SMARCA4 and neoplasm: Initially, we tested the expression of four putative PthA2 targets, including an ortholog of the pepper upa22, which encodes a xyloglucan endotransglucosylase (XET), a RAC-GTPase gene (RAC), and an ortholog of the rat BRG1, implicated in cell wall strengthening, auxin response, and tumor development, respectively (Table 1).