To examine the function of p75NTR‐FL/CTF in melanoma, we quantified the mRNA levels of cell‐cycle effectors, including cyclin‐dependent kinase 2 (CDK2), CDK4, cyclin D1, cyclin B1 and cyclin‐dependent kinase 1 (cdc2), by quantitative RT‐PCR (qRT‐PCR). The gene discussed is CDK4; the disease is melanoma.