ACTB and neoplasm: RQ by RPL29 (T/N = 2.23×, p = 0.071), HPRT1 (T/N = 1.34×, p = 0.258), ACTB (T/N = 1.60×, p = 0.395), 18S rRNA (T/N = 1.36×, p = 0.527) and RPL29-HPRT1 (T/N = 1.76×, p = 0.086) also showed increasing GPNMB expression in tumor stomach tissues but it was not statistically significant.