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Whole-exome sequencing-based discovery of STIM1 deficiency in a child with fatal classic Kaposi sarcoma

Open access
Byun, Minji, Abhyankar, Avinash, Lelarge, Virginie, Plancoulaine, Sabine, Palanduz, Ayse, Telhan, Leyla, Boisson, Bertrand, Picard, Capucine, Dewell, Scott, Zhao, Connie, Jouanguy, Emmanuelle, Feske, Stefan, Abel, Laurent, Casanova, Jean-Laurent·2010·Journal of Experimental Medicine

Abstract

Classic Kaposi sarcoma (KS) is exceedingly rare in children from the Mediterranean Basin, despite the high prevalence of human herpesvirus-8 (HHV-8) infection in this region. We hypothesized that rare single-gene inborn errors of immunity to HHV-8 may underlie classic KS in childhood. We investigated a child with no other unusually severe infectious or tumoral phenotype who died from disseminated KS at two years of age. Whole-exome sequencing in the patient revealed a homozygous splice-site mutation in STIM1, the gene encoding stromal interaction molecule 1, which regulates store-operated Ca2+ entry. STIM1 mRNA splicing, protein production, and Ca2+ influx were completely abolished in EBV-transformed B cell lines from the patient, but were rescued by the expression of wild-type STIM1. Based on the previous discovery of STIM1 deficiency in a single family with a severe T cell immunodeficiency and the much higher risk of KS in individuals with acquired T cell deficiencies, we conclude that STIM1 T cell deficiency precipitated the development of lethal KS in this child upon infection with HHV-8. Our report provides the first evidence that isolated classic KS in childhood may result from single-gene defects and provides proof-of-principle that whole-exome sequencing in single patients can decipher the genetic basis of rare inborn errors.

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Metadata

Authors
Byun, M., Abhyankar, A., Lelarge, V., Plancoulaine, S., Palanduz, A., Telhan, L., Boisson, B., Picard, C., Dewell, S., Zhao, C., Jouanguy, E., Feske, S., Abel, L., & Casanova, J.-L.
Venue
Journal of Experimental Medicine
Published
2010-09-27
Volume
207
Issue
11
Pages
2307-2312
ISSN
  • 0022-1007 (ISSN-L)
  • 1540-9538
OpenAlex
W2132943662
Cited by
299
References
25
FWCI
11.71
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Whole-exome sequencing-based discovery of STIM1 deficiency in a child with fatal classic Kaposi sarcoma. https://app.cochat.ai/papers/10.1084/jem.20101597
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Byun, M., Abhyankar, A., Lelarge, V., Plancoulaine, S., Palanduz, A., Telhan, L., Boisson, B., Picard, C., Dewell, S., Zhao, C., Jouanguy, E., Feske, S., Abel, L., & Casanova, J.-L. (2010). Whole-exome sequencing-based discovery of STIM1 deficiency in a child with fatal classic Kaposi sarcoma. Journal of Experimental Medicine. https://doi.org/10.1084/jem.20101597

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