After signing the consent form and validating the inclusion and non-inclusion criteria, patients will be included in the study. They will be randomized unequally (2:1) into one of the study groups:~OC (Onco-Coaching) group: patients will undergo onco-coaching sessions at a rate of 1 session/month until 6 months post-inclusion (M9/R6). 73 patients will be randomized in this group~Group C (Control): Patients will not receive onco-coaching follow-up, but will be able to benefit from classical management in full autonomy. 35 patients will be randomized in this group
To measure the impact of a coaching program on the patient's health-related quality of life 15 months post-transplant (M15/R12).