Pro-coagulant Markers and Anticoagulant Failure in Cancer Patients at Risk for Recurrence of Venous Thromboembolism (REMARK)
9 de maio de 2017 atualizado por: Ottawa Hospital Research Institute
Analysis of Pro-coagulant and Thrombin-generation Markers for the Prediction of Therapeutic Failure in Cancer Patients at Risk for Recurrence of Venous Thromboembolism: A Pilot Study
The presence of clots in the veins of arms and/or legs or lungs of Cancer patients decreases their quality of life, delays their treatment and may cause death.
The best way to avoid new clots is by giving blood thinners before clots are formed, but even some patients who are taking blood thinners may form blood clots.
A major problem is that it is difficult to know which patients form clots while they are receiving blood thinners, a situation called treatment failure.
Several studies have shown that by doing blood tests that measure the formation of clots, the investigators could know if the patient is responding to the blood thinners.
If this is proven, the investigators will be able to apply these tests to all patients.
Visão geral do estudo
Status
Concluído
Descrição detalhada
Therapeutic failure in cancer patients at high risk for recurrence of Venous thromboembolism (VTE) may be as high as 20% and the risk of death from a recurrent episode of pulmonary embolism is at least 8%.
Studies that have used pro-coagulant and thrombin generation markers support the notion that cancer is associated with a hypercoagulability state and that intensified doses of anticoagulation may be necessary to suppress this state.
Thus, it may be possible that by using these tests, we would identify the patients that do not respond to standard doses of anticoagulation.
To date, only few small studies have evaluated the use of pro-coagulant markers in cancer patients but this data is promising.
Our study will measure pro-coagulant markers in cancer patients at risk for VTE recurrence to determine if there is a relationship between the changes in the levels of pro-coagulant markers and VTE recurrence while taking anticoagulation with low-molecular weight-heparin (LMWH).
The evaluation of the pro-coagulant markers may enable new treatment strategies in cancer patients who fail their initial treatment.
Patients will be stratified by a risk model developed by our group and will be validate with this study.
This new approach has the potential to improve the recovery of patients, to reduce death and disability due to clots in the veins of legs or arms and/or lungs.
Tipo de estudo
Observacional
Inscrição (Antecipado)
700
Contactos e Locais
Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.
Locais de estudo
-
-
Nova Scotia
-
Halifax, Nova Scotia, Canadá
- Capital Health District Authority
-
-
Ontario
-
Hamilton, Ontario, Canadá, L8L 0A6
- Hamilton Health Sciences
-
London, Ontario, Canadá, N6A 5W9
- London Health Science Centre
-
Ottawa, Ontario, Canadá, K1H 8L6
- The Ottawa Hospital
-
-
Quebec
-
Montreal, Quebec, Canadá
- CHUM-Notre-Dame Hospital
-
-
Critérios de participação
Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.
Critérios de elegibilidade
Idades elegíveis para estudo
18 anos e mais velhos (Adulto, Adulto mais velho)
Aceita Voluntários Saudáveis
Não
Gêneros Elegíveis para o Estudo
Tudo
Método de amostragem
Amostra Não Probabilística
População do estudo
Referrals of cancer patients to the Thrombosis clinic at each participating center at the time that an acute episode of VTE has been confirmed ( within 0 +/- 1 day) from the start of anticoagulation treatment.
Our centers provide VTE treatment for all the cancer patients in our regions given the design of the Ontario Cancer Program, ensuring a generalizable patient population.
Descrição
Inclusion Criteria:
- Patients with any type of cancer (except basal cell and squamous cell carcinoma of the skin) and at any stage of the disease or treatment
- Confirmed newly diagnosed acute symptomatic VTE (proximal DVT, PE, Arm DVT, Multiple SSPE only)
- Planned treatment of VTE with low-molecular weight heparin (LMWH)
- Age 18 years old or older.
Exclusion Criteria:
- Planned cell transplant
- Patient receiving anticoagulation due to other clinical indications
- Patient who has received more than one therapeutic dose of LMWH
- Unable or unwilling to provide written, informed consent.
Plano de estudo
Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.
Como o estudo é projetado?
Detalhes do projeto
Coortes e Intervenções
Grupo / Coorte |
|---|
|
Cancer patients
All cancer patients with a diagnosed acute symptomatic VTE episode.
|
O que o estudo está medindo?
Medidas de resultados primários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
|
Relative changes on biochemical markers
Prazo: at initiation of anticoagulation (baseline); at 7-14 days; 21-35 days; 37- 44 days; 83-97 days; and 173-187 days after initiation of anticoagulation.
|
The following pro-coagulant and thrombin-generation markers will be measured:
For each patient, we will calculate baseline values and the relative changes (delta) of procoagulant and thrombin generation markers. The relative changes (delta) will be defined by the percentage of change in the marker at each visit relative to baseline measurement. |
at initiation of anticoagulation (baseline); at 7-14 days; 21-35 days; 37- 44 days; 83-97 days; and 173-187 days after initiation of anticoagulation.
|
Medidas de resultados secundários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
|
Rates of treatment failure
Prazo: 6 months
|
This outcome will be measured by the proportion of cancer patients who might develop recurrent VTE while on 6-month treatment with anticoagulation within the time-frame of the study.
|
6 months
|
|
Correlation between treatment failure and markers
Prazo: 6 months after treatment failure
|
This outcome will be assessed by determining the best cutoff for each marker that would correctly classify success or failure to anticoagulation treatment
|
6 months after treatment failure
|
|
Compliance to anticoagulation treatment
Prazo: 6 months
|
Compliance to medication will be measured by review of the patient medication diary.
|
6 months
|
Colaboradores e Investigadores
É aqui que você encontrará pessoas e organizações envolvidas com este estudo.
