immunity. Clinical implications Anti-IFNα2 autoantibodies should prompt diagnostic evaluation for inborn errors of immunity if identified in children or adolescents.