Active clinical trials for "Thrombocytosis"

This study is hypothesis-generating to explore the impact of JAK2 (V617F) mutation status on the treatment response to anagrelide hydrochloride

Myeloproliferative disorders occur in families, thus giving rise to the theory that it is a genetic disease that may be caused by an abnormal gene in the DNA that can be passed from one generation of family members to another. DNA can be gathered from family members through blood samples and the investigators will investigate (through DNA testing) to see if there are abnormal genes that may be responsible for causing the MPDs. Understanding which genes are responsible for causing MPDs can help develop ways to identify people who may be at risk for developing an MPD, allow for the development of better treatments, possibly a cure, or even prevent the development of MPDs.

This is a clinical study to evaluate the effect of CMPN (Chronic myeloproliferative neoplasm) to the bone. The hypothesis is that patients with CMPN have a higher fracture-rate compared to the background population. We expect to find a lower BMD using conventional DXA scan (dual energy x-ray absorptiometry), and a change in other parameters using HR-pQCT (high-resolution peripheral quantitative computerized tomography).Biochemical bone markers is measured to support the hypothesis.

This study involves observing the level of cell cycle regulatory gene in patients with myeloproliferative disorders(MPD). These disorders include polycythemia vera (PV), essential thrombocythemia (ET), myelofibrosis (MF) and chronic myeloid leukemia (CML). The abnormal blood and/or bone marrow cells, or materials derived from these abnormal cells, like DNA, RNA, protein or plasma will be used in laboratory studies. Cell cycle regulatory protein such as cyclins, cyclin-dependent kinases(Cdks) and Cdk inhibitors(CKIs) play indispensable roles in processes such as transcription, metabolism and stem cell self-renewal. MPD are a group of diseases characterized by abnormally increased proliferation of erythroid, megakaryocytic, or granulocytic cells. The pathogenesis was still unclear. Detecting the level of cell cycle regulatory protein will be useful to look for the possible role in MPD and better understand the cause of MPD.

The purpose of this Cohort Treatment Plan is to allow access to ruxolitinib for eligible patients diagnosed with PMF, PPV MF or PET MF. The patient's Treating Physician should follow the suggested treatment guidelines and comply with all local health authority regulations. The requesting Treating Physician submitted a request for access to drug (often referred to as Compassionate Use) to Novartis which was reviewed and approved by the medical team experienced with the drug and indication.

There is a paucity of data on the aetiology of myeloproliferative neoplasms (MPNs). The investigators conducted a systematic review of the literature which identified several cohort and case-control studies that have investigated a wide range of potential medical, environmental and occupational risk factors. However, these studies have been limited by a wide variation in case definition and small sample sizes limiting the potential to detect modest risk differences between cases and controls. The research group propose an exploratory case-control study of 100 patients with classic MPNs and 200 controls to determine the optimal methods for roll out of this study to a multi-centred UK-based case-control study that will investigate the aetiology of MPN subtypes. The objectives of the study are to evaluate recruitment procedures, response rates, the development of a telephone administered questionnaire, compare occupational exposure assessment using OccIDEAS, a novel web based program, with a job-exposure matrix (FINJEM), evaluate the feasibility of collection of DNA from saliva compared to blood samples, identify potential aetiologic factors associated with MPNs and explore assessment of quality of life. The findings of this exploratory study will form the basis of a protocol for a large United Kingdom (UK)-wide case-control study of MPNs.

Reactive or secondary thrombocytosis is defined as abnormally high platelet count (≥4,50,000 platelets per micro-liter) in the absence of chronic myeloproliferative disease. In critically ill patients reactive thrombocytosis is not uncommon during recovery phase and an association has been seen with poor outcome and increased risk of subsequent VTE. However, not all patients with infection respond with thrombocytosis. No study has enumerated the risk factors or predictors of reactive thrombocytosis in critically ill septic patients.