What does VEXAS mean?
VEXAS is an acronym defined as follows:
- vacuoles are often seen in cells identified in bone marrow biopsies from patients with VEXAS syndrome.
- E1 ubiquitin activating enzyme, encoded by the UBA1 gene which is mutated in patients.
- the UBA1 gene is located on the X chromosome.
- patients have autoinflammation.
- the mutations are somatic, meaning they are acquired at some point in life and not inherited.
What are the symptoms of VEXAS syndrome?
Patients with VEXAS can have a wide range of inflammatory symptoms affecting multiple organs including:
- skin (rashes that can be painful).
- cartilaginous structures (pain and swelling of the ear and nose).
- lungs (cough and shortness of breath).
- joints (swelling and pain).
- vasculature (inflammation of vessels).
Patients often have fever and extreme fatigue. The hematologic features can include anemia, low platelets, and blood clots. On many occasions patients with VEXAS have associated clinical diagnoses, including relapsing polychondritis, polyarteritis nodosa, sweet syndrome and myelodysplastic syndrome.
How do you diagnose and treat VEXAS syndrome?
A VEXAS diagnosis uses genetic testing, which looks for mutations in the UBA1 gene located in the X chromosome.
There is no standardized treatment for VEXAS currently, however the inflammatory features can be treated with steroids and other immunosuppressants. Some patients may be candidates for bone marrow transplantation. Since VEXAS can affect multiple organs, patients will need a team of doctors—including a rheumatologist and hematologist—to manage their disease.
Who gets VEXAS syndrome?
Research studies indicate that VEXAS is primarily observed in biological males.
What research is being done in VEXAS syndrome?
Since the syndrome was first described in 2020, there has been a worldwide interest in understanding the disease. At the NIH, a clinical trial is currently underway to evaluate stem cell transplant as a possible treatment for patients with VEXAS. The David Beck Lab at New York University is also actively researching the condition.
For more information on research being conducted at the NIAMS please contact: