TSK: Tampa Scale for Kinesiophobia;  ASDAS: Ankylosing Spondylitis Disease Activity Score; CRP: C-reactive protein;  BASFI: Bath Ankylosing Spondylitis Functional Index; BASMI: Bath Ankylosing Spondylitis Metrology Index; ASQoL: Ankylosing Spondylitis Quality of Life; r: Spearman's Rho correlation coefficient. This evidence concerns the gene CRP and ankylosing spondylitis.