. "\"Any process that modulates the frequency, rate or extent of phosphatidylinositol 3-kinase activity, the catalysis of the transfer of a phosphate group, usually from ATP, to an inositol lipid at the 3' position of the inositol ring.\" [GOC:bf]" . . "regulation of phosphatidylinositol 3-kinase activity" . "regulation of phosphoinositide 3-kinase activity" . .