Completed

A Phase 2, Multicenter, Randomized, Double-Blind Study to Evaluate the Safety and Efficacy of Alfimeprase for Restoring Function in Occluded Central Venous Catheters

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What is being tested

Data Collection

Who is being recruted

Over 18 Years
See all eligibility criteria
How is the trial designed

Treatment Study

Phase 2
Interventional
See protocol details

Summary

Principal SponsorARCA Biopharma, Inc.
Last updated: January 18, 2026
Sourced from a government-validated database.Claim as a partner

This trial is for patients with a central venous catheter (a vascular access device) that is not functioning properly (unable to withdraw blood). The trial compares a new blood clot dissolving agent (alfimeprase) against the currently used treatment.

Official TitleA Phase 2, Multicenter, Randomized, Double-Blind Study to Evaluate the Safety and Efficacy of Alfimeprase for Restoring Function in Occluded Central Venous Catheters 
NCT00073515
Principal SponsorARCA Biopharma, Inc.
Last updated: January 18, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details
115 patients to be enrolledTotal number of participants that the clinical trial aims to recruit.
Treatment Study
These studies test new ways to treat a disease, condition, or health issue. The goal is to see if a new drug, therapy, or approach works better or has fewer side effects than existing options.

How participants are assigned to different groups/arms
In this clinical study, participants are placed into groups randomly, like flipping a coin. This ensures that the study is fair and unbiased, making the results more reliable. By assigning participants by chance, researchers can better compare treatments without external influences.

Other Ways to Assign Participants
Non-randomized allocation: Participants are assigned based on specific factors, such as their medical condition or a doctor's decision.
None (Single-arm trial): If the study has only one group, all participants receive the same treatment, and no allocation is needed.

How treatments are given to participants
In this study, all participants receive the same treatment. This approach is often used to evaluate the effects of a single intervention without comparing it to another.

Other Ways to Assign Treatments
Parallel assignment: Participants are split into separate groups, each receiving a different treatment.
Cross-over assignment: Participants switch between treatments during the study.
Factorial assignment: Participants receive different combinations of treatments.
Sequential assignment: Participants receive treatments one after another in a specific order, possibly based on individual responses.
Other assignment: Treatment assignment does not follow a standard or predefined design.

How the interventions assigned to participants is kept confidential
Neither participants nor researchers know who is receiving which treatment. This is the most rigorous way to reduce bias, ensuring that expectations do not influence the results.

Other Ways to Mask Information
Open-label: Everyone knows which treatment is being given.
Single-blind: Participants do not know which treatment they are receiving, but researchers do.
Triple-blind: Participants, researchers, and outcome assessors do not know which treatment is given.
Quadruple-blind: Participants, researchers, outcome assessors, and care providers all do not know which treatment is given.

Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Criteria
Any sexBiological sex of participants that are eligible to enroll.
Over 18 YearsRange of ages for which participants are eligible to join.
Healthy volunteers not allowedIf individuals who are healthy and do not have the condition being studied can participate.
Criteria

Subjects must: * have a dysfunctional Central Venous Access Device (CVAD) defined as unable to withdraw 3 mL blood * have had the device in place for \> 48 hours * be clinically stable * be 18 or older * give informed consent

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.
This study has 1 location
Suspended
Cleveland Clinic FoundationCleveland, United StatesSee the location
CompletedOne Study Center
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