[Common toxicity criteria: version 2.0, an improved reference for grading the adverse reaction of cancer treatment].

In 1998, the National Cancer Institute (NCI) made an effort to revise and expand the Common Toxicity Criteria (CTC) in cancer treatment. New CTC version 2.0 includes more than 279 individual adverse events with more than 24 of these applicable to adverse reaction category. The Radiation Therapy Oncology Group(RTOG) Acute Radiation Morbidity Scoring Criteria and BMT Complex/Multi-Component Events were added to New CTC version 2.0. CTC version 2.0 represents an improvement in the evaluation and grading of toxicity for all modalities in cancer treatment.