PRODH and squamous cell lung carcinoma: Moreover, the expression of PRODH was high in 4 tumor types (GBMLGG, TCGA-LGG, TCGA-skin cutaneous melanoma [SKCM], TCGA-SKCM-M) with poor prognosis and poorly expressed in 6 tumor types (cervical squamous cell carcinoma [CESC], lung adenocarcinoma [LUAD], kidney renal papillary cell carcinoma [KIRP], prostate adenocarcinoma [PRAD], kidney renal clear cell carcinoma [KIRC], lung squamous cell carcinoma [LUSC]) with poor prognosis (Figure 4C).