Delayed Cerebral Ischemia, Endothelial Dysfunction, Subarachnoid Hemorrhage, Aneurysmal, Vasospasm, Cerebral
Conditions
Keywords
Eicosanoids, Epoxyeicosatrienoic Acids
Brief summary
Soluble epoxide hydrolase (sEH) is the metabolizing enzyme of epoxyeicosatrienoic acids (EETs), which may play a role in reducing neuroinflammation and regulating cerebral blood flow after subarachnoid hemorrhage (SAH). Hypotheses: Pharmacologic inhibition of the sEH enzyme is safe and will result in increased EETs availability in the blood and cerebrospinal fluid. This study is a double-blind, placebo-controlled, phase 1b randomized trial to evaluate the safety and efficacy of GSK2256294, a novel soluble epoxide hydrolase inhibitor in patients with aneurysmal SAH.
Detailed description
Study Description: Soluble epoxide hydrolase (sEH) is the metabolizing enzyme of epoxyeicosatrienoic acids (EETs), which may play a role in reducing neuroinflammation and regulating cerebral blood flow after subarachnoid hemorrhage (SAH). Hypothesis: Pharmacologic inhibition of the sEH enzyme is safe and will result in increased EETs availability at the neurovascular unit, and a measured increase in the EET/DHET ratio in the serum and cerebrospinal fluid. This study is a double-blind, placebo-controlled, phase 1b randomized trial to evaluate the safety and of GSK2256294, an inhibitor of soluble epoxide hydrolase, in patients with aneurysmal SAH. Objectives: Primary Objective: Determine the safety of administration of GSK2256294 in patients with aneurysmal SAH. Secondary Objective: Determine the pharmacodynamic effect of administration of GSK2256294 in patients with aneurysmal SAH on reducing EETs metabolism and biomarkers of cerebrovascular inflammation and endothelial injury. Tertiary Objective: Provide preliminary estimates of clinical endpoints to inform the design of a larger trial Endpoints: Primary Endpoints: Determination of safety Secondary endpoints: 1. Study days 7 and 10 serum EET/DHET ratios 2. Study days 7 and 10 cerebrospinal fluid (CSF) EET/DHET ratios 3. Study days 7 and 10 serum EPOME/DPOME ratio 4. Neuroinflammatory and endothelial injury biomarker levels from the blood and CSF at day 7 and day 10. Tertiary, exploratory endpoints: Clinical outcomes associated with SAH including neurologic status, disposition, vital status and incidence of delayed cerebral ischemia. 20 subjects will be randomized. Patients age 18 or above with confirmed ruptured aneurysms will be approached to provide written informed consent Phase: Phase 1B Description of Sites/Facilities Enrolling Participants: The study will take place at Oregon Health & Science University Hospital, with enrollment of patients admitted to the OHSU NSICU, a part of a comprehensive stroke center certified by the American Heart Association and Joint Commission for Accreditation of Healthcare Organizations, with a catchment area including the state of Oregon, Southwest Washington and Northern California. Approximately 80-100 patients with aneurysmal SAH are admitted each year. Description of Study Intervention: Twenty patients will be equally randomized to receive once daily either 10 mg dose of GSK2256294 or placebo enterally for a duration of 10 days. Study Duration: 24 months Participant Duration: 90 days
Interventions
GSK2256294 will be administered in a single dose once daily enteral for a duration of 10 days.
Placebo will be administered in a single dose once daily enteral for a duration of 10 days.
Sponsors
Study design
Masking description
Investigational pharmacy staff will maintain the randomization list and study/drug placebo assignment. Participants, care providers, the investigators and outcomes assessors will be blinded to the grouping.
Intervention model description
Subjects will be randomized to one of the two treatment arms based on an unrestricted or fair-coin randomization procedure.
Eligibility
Inclusion criteria
1. Age \> 18 2. Head CT evidence of subarachnoid hemorrhage 3. Digital subtraction cerebral angiography or CT angiogram documenting the presence of a cerebral aneurysm.
