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Total 25 results found since Jan 2013.
Platelet-derived VWF is not essential for normal thrombosis and hemostasis but fosters ischemic stroke injury in mice
Von Willebrand factor (VWF) is a key hemostatic protein synthesized in both endothelial cells and megakaryocytes. Megakaryocyte-derived VWF is stored in α-granules of platelets and is enriched in hyperactive "ultra-large" VWF multimers. To elucidate the specific contribution of platelet VWF in hemostasis and thrombosis, we performed crossed bone marrow transplantations between C57BL/6J and Vwf–/– mice to generate chimeric mice. Chimeric mice specifically lacking platelet VWF showed normal tail bleeding and carotid artery thrombosis, similar to wild-type mice. Chimeric mice with VWF present only in platele...
Source: Blood - October 1, 2015 Category: Hematology Authors: Verhenne, S., Denorme, F., Libbrecht, S., Vandenbulcke, A., Pareyn, I., Deckmyn, H., Lambrecht, A., Nieswandt, B., Kleinschnitz, C., Vanhoorelbeke, K., De Meyer, S. F. Tags: Platelets and Thrombopoiesis, Thrombosis and Hemostasis Source Type: research
Outcomes in Children with Severe Vasculopathy from Sickle Cell Anemia after Treatment with Chronic Transfusion, Surgical Revascularization and/or Allogenic Hematopoetic Stem Cell Transplantation
Conclusions: The risk for cerebral infarction and/or vasculopathy progression after initiation of treatment with either chronic transfusion, HSCT or EDAS is still a major concern. Our data suggest HSCT and surgical revascularization with chronic transfusion provide the greatest benefit in reducing stroke risk and HSCT reduces risk for progression of a severe vasculopathy. Additional, large population studies are needed to clarify the risk.DisclosuresMajumdar: NIMHD: Research Funding. Campbell: Functional Fluitics: Membership on an entity's Board of Directors or advisory committees; Global Blood Therapeutics: Membership on ...
Source: Blood - November 21, 2018 Category: Hematology Authors: Johnson, C. W., Majumdar, S., Campbell, A. D., Magge, S., Darbari, D. S., Webb, J., Diab, Y. A., Nickel, R. S., Speller-Brown, B., Carpenter, J., Abraham, A. Tags: 114. Hemoglobinopathies, Excluding Thalassemia-Clinical: Poster I Source Type: research
Transcranial Doppler Screening Adherence Among Children with Sickle Cell Anemia Seen in the Emergency Department
Conclusion: Patients with SCA who present to the ED and are nonadherent to TCD screening guidelines are less likely to have had a recent hematology clinic visit. Therefore, the ED may be an important location for identifying patients lost to regular clinic follow-up in need of a TCD. An intervention that specifically targets this patient population will likely improve TCD screening rates and stroke prevention.Figure.DisclosuresNo relevant conflicts of interest to declare.
Source: Blood - November 21, 2018 Category: Hematology Authors: Weisman, J. K., Diamond, C., Kappa, S., Nickel, R. S. Tags: 903. Outcomes Research-Non-Malignant Hematology: Poster II Source Type: research
Long-term treatment follow-up of children with sickle cell disease monitored with abnormal transcranial Doppler velocities
We present the long-term follow-up of SCA children from the Créteil newborn cohort (1992-2012) detected at risk by TCD and placed on chronic transfusions. Patients with normalized velocities and no stenosis were treated with hydroxyurea, known to decrease anemia and hemolytic rate. Trimestrial Doppler was performed and transfusions restarted immediately in the case of reversion to abnormal velocities. Patients with a genoidentical donor underwent transplant. Abnormal time-averaged maximum mean velocities (TAMMV) ≥200 cm/s were detected in 92 SCA children at a mean age of 3.7 years (range, 1.3-8.3 years). No strok...
