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DVT Prophylaxis in Orthopaedic Oncology Patients - A Safety Study
This study is currently recruiting participants.
Verified by M.D. Anderson Cancer Center, September 2008
Sponsors and Collaborators: M.D. Anderson Cancer Center
Pfizer
Information provided by: M.D. Anderson Cancer Center
ClinicalTrials.gov Identifier: NCT00525057
  Purpose

The primary endpoint of the study would be to determine the safety of dalteparin as prophylaxis against deep venous thrombosis (DVT) in orthopaedic oncology patients. Specifically, the goal of the study is to determine whether there are significantly increased bleeding complications at the surgical site after major oncologic operations in the lower extremity. The study would help establish specific parameters for use of dalteparin in complex orthopaedic oncology patients. Not all patients would be appropriate for this medication, particularly those with massive hemorrhage during surgery and those with underlying coagulopathies. It is likely that patients requiring limited tumor excision, particularly those with metastatic carcinoma, would be ideal candidates for dalteparin therapy. Patients who require radical resections of tumor may need stricter guidelines for the safe use of the medication, since the potential for post-operative bleeding may be greater.


Condition Intervention
Bone Cancer
Drug: Dalteparin

MedlinePlus related topics: Bone Cancer Cancer Deep Vein Thrombosis
U.S. FDA Resources
Study Type: Interventional
Study Design: Treatment, Non-Randomized, Open Label, Uncontrolled, Single Group Assignment, Safety/Efficacy Study
Official Title: DVT Prophylaxis in Orthopaedic Oncology Patients - A Safety Study

Further study details as provided by M.D. Anderson Cancer Center:

Primary Outcome Measures:
  • To learn about the risk of bleeding caused by the drug Fragmin (dalteparin) given to patients who have had surgical treatment for bone cancer. [ Time Frame: 3 Years ] [ Designated as safety issue: Yes ]

Estimated Enrollment: 70
Study Start Date: July 2006
Estimated Primary Completion Date: July 2009 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
1: Experimental
Dalteparin Group A: Metastatic disease, myeloma, lymphoma
Drug: Dalteparin
5000 units subcutaneous injection once daily
2: Experimental
Dalteparin Group B: Primary sarcoma of bone or soft tissue of the lower extremity.
Drug: Dalteparin
5000 units subcutaneous injection once daily

Detailed Description:

Dalteparin is an FDA-approved blood thinner (prevents clots by thinning the blood).

Before you can start treatment on this study, you will have what are called "screening tests." These tests will help the doctor decide if you are eligible to take part in the study. You will have a complete medical history, physical exam and a Doppler ultrasound of both legs. The Doppler ultrasound test uses sound waves to check the veins of your legs for the presence of any pre-existing deep venous thrombosis (blood clots). You will also have blood drawn for routine blood tests (about 2 tablespoons). Women who are able to have children must have negative blood or urine pregnancy test before taking part in the study.

You will be proceed with your scheduled surgery regardless of whether or not you take part in this study. During surgery, you will have TED hose and a mechanical compression stocking put on the leg that will not be having surgery. TED stands for thromboembolic disease, which means "blood clots". TED hose are special stockings that are worn on the legs to prevent blood from clotting. Mechanical compression stockings are air filled stockings that inflate and deflate intermittently.

You will then have TED hose and mechanical compression stockings applied to the leg that had surgery in the recovery room. You will be monitored by daily physical exams for any signs of deep venous thrombosis (DVT - blood clot) DVT in the veins of the legs. Within 12-24 hours following surgery to remove the bone tumor, you will begin treatment with dalteparin. You will receive an injection of dalteparin once every day by an injection given deep under the skin. The injection site will be varied each day and will be given daily until your are discharged from the hospital (about 7-10 days).

You will also have blood drawn for routine blood tests following surgery (about 2 tablespoons). A follow-up Doppler ultrasound study of the leg that had surgery will be done before discharge from the hospital.

Participants who experience any complications following surgery, including a DVT, will be immediately treated by standard of care procedures.

Your participation in this study will be over at the time of your discharge from the hospital.

