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CONSERVTM – 2 (Clinical Outcomes and Safety Trial to Investigate Ecallantide’s Effect on Reducing Surgical Blood Loss Volume) – A Phase 2 Randomized Double-Blind Active-Controlled Study in Subjects Exposed to Cardio-pulmonary Bypass During Cardiac Surgery at High Risk of Bleeding - CONSERV-2

CONSERVTM – 2 (Clinical Outcomes and Safety Trial to Investigate Ecallantide’s Effect on Reducing Surgical Blood Loss Volume) – A Phase 2 Randomized Double-Blind Active-Controlled Study in Subjects Exposed to Cardio-pulmonary Bypass During Cardiac Surgery at High Risk of Bleeding - CONSERV-2

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2008-008354-23-PL
Enrollment
300
Registered
2009-03-09
Start date
2009-04-30
Completion date
Unknown
Last updated
2012-03-19

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Reduction of blood loss in subjects exposed to CPB during cardiac surgery at high risk for bleeding

Interventions

Product Name: Ecallantide Pharmaceutical Form: Solution for injection INN or Proposed INN: Ecallantide Concentration unit: mg/ml milligram(s)/millilitre Concentration type: equal Concentration number:

Sponsors

Cubist Pharmaceuticals,INC
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Written informed consent (by study subject) prior to any study-related procedure not part of normal medical care; 2. Male or female between the ages of 18 and 85 years old, inclusive; and 3. Planned cardiac surgery using cardio-pulmonary bypass, for one of the following procedures; • Any repeat sternotomy • surgery to repair or replace more than one valve • Combined CABG plus repair or replacement of at least one valve 4. If female, subject is non-lactating, and is either: • Not of childbearing potential, defined as postmenopausal for at least one year or surgically sterile due to bilateral tubal ligation, bilateral oophorectomy, or historectomy; • Of childbearing potential but is not pregnant as confirmed by negative pregnancy test at time of screening (based on the ß-subunit of HCG), and is practicing the barrier method of birth control along with one of the following methods: oral or parenteral contraceptives for three months prior to study drug administration, a vasectomized partner, or abstinence from sexual intercourse. Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range

Exclusion criteria

Exclusion criteria: 1. Planned primary CABG, single valve repair or replacement surgery, or any off pump procedure; 2. Body weight 2.0 mg/dL within 48 hours prior to surgery; 14. Serum hepatic enzymes (aspartate aminotransferase or alanine aminotransferase) above 2.5 times the upper limit of normal for the applicable laboratory; 15. Hematocrit 1.5 X normal range unless subject received heparin within 24 hours of test; 20. Serious intercurrent illness or active infection (e.g. endocarditis, sepsis, active malignancy requiring treatment); 21. Any previous exposure to ecallantide; 22. Receipt of an investigational drug or device 30 days prior to participation in the current study; 23. Any other condition that, in the opinion of the investigator, may compromise the safety or compliance of the subject or would preclude the subject from successful completion of the study; 24. Inability to comply with the protocol for the duration of the study; 25. Known allergy to any agent expected to be used in the intra-operative or post-operative periods; and 26. Administration of: a. Eptifibatide within 6 hours prior to surgery b. Tirofiban hydrochloride within 6 hours prior to surgery c. *Enoxaparin sodium or other low-molecular-weight heparin <24 hours prior to surgery d. Prasugrel within 10 days prior to surgery e. Clopidogrel within 3 days prior to surgery f. Ticlopidine within 7 days prior to surgery g. Abciximab within 5 days prior to surgery h. *Bivalirudin, argatroban or lepirudin within 6 hours prior to surgery i. *Fondaparinux within 72 hours prior to surgery j. Chlorpromazine within 7 days prior to surgery *Prophylactic use permitted for the prevention of deep vein thrombosis. 27. Planned use of heparin bonded bypass circuits; 28. Known allergy or hypersensitivity to tranexamic acid or any of the other ingredients; 29. Disturbance of color sense; 30. Evidence of hematuria or any acute thromboses or thromboembolic diseases such as deep vein thrombosis, pulmonary embolism, or vertebral vein thrombosis.

Design outcomes

Primary

MeasureTime frame
Main Objective: The primary objective is to evaluate the relative efficacy of ecallantide and tranexamic acid in the reduction of blood loss in subjects undergoing cardiac surgery including the use of CPB, associated with a high risk of bleeding.;Secondary Objective: • To assess the safety of ecallantide in subjects undergoing cardiac surgery including the use of CPB, associated with a high risk of bleeding; • To explore clinical outcomes that may correlate with blood loss in subjects undergoing cardiac surgery including the use of CPB, associated with a high risk of bleeding. ;Primary end point(s): The key variables of interest include the following: • Volume of packed red blood cells administered from the start of surgery up to 12 hours after the end of surgery; • Volume of packed red blood cells administered at each of the following timepoints: during surgery, within 24 hours after the end of surgery and at discharge; • Volume of blood products (platelets and FFP) and related products (albumin) administered during surgery and within 12 and 24 hours after the end of surgery and at discharge; • Administration of blood or blood products at each of the following timepoints; during surgery, within 12 hours after the end of surgery, within 24 hours after the end of surgery and at discharge; • Cumulative volume of chest tube drainage from insertion until 12 and until 24 hours after the end of surgery; • Change in serum creatinine over the duration of the study; and • MI (adjudicated)

Countries

Germany, Poland

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026