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Hematopoietic Cell Transplantation for Older Patients with MDS.

ABSTRACT: The incidence of myeloid malignancies, including myelodysplastic syndromes (MDS) increases with age. While several therapeutic modalities have been developed, for most of these patients the only treatment with curative potential is allogeneic hematopoietic cell transplantation (HCT). The development of reduced/low intensity transplant conditioning regimens allows to successfully transplant patients in their '60s and even '70s, although comorbidities may determine who does come to transplantation and who does not. Also, as many as half of the patients will develop graft versus host disease (GVHD), even with HLA matched donors, requiring therapy for extended periods of time, and GVHD and treatment with glucocorticoids is likely to impact the quality of life. Nevertheless, dependent upon disease stage at HCT, the presence of comorbidities and the regimen used, 30% to 50% of patients 60 years of age or older, may survive long-term cured of their disease. Future studies should focus on the incorporation of non-transplant modalities into the overall transplant approach, the prevention of GVHD, and the utilization of immunotherapy to reduce the incidence of relapse and GVHD and further improve overall transplant success.

SUBMITTER: Shadman M

PROVIDER: S-EPMC4165501 | biostudies-other | 2014

REPOSITORIES: biostudies-other

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Project description:Allogeneic hematopoietic stem cell transplantation (HCT) is the only curative treatment for myelodysplastic syndrome (MDS). The proportion of MDS patients referred for transplantation evaluation, those undergoing transplantation, and the reasons for not undergoing transplantation are unknown. In this retrospective analysis, predefined HCT eligibility and indications criteria were applied to 362 unselected patients with newly diagnosed MDS seen by leukemia faculty between 2008 and 2015 at Memorial Sloan Kettering Cancer Center. Two hundred ninety-four patients (81%) were deemed eligible for transplantation and among these, transplantation was considered indicated in 244 (83%). Of these, 158 of 244 (65%) were referred for transplantation evaluation at a median of 3.9 months from diagnosis. Overall 120 of 362 (33%) underwent transplantation at a median of 7.7 months from diagnosis. Metastatic solid-organ malignancy was the major reason for transplantation ineligibility (54%), and death due to MDS, which occurred in 41% of candidates who did not undergo transplantation, was the major reason for not undergoing transplantation. Factors associated with a lower likelihood of referral for transplantation evaluation included age ≥65 (P < .001), ≥2 comorbidities (P = .008), intermediate-1/low risk MDS (P < .001), <5% blasts at diagnosis (overall P < .001), having Medicare/Medicaid health insurance (P < .001), not being married (P = .017), and diagnosis between 2008 and 2011 (P = .035). On multivariate analysis adjusting for all of the previous factors, diagnosis between 2008 and 2011 (P < .001), age ≥65 (P = .001), and <5% blasts at diagnosis (overall P = .031) were associated with a lower likelihood of referral for transplantation evaluation. Factors associated with a lower likelihood of undergoing transplantation included age ≥65 (P < .001), ≥2 comorbidities (P = .003), intermediate-1/low risk MDS (P < .001), <5% blasts (overall P < .001), very low/low/intermediate risk International Prognostic Scoring System-revised karyotype (P = .018), and having Medicare/Medicaid health insurance (P < .001). In multivariate analysis adjusting for all of the previous factors, age ≥65 (P = .021), presence of ≥2 comorbidities (P = .018), and <5% blasts (overall P = .011) were associated with a lower likelihood of undergoing transplantation. The results highlight that transplantation for MDS remains underutilized, particularly for candidates over the age of 65.

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Hematopoietic Cell Transplantation for Older Patients with MDS.

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