Genetic blood tests indicated that Bruton's tyrosine kinase (BTK) and a cytokine called APRIL were overexpressed in patients with primary Sjögren's syndrome who subsequently developed lymphoma, French researchers reported, suggesting that BTK inhibitors might be useful in this population.

Dr. Christina Chambers, an epidemiologist at the University of California San Diego and the principal investigator of MotherToBaby Pregnancy Studies, reviewed the available data on psoriatic arthritis and pregnancy. There is little evidence at this time that pregnancy affects PsA, though studies reliably demonstrate increase in disease activity in the post-partum period in both skin and joint disease.

A UK population-based study suggests that autoimmune diseases affect approximately one in ten individuals.