Heterozygous BTNL8 variants in individuals with multisystem inflammatory syndrome in children (MIS-C)

  • Evangelos Bellos
  • , Dilys Santillo
  • , Pierre Vantourout
  • , Heather R. Jackson
  • , Amedine Duret
  • , Henry Hearn
  • , Yoann Seeleuthner
  • , Estelle Talouarn
  • , Stephanie Hodeib
  • , Harsita Patel
  • , Oliver Powell
  • , Sophya Yeoh
  • , Sobia Mustafa
  • , Dominic Habgood-Coote
  • , Samuel Nichols
  • , Leire Estramiana Elorrieta
  • , Giselle D’Souza
  • , Victoria J. Wright
  • , Diego Estrada-Rivadeneyra
  • , Adriana H. Tremoulet
  • Kirsten B. Dummer, Stejara A. Netea, Antonio Condino-Neto, Yu Lung Lau, Esmeralda Núñez Cuadros, Julie Toubiana, Marisol Holanda Pena, Frédéric Rieux-Laucat, Charles Edouard Luyt, Filomeen Haerynck, Jean Louis Mége, Samya Chakravorty, Elie Haddad, Marie Paule Morin, Özge Metin Akcan, Sevgi Keles, Melike Emiroglu, Gulsum Alkan, Sadiye Kübra Tüter Öz, Sefika Elmas Bozdemir, Guillaume Morelle, Alla Volokha, Yasemin Kendir-Demirkol, Betul Sözeri, Taner Coskuner, Aysun Yahsi, Belgin Gulhan, Saliha Kanik-Yuksek, Gulsum Iclal Bayhan, Aslinur Ozkaya-Parlakay, Osman Yesilbas, Nevin Hatipoglu, Tayfun Ozcelik, Alexandre Belot, Emilie Chopin, Vincent Barlogis, Esra Sevketoglu, Emin Menentoglu, Zeynep Gokce Gayretli Aydin, Marketa Bloomfield, Suzan A. AlKhater, Cyril Cyrus, Yuriy Stepanovskiy, Anastasiia Bondarenko, Fatma Nur Öz, Meltem Polat, Jiří Fremuth, Jan Lebl, Amyrath Geraldo, Emmanuelle Jouanguy, Michael J. Carter, Paul Wellman, Mark Peters, Rebeca Pérez de Diego, Lindsey Ann Edwards, Christopher Chiu, Mahdad Noursadeghi, Alexandre Bolze, Chisato Shimizu, Myrsini Kaforou, Melissa Shea Hamilton, Jethro A. Herberg, Erica G. Schmitt, Agusti Rodriguez-Palmero, Aurora Pujol, Jihoon Kim, Aurélie Cobat, Laurent Abel, Shen Ying Zhang, Jean Laurent Casanova, Taco W. Kuijpers, Jane C. Burns, Michael Levin, Adrian C. Hayday, Vanessa Sancho-Shimizu

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Multisystem inflammatory syndrome in children (MIS-C) is a rare condition following SARS-CoV-2 infection associated with intestinal manifestations. Genetic predisposition, including inborn errors of the OAS-RNAseL pathway, has been reported. We sequenced 154 MIS-C patients and utilized a novel statistical framework of gene burden analysis, “burdenMC,” which identified an enrichment for rare predicted-deleterious variants in BTNL8 (OR = 4.2, 95% CI: 3.5-5.3, P < 10-6). BTNL8 encodes an intestinal epithelial regulator of Vγ4+γδ T cells implicated in regulating gut homeostasis. Enrichment was exclusive to MIS-C, being absent in patients with COVID-19 or bacterial disease. Using an available functional test for BTNL8, rare variants from a larger cohort of MIS-C patients (n = 835) were tested which identified eight variants in 18 patients (2.2%) with impaired engagement of Vγ4+γδ T cells. Most of these variants were in the B30.2 domain of BTNL8 implicated in sensing epithelial cell status. These findings were associated with altered intestinal permeability, suggesting a possible link between disrupted gut homeostasis and MIS-C-associated enteropathy triggered by SARS-CoV-2.

Original languageEnglish
Article numbere920240699
JournalJournal of Experimental Medicine
Volume221
Issue number12
DOIs
StatePublished - Dec 2 2024

Keywords

  • Human disease genetics
  • Infectious disease and host defense
  • Innate immunity and inflammation

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