Significant decrease in expression of 7 out of 9 analyzed SLC carriers was observed in WD [SLC10A1 (U = 2; N = 27; p = 2 × 10–4), SLC16A1 (U = 4; N = 27; p = 3 × 10–4), SLC22A1 (U = 0; N = 27; p = 2 × 10–4), SLC22A3 (U = 26; N = 27; p = 0.016), SLC22A7 (U = 23; N = 27; p = 0.010), SLCO1B1 (U = 0; N = 27; p = 2 × 10–4), SLCO2B1 (U = 6; N = 27; p = 4 × 10–4)]. The gene discussed is SLCO2B1; the disease is Wilson disease.