Dalteparin vs Unfractionated Heparin For The Prevention Of Venous Thromboembolism (VTE) In Hospitalized Acutely Ill Medical Patients

This study has been terminated.

( See Detailed Description )

Study NCT00445328 Information provided by Pfizer

First Received: March 7, 2007 Last Updated: October 5, 2009 History of Changes

Study Type:	Interventional
Study Design:	Randomized, Open Label, Parallel Assignment
Condition:	Venous Thromboembolism
Interventions:	Drug: Dalteparin (Fragmin) Drug: Unfractionated heparin

Participant Flow

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Recruitment Details

Key information relevant to the recruitment process for the overall study, such as dates of the recruitment period and locations
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Pre-Assignment Details

Significant events and approaches for the overall study following participant enrollment, but prior to group assignment
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Reporting Groups

	Description
Dalteparin	5000 IU (International Units) dalteparin in 0.2 mL (milliliters) subcutaneously once a day (Arm A)
Unfractionated Heparin	5000 IU unfractionated Heparin (UFH) in 5 mL subcutaneously 3 times a day (Arm B) for 6 to 14 days.

Participant Flow: Overall Study

	Dalteparin	Unfractionated Heparin
STARTED	42	42
Received Treatment	41^[1]	42
COMPLETED	39	36
NOT COMPLETED	3	6
Death	0	1
Adverse Event	0	3
unknown	0	2
Withdrawal by Subject	2	0
Protocol Violation	1	0

[1]	1 subject discontinued after enrollment but prior to study treatment.

Baseline Characteristics

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Reporting Groups

	Description
Dalteparin	5000 IU dalteparin in 0.2 mL subcutaneously once a day (Arm A)
Unfractionated Heparin	5000 IU unfractionated Heparin (UFH) in 5 mL subcutaneously 3 times a day (Arm B) for 6 to 14 days.

Baseline Measures

	Dalteparin	Unfractionated Heparin	Total
Number of Participants [units: participants]	41	42	83
Age [units: years] Mean ± Standard Deviation	61.7 ± 10.6	60.8 ± 10.9	61.3 ± 10.7
Gender [units: participants]
Female	18	21	39
Male	23	21	44

Outcome Measures

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1. Primary:

Confirmed Thromboembolic Events [ Day 21 ]

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Measure Type	Primary
Measure Title	Confirmed Thromboembolic Events
Measure Description	Confirmed thromboembolic events = 'present' if any following events are present/abnormal, otherwise = 'absent': Deep vein thrombosis measured by Color Doppler ultrasonography lower limbs; pulmonary embolism by chest xray, ventilation-perfusion scan, computed tomography pulmonary angiography; Sudden Death within 24 hours of venous thromboembolism symptoms.
Time Frame	Day 21
Safety Issue	Yes

Population Description

Explanation of how the number of participants for analysis was determined. Includes whether analysis was per protocol, intention to treat, or another method. Also provides relevant details such as imputation technique, as appropriate.
Intent to treat (ITT) set: all subjects who were randomized, received at least 1 dose of study drug and had undergone at least 1 test of primary efficacy assessment.

Reporting Groups

	Description
Dalteparin	5000 IU dalteparin in 0.2 mL subcutaneously once a day (Arm A)
Unfractionated Heparin	5000 IU unfractionated Heparin (UFH) in 5 mL subcutaneously 3 times a day (Arm B) for 6 to 14 days.

Measured Values

	Dalteparin	Unfractionated Heparin
Number of Participants Analyzed [units: participants]	37	35
Confirmed Thromboembolic Events [units: participants]
Present	0	0
Absent	37	35

No statistical analysis provided for Confirmed Thromboembolic Events

2. Primary:

Composite of Objectively Verified Thromboembolic Events [ Day 21 ]

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3. Secondary:

All Cause Mortality [ Day 14, Day 21 (End of Study) ]

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4. Secondary:

Stroke - Ischemic or Hemorrhagic [ Day 21 ]

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5. Secondary:

Bleeding - Major or Minor [ Day 21 ]

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6. Secondary:

Allergic Reactions (Drug-related) [ Day 21 ]

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7. Secondary:

Thrombocytopenia [ Day 21 ]

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Serious Adverse Events

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Other Adverse Events

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More Information

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Certain Agreements:

Principal Investigators are NOT employed by the organization sponsoring the study.

There IS an agreement between Principal Investigators and the Sponsor (or its agents) that restricts the PI's rights to discuss or publish trial results after the trial is completed.

The agreement is:

	The only disclosure restriction on the PI is that the sponsor can review results communications prior to public release and can embargo communications regarding trial results for a period that is less than or equal to 60 days. The sponsor cannot require changes to the communication and cannot extend the embargo.
	The only disclosure restriction on the PI is that the sponsor can review results communications prior to public release and can embargo communications regarding trial results for a period that is more than 60 days but less than or equal to 180 days. The sponsor cannot require changes to the communication and cannot extend the embargo.
	Other disclosure agreement that restricts the right of the PI to discuss or publish trial results after the trial is completed. Restriction Description: Pfizer has the right to review disclosures, requesting a delay of < 60 days. Investigator will postpone single center publications until after disclosure of pooled data (all sites), < 12 months from study completion/termination at all participating sites. Investigator may not disclose previously undisclosed confidential information other than study results.

Limitations and Caveats

Limitations of the study, such as early termination leading to small numbers of participants analyzed and technical problems with measurement leading to unreliable or uninterpretable data
Study terminated prematurely due to delay in overall study start-up and inability to meet predefined protocol recruitment milestones; sample size too small to permit meaningful statistical analyses. No statistical analyses for all but 2 endpoints.

Results Point of Contact:

Name/Title: Pfizer ClinicalTrials.gov Call Center
Organization: Pfizer, Inc.
phone: 1-800-718-1021
e-mail: ClinicalTrials.govCallCenter@pfizer.com

No publications provided

Responsible Party:	Pfizer Inc ( Director, Clinical Trial Disclosure Group )
Study ID Numbers:	A6301080
Study First Received:	March 7, 2007
Results First Received:	July 20, 2009
Last Updated:	October 5, 2009
ClinicalTrials.gov Identifier:	NCT00445328 History of Changes
Health Authority:	India: Institutional Review Board