regulates transcription elongation by RNA polymerase II regulation of DNA-templated transcription elongation regulation of transcription elongation by RNA polymerase II GO:0034243 biological_process regulation of transcription elongation from RNA polymerase II promoter Any process that modulates the frequency, rate or extent of transcription elongation, the extension of an RNA molecule after transcription initiation and promoter clearance by the addition of ribonucleotides, catalyzed by RNA polymerase II. regulation of gene-specific transcription elongation from RNA polymerase II promoter GO:0090039 regulation of RNA elongation from RNA polymerase II promoter biological regulation