Exclusion criteria
1. Symptom onset compatible with SAH of \> 3 days prior to admission to OHSU 2. Absence of an indwelling external ventricular drain 3. Administration of any of the following inducers/inhibitors of CYP3A4: ritonavir, indinavir, nelfinavir, saquinavir, clarithromycin, telithromycin, chloramphenicol, ketoconazole, itraconazole, nefazodone, cobicistat or enzalutamide. 4. Suspected or confirmed pregnancy 5. Preexisting severe neurologic deficit or condition 6. Chronic renal failure requiring dialysis 7. Severe terminal disease with life expectancy \<6 months 8. Unable to read or understand written or spoken English or Spanish 9. Refusal of informed consent
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Participants With Adverse Events | 90 days | Summary tables and listings will be provided for all reported adverse events, defined as adverse events that start on or after the first administration of study drug. The reported adverse event term will be assigned a standardized preferred term. Adverse events will be summarized based on the number and percentage of patients experiencing the event. In the event a patient experiences repeat episodes of the same adverse event, then the event with the highest severity grade and strongest causal relationship to study treatment will be used for purposes of incidence tabulations. All deaths will be reported in a patient listing, which will include the primary cause of death and the number of days between the date of the last dose of study drug and death. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Study Day 7 and Study Day 10 Serum and CSF EET/ Dihyroxyeicosatrienoic (DHET) Ratio, by Mass Spectroscopic Analysis (ng/mL) | 10 days | Day 7 and day 10 serum EET/DHET ratios will be measured by liquid chromatography and mass spectroscopy of collected blood samples. Day 7 and day 10 CSF EET/DHET ratios will be measured by liquid chromatography and mass spectroscopy of collected CSF samples. |
| Study Day 7 and Study Day 10 Serum Epoxyoctadecenoic Acid (EPOME) to Dihydroxyoctadec-12-enoic Acid (DPOME) Ratio, by Mass Spectroscopic Analysis (ng/mL) | 10 days | Study day 7 and study day 10 serum epoxyoctadecenoic acid (EPOME) to dihydroxyoctadec-12-enoic acid (DPOME) ratio, will be measure by mass spectroscopic analysis of collected blood samples. |
| Serum Biomarkers of Endothelial Injury From Blood Samples Obtained on Study Day 7 and Study Day 10 | 10 days | The following serum biomarkers will be obtained from collected blood samples by Luminex assay: e-selectin, p-selectin, Vascular cell adhesion marker (VCAM-1), Platelet endothelial cell adhesion marker (PECAM-1, CD31), intercellular adhesion molecule (ICAM-1). |
| CSF Biomarkers of Neuroinflammation, From Blood Samples Obtained on Study Day 7 and Study Day 10 | 10 days | The following CSF biomarker will be obtained from collected CSF samples by Luminex assay: Tumor necrosis factor alpha (TNF-α) (pg/mL), Interleukin 1β (IL-1β) (pg/mL), Interferon gamma (IFN-γ) (pg/mL), Interleukin 6 (IL-6) (pg/mL), Interleukin 8 (IL-8) (pg/mL), Monocyte chemoattractant protein 1 (MCP-1) (pg/mL) |
Other
| Measure | Time frame | Description |
|---|---|---|
| Hospital Length of Stay in Days | 90 days | The hospital length of stay will be recorded in days, at the time of hospital discharge. |
| Discharge Disposition | 90 days | The disposition from the hospital in one of the following categories: home, home with services, rehab, long term acute care facility, skilled nursing facility, hospice, death |
| Number of Participants With New Stroke on Hospital Discharge Imaging | 90 days | The last head CT or other brain imaging to detect the presence of a new area of cerebral infarction will be reviewed at the time of hospital discharge. A cerebral infarction will be defined as a one identified on hospital discharge that was not present on imaging between 24-48 hours after aneurysm occlusion, and not attributable to other causes such as surgical clipping or endovascular treatment. Hypodensities resulting from extraventricular drains or residual intraparencyhmal hematomas will not be considered new strokes. |
| Modified Rankin Scale (mRS) at Hospital Discharge and 90 Day Follow up | 90 days | The mRS score will be determined by patient or surrogate interview, at both hospital discharge and 90 day follow up. Scores will be assigned based on the following: 0 - no symptoms, 1 - no significant disability, able to carry out all usual activities despite some symptoms, 2 - slight disability. Able to look after own affairs without assistance, but unable to carry out all previous activities, 3 - moderate disability, requires some help, but able to walk unassisted, 4 - moderately severe disability, unable to attend to own bodily needs without assistance, and unable to walk unassisted, 5 - severe disability, requires constant nursing care and attention, bedridden, incontinent, 6 - deceased. |
| Extended Glasgow Outcome Scale (GOSE) Score at 90 Day Follow up | 90 days | At 90 day follow up, the GOSE will be determined by patient or surrogate telephone interview, based on a structured interview of 19 questions. The GOSE is a scale of 1-8 where 1 - deceased, 2 - vegetative state, 3 - low severe disability, 4 - upper severe disability, 5 - low moderate disability, 6 -upper moderate disability, 7 - low good recovery, 8 - upper good recovery. |
Countries
United States
Participant flow
Participants by arm
| Arm | Count |
|---|---|
| GSK2256294 10mg capsules of GSK2256294 will be administered in a single dose once daily enterally for a duration of 10 days.
