The correlation between the reduced percentage of Y705 phosphorylated STAT3 in BCL1 cells treated with Pt(S-pr-thiosal)2 complex and the reduced gene expression for Nanog, c-Myc and cyclin D3 indicates that this complex by modulating the STAT3 signaling affects the BCL1 cell phenotype and reduces cancer stemness. The gene discussed is CCND3; the disease is cancer.