scholarly journals Comparative analysis of risk factors for acute graft-versus-host disease and for chronic graft-versus-host disease according to National Institutes of Health consensus criteria

Blood ◽  
2011 ◽  
Vol 117 (11) ◽  
pp. 3214-3219 ◽  
Author(s):  
Mary E. D. Flowers ◽  
Yoshihiro Inamoto ◽  
Paul A. Carpenter ◽  
Stephanie J. Lee ◽  
Hans-Peter Kiem ◽  
...  
Keyword(s):  
Risk Factors ◽  
Graft Versus Host Disease ◽  
Acute Gvhd ◽  
Hematopoietic Cell Transplantation ◽  
Chronic Gvhd ◽  
Human Leukocyte ◽  
National Institutes Of Health ◽  
Host Disease ◽  
Graft Versus Host ◽  
Acute Graft

Abstract Risk factors for grades 2-4 acute graft-versus-host disease (GVHD) and for chronic GVHD as defined by National Institutes of Health consensus criteria were evaluated and compared in 2941 recipients of first allogeneic hematopoietic cell transplantation at our center. In multivariate analyses, the profiles of risk factors for acute and chronic GVHD were similar, with some notable differences. Recipient human leukocyte antigen (HLA) mismatching and the use of unrelated donors had a greater effect on the risk of acute GVHD than on chronic GVHD, whereas the use of female donors for male recipients had a greater effect on the risk of chronic GVHD than on acute GVHD. Total body irradiation was strongly associated with acute GVHD, but had no statistically significant association with chronic GVHD, whereas grafting with mobilized blood cells was strongly associated with chronic GVHD but not with acute GVHD. Older patient age was associated with chronic GVHD, but had no effect on acute GVHD. For all risk factors associated with chronic GVHD, point estimates and confidence intervals were not significantly changed after adjustment for prior acute GVHD. These results suggest that the mechanisms involved in acute and chronic GVHD are not entirely congruent and that chronic GVHD is not simply the end stage of acute GVHD.

scholarly journals Benefits and challenges with diagnosing chronic and late acute GVHD in children using the NIH consensus criteria

Blood ◽  
2019 ◽  
Vol 134 (3) ◽  
pp. 304-316 ◽  
Author(s):  
Geoffrey D. E. Cuvelier ◽  
Eneida R. Nemecek ◽  
Justin T. Wahlstrom ◽  
Carrie L. Kitko ◽  
Victor A. Lewis ◽  
...  
Keyword(s):  
Risk Factors ◽  
Graft Versus Host Disease ◽  
Acute Gvhd ◽  
Bronchiolitis Obliterans Syndrome ◽  
National Institutes Of Health ◽  
Hematopoietic Stem ◽  
Host Disease ◽  
Graft Versus Host ◽  
Nih Consensus Criteria ◽  
Adjudication Committee

Abstract Chronic graft-versus-host disease (cGVHD) and late acute graft-versus-host disease (L-aGVHD) are understudied complications of allogeneic hematopoietic stem cell transplantation in children. The National Institutes of Health Consensus Criteria (NIH-CC) were designed to improve the diagnostic accuracy of cGVHD and to better classify graft-versus-host disease (GVHD) syndromes but have not been validated in patients <18 years of age. The objectives of this prospective multi-institution study were to determine: (1) whether the NIH-CC could be used to diagnose pediatric cGVHD and whether the criteria operationalize well in a multi-institution study; (2) the frequency of cGVHD and L-aGVHD in children using the NIH-CC; and (3) the clinical features and risk factors for cGVHD and L-aGVHD using the NIH-CC. Twenty-seven transplant centers enrolled 302 patients <18 years of age before conditioning and prospectively followed them for 1 year posttransplant for development of cGVHD. Centers justified their cGVHD diagnosis according to the NIH-CC using central review and a study adjudication committee. A total of 28.2% of reported cGVHD cases was reclassified, usually as L-aGVHD, following study committee review. Similar incidence of cGVHD and L-aGVHD was found (21% and 24.7%, respectively). The most common organs involved with diagnostic or distinctive manifestations of cGVHD in children include the mouth, skin, eyes, and lungs. Importantly, the 2014 NIH-CC for bronchiolitis obliterans syndrome perform poorly in children. Past acute GVHD and peripheral blood grafts are major risk factors for cGVHD and L-aGVHD, with recipients ≥12 years of age being at risk for cGVHD. Applying the NIH-CC in pediatrics is feasible and reliable; however, further refinement of the criteria specifically for children is needed.

