Complex sentence: The mutations in MAP3K1 and MAP2K4 (19.6%) suggest a functional inactivation of the proteins which are codificated by these gen, that have been related with luminal A subtype of cancer, low tumor grade and low Ki67 proliferation index (good prognosis).
Split into simpler sentences: The mutations in MAP3K1 and MAP2K4 (19.6%) suggest a functional inactivation of the proteins which are codified by these genes. The proteins are associated with the luminal A subtype of cancer, a low tumor grade with a low Ki67 proliferation index (good prognosis).