(WASHINGTON, January 7, 2005) Stem cell transplants have become the standard of care for Patients with relapsed lymphoma, but not for Patients who suffer from both this disease and HIV. A new study showing that this treatment is a viable option for select Patients with HIV-associated lymphoma will be published in the January 15, 2005, issue of Blood, the official journal of the American Society of Hematology.

Because of the immunodeficiency associated with HIV, HIV-positive Patients are more likely to develop lymphoma than HIV-negative individuals, and the treatment for their cancer is far less likely to be successful.

Sonali Smith, M.D., Assistant Professor of Medicine at the University of Chicago notes, "The treatment of malignant lymphomas in HIV-infected individuals remains challenging, due to both the high incidence of refractory disease and the high risk of treatment-related complications. The ability of high dose chemotherapy as demonstrated in this pilot study to effectively treat even refractory disease is highly encouraging and certainly warrants further study."

Researchers from the City of Hope Cancer Center studied 20 Patients (aged 11 to 68) who had HIV and lymphoma, either Hodgkin's or non-Hodgkin's. The selected Patients had undergone previous standard-dose frontline chemotherapy for their lymphoma, but the majority either failed to achieve a complete remission or had relapsed after an initial remission. The median length of study follow-up was approximately two and a half years, with a range of about six months to six years.

All study Patients were to undergo autologous stem cell rescue. In an autologous transplant, stem cells are removed from the patient and frozen for later use. The patient receives high-dose chemotherapy to kill any lymphoma in the body, and the autologous stem cells are then infused back into the patient to repopulate the bone marrow wiped out by the chemotherapy.

Before the trans
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Contact: Laura Stark
lstark@hematology.org
American Society of Hematology
7-Jan-2005

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