Source: Blood - April 6, 2016 Category: Hematology Authors: Bernaudin, F., Verlhac, S., Arnaud, C., Kamdem, A., Hau, I., Leveille, E., Vasile, M., Kasbi, F., Madhi, F., Fourmaux, C., Biscardi, S., Gluckman, E., Socie, G., Dalle, J.-H., Epaud, R., Pondarre, C. Tags: Pediatric Hematology, Sickle Cell Disease, Free Research Articles, Red Cells, Iron, and Erythropoiesis, Clinical Trials and Observations Source Type: research
Probability of TCD-Normalization in the "Drepagreffe" Trial Comparing Transplantation to Chronic Transfusion in Sickle Cell Anemia Children with Abnormal-Transcranial Doppler Is Associated with Lower Ang-2 and BDNF Plasma Levels
This study confirms the association between high levels of BDNF and high velocities, and suggests that transplantation increases the likelihood of TCD-normalization compared to transfusion, and is associated with reduced Ang-2 expression in plasma, which may reflect improved brain oxygenation.DisclosuresThuret: Addmedica: Research Funding; bluebird bio: Research Funding; Novartis: Research Funding. Pondarré: Addmedica: Membership on an entity's Board of Directors or advisory committees; Novartis: Honoraria; Blue Bird Bio: Honoraria. Bernaudin: AddMedica: Honoraria; Pierre fabre: Research Funding; Cordons de Vie: Res...
Source: Blood - November 21, 2018 Category: Hematology Authors: Bernaudin, M., Khelif, Y., Chadebech, P., Bodivit, G., Jouard, A., Verlhac, S., Paillard, C., Thuret, I., Guitton, C., Runel, C., Missud, F., Arnaud, C., Kamdem, A., Pondarre, C., Pirenne, F., Bernaudin, F. Tags: 114. Hemoglobinopathies, Excluding Thalassemia-Clinical: Novel or Improved Approaches To Treating Sickle Cell Disease Source Type: research
Prospective Study of Apixaban for Primary Prevention of Venous Thromboembolism in Patients with Multiple Myeloma Receiving Immunomodulatory Therapy
ConclusionsIn this pilot study of 50 patients, low-dose apixaban was safe and well tolerated as thromboprophylaxis for patients with MM receiving IMiDs. No patients experienced VTE, major hemorrhage, stroke, or MI. Further randomized studies are needed to validate apixaban as a standard primary prevention anti-thrombotic strategy for patients with MM receiving IMiDs.DisclosuresMoslehi: Bristol-Myers Squibb: Consultancy, Research Funding. Jagasia: Incyte Corporation: Membership on an entity's Board of Directors or advisory committees.
Source: Blood - November 21, 2018 Category: Hematology Authors: Cornell, R. F., Goldhaber, S. Z., Engelhardt, B. G., Moslehi, J., Jagasia, M., Patton, D., Harrell, S. L., Hall, R. L., Wyatt, H., Piazza, G. Tags: 332. Antithrombotic Therapy: Poster I Source Type: research
Efficacy and Safety of Pomalidomide in Combination with Prednisone in Patients with Myelofibrosis and Anemia -- Final Results of a Prospective Phase 2 Study
CONCLUSION:Pomalidomide with prednisone is safe therapy with good anti-anemia activity in patients with MF. It could lead to transfusion independence in one third of patients for a median duration of about 30 months. ClinicalTrials.gov Identifier: NCT00946270.Table 1.DisclosuresDaver: Alexion: Consultancy; ImmunoGen: Consultancy; Pfizer: Research Funding; Karyopharm: Research Funding; Otsuka: Consultancy; Novartis: Consultancy; ARIAD: Research Funding; Incyte: Consultancy; Pfizer: Consultancy; BMS: Research Funding; Sunesis: Research Funding; Daiichi-Sankyo: Research Funding; Sunesis: Consultancy; Kiromic: Research Funding...
