SLITRK4 and leiomyosarcoma: However, this is also supported by the overexpression of SLITK4 in leiomyosarcoma (Davidson et al., 2014) and the identification of SLITRK4 as a causative gene in chronic myelocytic leukemia (Yamazaki et al., 2016) and hepatocellular carcinoma (Wu et al., 2020).