Meanwhile, the association between miR-3622b-5p and ERBB2 expression was explored by testing the miR-3622b-5p expression in 40 patients’ ERBB2-positive breast cancer tissues and 72 patients’ ERBB2-negative breast cancer tissues, and in 17 patients’ ERBB2-positive gastric cancer tissues and 54 patients’ ERBB2-negative gastric cancer tissues. The gene discussed is ERBB2; the disease is gastric cancer.