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sitaxsentan

Phase 2

Cardiac Surgery Subjects | Small molecule | Cardiovascular |Pfizer, Inc.|Last Updated: Sep 8, 2022

Success Probability

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Market & Valuation

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Trial Design

RandomizedPLACEBO_CONTROLLED
Total Trials1
Total Enrollment29

FDA Designations

No designations recorded

Clinical trial landscape

sitaxsentan · 1 trial · 2 indications

Phase 2 1
NCT00838383Confirming The Sitaxsentan Dose In Patients Undergoing Heart SurgeryCardiac Surgery Subjects
COMPLETED29 Analytics
PHASE2COMPLETED
Confirming The Sitaxsentan Dose In Patients Undergoing Heart Surgery
Cardiac Surgery SubjectsUnlock trial analytics

Study Endpoints

Primary Endpoints

Percent Change From 0 Hour in Pulmonary Vascular Resistance (PVR) at 0.5 Hour Post-separation From Cardiopulmonary Bypass (CPB)
0 hour, 0.5 hour post-separation from CPB

PVR in participants was derived from mean pulmonary artery pressure (PAP) (millimeter of mercury \[mmHg\]), pulmonary capillary wedge pressure (PCWP \[mmHg\]) and cardiac output (CO \[litres per minute\]). It was calculated using the following formula: (\[mean PAP-PCWP\] divided by CO)\*80, where CO= stroke volume (SV)\*heart rate (HR). Post-separation from CPB was the time immediately following cross-clamp release in CPB. Percent change in PVR at 0.5 hour post-separation from CPB in participants were summarized and reported.

Percent Change From 0 Hour in Pulmonary Vascular Resistance (PVR) at 6 Hour Post-separation From Cardiopulmonary Bypass (CPB)
0 hour, 6 hour post-separation from CPB

PVR in participants was derived from mean PAP (mmHg), PCWP (mmHg) and CO (litres per minute). It was calculated using the following formula: (\[mean PAP-PCWP\] divided by CO)\*80, where CO= SV \* HR. Percent change in PVR at 6 hour in participants were summarized and reported.

Percent Change From 0 Hour in Pulmonary Vascular Resistance (PVR) at 12 Hour Post-separation From Cardiopulmonary Bypass (CPB)
0 hour, 12 hour post-separation from CPB

PVR in participants was derived from mean PAP (mmHg), PCWP (mmHg) and CO (litres per minute). It was calculated using the following formula: (\[mean PAP-PCWP\] divided by CO)\*80, where CO= SV \* HR. Percent change in PVR at 12 hour in participants were summarized and reported.

Percent Change From 0 Hour in Pulmonary Vascular Resistance (PVR) at 24 Hour Post-separation From Cardiopulmonary Bypass (CPB)
0 hour, 24 hour post-separation from CPB

PVR in participants was derived from mean PAP (mmHg), PCWP (mmHg) and CO (litres per minute). It was calculated using the following formula: (\[mean PAP-PCWP\] divided by CO)\*80, where CO= SV \* HR. Percent change in PVR at 24 hour in participants were summarized and reported.

Mortality: Number of Participants Died During Surgery and Initial Hospitalization
During surgery, initial hospitalization period (up to 29 days for 1 mg/kg group, up to 44 days for 2 mg/kg dose group, up to 19 days for placebo group)

Number of participants who died during surgery or during initial hospitalization are reported here.

Number of Participants With Myocardial Infarction, Cerebrovascular Event, Hemodynamic Collapse and Re-operation
Initial hospitalization period (up to 44 days)

Number of participants with following incidents: myocardial infarction (Q and non-Q wave); stroke or cerebrovascular event (acute ischemia, hemorrhagic stroke or infarction, or a transient ischemia attack); hemodynamic collapse (requiring ventricular assistance devices) and re-operation (participants who returned to the operating room) during the initial hospitalization were reported.

Secondary Endpoints

Number of Participants With Inotropic Requirements During the 24 Hours Postoperative Period
Immediately after cross-clamp removal up to 24 hours post-separation from CPB
Change From 0 Hour in Cardiac Output (CO) at 0.5, 6, 12, and 24 Hours Post-Separation From Cardiopulmonary Bypass (CPB)
0, 0.5, 6, 12, 24 hours post-separation from CPB
Change From 0 Hour in Central Venous Pressure (CVP) at 0.5, 6, 12, and 24 Hours Post-separation From Cardiopulmonary Bypass (CPB)
0, 0.5, 6, 12, 24 hours post-separation from CPB
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
sitaxsentan (1.0 mg/kg)EXPERIMENTAL -
sitaxsentan (2.0 mg/kg)EXPERIMENTAL -
PlaceboPLACEBO_COMPARATOR -

Interventions

NameTypeDescription
sitaxsentan (Thelin)DRUGsitaxsentan (1.0 mg/kg) will begin immediately following cross-clamp release and 12 hours post-CPB.
PlaceboDRUGPlacebo will begin immediately following cross-clamp release and 12 hours post-CPB.
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Eligibility Criteria

Age Range48 Years to 82 Years
SexALL
Healthy VolunteersNo
Study Sites3

Inclusion Criteria: * Has been identified for coronary artery bypass grafting (CABG), aortic and/or mitral valve replacement, or combined CABG and cardiac valve replacement procedures that require cardiopulmonary bypass (CPB). Exclusion Criteria: * Requires an emergent or "emergency" CABG and/or ...

Countries:United States
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Frequently asked questions about sitaxsentan

What is sitaxsentan used for?

Sitaxsentan is an investigational small molecule being studied for use in cardiac surgery subjects, specifically patients undergoing coronary artery bypass grafting (CABG) and/or cardiac valve replacement. It is in Phase 2 clinical development for this cardiovascular indication.

Who makes sitaxsentan?

Sitaxsentan is being developed by Pfizer, Inc. (NYSE: PFE). The company is conducting clinical trials to evaluate the drug's safety and efficacy in patients undergoing heart surgery.

What phase is sitaxsentan in?

Sitaxsentan is in Phase 2 clinical development. It is an investigational drug, meaning it has not been approved by regulatory authorities and is still being studied in clinical trials to determine its safety and effectiveness.

What clinical trials is sitaxsentan in?

Sitaxsentan has one completed Phase 2 clinical trial, NCT00838383, titled "Confirming The Sitaxsentan Dose In Patients Undergoing Heart Surgery." This trial enrolled 29 participants in the United States and was placebo-controlled, though not double-blind.

How does sitaxsentan work?

Sitaxsentan is a small molecule that works by targeting and blocking the endothelin receptor, specifically endothelin receptor type A. This action helps to prevent the vasoconstrictive effects of endothelin, which may be beneficial in the context of cardiac surgery.