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sitaxsentan

Phase 2

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

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedPLACEBO_CONTROLLED
Total Trials1
Total Enrollment29
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT00838383Confirming The Sitaxsentan Dose In Patients Undergoing Heart SurgeryPHASE2 COMPLETED 29Aug 10, 2006Mar 31, 2008Sep 8, 20223 United States
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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 — 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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