Task: Answer Verification
Input (English): Question: Does gene therapy enhance the antiproliferative effect of radiation in intimal hyperplasia?
Answer: Both IR alone and IR combined with a radiosensitizing agent are effective in attenuating experimental IH. However, combination therapy is synergistic and achieves greater inhibition of VSMC proliferation and may involve selective killing of radioresistant S-phase VSMCs. IR + CD/5-FC represents a novel therapeutic strategy that offers potential for long-term control of IH.
Output (English): yes