CRP and tuberculosis: At 1 year with: Satisfied patient global assessment (PGA) (p=0.012), low bath ankylosing spondylitis metrology index (BASMI) (p= 0.031), average decrease in bath ankylosing spondylitis functional index (BASFI) (p = 0.011), visual analogue scale VAS-pain = 0 (p=0.032), the absence of tuberculosis disease (p=0.049), bath ankylosing spondylitis disease activity index (BASDAI) < 4 (p=0.006) and with a C-reactive protein (CRP) < 6mg/L (p=0.003).