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Concomitant diagnosis of immune deficiency and Pseudomonas sepsis in a 19 month old with ecthyma gangrenosum by host whole-genome sequencing.


ABSTRACT: X-linked agammaglobulinemia (XLA, OMIM#300300) is a rare monogenic primary immunodeficiency caused by mutations in the Bruton tyrosine kinase (BTK) gene. XLA is characterized by insufficient immunoglobulin levels and susceptibility to life-threatening bacterial infections. We report on a patient that presented with ecthyma gangrenosum and septicemia. Rapid trio whole-genome sequencing (rWGS) revealed an apparently de novo hemizygous pathogenic variant (c.726dupT; p.Ile243TyrfsTer15) in the BTK gene. Metagenomic analysis of rWGS sequences that did not align to the human genome revealed 770 aligned to the Pseudomonas aeruginosa PAO1 genome. The patient was diagnosed with XLA and pseudomonal sepsis.

SUBMITTER: Sanford E 

PROVIDER: S-EPMC6318772 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature

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Concomitant diagnosis of immune deficiency and <i>Pseudomonas</i> sepsis in a 19 month old with ecthyma gangrenosum by host whole-genome sequencing.

Sanford Erica E   Farnaes Lauge L   Batalov Serge S   Batalov Serge S   Bainbridge Matthew M   Laubach Susan S   Worthen H Michael HM   Tokita Mari M   Kingsmore Stephen F SF   Kingsmore Stephen F SF   Bradley John J  

Cold Spring Harbor molecular case studies 20181217 6


X-linked agammaglobulinemia (XLA, OMIM#300300) is a rare monogenic primary immunodeficiency caused by mutations in the Bruton tyrosine kinase (<i>BTK</i>) gene. XLA is characterized by insufficient immunoglobulin levels and susceptibility to life-threatening bacterial infections. We report on a patient that presented with ecthyma gangrenosum and septicemia. Rapid trio whole-genome sequencing (rWGS) revealed an apparently de novo hemizygous pathogenic variant (c.726dupT; p.Ile243TyrfsTer15) in th  ...[more]

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