Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts: Gene/Protein Disease Symptom Drug Enzyme Compound   Target Concepts: Gene/Protein Disease Symptom Drug Enzyme Compound

---

Query: UMLS:C0026986 (myelodysplastic syndrome)
14,926 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

We report a retrospective analysis of 128 consecutive patients with high-risk myelodysplastic syndrome (MDS) and AML who received an alemtuzumab-based reduced-intensity conditioning hematopoietic SCT (RIC HSCT). The median recipient age was 53 years (range 21-72 years). A total of 49 (38%) recipients had a sibling donor and 79 (62%) had a volunteer-unrelated donor. The hematopoietic cell transplantation-specific comorbidity index (HCT-CI) was assigned to all patients with a score of 0 in 40 (31%), of 1-2 in 45 (35%) and >or=3 in 43 (34%) patients. The 3-year non-relapse mortality (NRM) was 31%, disease-free survival (DFS) was 41% and overall survival (OS) was 46%. The 3-year NRM for patients with a HCT-CI score of 0, 1-2 or >or=3 was 16, 24 and 42%, respectively. The 3-year DFS and OS by HCT-CI was 58 and 69% (score 0), 39 and 39% (score 1-2) and 24 and 32% (score >or=3), respectively. On multivariate analysis, HCT-CI was an independent variable affecting 3-year NRM, DFS and OS (P-value=0.04, 0.01 and <0.01, respectively). Although the disease stage at the time of transplant was an additional independent predictive variable on transplant outcomes, recipient age (>or<50 years) did not have a significant predictive impact. In MDS or AML patients with advanced disease receiving alemtuzumab-based RIC HSCT, the HCT-CI provides an important means of stratifying patients with a high risk of inferior transplant outcomes.
...
PMID:Impact of pretransplant comorbidities on alemtuzumab-based reduced-intensity conditioning allogeneic hematopoietic SCT for patients with high-risk myelodysplastic syndrome and AML. 1976 82

Cytogenetics is an important prognostic factor for patients with myelodysplastic syndromes (MDS). However, existing cytogenetics grouping schemes are based on patients treated with supportive care, and may not be optimal for patients undergoing allo-SCT. We proposed earlier an SCT-specific cytogenetics grouping scheme for patients with MDS and AML arising from MDS, based on an analysis of patients transplanted at the Dana-Farber Cancer Institute/Brigham and Women's Hospital. Under this scheme, abnormalities of chromosome 7 and complex karyotype are considered adverse risk, whereas all others are considered standard risk. In this retrospective study, we validated this scheme on an independent multicenter cohort of 546 patients. Adverse cytogenetics was the strongest prognostic factor for outcome in this cohort. The 4-year relapse-free survival and OS were 42 and 46%, respectively, in the standard-risk group, vs 21 and 23% in the adverse group (P<0.0001 for both comparisons). This grouping scheme retained its prognostic significance irrespective of patient age, disease type, earlier leukemogenic therapy and conditioning intensity. Therapy-related disease was not associated with increased mortality in this cohort, after taking cytogenetics into account. We propose that this SCT-specific cytogenetics grouping scheme be used for patients with MDS or AML arising from MDS who are considering or undergoing SCT.
...
PMID:Multicenter validation study of a transplantation-specific cytogenetics grouping scheme for patients with myelodysplastic syndromes. 1978 76

The use of umbilical or placental donor cord blood transplantation (CBT) in children with malignant and non-malignant diseases has witnessed important progress, mainly because of better cord blood donor choice and patient selection translating into better patient outcome. Approximately 2000 children with malignant diseases (about 75 % with acute leukemias) have been transplanted with a related (n=199) or unrelated CBT (UCBT, n=1663) and reported to Eurocord registry from 1990-2008. Disease-specific studies have been carried out after UCBT for acute lymphoblastic and myeloid leukemia and myelodysplastic syndromes in others to identify the risk factors that may improve outcomes. Outcomes after CBT have been compared with other alternative allogeneic hematopoietic SCT (HSCT) donors. Briefly, after CBT, myeloid engraftment is delayed, acute and chronic GVHD decreased and disease-free survival was not statistically different when compared with HLA identical and other alternative HSCT donor. Therefore, any physician has to carefully evaluate, for each single pediatric patient in need of an allograft, all the possible alternatives in order to choose the best hematopoietic stem cell donor, taking into account type of disease, urgency of transplantation, donor characteristics and center experience. This review will analyze the current results of CBT for pediatric patients with malignant diseases and the advantages and limitations of using this stem cell source.
...
PMID:Pediatric related and unrelated cord blood transplantation for malignant diseases. 1980 21

