Cost-Utility Analysis Hospital Versus Home in Multiple Myeloma

Inclusion Criteria: * Minimum age 18 * Enrolled in a social security scheme * Diagnosis of multiple myeloma in first line or relapse * Treatment plan including Bortezomib, adopted in a multidisciplinary meeting in a department of Hematology in Nancy (main investigator), Reims, Strasbourg University Hospitals or Metz-Thionville and Mulhouse local state-run hospitals * The patients must have agreed to the treatment protocol and to take IV or PO associated drugs prescribed in addition to Bortezomib * The patients must meet the 2003 eligibility criteria of the National Agency for Accreditation and Evaluation in Health (ANAES) for chemotherapy at home: * Absence of severe adaptive or psychological disorders, ability to understand the protocol * Absence of cognitive impairment * Availability and agreement of the attending physician * Home safety and hygiene * Do not decline to participate in the research and share their personal data Exclusion Criteria: * Already participating in another trial * Have a follow-up and/or treatment for another condition requiring a particular care during the Bortezomib treatment period