Observational Prospective Study, Evaluating the Standard of Care as Recommend by International Consensus With Zidovudine-Pegylated Interferon +/-Polychemotherapy in High Risk Adult-T-cell Lymphoma/Leukaemia (T-cell Lymphoma/Leukaemia) Followed by Allogeneic Transplant Among Eligible Patients Younger Than 65 Years Old

Patients are recruited at diagnosis or at relapse of ATLL-HR in French Caribbean islands and Guyana. They all receive Zidovudine and Pegylated Interferon (ZPI). For patients younger than 65 years old, an allogeneic donor is searching out. Patients included at relapse and with lymphoma clinico-biological subtype also receive chemotherapy (CT). Responses are assessed during ZPI+/-CT and eligible patients (depending on age, comorbidities and response criteria) receive allogeneic transplant. Patient follow-up is planned for 3 years old