GSK2256294: GSK2256294 will be administered in a single dose once daily enteral for a duration of 10 days. | 10 |
| Placebo 10mg matched placebo capsules will be administered in a single dose once daily enterally for a duration of 10 days.
Placebo: Placebo will be administered in a single dose once daily enteral for a duration of 10 days. | 9 |
| Total | 19 |
Withdrawals & dropouts
| Period | Reason | FG000 | FG001 |
|---|---|---|---|
| Overall Study | Death | 0 | 1 |
| Overall Study | Withdrawal by Subject | 0 | 1 |
Baseline characteristics
| Characteristic | Total | Placebo | GSK2256294 |
|---|---|---|---|
| Admitted Intubated | 6 Participants | 4 Participants | 2 Participants |
| Age, Continuous | 60.8 years STANDARD_DEVIATION 11.1 | 60.4 years STANDARD_DEVIATION 11.4 | 61.2 years STANDARD_DEVIATION 11.2 |
| Baseline Aanine Transaminase | 26.1 units/liter STANDARD_DEVIATION 14.2 | 24.4 units/liter STANDARD_DEVIATION 15.7 | 27.5 units/liter STANDARD_DEVIATION 13.4 |
| Baseline Aspartate Aminotransferase | 24.1 units/liter STANDARD_DEVIATION 9 | 25.5 units/liter STANDARD_DEVIATION 11.8 | 22.7 units/liter STANDARD_DEVIATION 5.7 |
| Baseline QTc Interval | 453.2 milliseconds STANDARD_DEVIATION 27 | 456.4 milliseconds STANDARD_DEVIATION 31.5 | 451.5 milliseconds STANDARD_DEVIATION 24.3 |
| Body Mass Index (BMI) | 28.2 kg/m^2 STANDARD_DEVIATION 5.6 | 27.7 kg/m^2 STANDARD_DEVIATION 4.7 | 28.8 kg/m^2 STANDARD_DEVIATION 6.6 |
| Ethnicity (NIH/OMB) Hispanic or Latino | 2 Participants | 2 Participants | 0 Participants |
| Ethnicity (NIH/OMB) Not Hispanic or Latino | 17 Participants | 7 Participants | 10 Participants |
| Ethnicity (NIH/OMB) Unknown or Not Reported | 0 Participants | 0 Participants | 0 Participants |
| Glasgow Coma Scale at Randomization | 12.1 units on a scale STANDARD_DEVIATION 3.3 | 10.7 units on a scale STANDARD_DEVIATION 3.6 | 13.3 units on a scale STANDARD_DEVIATION 2.7 |
| History of Hypertension | 15 Participants | 9 Participants | 6 Participants |
| History of Prior Brain Aneurysm | 1 Participants | 0 Participants | 1 Participants |
| History of Seizure | 0 Participants | 0 Participants | 0 Participants |
| Hunt and Hess Scale | 3.0 units on a scale STANDARD_DEVIATION 0.94 | 3.0 units on a scale STANDARD_DEVIATION 1 | 3.0 units on a scale STANDARD_DEVIATION 0.94 |
| Location of Aneurysm Anterior Cerebral Artery/Branches | 6 Participants | 2 Participants | 4 Participants |
| Location of Aneurysm Middle Cerebral/Internal Carotid Artery/Branches | 7 Participants | 4 Participants | 3 Participants |
| Location of Aneurysm Posterior Cerebral Artery/Branches | 1 Participants | 0 Participants | 1 Participants |
| Location of Aneurysm Vertebrobasilar System | 5 Participants | 3 Participants | 2 Participants |
| Modified Fisher Grade | 3.8 units on a scale STANDARD_DEVIATION 0.54 | 3.7 units on a scale STANDARD_DEVIATION 0.71 | 3.9 units on a scale STANDARD_DEVIATION 0.32 |
| Pre-Admission Anticoagulants | 2 Participants | 2 Participants | 0 Participants |
| Pre-Admission Antidiabetic Agents | 0 Participants | 0 Participants | 0 Participants |
| Pre-Admission Antihypertensives | 11 Participants | 8 Participants | 3 Participants |
| Pre-Admission Antiplatelet Agents | 4 Participants | 2 Participants | 2 Participants |
| Pre-Admission Statins | 2 Participants | 1 Participants | 1 Participants |
| Race (NIH/OMB) American Indian or Alaska Native | 0 Participants | 0 Participants | 0 Participants |
| Race (NIH/OMB) Asian | 2 Participants | 0 Participants | 2 Participants |
| Race (NIH/OMB) Black or African American | 0 Participants | 0 Participants | 0 Participants |
| Race (NIH/OMB) More than one race | 0 Participants | 0 Participants | 0 Participants |
