View clinical trials related to Thrombocytosis.
Filter by:The purpose of the study is to evaluate efficacy and safety of argatroban in the patients with heparin-induced thrombocytopenia (HIT)/ HIT and thrombosis syndrome (HITTS). This multi-center trial covers mainly the patients with cardiovascular diseases. Subjects are included in the trial when they are clinically diagnosed of HIT/HITTS. Initial dose of argatroban is 0.7μg/kg/min, which is about one-third of the approved dose in the US. The reason of the lower initial dose is that the approved dose of argatroban in Japan (for the treatment of ischemic stroke) is about 0.7μg/kg/min and safety of higher doses of the drug are not confirmed. A sub-study of pharmacokinetics is simultaneously conducted to reveal the relationship among the dose, aPTT, and blood drug concentration.
The purpose of this trial is to see if Hydroxyurea + aspirin is a better treatment than aspirin alone for Intermediate Risk Primary Thrombocythemia (PT) patients.
The purpose of this study is to evaluate the clinical efficacy of transfusions with platelets stored in platelet additive solution II compared to plasma storage.
The primary objective of this study is to compare the three study arms of lower, medium, and higher dose platelet therapy with respect to the percentage of patients experiencing at least one episode of Grade 2 or higher bleeding as determined by the Platelet Dose Trial Bleeding Scale (Grade 2 bleeding corresponds to bleeding that is moderate, but not severe enough to warrant red blood cell transfusion). There are a number of secondary endpoints related to platelet transfusions, hemostasis, and other concerns. The four most important secondary endpoints will compare the three study arms with respect to the following outcomes: 1) platelet utilization rates (total number of platelets transfused x 10 ^11); 2) number of platelet transfusion events (frequency of transfusions); a transfusion event would be defined as each separate platelet transfusion issued by the study site's transfusion service; 3) highest category of bleeding during time of study (Platelet Dose Trial Bleeding Scale Grades less than or equal to 1, 2, 3, or 4 by arm); and 4) bleeding severity based on number of days with bleeding (total days of bleeding and bleeding/thrombocytopenic day), intensity of bleeding, and number of sites with bleeding (if such a severity score has been validated and published by the time the study is completed).
The purpose of this study is to learn how blood clotting substances respond in children with septic shock, low platelet counts, and multiple organ failure (MOF) treated at different institutions. Multiple organ failure can be related to an infection producing "septic shock," in which substances released in the blood cause poor blood flow to the organs. The number of platelets circulating in your child's blood stream is also decreased (this is called "thrombocytopenia") as a result of this condition. Research has shown that certain substances in the part of the blood known as plasma (the clear liquid part of the blood not including the red blood cells but holding blood clotting factors) can cause the organs to work poorly. The investigators would like to compare these blood responses in children with this condition, receiving a variety of different treatments, for multiple organ failure in other medical centers around the world. The investigators hope to enroll 80 patients into the study.
The purpose of this study is to determine the safety of romiplostim as a long-term treatment in thrombocytopenic subjects with ITP, to evaluate the long-term platelet response to romiplostim, and to evaluate changes in patient reported outcomes due to the use of romiplostim. Participants must have previously completed a romiplostim ITP study.
This clinical trial studies the side effects and best dose of giving fludarabine and total-body irradiation (TBI) together followed by a donor stem cell transplant and cyclosporine and mycophenolate mofetil in treating human immunodeficiency virus (HIV)-positive patients with or without cancer. Giving low doses of chemotherapy, such as fludarabine, and TBI before a donor bone marrow or peripheral blood stem cell transplant helps stop the growth of cancer or abnormal cells and helps stop the patient's immune system from rejecting the donor's stem cells. The donated stem cells may replace the patient's immune cells and help destroy any remaining cancer cells (graft-versus-tumor effect). Sometimes the transplanted cells from a donor can also make an immune response against the body's normal cells. Giving cyclosporine (CSP) and mycophenolate mofetil (MMF) after the transplant may stop this from happening.
SB497115 is an oral agent which activates the thrombopoietin receptor and increases platelet counts in healthy volunteers. This study is examining several different doses of SB497115 as a treatment for patients with chronic hepatitis C-related thrombocytopenia who are potential candidates for antiviral treatment with pegylated interferon and ribavirin. The study will be conducted in two phases, Parts 1 and 2. In Part 1, study subjects will be randomized to 4 weeks of SB-497115-GR or placebo administered daily without antiviral therapy. Subjects who successfully complete Part 1 (platelet count 70,000/µL for Pegasys and platelet count 100,000/µL for PEG-Intron) will then proceed to Part 2. In Part 2, subjects will receive an additional 8 weeks of SB-497115-GR or placebo administered daily with antiviral therapy.
This phase II trial studies how well tacrolimus and mycophenolate mofetil works in preventing graft-versus-host disease in patients who have undergone total-body irradiation (TBI) with or without fludarabine phosphate followed by donor peripheral blood stem cell transplant for hematologic cancer. Giving low doses of chemotherapy, such as fludarabine phosphate, and TBI before a donor peripheral blood stem cell transplant helps stop the growth of cancer cells. It also stops the patient's immune system from rejecting the donor's stem cells. The donated stem cells may replace the patient's immune system and help destroy any remaining cancer cells (graft-versus-tumor effect). Sometimes the transplanted cells from a donor can also make an immune response against the body's normal cells. Giving tacrolimus and mycophenolate mofetil after the transplant may stop this from happening.
This phase I/II trial is studying the side effects of biological therapy and to see how well it works in treating patients with advanced myelodysplastic syndrome, chronic myeloid leukemia, acute myeloid leukemia, or acute lymphoblastic leukemia. Biological therapies, including immunotherapy, can potentially be used to stimulate the immune system and stop cancer cells from growing. Immunotherapy given to patients who have undergone donor stem cell transplantation may be a way to eradicate remaining cancer cells