However, in C57BL/6 mice, CYP24A1 kidney expression in the 5000 IU and 100 IU+cal groups (with a similar tendency in 1000 IU+cal) differed between healthy and tumor-bearing C57BL/6 mice—CYP24A1 was downregulated in tumor-bearing and upregulated in healthy mice. This evidence concerns the gene CYP24A1 and neoplasm.