MBOAT7 and nonpapillary renal cell carcinoma: Membrane bound O-acyltransferase domain 7 (MBOAT7), as an acyltransferase, can selectively esteridate lysophosphatidylinositol (LPI) lipids into arachidonic acid-coA, forming arachidonic acid containing PI (AA-PI) in the inner lobule of ccRCC membrane 30.