View clinical trials related to Thrombocytosis.
Filter by:This study is being conducted to test study drug AZD1480 to see how it may work to treat myeloproliferative diseases. The main purpose of this study is to determine the safety and tolerability of AZD1480. This is the first time the drug has been given to humans and is classed as a first time in man study. Its main purpose is to establish a safe dosage of the drug and provide additional information on any potential side effects this drug may cause. The study will also assess the blood levels and action of AZD1480 in the body over a period of time and will indicate whether the drug has a therapeutic effect on myeloproliferative diseases.
This phase I trial studies the side effects and the best dose of sunitinib malate in treating human immunodeficiency virus (HIV)-positive patients with cancer receiving antiretroviral therapy. Sunitinib malate may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth and by blocking blood flow to the tumor.
The purpose of this study is to collect data on the clinical management of Argatroban in patients with suspected or confirmed heparin-induced thrombocytopenia Type II, with or without ongoing thrombosis who require parenteral antithrombotic therapy
Thrombocytopenia (platelet count < 100,000/mL) occurs in approximately 15% of women with preeclampsia. Neuraxial analgesia is contraindicated in parturients with a coagulopathy; therefore, the platelet count(PC) is routinely checked prior to the initiation of neuraxial analgesia in women with preeclampsia/eclampsia. Catheter removal is also contraindicated in the presence of a coagulopathy. Some women have an acceptable PC at the initiation of neuraxial analgesia, but may become significantly more thrombocytopenic during labor and delivery. In a study of severely preeclamptic parturients, some with HELLP (H=hemolysis of red blood cells, EL=elevated liver enzymes, LP=low platelet count) syndrome, the admission PC correlated with the PC nadir. However, the natural progression of the PC has not been studied in women with mild preeclampsia. We hypothesize that women with mild preeclampsia or severe preeclampsia without HELLP syndrome, and whose admission PC is greater than 150,000/mL, will have a stable PC during the course of labor and delivery and do not require another PC check prior to initiation of neuraxial analgesia or removal of the epidural catheter. The purpose of this study is to determine the positive predictive value of an initial PC greater than 150,000/mL for maintaining a PC greater than 80,000/mL during labor and delivery.
Thrombocytopenia (low platelet count) is common in the neonatal intensive care unit. Commonly, the decision of when to transfuse platelets is based on platelet number. Recently, Christensen et al (2006) proposed using transfusion guidelines based on platelet mass rather than platelet number. By using platelet size as a guide of when to give platelets, we may be able to decrease the amount platelet transfusions needed. This study is investigating using platelet size rather than platelet number as a guideline for transfusing platelets in infants who are hospitalized in a NICU (neonatal intensive care unit). After obtaining parental informed consent, thrombocytopenic infants will be randomized to one of two groups. 1: Transfusion based on platelet number; 2: transfusion based on a combination of platelet number and platelet mass. In each group the decision to transfuse platelets will be made using a slightly different, yet strict set of transfusion rules. The objective is to determine the feasibility, rate of bleeding complications and compliance of transfusing neonates based on platelet mass rather than platelet number. The investigators hypothesize that transfusing platelets based on platelet mass will not increase bleeding complications and will reduce the number of transfusions in thrombocytopenic neonates.
Platelet transfusions are routinely administered during neonatal ECMO, with an average of 1.3 platelet transfusions per day being administered while a patient is undergoing ECMO treatment. The cause of thrombocytopenia during ECMO largely involves platelet adherence to the oxygenator membrane. Platelet transfusions carry risks such as infections with bacteria or yeast, and development or worsening of pulmonary hypertension. It is likely that if fewer platelet transfusions can be administered during the ECMO run, the cumulative adverse effects of platelet transfusions would diminish and patient outcomes improve. In order to better understand platelet function during ECMO, the investigators plan to serially determine the circulating platelet mass, plasma platelet factor 4 concentration, megakaryocyte mass (estimated by plasma thrombopoietin concentration), and platelet function as quantified by PFA100. Any patient on ECMO will be eligible for this pilot study of 5 patients. By understanding changes in platelet function, we hope to design a future study that may modify the frequency or need for platelet transfusions during ECMO.
Although Heparin-induced thrombocytopenia (HIT) is a rare complication of heparin treatment, it results in a high rate of morbidity and mortality, the cumulative rate of thrombosis recurrence, amputation and death approaching 52 % at one month if no specific treatment is initiated. It is therefore vital to diagnose HIT as early and as reliably as possible to permit appropriate management of this rare condition. During the acute phase of HIT, clinicians and biologists can only suspect this complication with a greater or lesser degree of confidence. Clinical data are not sufficiently sensitive or specific to confirm or refute thr diagnosis of HIT.
The study consists of two phases: The first portion of the study is a Phase 1 dose escalation study to determine the maximum tolerated dose and the dose limiting toxicities of SB1518 when given as a single agent orally once daily in subjects with Chronic Idiopathic Myelofibrosis (CIMF) regardless of their JAK2 mutational status. The second portion of the study is a Phase 2 study to define the efficacy and safety profile of single agent SB1518 at the recommended dose in subjects with CIMF.
This phase I trial studies the side effects and best dose of lenalidomide when given together with alvocidib in treating patients with relapsed or refractory B-cell chronic lymphocytic leukemia or small lymphocytic lymphoma. Lenalidomide may stop the growth of leukemia or lymphoma by blocking blood flow to the cancer. Alvocidib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Giving lenalidomide together with alvocidib may kill more cancer cells.
The purpose of this study is to determine a safe dose of LY573636-sodium to be given to patients with acute myeloid leukemia and to determine any side effects that may be associated with LY573636-sodium in this patient population. Efficacy measures will also be used to assess the activity of LY573636-sodium in acute myeloid leukemia and essential thrombocythemia patients.