Neidhart Neidhart M M Baraliakos Baraliakos X X Seemayer Seemayer C C Zelder Zelder C C Gay Gay RE RE Michel Michel BA BA Boehm Boehm H H Gay Gay S S Braun Braun J J Expression of cathepsin K and MMP-1 indicate persistent osteodestructive activity in longstanding ankylosing spondylitis Expression of cathepsin K and MMP-1 indicate persistent osteodestructive activity in longstanding ankylosing spondylitis Ann Rheum Dis Ann Rheum Dis 2009 2009 68 68 8 8 1334 1334 1339 1339 10.1136/ard.2008.092494 10.1136/ard.2008.092494 supplied-pmid 18678577? This evidence concerns the gene CTSK and ankylosing spondylitis.