To confirm the relationship between HABP4 and let-7i-5p, qRT-PCR was used to investigate the expression levels of HABP4 in ccRCC cells 72 h after transfection with the let-7i-5p mimic, miR-3175 inhibitor, or corresponding NCs. The gene discussed is HABP4; the disease is nonpapillary renal cell carcinoma.