. "Any process that modulates the frequency, rate or extent of RNA polymerase II transcriptional preinitiation complex assembly." . . "regulation of RNA polymerase II transcriptional preinitiation complex assembly" . "regulation of RNA polymerase II transcriptional pre-initiation complex assembly" . "regulation of RNA polymerase II transcriptional pre-initiation complex biosynthesis" . "regulation of RNA polymerase II transcriptional preinitiation complex formation" . . . . .