COL11A2 and fibrochondrogenesis 2: Depending on the specific variant, mutations in the human COL11A2 gene cause Stickler syndrome type 3 (STL3, MIM183840, [23]), otospondylomegaepiphyseal dysplasia (OSMED, MIM215150, [24]), Weissenbacher-Zweymueller syndrome (WZS, MIM277610, [25]), fibrochondrogenesis type 2 (FBCG2, MIM614524 [21]), or isolated deafness (DFNA13, MIM601868, [26] and DFNB53, MIM609706, [27]).