To find out if it is possible for HIV-1 patients to maintain antiretroviral medications during allogeneic bone marrow transplant

Determine the feasibility of maintaining optimal ART in HIV-1 infected patients during allogeneic hematopoietic stem cell transplant (HSCT). The primary outcome is the fraction of patients who maintain any form of anti-retroviral therapy, including enfuvirtide monotherapy, through day 60 post-transplant. If patients are unable to take oral anti-retroviral medications, but are able to tolerate subcutaneous enfuvirtide monotherapy this will be considered maintenance of ART. Failure to maintain ART will be defined as ≥ 24 hours without any anti-retroviral therapy.

Inclusion Criteria:

• HIV-1 infection, as documented by a rapid HIV-1 test or any FDA-approved HIV-1 enzyme or chemiluminescence immunoassay (E/CIA) test kit and confirmed by western blot at any time prior to study entry. Alternatively, two HIV-1 RNA values > 200 copies/mL at least 24 hours apart performed by any laboratory that has CLIA certification, or its equivalent may be used to document infection.
• Patients must be ≥ 18 years of age.
• Plan to undergo a Myeloablative, HLA matched or partially HLA-mismatched (haploidentical), related-donor bone marrow transplantation that includes high-dose posttransplantation Cy using bone marrow from a related donor:
• Plan to undergo a Nonmyeloablative, HLA matched or partially HLA-mismatched, related-donor bone marrow transplantation that includes high-dose posttransplantation Cy using bone marrow from a related donor:

Exclusion Criteria:

• Patients with a known history of enfuvirtide resistance will not be eligible for this trial.