scholarly journals Acute graft-versus-host disease: analysis of risk factors after allogeneic marrow transplantation and prophylaxis with cyclosporine and methotrexate [see comments]

Blood ◽  
1992 ◽  
Vol 80 (7) ◽  
pp. 1838-1845 ◽  
Author(s):  
RA Nash ◽  
MS Pepe ◽  
R Storb ◽  
G Longton ◽  
M Pettinger ◽  
...  
Keyword(s):  
Risk Factors ◽  
Graft Versus Host Disease ◽  
Marrow Transplantation ◽  
Malignant Disease ◽  
Acute Gvhd ◽  
Host Disease ◽  
Cox Regression Analysis ◽  
Graft Versus Host ◽  
Increased Risk ◽  
Acute Graft

Abstract Previous studies of risk factors for acute graft-versus-host disease (GVHD) involved patients receiving predominantly single-agent prophylaxis. Therefore, a retrospective analysis was performed on 446 patients, from a single institution, who received transplants of marrow from HLA-identical siblings and the combination of cyclosporine (CSP) and methotrexate (MTX) to determine risk factors for acute GVHD associated with this more effective form of GVHD prophylaxis. The incidences of Grades II-IV and Grades III-IV (severe) acute GVHD were 35% and 16%, respectively. Increased clinical grades of acute GVHD in patients without advanced malignant disease were associated with a decreased survival. In a multivariate Cox regression analysis, risk factors associated with the onset of Grades II-IV acute GVHD were sex mismatch and donor parity (P = .001), increased dose of total body irradiation (TBI) (P = .001), and reduction to less than 80% of the scheduled dose of MTX (P = .02) or CSP (P = .02). The multivariate analysis indicated a relative risk of 1.37 for acute GVHD in a group defined as having advanced malignant disease at transplant; however, this difference failed to reach conventional levels of statistical significance (P = .07). Reduction of MTX and CSP occurred in up to 36% and 44% of patients, respectively, primarily because of renal or hepatic dysfunction. The periods of increased risk for the onset of acute GVHD were up to 1 week after a reduction of MTX and 2 weeks after a reduction in CSP. When only patients who developed Grades II-IV acute GVHD were considered, the more severe acute GVHD of Grades III-IV was associated with increased patient age of 40 years or greater (P = .05) and dose reductions of CSP (P = .008). Serologic status of patient and donor for cytomegalovirus (CMV), HLA antigens in the A and B loci, and isolation in a laminar air flow room during marrow transplantation, all previously identified as risk factors for acute GVHD, were not confirmed as risk factors in this study population. The toxicity of MTX and CSP and the development of acute GVHD from inadequate immunosuppression because of dose reduction warrants further trials with potentially less toxic immunosuppressive agents. Risk factors for acute GVHD should be considered in clinical management and in the design of clinical trials.

Serious Acute or Chronic Graft-Versus-Host Disease after Hematopoietic Cell Transplantation: A Comparison of Myeloablative and Non-Myeloablative Conditioning Regimens.

Blood ◽  
2006 ◽  
Vol 108 (11) ◽  
pp. 755-755
Author(s):  
Olga Sala-Torra ◽  
Paul J. Martin ◽  
Barry Storer ◽  
Mohamed Sorror ◽  
Rainer F. Storb ◽  
...  
Keyword(s):  
Cell Transplantation ◽  
Graft Versus Host Disease ◽  
Acute Gvhd ◽  
Hematopoietic Cell Transplantation ◽  
Chronic Gvhd ◽  
Univariate Analysis ◽  
Hematopoietic Cell ◽  
Host Disease ◽  
Graft Versus Host ◽  
Co Morbidity

