MKI67（marker of proliferation Ki-67），癌症关联基因，基因ID：4288，这个基因编码一种与细胞增殖相关并可能是必要的核蛋白。另外，还描述了拼接转录变体。X染色体上存在一个相关的假基因。This gene encodes a nuclear protein that is associated with and may be necessary for cellular proliferation. Alternatively spliced transcript variants have been described. A related pseudogene exists on chromosome X.关联癌症：乳腺癌，前列腺癌。