<prompt> Answer this question truthfullyCould you provide a proper English rephrasing for What is Winchester syndrome?? It is already in proper English, so Im not sure how to rephrase it.  <response>: <reason> Winchester syndrome is an autosomal recessive connective tissue disorder caused by mutations in the matrix metalloproteinase 2 MMP2 gene. A 2006 study showed other mutations in the same gene, and observed that Winchester syndrome is probably part of a continuum that also includes Torg syndrome and nodulosis-arthropathy-osteolysis syndrome NAO. 