Abstract We have previously described serious graft-versus-host disease (GVHD) as a highly undesirable outcome after allogeneic hematopoietic cell transplantation (HCT). Serious GVHD encompasses death, lengthy hospitalization, major disability, or recurrent major infections related to either acute or chronic GVHD. In a previous study, we found a 25% incidence of serious GVHD among 171 consecutive patients who had HCT after non-myeloablative (NMA) conditioning between January 1998 and May 2002. To put this observation into perspective, we applied the same criteria for serious GVHD in a cohort of 264 consecutive patients who had HCT after myeloablative (MA) conditioning during the same period of time and compared results with those of the previous study. The overall incidence of serious GVHD was 17% (44/264) in the MA group, compared to 25% (43/171) in the NMA group. There were no statistically significant differences in the incidence of grades III–IV GVHD, extensive chronic GVHD or nonrelapse mortality between the two groups (Table). Patients in the NMA group were older and had higher comorbidity scores than those in the MA group. In the univariate analysis, the hazard ratio (HR) of serious GVHD for the NMA group compared to the MA group was 1.71 (95% C.I., 1.1–2.6) (p = 0.01). After adjusting for patient age, patient and donor gender, donor type, HLA-mismatch, aggressive versus indolent malignancy at HCT, remission versus relapse at HCT, myeloid versus non–myeloid malignancy, HCT co–morbidity index, and prior donor lymphocyte infusion, the HR of serious GVHD was 1.50 (95% C.I., 0.8–2.7) (p = 0.17). After censoring for recurrent or progressive malignancy after HCT, the cumulative incidence of serious GVHD at 3 years was 21% for the NMA group and 14% for the MA group, and the HR was 1.33 (95% C.I., 0.7–2.6) (p = 0.40). Reasons for categorization of GVHD as serious (i.e., death, lengthy hospitalization, major disability, or recurrent major infections) were similar between the MA and NMA cohorts. Among the 44 patients with serious GVHD in the MA group, 19 (43%) had serious acute GVHD, and 25 (57%) had serious chronic GVHD. Among the 43 patients with serious GVHD in the NMA group, 20 (46%) had serious acute GVHD, and 30 (70%) had serious chronic GVHD. Among the 264 MA patients, 28 (11%) had grade III–IV acute GVHD and 147 (56%) had extensive chronic GVHD that did not meet the criteria for serious GVHD, compared to 7 (4%) and 84 (49%) of the 171 NMA patients, respectively. We conclude that the type of pretransplant conditioning regimen does not have a large effect on the incidence of serious GVHD after HCT. Assessment of serious GVHD provides additional useful information to acute GVHD grades and the classification of limited and extensive chronic GVHD in describing overall GVHD-related outcomes after HCT. MA NMA Outcome, n (%) n = 264 n = 171 Serious GVHD 44 (17) 43 (25) Grades III–IV acute GVHD 54 (20) 27 (16) Extensive chronic GVHD 174 (66) 114 (68) 2-year nonrelapse mortality 66 (25) 43 (25)

Mesenchymal Stem Cells for Treatment of Severe Acute Graft-Versus-Host Disease.

Blood ◽  
2006 ◽  
Vol 108 (11) ◽  
pp. 5304-5304 ◽  
Author(s):  
Katarina Le Blanc ◽  
Francesco Frassoni ◽  
Lynne Ball ◽  
Edoardo Lanino ◽  
Berit Sundberg ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Graft Versus Host Disease ◽  
Acute Gvhd ◽  
Chronic Gvhd ◽  
Third Party ◽  
Host Disease ◽  
Graft Versus Host ◽  
Acute Graft

Abstract Mesenchymal stem cells (MSC) from adult bone marrow have the capacity to differentiate into several mesenchymal tissues and inhibit T-cell alloreactivity in vitro. Within the EBMT MSC expansion consortium we have used MSC to treat grades III–IV acute graft-versus-host disease (GvHD) in 40 patients. The MSC dose was median 1.0 (range 0.4–9) 10^6 cells/kg body weight of the recipient. No side-effects were seen after MSC infusions. Nineteen patients received one dose, 19 patients received two doses, two patients received three and five doses respectively. MSC donors were in five cases HLA-identical sibling donors, 19 haploidentical donors and 41 third-party HLA-mismatched donors. Among the 40 patients treated for severe acute GvHD, 19 had complete responses, nine showed improvement, seven patients did not respond, four had stable disease and one patient was not evaluated due to short follow-up. Twenty-one patients are alive between six weeks up to 3.5 years after transplantation. Nine of these patients have extensive chronic GvHD. One patient with ALL has recurrent leukaemia and one patient has denovo AML of recipient origin. We conclude that MSC have immunomodulatory and tissue repairing effects and should be further explored as treatment of severe acute GvHD in prospective randomized trials.

scholarly journals Association of Serum Interleukin-7 Levels With the Development of Acute Graft-Versus-Host Disease

2008 ◽  
Vol 26 (35) ◽  
pp. 5735-5741 ◽  
Author(s):  
Robert M. Dean ◽  
Terry Fry ◽  
Crystal Mackall ◽  
Seth M. Steinberg ◽  
Fran Hakim ◽  
...  
Keyword(s):  
Graft Versus Host Disease ◽  
Acute Gvhd ◽  
Critical Role ◽  
Human Leukocyte ◽  
Post Transplantation ◽  
Hematopoietic Stem ◽  
Host Disease ◽  
Graft Versus Host ◽  
Interleukin 7 ◽  
Acute Graft

