MED19（mediator complex subunit 19），癌症关联基因，基因ID：219541，该基因编码的蛋白质是介体复合体的一个亚单位，它与基因特异性调节因子结合，为基础rna聚合酶ii转录机制提供支持。该基因与多种癌症的生长有关，抑制其表达可抑制这些癌症的生长和扩散。已经发现了两个编码不同亚型的转录变体。[由RefSeq提供，2015年11月]The protein encoded by this gene is a subunit of the Mediator complex， which binds to gene-specific regulatory factors and provides support for the basal RNA polymerase II transcription machinery. This gene has been implicated in the growth of several types of cancer， and inhibition of its expression inhibits the growth and spread of these cancers. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq， Nov 2015]。