This reduction was stronger for MT-1X expression, where the control-relative Cd-induced MT-1X overexpression was reduced after Zn addition, in both RA (fold change mean ± SD 45.95 ± 9.90 vs.14.46 ± 8.00; p<0.05) and OA (fold change mean ± SD 49.29 ± 6.41 vs. 26.42 ± 3.29; p<0.05) cells. Here, MT1X is linked to rheumatoid arthritis.