However, findings regarding the expression of DAPK in ccRCC and adjacent non‐neoplastic renal tissues are ambiguous (Christoph et al., 2007; Wethkamp et al., 2006; Yukawa et al., 2004), although high CpG island methylation was detected in the DAPK gene promoter region (Christoph et al., 2006; Wethkamp et al., 2006). Here, DAPK1 is linked to nonpapillary renal cell carcinoma.