Patients with AML or myelodysplastic syndrome who relapse after allo-SCT have a poor prognosis. In the search for novel treatment strategies for these patients, we conducted a multicenter retrospective analysis and identified 22 patients treated with the DNA-methylation inhibitor 5-azacytidine (5-Aza). Patients received a median number of two cycles 5-Aza (range 1-8) at a dose of 100 mg/m(2) over 5 days following relapse. Eighteen patients (82%) also received a median number of two donor lymphocyte infusions (DLI, range 1-5). Sixteen patients (72%) responded to 5-Aza treatment and five patients (23%) achieved a CR. 5-Aza-induced CR lasted for 433 days (median, range 114-769). Median survival and the estimated 2-year survival rate were 144 days and 23%, respectively. Acute GVHD after DLI was seen in six patients (33%) and four of these patients developed chronic GVHD of the skin. There were no treatment-related deaths. Patients who achieved halving of leukocyte counts after the first 5-Aza cycle had a superior median survival of 802 days compared with 135 days (P=0.0025) in all other patients. On univariate analysis, the achievement of this halving of leukocyte counts was identified as a significant predictor of survival.
...
PMID:5-Azacytidine for the treatment of patients with acute myeloid leukemia or myelodysplastic syndrome who relapse after allo-SCT: a retrospective analysis. 1982 Jul 29

For patients with myeloid malignancies who relapse after allogeneic stem cell transplantation (allo-SCT), one salvage option is a second SCT. We retrospectively analyzed outcomes of the second allo-SCT in 25 patients who received at least 2 allografts from related/unrelated donors due to relapse of acute myeloid leukemia, myelodysplastic syndrome or myelofibrosis after the first SCT. A minority of the acute myeloid leukemia/myelodysplastic syndrome patients had reached complete hematological remission before the second SCT (6/25, 24%). Reduced conditioning strategies were performed in the majority (n = 23). Complete remission was achieved in all 21 cases with available data after the second SCT, but relapse was seen in 11/25 patients (44%). After a median follow-up of 18 months (range 6-47), 8/25 patients (32%) were still alive, and of those, 6 (24%) were in stable remission. In 9 cases mortality was associated to relapse and in 8 cases to transplant-related causes (treatment-related mortality; 8/25, 32%). In conclusion, a second SCT offers the chance of stable remission for some patients relapsing with a myeloid malignancy after a first allo-SCT, although high treatment-related mortality and relapse rates remain a problem. Efforts should concentrate on an optimization of conditioning strategies, immunosuppression and post-transplant surveillance for this specific situation.
...
PMID:Second allogeneic stem cell transplantation in myeloid malignancies. 1988 74

Allogeneic hematopoietic SCT (HSCT) is currently the only curative treatment for myelodysplastic syndrome (MDS). However, many patients cannot find an HLA-matched donor. We have developed a new protocol for HLA-mismatched (including haploidentical) HSCT using G-CSF-primed BM plus G-CSF-mobilized PBSCs without in vitro T-cell depletion. A total of 36 patients diagnosed with high-risk MDS (RAEB (refractory anemia with excess blasts) or RAEBt (RAEB in transformation)) underwent transplantation from HLA-mismatched family donors. All patients achieved sustained myeloid engraftment. The cumulative incidence of grades II-IV acute GVHD (aGVHD) was 60% and that of grades III and IV aGVHD was 15%. The 2-year cumulative incidence of chronic GVHD was 56%. After a median follow-up of 17 months, 4 patients had relapsed and died and 25 patients were still alive. The 2-year probability of leukemia-free survival (LFS) was 65%. Patients transplanted within 7 months of diagnosis had better LFS (89 vs 43% ). Severe aGVHD decreased the LFS significantly by increasing non-relapse mortality (NRM). This study confirms that HLA-mismatched HSCT is a treatment option for MDS. Patients with high-risk MDS benefit from receiving HSCT early in the course of the disease.
...
PMID:HLA-mismatched hematopoietic SCT without in vitro T-cell depletion for myelodysplastic syndrome. 2006

Women with breast cancer who receive adjuvant therapy are at risk for developing therapy-related myelodysplastic syndrome (MDS) or AML (tMDS/AML). Patients with tMDS/AML are often referred for consideration of allogeneic hematopoietic SCT (HSCT). However, the outcomes of HSCT in such patients have not been well described. We report a retrospective study of all women who were treated with HSCT for MDS or AML at our institution between 1991 and 2008. We compared the transplantation outcomes for 24 women with a history of breast cancer with those for 271 women with de novo disease. Three-year OS and disease-free survival (DFS) for patients with a history of breast cancer were 41 and 45%, respectively. The cumulative incidences of tMDS/AML relapse and non-relapse mortality (NRM) were 38 and 17%, respectively. Those outcomes were very similar to those of patients with de novo disease. In multivariable analyses, a history of breast cancer had no impact on OS, DFS, relapse or NRM. A significant proportion of women with tAML/MDS after breast cancer treatment experience DFS after HSCT, similar to that of patients with de novo MDS or AML. This justifies consideration of HSCT for selected patients in this setting.
...
PMID:Outcome of allo-SCT for women with MDS or AML occurring after breast cancer therapy. 2015 38

