Figure 1: Triple-array analysis. Semi-quantitative RT-PCR, SNP array, and MSP results for STEAP4 gene in the case used for triplearray analysis. (a) Downregulation of STEAP4 in tumor sample compared with corresponding normal tissue. (b) Small deletion was shown at 7p, but no deletion or amplification was detected at 7q21.12 (STEAP4 locus). (c) Promoter hypermethylation was only seen in the tumor sample.