In 2022, Cai et al. [110], using scRNA-seq, developed a gene signature for MCs in HNSCC composed of nine genes (KIT, RAB32, CATSPER1, SMYD3, LINC00996, SOCS1, AP2M1, LAT, and HSP90B1) that accurately stratified patient survival outcomes and functioned as an independent prognostic factor. The gene discussed is KIT; the disease is head and neck squamous cell carcinoma.