This is an investigational study. Dalteparin is an FDA-approved blood thinner. Its use together with TED hose and mechanical compression stockings in this study is experimental. The TED hose and mechanical compression stockings used in the study is considered standard of care. Up to 70 patients will take part in this study. All will be enrolled at M. D. Anderson.

  Eligibility

Ages Eligible for Study:   30 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  1. Group A: Metastatic disease, myeloma, lymphoma;
  2. Group A: Pathologic fracture or impending pathologic fracture of the femur;
  3. Group A: Intramedullary rod, plating, cementation, hip arthroplasty, or knee arthroplasty.
  4. Group B: Primary sarcoma of bone or soft tissue of the lower extremity.
  5. Group B: T2 tu;mor (>5 cm buty < 20 cm);
  6. Group B: Radical resection of tumor, which may necessitate major bone or soft tissue reconstruction.

Exclusion Criteria:

  1. Presence of DVT on pre-operative screening ultrasound study
  2. Massive tumor (> 20 cm in greatest dimension)
  3. Amputation of the affected leg as treatment of tumor
  4. Estimated blood loss > 2 liters during surgery
  5. Surgical drain output > 500 cc of bloody fluid during first 8 hours
  6. I.N.R. > 1.3 pre-operatively or > 1.5 post-operatively
  7. Platelet count < 100,000 either pre-operatively or post-operatively
  8. Indwelling post-operative epidural catheter for pain control
  9. Age < 30 years
  10. History of underlying bleeding disorder, such as hemophilia
  11. History of adverse reaction to heparin such as heparin-induced thrombocytopenia
  12. Severe liver or renal insufficiency
  13. History of hypertensive or diabetic retinopathy
  14. History of gastro-intestinal bleeding within 12 months
  15. Treatment with warfarin, clopidogrel, aspirin, NSAIDs, LMWH or other anti-coagulants for conditions
  16. History of stroke
  17. Women of child bearing potential having a positive urine or serum pregnancy test (hCG) at the time of pre-operative evaluation (within 7 days of surgery)
  18. Women who are breastfeeding
  19. Hemoglobin < 8.0 g/dL
  20. Platelet count < 100,000 /L
  21. Alanine aminotransferase > 100 IU/L
  22. Aspartate aminotransferase > 100 IU/L
  23. Direct bilirubin > 0.5mg/dL
  24. Serum creatinine > 2.0 mg/dL
  25. Patients taking COX-2 inhibitors
  26. Patients who have fragmented mechanical heart valves
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT00525057

Contacts
Contact: Patrick Lin, MD 713-745-4117

Locations
United States, Texas
U.T.M.D. Anderson Cancer Center Recruiting
Houston, Texas, United States, 77030
Principal Investigator: Patrick Lin, MD            
Sponsors and Collaborators
M.D. Anderson Cancer Center
Pfizer
Investigators
Principal Investigator: Patrick Lin, MD U.T.M.D. Anderson Cancer Center
  More Information

Related Info  This link exits the ClinicalTrials.gov site

Responsible Party: U.T.M.D. Anderson Cancer Center ( Patrick Lin, MD/Associate Professor )
Study ID Numbers: 2004-0743
Study First Received: September 4, 2007
Last Updated: September 26, 2008
ClinicalTrials.gov Identifier: NCT00525057  
Health Authority: United States: Institutional Review Board

Keywords provided by M.D. Anderson Cancer Center:
Bone Cancer
Orthopaedics
DVT Prophylaxis
Dalteparin
Fragmin
Deep Venous Thrombosis

Study placed in the following topic categories:
Musculoskeletal Diseases
Bone Neoplasms
Dalteparin
Bone neoplasms
Venous Thrombosis
Bone Diseases
Thrombosis

Additional relevant MeSH terms:
Fibrin Modulating Agents
Neoplasms
Anticoagulants
Neoplasms by Site
Molecular Mechanisms of Pharmacological Action
Therapeutic Uses
Hematologic Agents
Fibrinolytic Agents
Cardiovascular Agents
Pharmacologic Actions

ClinicalTrials.gov processed this record on January 14, 2009