CXCL12 and gastric cancer: Bioinformatics analysis revealed that the two genes have complementary sequences for miR-1273H-5P; COL1A1-014 might act as a ceRNA and compete with CXCL12 to bind with miR-1273h-5p, thus inhibiting the degradation of CXCL12 by miR-1273H-5P and promoting GC progression.