CTAG2（cancer/testis antigen 2），癌症关联基因，基因ID：30848，该基因编码一种自身免疫性肿瘤抗原，属于肿瘤睾丸抗原的eso/lage家族。这种蛋白在包括黑色素瘤、乳腺癌、膀胱癌和前列腺癌在内的多种癌症中表达。这种蛋白也在正常睾丸组织中表达。PMID:10399963中描述了该基因的另一种开放式阅读框产品。这种被称为骆驼的替代蛋白是一种肿瘤抗原，被黑色素瘤特异性细胞毒性T淋巴细胞识别。交替剪接导致多个转录变体。This gene encodes an autoimmunogenic tumor antigen that belongs to the ESO/LAGE family of cancer-testis antigens. This protein is expressed in a wide array of cancers including melanoma， breast cancer， bladder cancer and prostate cancer. This protein is also expressed in normal testis tissue. An alternative open reading frame product of this gene has been described in PMID:10399963. This alternate protein， termed CAMEL， is a tumor antigen that is recognized by melanoma-specific cytotoxic T-lymphocytes. Alternate splicing results in multiple transcript variants.关联癌症：多发性骨髓瘤。关联化疗药物：Adoptive T-cell Transfer。