The effect of natural killer (NK) cell alloreactivity on the outcome of unrelated hematopoietic SCT (HSCT) remains a topic of debate. NK cell alloreactivity after allogeneic HSCT is regulated by killer-cell Ig-like receptors (KIRs). To investigate the influence of KIRs on outcome after unrelated HSCT, we retrospectively analyzed the HLA and KIR genotypes of 116 donor-recipient pairs. We found that missing KIR ligands in recipients were significantly associated with a decreased leukemic relapse risk (P=0.019, HR=0.329), mainly in myeloid disease (P=0.003, HR=0.193). This beneficial effect was seen in AML/myelodysplastic syndrome and also in chronic myeloid leukemia. In myeloid disease, missing KIR ligands also improved 5-year OS (P=0.034, HR=0.430) and disease-free survival (DFS) (P=0.024, HR=0.445). Meanwhile, the presence of donor-activating KIR2DS3 gene was associated with increased relapse risk (P=0.003, HR=5.046), decreased OS (P=0.004, HR=3.181) and DFS (P=0.003, HR=2.919) in myeloid disease. No effect was seen in patients with lymphoid disease. Our study indicated that, in unrelated HSCT for myeloid leukemia, missing KIR ligands in recipients offered a lower relapse risk and a long-term survival advantage. The presence of KIR2DS3 in the donor was an important risk factor for myeloid leukemia.
...
PMID:The beneficial impact of missing KIR ligands and absence of donor KIR2DS3 gene on outcome following unrelated hematopoietic SCT for myeloid leukemia in the Chinese population. 2017 84

Adenoviruses (AdV) have emerged as important causes of morbidity and mortality in patients after hematopoietic SCT (HSCT). Early diagnosis of the infection by detection of viral DNA may improve the prognosis. A surveillance strategy was evaluated for detection of AdV DNA by PCR in a prospective study of unselected allogeneic HSCT recipients. In parallel with a routine CMV surveillance program, plasma from 20 children and 77 adults was analyzed by quantitative PCR for detection of AdV DNA. In addition, in 12 unselected patients, the presence of AdV-specific T cells were analyzed by enzyme-linked immunosorbent spot (ELISPOT) at 1 to 3 months after transplantation. A total of 5 of 97 (5%) patients had detectable AdV DNA in peripheral blood. Only one patient had high titers and none developed AdV disease. BM as a source of stem cells and myelodysplastic syndrome as the indication for transplantation were independently associated with higher risk of acquiring AdV infection. AdV-specific T cells were detected in 7 (58%) of 12 patients. Although AdV DNA was found in peripheral blood by quantitative PCR in 5% of patients undergoing allogeneic HSCT, the present surveillance program did not have a significant effect on the clinical outcome.
...
PMID:Evaluation of a surveillance strategy for early detection of adenovirus by PCR of peripheral blood in hematopoietic SCT recipients: incidence and outcome. 2121 90

Allo-SCT is the only potentially curative regimen for myelodysplastic syndromes (MDSs), but it is associated with a high relapse risk. The role of chimerism analysis for prediction of relapse is yet to be determined. To assess the clinical usefulness of mixed chimerism (MC) for predicting hematological relapse, 75 consecutively transplanted patients with MDS were analyzed with regard to lineage-specific chimerism, encompassing CD33(+) cells in peripheral blood (PB, n=49) and CD34(+) cells in BM (n= 35). A cutoff of 5% recipient cells was used to discriminate complete donor chimerism from MC. A total of 19 patients (25%) experienced hematological relapse after a median of 5 (1-31) months. Sensitivity for detection of relapse was 59% for CD33(+) PB cells and 92% for CD34(+) BM cells with corresponding specificities of 91% and 65%. CD34(+) BM cells were analyzed before relapse in seven patients, five of whom showed MC at a median of 2.5 (0.5-7) months before relapse. In contrast, 8 of 18 patients showed MC involving CD33 PB with a median of one month (0.5-2) before relapse. Here, we provide a model for early detection of relapse after SCT in MDS, in which serial characterization of both CD33(+) PB cells and CD34(+) BM cells gives an opportunity for early treatment before overt relapse.
...
PMID:Early detection of relapse in patients with myelodysplastic syndrome after allo-SCT. 2069 67


<< Previous 1 2 3 4 5 6 7 8 9 10 Next >>

---