Variable Clinical Phenotypes and Relation of Interferon Signature with Disease Activity in ADA2 Deficiency

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Abstract

OBJECTIVE: An upregulation of type I interferon (IFN) stimulated genes [IFN score (IS)] was described in patients with adenosine deaminase 2 deficiency (DADA2). We describe the clinical course of 5 such patients and the role of IS as a marker of disease activity and severity.

METHODS: Expression levels of IS were determined by quantitative real-time PCR.

RESULTS: Five white patients were identified as carrying CECR1 mutations. The IS before treatment was elevated in 4 out of 5 patients and decreased after treatment.

CONCLUSION: Our data confirm the high variability of DADA2 and suggest type I IS as a biomarker of disease activity.

Original languageEnglish
JournalJournal of Rheumatology
DOIs
Publication statusE-pub ahead of print - Jan 15 2019

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