Comparisons of blood levels for BLyS (A) and APRIL (B) and treatment response. Each dot represents a baseline serum level of individual patient. CR means complete response to treatment by ACR criteria. Non-CR means partial or non-responses. ACR, American College of Rheumatology; APRIL, a proliferation-inducing ligand; BlyS, B lymphocyte activation protein.
Treamtrakanpon et al. Arthritis Research & Therapy 2012 14:R252 doi:10.1186/ar4095