Functional characterisation of the osteoarthritis genetic risk locus that resides at the gene ALDH1A2, coding for the retinoic acid synthesis enzyme RALDH2, identifies rs4646636 and rs12915901 as key target SNPs. (April 2017) - Shepherd, C.; Zhu, D.; Skelton, A.J.; Combe, J.; Reynard, L.N.; Loughlin, J.