SERPINB4（serpin family B member 4），癌症关联基因，基因ID：6318，这个基因编码的蛋白质是丝氨酸蛋白酶抑制剂serpin家族的一员。编码的蛋白质在许多肿瘤细胞中高度表达，并能使杀死肿瘤细胞的格兰酶M失活。这种蛋白与serpin b3一起，可以被加工成更小的片段，在银屑病中聚集形成自身抗原，可能是通过引起慢性炎症。[由RefSeq提供，2017年1月]The protein encoded by this gene is a member of the serpin family of serine protease inhibitors. The encoded protein is highly expressed in many tumor cells and can inactivate granzyme M， an enzyme that kills tumor cells. This protein， along with serpin B3， can be processed into smaller fragments that aggregate to form an autoantigen in psoriasis， probably by causing chronic inflammation. [provided by RefSeq， Jan 2017]。