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Table 1 National Cancer Institute Common Terminology Criteria for Adverse Events v4.0 “Oral mucositis”

From: Oral mucositis associated with anti-EGFR therapy in colorectal cancer: single institutional retrospective cohort study

Grade 1 Grade 2 Grade 3 Grade 4 Grade 5
Asymptomatic or mild symptoms; intervention not indicated Moderate pain; not interfering with oral intake; modified diet indicated Severe pain; interfering with oral intake Life-threatening consequence; urgent intervention indicated Death