STAG3（stromal antigen 3），癌症关联基因，基因ID：10734，该基因编码的蛋白质在细胞核中表达，是一种调节细胞分裂过程中姐妹染色单体内聚的内聚蛋白复合物的亚单位。该基因突变与卵巢早衰有关。交替剪接导致编码不同亚型的多个转录变体。这个基因有多个假基因。The protein encoded by this gene is expressed in the nucleus and is a subunit of the cohesin complex which regulates the cohesion of sister chromatids during cell division. A mutation in this gene is associated with premature ovarian failure. Alternate splicing results in multiple transcript variants encoding distinct isoforms. This gene has multiple pseudogenes.关联癌症：黑色素瘤。关联化疗药物：维莫非尼，威罗菲尼。