In other cancer types, IGHG2 has been reported, particularly in carcinomas, such as head and neck squamous cell carcinoma, oral squamous cell carcinoma, and cervical carcinomas, as well as others like glioblastoma, although they are mainly related to prognosis [21,22,23,24]. This evidence concerns the gene IGHG2 and head and neck squamous cell carcinoma.