NFIC and chromophobe renal cell carcinoma: In addition, the correlation between NFI gene expression and its DNA methylation was calculated using the cBioPortal online tool for kidney chromophobe cell carcinoma (TCGA, Firehose Legacy), kidney renal clear cell carcinoma (TCGA, Firehose Legacy), and kidney renal papillary cell carcinoma (TCGA, Firehose Legacy), and Pearson’s correction was included.