1. A biallelic mutation in IL6ST encoding the GP130 co-receptor causes immunodeficiency and craniosynostosis
- Author
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Schwerd, T, Twigg, SRF, Aschenbrenner, D, Manrique, S, Miller, KA, Taylor, IB, Capitani, M, McGowan, SJ, Sweeney, E, Weber, A, Chen, L, Bowness, P, Riordan, A, Cant, A, Freeman, AF, Milner, JD, Holland, SM, Frede, N, Müller, M, Schmidt-Arras, D, Grimbache, B, Wall, SA, Jones, EY, Wilkie, AOM, and Uhlig, HH
- Abstract
Multiple cytokines, including interleukin 6 (IL-6), IL-11, IL-27, oncostatin M (OSM), and leukemia inhibitory factor (LIF), signal via the common GP130 cytokine receptor subunit. In this study, we describe a patient with a homozygous mutation of IL6ST (encoding GP130 p.N404Y) who presented with recurrent infections, eczema, bronchiectasis, high IgE, eosinophilia, defective B cell memory, and an impaired acute-phase response, as well as skeletal abnormalities including craniosynostosis. The p.N404Y missense substitution is associated with loss of IL-6, IL-11, IL-27, and OSM signaling but a largely intact LIF response. This study identifies a novel immunodeficiency with phenotypic similarities to STAT3 hyper-IgE syndrome caused by loss of function of GP130.