ATP4A and gastric cancer: Among the identified 208 candidates (Table S2), 31 were cytosolic proteins and related to PI3K/Akt signaling pathway, and 10 candidates were overexpressed in GC (YWHAZ, LDHA, ENO1, IQGAP1, ALDOA, HSP90AB1, VDAC1, EEF2, ATP4A, HSP90AA1) [13–22].