Given that Del-1 is the target of miR-137 and promotes the progression of MDA-MB-231 breast cancer cells, assays were performed to investigate the proliferation, migration, and invasion of MDA-MB-231 transfected with either mimics or inhibitors of miR-137 to confirm whether miR-137 reverses the oncogenic effect of Del-1 in TNBC. This evidence concerns the gene EDIL3 and breast carcinoma.