Patrocinador
Colaboradores
Investigadores
- Investigador principal: Philip S Wells, MD, Ottawa Hospital Research Institute
Publicações e links úteis
A pessoa responsável por inserir informações sobre o estudo fornece voluntariamente essas publicações. Estes podem ser sobre qualquer coisa relacionada ao estudo.
Publicações Gerais
- Noble S, Pasi J. Epidemiology and pathophysiology of cancer-associated thrombosis. Br J Cancer. 2010 Apr 13;102 Suppl 1(Suppl 1):S2-9. doi: 10.1038/sj.bjc.6605599.
- Lee AY, Levine MN, Baker RI, Bowden C, Kakkar AK, Prins M, Rickles FR, Julian JA, Haley S, Kovacs MJ, Gent M; Randomized Comparison of Low-Molecular-Weight Heparin versus Oral Anticoagulant Therapy for the Prevention of Recurrent Venous Thromboembolism in Patients with Cancer (CLOT) Investigators. Low-molecular-weight heparin versus a coumarin for the prevention of recurrent venous thromboembolism in patients with cancer. N Engl J Med. 2003 Jul 10;349(2):146-53. doi: 10.1056/NEJMoa025313.
- Blom JW, Vanderschoot JP, Oostindier MJ, Osanto S, van der Meer FJ, Rosendaal FR. Incidence of venous thrombosis in a large cohort of 66,329 cancer patients: results of a record linkage study. J Thromb Haemost. 2006 Mar;4(3):529-35. doi: 10.1111/j.1538-7836.2006.01804.x.
- Prandoni P, Lensing AW, Piccioli A, Bernardi E, Simioni P, Girolami B, Marchiori A, Sabbion P, Prins MH, Noventa F, Girolami A. Recurrent venous thromboembolism and bleeding complications during anticoagulant treatment in patients with cancer and venous thrombosis. Blood. 2002 Nov 15;100(10):3484-8. doi: 10.1182/blood-2002-01-0108. Epub 2002 Jul 12.
- Coleman R, MacCallum P. Treatment and secondary prevention of venous thromboembolism in cancer. Br J Cancer. 2010 Apr 13;102 Suppl 1(Suppl 1):S17-23. doi: 10.1038/sj.bjc.6605601.
- Weitz IC, Israel VK, Waisman JR, Presant CA, Rochanda L, Liebman HA. Chemotherapy-induced activation of hemostasis: effect of a low molecular weight heparin (dalteparin sodium) on plasma markers of hemostatic activation. Thromb Haemost. 2002 Aug;88(2):213-20.
- Traby L, Kaider A, Schmid R, Kranz A, Quehenberger P, Kyrle PA, Eichinger S. The effects of low-molecular-weight heparin at two different dosages on thrombin generation in cancer patients. A randomised controlled trial. Thromb Haemost. 2010 Jul;104(1):92-9. doi: 10.1160/TH09-12-0863. Epub 2010 May 10.
- Kirwan CC, McDowell G, McCollum CN, Kumar S, Byrne GJ. Early changes in the haemostatic and procoagulant systems after chemotherapy for breast cancer. Br J Cancer. 2008 Oct 7;99(7):1000-6. doi: 10.1038/sj.bjc.6604620. Epub 2008 Sep 2.
- Louzada ML, Carrier M, Lazo-Langner A, Dao V, Kovacs MJ, Ramsay TO, Rodger MA, Zhang J, Lee AY, Meyer G, Wells PS. Development of a clinical prediction rule for risk stratification of recurrent venous thromboembolism in patients with cancer-associated venous thromboembolism. Circulation. 2012 Jul 24;126(4):448-54. doi: 10.1161/CIRCULATIONAHA.111.051920. Epub 2012 Jun 7.
Datas de registro do estudo
Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.
Datas Principais do Estudo
Início do estudo
1 de julho de 2012
Conclusão Primária (Real)
1 de outubro de 2016
Conclusão do estudo (Real)
1 de outubro de 2016
Datas de inscrição no estudo
Enviado pela primeira vez
16 de maio de 2012
Enviado pela primeira vez que atendeu aos critérios de CQ
17 de maio de 2012
Primeira postagem (Estimativa)
21 de maio de 2012
Atualizações de registro de estudo
Última Atualização Postada (Real)
11 de maio de 2017
Última atualização enviada que atendeu aos critérios de controle de qualidade
9 de maio de 2017
Última verificação
1 de maio de 2017
Mais Informações
Termos relacionados a este estudo
Palavras-chave
Termos MeSH relevantes adicionais
Outros números de identificação do estudo
- HSFO-000524
- 20120208-01H (Outro identificador: Ottawa Hospital Research Ethics Board)
Plano para dados de participantes individuais (IPD)
Planeja compartilhar dados de participantes individuais (IPD)?
INDECISO
Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .