 This study will be conducted in two steps. The first is the Italian translation and cross cultural adaptation of the original US NCIs version of the PRO-CTCAE questionnaire. The questionnaire will be translated and administered to a sample of 96 Italian patients. After protocol amendment in November 2016, the second step was modified and consists of test-retest reliability assessment of the Italian language version of the PRO-CTCAE questionnaire that was developed in the first step, with a minimum of 59 Italian speaking patients to be enrolled. A validation study is planned and will be the subject of a separate protocol. 