Before revision: The Common Terminology Criteria for Adverse Events (CTCAE), sometimes called the common toxicity criteria (CTC), are a set of criteria for the standardized classification of adverse effects of drugs used in cancer therapy.
After revision: The Common Terminology Criteria for Adverse Events (CTCAE), formerly called the Common Toxicity Criteria (CTC), are a set of criteria for the standardized classification of adverse effects of drugs used in cancer therapy.