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  • Author or Editor: Mohammad Hassan Bemanian x
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Acta Microbiologica et Immunologica Hungarica
Authors: Narges Eslami, Marzieh Tavakol, Mehrnaz Mesdaghi, Mohammad Gharegozlou, Jean-Laurent Casanova, Anne Puel, Satoshi Okada, Saba Arshi, Mohammad Hassan Bemanian, Morteza Fallahpour, Rasool Molatefi, Farhad Seif, Samaneh Zoghi, Nima Rezaei and Mohammad Nabavi

Heterozygous gain-of-function (GOF) mutations in the signal transducer and activator of transcription 1 (STAT1) have increasingly been identified as a genetic cause of autosomal-dominant (AD) chronic mucocutaneous candidiasis (CMC). In this article, we describe a 33-year-old man who experienced chronic refractory candidiasis, recurrent otitis media, and pneumonia resulting in bronchiectasis, severe oral and esophageal candidiases with strictures associated with hypothyroidism and immune hemolytic anemia. His son also suffered from persistent candidiasis, chronic diarrhea, poor weight gain, and pneumonia that resulted in his demise because of sepsis. The immunological workup showed that an inverse CD4/CD8 ratio and serum immunoglobulins were all within normal ranges. The laboratory data revealed failure in response to Candida lymphocyte transformation test. In addition, by Sanger sequencing method, we found a heterozygous mutation, Thr385Met (T385M), located in the DNA-binding domain of STAT1, which was previously shown to be GOF. These findings illustrate the broad and variable clinical phenotype of heterozygous STAT1 GOF mutations. However, more clinical information and phenotype–genotype studies are required to define the clinical phenotype caused by AD STAT1 GOF.

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