Figure 4

Correlation analysis of SHMT2, MTHFD2, and ALDH1L2, which are the enzymes involved in the THF cycle in the mitochondria. The Kaplan–Meier curves of the combination of the expression of SHMT2 and MTHFD2 for (A) colorectal cancer and (B) lung adenocarcinoma and of the combination of the expression of SHMT2, MTHFD2, and ALDH1L2 for (C) colorectal cancer and (D) lung adenocarcinoma.