CTAG1B（cancer/testis antigen 1B），癌症关联基因，基因ID：1485，这个基因编码的蛋白质是一种抗原，在许多癌症中过度表达，但在正常睾丸中也有表达。该基因存在于X染色体的一个重复区域，因此具有相同序列的相邻基因。The protein encoded by this gene is an antigen that is overexpressed in many cancers but that is also expressed in normal testis. This gene is found in a duplicated region of the X-chromosome and therefore has a neighboring gene of identical sequence.关联癌症：多发性骨髓瘤。关联化疗药物：Adoptive T-cell Transfer。