Evaluation of SLC25A42 and Ki67 expressions by IHC analysis indicated that knockdown or overexpression of SLC25A42 (Fig. 3C) had no notable effect on the percentage of proliferating cells (Fig. 3D), while the TUNEL assay showed negatively regulated cell apoptosis by SLC25A42 in subcutaneous GC tissues (Fig. 3E). This evidence concerns the gene MKI67 and gastric cancer.