Purpose Morbidity from acute graft-versus-host disease (GVHD) limits the success of allogeneic hematopoietic stem-cell transplantation (HSCT) to treat malignancy. Interleukin-7 (IL-7), the principal homeostatic cytokine for T cells, is required for acute GVHD in murine models. In contrast to inflammatory cytokines (eg, IL-2, tumor necrosis factor α), IL-7 has not been studied extensively in the clinical transplant setting relative to its relationship with acute GVHD. Patients and Methods We evaluated the association of serum IL-7 levels with acute GVHD in 31 patients who were uniformly treated in a prospective clinical trial with reduced-intensity allogeneic HSCT from human leukocyte antigen–identical siblings. GVHD prophylaxis consisted of cyclosporine and methotrexate. Serum IL-7 levels and lymphocyte populations were determined at enrollment, the day of transplantation before the allograft infusion, and at specified intervals through 12 months post-transplantation. Results As expected, IL-7 levels were inversely correlated with T-cell populations (P < .00001). Acute GVHD was significantly associated with higher IL-7 levels at day +7 (P = .01) and day +14 (P = .00003) post-transplantation as well as with the allograft CD34+ cell dose (P = .01). IL-7 levels at day +14 also correlated with the severity of acute GVHD (P < .0001). In logistic regression models, these factors were highly sensitive (up to 86%) and specific (100%) for classifying whether patients developed acute GVHD. Conclusion These data support preclinical observations that IL-7 plays a critical role in inducing acute GVHD and provide a rational basis for novel approaches to prevent and treat acute GVHD through modulation of the IL-7 pathway.

Mesenchymal Stem Cells for Treatment of Severe Acute Graft-Versus-Host Disease.

Blood ◽  
2006 ◽  
Vol 108 (11) ◽  
pp. 2918-2918 ◽  
Author(s):  
Katarina Le Blanc ◽  
Francesco Frassoni ◽  
Lynne Ball ◽  
Edoardo Lanino ◽  
Berit Sundberg ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Graft Versus Host Disease ◽  
Acute Gvhd ◽  
Chronic Gvhd ◽  
Third Party ◽  
Host Disease ◽  
Graft Versus Host ◽  
Acute Graft

Abstract Mesenchymal stem cells (MSC) from adult bone marrow have the capacity to differentiate into several mesenchymal tissues and inhibit T-cell alloreactivity in vitro. Within the EBMT MSC expansion consortium we have used MSC to treat grades III-IV acute graft-versus-host disease (GvHD) in 40 patients. The MSC dose was median 1.0 (range 0.4–9) 10^6 cells/kg body weight of the recipient. No side-effects were seen after MSC infusions. Nineteen patients received one dose, 19 patients received two doses, two patients received three and five doses respectively. MSC donors were in five cases HLA-identical sibling donors, 19 haploidentical donors and 41 third-party HLA-mismatched donors. Among the 40 patients treated for severe acute GvHD, 21 had complete responses, eight showed improvement, eight patients did not respond, two had stable disease and one patient was not evaluated due to short follow-up. Twenty patients are alive between six weeks up to 3.5 years after transplantation. Nine of these patients have extensive chronic GvHD. One patient with ALL has recurrent leukaemia and one patient has denovo AML of recipient origin. We conclude that MSC have immunomodulatory and tissue repairing effects and should be further explored as treatment of severe acute GvHD in prospective randomized trials.

Early Onset of Acute Graft-Versus-Host Disease Indicating a Worse Prognosis in Terms of Chronic Graft-Versus-Host Disease and Survival Compared to Late Onset.

