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A recently discovered inflammatory disease known as VEXAS syndrome is more common, variable, and dangerous than previously understood, according to results of a retrospective observational study of a large health care system database. The findings, published in JAMA, found that it struck 1 in 4,269 men over the age of 50 in a largely White population and caused a wide variety of symptoms.

“The disease is quite severe,” study lead author David Beck, MD, PhD, of the department of medicine at NYU Langone Health, said in an interview. Patients with the condition “have a variety of clinical symptoms affecting different parts of the body and are being managed by different medical specialties.”

Dr. Beck and colleagues first described VEXAS (vacuoles, E1-ubiquitin-activating enzyme, X-linked, autoinflammatory, somatic) syndrome in 2020. They linked it to mutations in the UBA1 (ubiquitin-like modifier activating enzyme 1) gene. The enzyme initiates a process that identifies misfolded proteins as targets for degradation.

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