Abstract |
We sought to reduce the risk of infectious complications and nonrelapse mortality (NRM) associated with the use of antithymocyte globulin (ATG) without compromising control of acute graft-versus-host disease (aGVHD) in patients undergoing reduced-intensity conditioning (RIC) transplantation. As part of an ongoing quality improvement effort, we lowered the dose of rabbit ATG from 7.5 mg/kg of ATG (R-ATG) (n = 39) to 6.0 mg/kg of ATG (r-ATG) (n = 33) in association with fludarabine (Flu) and busulfan (BU) RIC transplantation and then monitored patients for adverse events, relapse, and survival. Of the 72 mostly high risk (82%) patients studied, 89% received unrelated donor allografts, 25% of which were HLA-mismatched. No differences in posttransplantation full donor-cell chimerism rates were observed between the 2 ATG-dose groups (P > .05). When R-ATG versus r-ATG patients were compared, we observed no significant difference in the cumulative incidence of grade II-IV aGVHD (32% versus 27%; P = .73) or grade III-IV aGVHD (23% versus 11%; P = .28). However, the r-ATG group had significantly less cytomegalovirus (CMV) reactivation (64% versus 30%; P = .005) and bacterial infections (56% versus 18%; P = .001), a better 1-year cumulative incidence of NRM (18% versus 3%; P = .03), and a trend for better 1-year overall survival (OS) (64% versus 84%; P = .07) compared to R-ATG patients. A seemingly modest reduction in the dose of rabbit ATG did not compromise control of aGVHD or achievement of donor chimerism, but led to a significant decrease in the risk of serious infections and NRM in high-risk RIC allograft recipients.
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Authors | Mehdi Hamadani, William Blum, Gary Phillips, Patrick Elder, Leslie Andritsos, Craig Hofmeister, Lynn O'Donnell, Rebecca Klisovic, Sam Penza, Ramiro Garzon, David Krugh, Thomas Lin, Thomas Bechtel, Don M Benson, John C Byrd, Guido Marcucci, Steven M Devine |
Journal | Biology of blood and marrow transplantation : journal of the American Society for Blood and Marrow Transplantation
(Biol Blood Marrow Transplant)
Vol. 15
Issue 11
Pg. 1422-30
(Nov 2009)
ISSN: 1523-6536 [Electronic] United States |
PMID | 19822302
(Publication Type: Clinical Trial, Journal Article)
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Chemical References |
- Anti-Infective Agents
- Antilymphocyte Serum
- Immunosuppressive Agents
- Myeloablative Agonists
- Vidarabine
- Busulfan
- fludarabine
- Tacrolimus
- Methotrexate
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Topics |
- Adult
- Aged
- Animals
- Anti-Infective Agents
(therapeutic use)
- Antilymphocyte Serum
(administration & dosage, adverse effects)
- Busulfan
(administration & dosage)
- Disease Susceptibility
- Female
- Graft vs Host Disease
(drug therapy, etiology, prevention & control)
- Hematologic Neoplasms
(mortality, surgery)
- Hematopoietic Stem Cell Transplantation
(adverse effects, mortality, statistics & numerical data)
- Humans
- Immunocompromised Host
- Immunosuppressive Agents
(administration & dosage, adverse effects)
- Infection Control
- Infections
(epidemiology, etiology)
- Male
- Medical Audit
- Methotrexate
(administration & dosage)
- Middle Aged
- Myeloablative Agonists
(administration & dosage)
- Patient Isolation
- Postoperative Complications
(epidemiology, etiology, prevention & control)
- Rabbits
- T-Lymphocytes
- Tacrolimus
(administration & dosage)
- Transplantation Conditioning
(methods)
- Transplantation, Homologous
- Vidarabine
(administration & dosage, analogs & derivatives)
- Young Adult
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