KIT and neoplasm: To further characterize the tumor, next-generation sequencing (NGS) was performed on formalin-fixed, paraffin-embedded (FFPE) tumor tissue, targeting a panel of 143 cancer-related genes, including WT1, TP53, ERBB2, KRAS, GNAS, HRAS, BRCA1, BRCA2, EGFR, BRAF, KIT, PDGFRA, MYC, MYCN, and NRAS.