There are 3 clinical trials

Clinical Trials

1 Genetic Epidemiology of Venous Thromboembolism

To determine the genetic epidemiology, including genetic and environmental interactions of the multifactorial disease, venous thromboembolism (VTE).

NCT00005543 Cardiovascular Diseases Venous Thromboembolism

MeSH:Thromboembolism Venous Thromboembolism Cardiovascular Diseases

HPO:Abnormality of the cardiovascular system Thromboembolism

The high prevalence of the Factor V R506Q (Leiden) and Prothrombin 20210G --> A mutations among VTE patients suggests the hypothesis that additional genetic abnormalities of coagulation (thrombophilia) are associated with a substantial proportion of VTE cases. --- R506Q ---

Using stored DNA samples, the investigators screened for mutations within the candidate genes for Factor V R506Q (Leiden) and Prothrombin 20210G --> A using either dideoxy, bi-directional dideoxy, or restriction endonuclease fingerprinting, and performing population-based case-control and cohort studies using a previously identified 30-year VTE inception cohort. --- R506Q ---

2 Pilot Study of Post-thrombotic Syndrome & Predictors of Recurrence in Cancer Patients With Catheter-related Thrombosis

The goal of the pilot study is to determine if a multicenter prospective cohort study of cancer patients with blood clots associated with catheters is feasible. Cancer patients with catheter-related thrombosis treated with one month of anticoagulation will be evaluated for for post-thrombotic syndrome. Laboratory biomarkers will be evaluated as predictors of recurrent thrombosis.

NCT01999179 Venous Thrombosis Neoplasms Drug: Heparin, Low-Molecular-Weight, or direct oral anticoagulants

MeSH:Thrombosis Venous Thrombosis Postthrombotic Syndrome Postphlebitic Syndrome Recurrence

HPO:Deep venous thrombosis Venous thrombosis

- >18 years of age - Platelet count >50,000 - Creatinine clearance >30 ml/min - Ability to provide informed consent Exclusion Criteria: - Underlying medical condition or chemotherapy requiring long-term anticoagulation - Known underlying higher risk thrombophilias including antiphospholipid antibody syndrome, antithrombin, protein C or protein S deficiencies, or homozygosity or compound heterozygosity for prothrombin G20210A or Factor V R506Q mutations. --- G20210A --- --- R506Q ---

3 STUDY OF THE ADAMTS-13 LEVEL AS PREDICTIVE BIOMARKER FOR DEVELOPMENT OF PORTAL VEIN THROMBOSIS IN LIVER CIRRHOSIS

Patients with cirrhosis of viral etiology (HCV/HBV); Patients with cirrhosis of any other etiology (alcohol, idiopatic, autoimmune). Planned Number of cirrhotic subjects 200 patients Inclusion Criteria Subjects (18 yr old) with liver cirrhosis of any etiology, Exclusion Criteria All patients should not have hepatocellular carcinoma or other malignant tumors, they should not be treated with anticoagulant / antiplatelet agents, not affected by PVT already diagnosed and not suffering from congenital coagulation disorders (haemophilia A / B, von disease Willebrand, another congenital deficiency of coagulation factors) or severe thrombocytopenia (<30,000 Plt / μL). Subject has participated in another clinical study within 30 days prior to study enrollment or is scheduled to participate in another clinical study on cirrhosis Primary Objective To describe the prospective modification of ADAMTS-13 level and other coagulation variables (e.g. FVIII, VWF:Ag/VWF:act) in cirrhotic patients during 18 months from the enrolment and to verify their predictive role as biomarker of development of portal vein thrombosis (PVT) Secondary Objectives To describe prospectively the modification of ADAMTS-13 level as a function of the etiology of cirrhosis Statistical analysis The total duration of the study will be of 12 months. The sample size of 200 subjects will be selected as a feasible number of patients to be recruited in a period of six months. The patients will be consecutively enrolled and followed for 18 months. As a result, in a follow up period of 18 months about 20-25 cases of PVT are expected. Continuous variables will be expressed as means ± standard deviations. In addition to descriptive statistics (location parameters), univariate analysis will be performed on each parameter and development of PVT during the follow up period. In previous observational studies both 1) a reduced PV flow [prospectively] and 2) a reduction of ADAMTS-13 are significantly associated with PVT. These associations will be investigated prospectively and analyzed simultaneously by a multivariate analysis and ROC curve to establish the sensitivity and specificity of these parameters as predictors of PVT development. Analyses will be performed using available data

NCT03322696 C23.550.355 C14.907.355.830.925 C15.378.140.855.925

MeSH:Liver Cirrhosis Thrombosis Venous Thrombosis

HPO:Cirrhosis Deep venous thrombosis Hepatic fibrosis Venous thrombosis

FV Leiden R506Q and prothrombin G20210A genotyping of these polymorphisms was performed by using commercial kits based on PCR-RT-based method (from EliTechGroup S.p.A., Torino, Italy) on an automatic instrument (Model 7300, Applied Biosystem, Foster City, CA, USA). --- R506Q ---

HPO Nodes