We found that the expression of IL13Rα2 was inversely correlated with the proliferative activity of melanoma cells, because the SK-IL13Rα2 cells, expressing IL13Rα2 exhibited decreased cell growth rate compared with the parental SK-MEL-28 cells (Fig. 2B), suggesting that IL13Rα2 may play an inhibitory role in in vitro proliferation of melanoma cells. The gene discussed is IL13RA2; the disease is melanoma.