Blood ◽  
2007 ◽  
Vol 110 (11) ◽  
pp. 4979-4979
Author(s):  
Sang Kyun Sohn ◽  
Joon Ho Moon ◽  
Jong Gwang Kim ◽  
Yee Soo Chae ◽  
Yoon Young Cho ◽  
...  
Keyword(s):  
Graft Versus Host Disease ◽  
Early Onset ◽  
Acute Gvhd ◽  
Late Onset ◽  
Chronic Gvhd ◽  
Onset Time ◽  
Host Disease ◽  
Graft Versus Host ◽  
Grade Ii ◽  
Acute Graft

Abstract Background: Acute graft-versus-host disease (GVHD) is an important risk factor for predicting chronic GVHD. The transplant outcome can be influenced by the onset time of acute GVHD in patients who received allogeneic stem cell transplantation (SCT) Methods: The medical records of one hundred six patients with hematological malignancies who received allogeneic transplantation were retrospectively reviewed. Results: Fifty four (39.7%) patients developed grade II to IV acute GVHD within D+30 after allogeneic SCT (<D+30 group) and 13 (9.6%) patients manifested acute GVHD after D+30 (≥D+30 group). The cumulative incidence of chronic GVHD was 81.5% and 53.8% in <D+30 group and ≥D+30 group, respectively.(p<0.001) On multivariate analysis, grade II to IV acute GVHD developed before D+30 and primary diagnosis of chronic myeloid leukemia were identified as independent variables predicting chronic GVHD. The overall survival rate was significantly lower in the <D+30 group than grade 0 or I group (p<0.001). But there was no statistical difference between the group with grade 0 or I and ≥D+30 group in terms of the incidence of chronic GVHD (p=0.295). Among the 54 patients with grade II to IV acute GVHD developed at before D+30, 26 (48.1%) patients developed into quiescent chronic GVHD and 20 (37%) patients progressive chronic GVHD. The quiescent chronic GVHD showed a better survival than progressive chronic GVHD (p=0.063). Conclusion: Acute GVHD of early onset (within D+30) was regarded as a worse prognostic indicator in terms of chronic GVHD and survival.

Severe Gut Acute Graft Versus host Disease (GVHD) Influence Thrombotic Microangiopathy in 86 Allogeneic Hematopoietic Stem Cell Recipients Who Received Tacrolimus-Based Regimen for GVHD Prophylaxis

Blood ◽  
2012 ◽  
Vol 120 (21) ◽  
pp. 1955-1955
Author(s):  
Jorge Labrador ◽  
Oriana López-Godino ◽  
Lucía López-Corral ◽  
Estefanía Pérez-López ◽  
Mónica Cabrero-Calvo ◽  
...  
Keyword(s):  
Risk Factors ◽  
Stem Cell ◽  
Graft Versus Host Disease ◽  
Thrombotic Microangiopathy ◽  
Acute Gvhd ◽  
Host Disease ◽  
Allogeneic Hsct ◽  
Graft Versus Host ◽  
Gvhd Prophylaxis ◽  
Acute Graft

Abstract Abstract 1955 Background and aims: Transplantation-associated thrombotic microangiopathy (TA-TMA) is a significant complication of allogeneic stem cell transplantation (HSCT). Although endothelial injury represents the final common pathway of disease, the exact pathophysiology of TA-TMA remains unclear. A variety of potential risk factors have been proposed such as different conditioning regimens, the development of acute graft versus host disease (GVHD), concomitant infection, or the use of calcineurin inhibitor (cyclosporine, tacrolimus) and sirolimus. The recent use of both tacrolimus and sirolimus for GVHD prophylaxis suggest increasing the risk of TA-TMA, especially in patients receiving busulfan and cyclophosphamide. However, there are little studies in which tacrolimus/sirolimus GVHD prophylaxis was compared with other tacrolimus-based regimens in order to determine the really increased incidence of TA-TMA. The purpose of this study was to determine the incidence and risk factors of TA-TMA in 86 allogeneic-HSCT recipients who received tacrolimus-based regimens (with sirolimus or with methotrexate) for GVHD prophylaxis. Patients and Methods: We conducted a retrospective cohort study of 86 consecutive allogeneic-HSCT recipients (aged over 18 years) transplanted in our unit between September 2007 and July 2012; GVHD prophylaxis consisted on tacrolimus and methotrexate (N = 19) or tacrolimus and sirolimus (N= 64); 3 patients received tacrolimus and sirolimus for acute GVHD treatment. Median age was 51 years (range 20–68) and 59.3% male. 40.7% of patients were diagnosed of acute leukemia, 23.3% myelodisplastic syndrome, 23.2% lymphoproliferative disorders, 7% multiple myeloma, 5.9% other hematological malignancies. The EBMT status at the moment of HSCT was intermediate/advanced in 63% of patients. The source of stem cells was peripheral blood in 87.2% and bone marrow in 12.8%. 57% of patients receiving an unrelated donor transplant. Nineteen patients (22.1%) received a HLA-mismatch graft. Reduced intensity conditioning was administered in 74.4%. 67.4% developed acute GVHD, 58.1% grade II-IV acute GVHD. Median follow-up was 248 days (range 16–1357). The diagnosis of TA-TMA was considered according to probable TMA criteria as defined by validation study by Cho et al. Results: TA-TMA occurred in 9/86 patients (10,5%): 2/19 patients in the tacrolimus-methotrexate regimen group (10.5%) and 7/67 in the tacrolimus/sirolimus regimen group (10.4%). Median time until diagnosis of TA-TMA was 67 days (range, 37 – 405 days), and 8/9 patients were diagnosed before the day +110 post-HSCT; none of them developed chronic GVHD previously to the diagnosed of TA-TMA. Several variables have been analyzed but only acute GVHD (p=0.026) and acute gut GVHD (p=0.007) were significantly associated with TA-TMA in the univariate analysis. Of note, in the tacrolimus/sirolimus group, only acute gut GVHD (p=0.04) but not acute GVHD, was associated with TA-TMA. In the multivariate analysis, only grade ≥2 acute gut GVHD retained their association with TA-TMA development (OR = 13.33, 95% CI = 1.51 – 117.38). Conclusions: In contrast to previously published evidence, these data support that the use of tacrolimus/sirolimus GVHD prophylaxis does not increase the risk of TA-TMA compared to tacrolimus/methotrexate regimen. However, none of the patients included in our study have received busulfan-cyclophosphamide conditioning. On the other hand, the most important risk factor for TA-TMA in allogeneic-HSCT recipients who received tacrolimus-based GVHD prophylaxis regimens was grade ≥2 acute gut GVHD. Consequently we propose especially close monitoring for TA-TMA in these patients. Disclosures: No relevant conflicts of interest to declare.