Source: Blood - November 21, 2018 Category: Hematology Authors: Masarova, L., Daver, N. G., Kadia, T. M., Pemmaraju, N., Jabbour, E. J., Zhou, L., Pierce, S. A., Cortes, J. E., Kantarjian, H. M., Verstovsek, S. Tags: 634. Myeloproliferative Syndromes: Clinical: Poster I Source Type: research
Description of the First Cases with ADAMTS13 Mutations in Hungary
CONCLUSIONS:Clinical and molecular characterization of the first 5 Hungarian cases with ADAMTS13 mutations was presented. Compound heterozygous, damaging ADAMTS13 mutations with deficient plasma ADAMTS13 activity were associated with serious clinical consequences. In case of thrombotic microangiopathy in young patients with stroke, or HELLP syndrome, complete workup for ADAMTS13 activity and inhibitors is necessary, and genetic analysis should be considered. Three new ADAMTS13 mutations (c.1016_1017delCA, c.3199T>A , c.2839C>T) were identified and shown to be associated with decreased plasma ADAMTS13 activity.Disclos...
Source: Blood - November 21, 2018 Category: Hematology Authors: Reti, M., Sinkovits, G., Cseprekal, O., Csuka, D., Szilagyi, A., Farkas, Z., Klucsik, Z., Szederjesi, A., Wagner, L., Reusz, G., Kremer Hovinga, J. A., Rigo, J., Masszi, T., Prohaszka, Z. Tags: 311. Disorders of Platelet Number or Function Source Type: research
Umbilical Cord Blood Mononuclear Cells for Ex-Vivo Gene Therapy
This study was supported by the grant of Russian Science Foundation No 16-15-00010. Kazan Federal University was supported by the Russian Government Program of Competitive Growth.DisclosuresNo relevant conflicts of interest to declare.
Source: Blood - November 21, 2018 Category: Hematology Authors: Bashirov, F. V., Salafutdinov, I. I., Sokolov, M. E., Izmailov, A. A., Markosyan, V. A., Fadeev, F. O., Rizvanov, A., Islamov, R. I. Tags: 801. Gene Therapy and Transfer Source Type: research
Lower risk for serious adverse events and no increased risk for cancer after PBSC vs BM donation
In conclusion, SAEs after donation are rare but more often occurred in BM donors and women. In addition, there was no evidence of increased risk for cancer, autoimmune illness, and stroke in donors receiving granulocyte colony-stimulating factor during this period of observation.
Source: Blood - June 5, 2014 Category: Hematology Authors: Pulsipher, M. A., Chitphakdithai, P., Logan, B. R., Navarro, W. H., Levine, J. E., Miller, J. P., Shaw, B. E., O'Donnell, P. V., Majhail, N. S., Confer, D. L. Tags: Transfusion Medicine, Transplantation Source Type: research
How I treat and manage strokes in sickle cell disease
Neurologic complications are a major cause of morbidity and mortality in sickle cell disease (SCD). In children with sickle cell anemia, routine use of transcranial Doppler screening, coupled with regular blood transfusion therapy, has decreased the prevalence of overt stroke from ~11% to 1%. Limited evidence is available to guide acute and chronic management of individuals with SCD and strokes. Current management strategies are based primarily on single arm clinical trials and observational studies, coupled with principles of neurology and hematology. Initial management of a focal neurologic deficit includes evaluation by...
Source: Blood - May 28, 2015 Category: Hematology Authors: Kassim, A. A., Galadanci, N. A., Pruthi, S., DeBaun, M. R. Tags: Sickle Cell Disease, How I Treat, Free Research Articles, Red Cells, Iron, and Erythropoiesis, Clinical Trials and Observations Source Type: research
Medical Conditions Among Survivors of Adolescent and Young Adult Non-Hodgkin Lymphoma (NHL), Acute Lymphoblastic Leukemia (ALL) and Acute Myeloid Leukemia (AML)
Conclusion: This study found that sociodemographic factors were associated with the risk of developing medical conditions in AYA NHL, ALL and AML survivors. As expected, the risk of medical conditions varied by cancer type and treatment, with those undergoing SCT having a higher risk of medical conditions regardless of cancer type. NHL and ALL survivors who were uninsured or publicly insured were at a consistently higher risk of developing medical conditions, as were Hispanic ALL survivors and Black AML survivors. Our findings highlight the higher burden of medical conditions in subgroups of cancer survivors that may relat...
