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  • Title: Radiation induced chemotherapy sensitization in trimodality therapy of stage III non small cell lung cancer. A preliminary report.
    Author: Takita H, Shin KH.
    Journal: J Exp Clin Cancer Res; 2000 Dec; 19(4):413-6. PubMed ID: 11277316.
    Abstract:
    The overall cure rate of locally advanced non-small cell lung carcinoma (NSCLC) remains poor. Although there have been encouraging reports of preoperative use of chemotherapy, more recent trend is the trimodal approach of radiation, chemo, and surgical-therapies. With the trimodal therapy, increased tumor response and resectability are reported, however, there are increased treatment related side effects. We observed that a relatively small dose of radiation given prior to induction chemotherapy greatly enhanced the tumor response to the chemotherapy without increased toxicity. A total of 18 patients (8 IIIA and 10 IIIB) were initially given 20 Gy of radiation therapy in 10 fractions and then received 2 courses of Taxol combination chemotherapy. The overall response rate was 83% (15/18) and 13 out of 18 patients underwent surgery. There was one postoperative death (not therapy related). It is speculated that the small dose of radiation therapy may have sensitized the tumor to subsequent chemotherapy, and we suggest a new hypothesis of "Radiation therapy induced chemotherapy sensitization".
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