scholarly journals Risk Factors for Acute Graft-Versus-Host Disease After Human Leukocyte Antigen–Identical Sibling Transplants for Adults With Leukemia

2008 ◽  
Vol 26 (35) ◽  
pp. 5728-5734 ◽  
Author(s):  
Theresa Hahn ◽  
Philip L. McCarthy ◽  
Mei-Jie Zhang ◽  
Dan Wang ◽  
Mukta Arora ◽  
...  
Keyword(s):  
Risk Factors ◽  
Bone Marrow ◽  
Human Leukocyte Antigen ◽  
Graft Versus Host Disease ◽  
Myeloid Leukemia ◽  
Acute Gvhd ◽  
Human Leukocyte ◽  
Leukocyte Antigen ◽  
Graft Versus Host ◽  
Acute Graft

Purpose Acute graft-versus-host disease (GVHD) causes substantial morbidity and mortality after human leukocyte antigen (HLA)-identical sibling transplants. No large registry studies of acute GVHD risk factors have been reported in two decades. Risk factors may have changed in this interval as transplant-related techniques have evolved. Patients and Methods Acute GVHD risk factors were analyzed in 1,960 adults after HLA-identical sibling myeloablative transplant for acute myeloid leukemia (AML), acute lymphocytic leukemia (ALL), or chronic myeloid leukemia (CML) reported by 226 centers worldwide to the Center for International Blood and Marrow Transplant Research from 1995 to 2002. Outcome was measured as time from transplant to onset of grade 2 to 4 acute GVHD, with death without acute GVHD as a competing risk. Results Cumulative incidence of grade 2 to 4 acute GVHD was 35% (95% CI, 33% to 37%). In multivariable analyses, factors significantly associated with grade 2 to 4 acute GVHD were cyclophosphamide + total-body irradiation versus busulfan + cyclophosphamide (relative risk [RR] = 1.4; P < .0001), blood cell versus bone marrow grafts in patients age 18 to 39 years (RR = 1.43; P = .0023), recipient age 40 and older versus age 18 to 39 years receiving bone marrow grafts (RR = 1.44; P = .0005), CML versus AML/ALL (RR = 1.35; P = .0003), white/Black versus Asian/Hispanic race (RR = 1.54; P = .0003), Karnofsky performance score less than 90 versus 90 to 100 (RR = 1.27; P = .014), and recipient/donor cytomegalovirus-seronegative versus either positive (RR = 1.20; P = .04). Stratification by disease showed the same significant predictors of grade 2 to 4 acute GVHD for CML; however, KPS and cytomegalovirus serostatus were not significant predictors for AML/ALL. Conclusion This analysis confirmed several previously reported risk factors for grade 2 to 4 acute GVHD. However, several new factors were identified whereas others are no longer significant. These new data may facilitate individualized risk estimates and raise several interesting biologic questions.

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