Source: Blood - November 21, 2018 Category: Hematology Authors: Keegan, T. H. M., Muffly, L. S., Li, Q., Alvarez, E., Brunson, A. M., Malogolowkin, M., Wun, T. Tags: 904. Outcomes Research-Malignant Conditions: Real World Outcomes Source Type: research
Safety and Efficacy of Venetoclax (VEN) in Combination with Bendamustine (B) Plus Rituximab (R) or Obinutuzumab (G) in Patients (pts) with Previously Untreated Chronic Lymphocytic Leukemia (CLL): Results from a Phase Ib Study (GO28440)
ConclusionVEN 400mg daily combined with BR or BG in 1L CLL treatment was associated with toxicity leading to treatment interruptions and discontinuations; the most frequently reported toxicities were hematologic. However, despite dose modifications, all pts responded to treatment, independently of subgroups. 50% of pts achieved a CR/CRi; higher than previously reported with BG or BR alone (Brown et al. Blood 2015; Michallet et al. Haematologica 2018). Responses were durable and preliminary PFS data are encouraging. Response rates were similar, irrespective of whether pts received planned 6 or fewer cycles of B; the optimal...
Source: Blood - November 21, 2018 Category: Hematology Authors: Stilgenbauer, S., Morschhauser, F., Wendtner, C.-M., Cartron, G., Hallek, M., Eichhorst, B., Kozloff, M. F., Giever, T., Lozanski, G., Jiang, Y., Huang, H., Pignataro, D. S., Schary, W., Humphrey, K., Mobasher, M., Salles, G. Tags: 642. CLL: Therapy, excluding Transplantation: Poster I Source Type: research
Myeloablative Conditioning with Alemtuzumab in Matched Related Donor Hematopoietic Cell Transplant for Sickle Cell Disease Prevents Graft-Versus-Host Disease without Compromising Engraftment
Conclusions:Myeloablative conditioning was well tolerated in this patient population, and the addition of alemtuzumab minimized occurrence of severe GVHD. While MDC was observed, chimerism stabilized at >50% donor cells in most patients and no graft rejection or recurrence of SCD occurred with a median follow-up of 2.9 yrs. The use of this regimen may be a promising approach to achieve low rates of GVHD while maintaining low rates of transplant related complications for patients with SCD that can tolerate myeloablative chemotherapy.DisclosuresNo relevant conflicts of interest to declare.
Source: Blood - November 21, 2018 Category: Hematology Authors: John, T. D., Yassine, K., Naik, S., Sasa, G., Omer, B., Martinez, C. A., Tewari, P., Krance, R. A., Leung, K. S. Tags: 721. Clinical Allogeneic Transplantation: Conditioning Regimens, Engraftment, and Acute Transplant Toxicities: Poster I Source Type: research
Curativestategy (GEM-CESAR) for High-Risk Smoldering Myeloma (SMM): Carfilzomib, Lenalidomide and Dexamethasone (KRd) As Induction Followed By HDT-ASCT, Consolidation with Krd and Maintenance with Rd
Conclusions: Although longer follow-up is required, this "curative strategy for high risk SMM" continues being encouraging with an acceptable toxicity profile. The study has met its primary endpoint. The depth of response improved over the treatment: 63% of patients who completed induction and ASCT achieved ≥CR with a MRD-ve rate of 55%.DisclosuresMateos: Takeda: Consultancy, Honoraria, Membership on an entity's Board of Directors or advisory committees; Abbvie: Consultancy, Membership on an entity's Board of Directors or advisory committees; Celgene: Consultancy, Honoraria, Membership on an entity's Board of Directors ...
Source: Blood - November 21, 2018 Category: Hematology Authors: Mateos, M.-V., Martinez-Lopez, J., Rodriguez Otero, P., Ocio, E. M., Gonzalez, M. S., Oriol, A., Gutierrez, N. C., Paiva, B., Rios, R., Rosinol, L., Alvarez, M. A., Calasanz, M. J., Bargay, J., Gonzalez, A. P., Alegre, A., Escalante, F., Martinez, R., Pui Tags: 731. Clinical Autologous Transplantation: Results: Poster I Source Type: research