| Race (NIH/OMB) Native Hawaiian or Other Pacific Islander | 0 Participants | 0 Participants | 0 Participants |
| Race (NIH/OMB) Unknown or Not Reported | 1 Participants | 1 Participants | 0 Participants |
| Race (NIH/OMB) White | 16 Participants | 8 Participants | 8 Participants |
| Region of Enrollment United States | 19 participants | 9 participants | 10 participants |
| Sex: Female, Male Female | 12 Participants | 6 Participants | 6 Participants |
| Sex: Female, Male Male | 7 Participants | 3 Participants | 4 Participants |
| Smoking Active Smoker | 8 Participants | 3 Participants | 5 Participants |
| Smoking Former Smoker | 4 Participants | 1 Participants | 3 Participants |
| Smoking Never/Passive Smoker | 7 Participants | 5 Participants | 2 Participants |
| Treatment of Aneursym Craniotomy | 6 Participants | 2 Participants | 4 Participants |
| Treatment of Aneursym Endovascular | 12 Participants | 6 Participants | 6 Participants |
| Treatment of Aneursym Unsecured | 1 Participants | 1 Participants | 0 Participants |
Adverse events
| Event type | EG000 affected / at risk | EG001 affected / at risk |
|---|---|---|
| deaths Total, all-cause mortality | 0 / 10 | 1 / 9 |
| other Total, other adverse events | 0 / 10 | 0 / 10 |
| serious Total, serious adverse events | 4 / 10 | 5 / 9 |
Outcome results
Participants With Adverse Events
Summary tables and listings will be provided for all reported adverse events, defined as adverse events that start on or after the first administration of study drug. The reported adverse event term will be assigned a standardized preferred term. Adverse events will be summarized based on the number and percentage of patients experiencing the event. In the event a patient experiences repeat episodes of the same adverse event, then the event with the highest severity grade and strongest causal relationship to study treatment will be used for purposes of incidence tabulations. All deaths will be reported in a patient listing, which will include the primary cause of death and the number of days between the date of the last dose of study drug and death.
Time frame: 90 days
| Arm | Measure | Group | Value (COUNT_OF_PARTICIPANTS) |
|---|---|---|---|
| GSK2256294 | Participants With Adverse Events | Venous Thromboembolism | 2 Participants |
| GSK2256294 | Participants With Adverse Events | Myocardial Infarction | 0 Participants |
| GSK2256294 | Participants With Adverse Events | Seizure | 1 Participants |
| GSK2256294 | Participants With Adverse Events | Any Documented Infection | 4 Participants |
| GSK2256294 | Participants With Adverse Events | Cerebral Salt Wasting | 3 Participants |
| GSK2256294 | Participants With Adverse Events | Leukopenia | 0 Participants |
| GSK2256294 | Participants With Adverse Events | Aneurysm Rebleed | 0 Participants |
| GSK2256294 | Participants With Adverse Events | Acute Respiratory Distress Syndrome | 0 Participants |
| GSK2256294 | Participants With Adverse Events | Death | 0 Participants |
| Placebo | Participants With Adverse Events | Aneurysm Rebleed | 1 Participants |
| Placebo | Participants With Adverse Events | Venous Thromboembolism | 0 Participants |
| Placebo | Participants With Adverse Events | Cerebral Salt Wasting | 2 Participants |
| Placebo | Participants With Adverse Events | Myocardial Infarction | 0 Participants |
| Placebo | Participants With Adverse Events | Death | 1 Participants |
| Placebo | Participants With Adverse Events | Seizure | 1 Participants |
| Placebo | Participants With Adverse Events | Acute Respiratory Distress Syndrome | 1 Participants |
| Placebo | Participants With Adverse Events | Any Documented Infection | 6 Participants |
| Placebo | Participants With Adverse Events | Leukopenia | 1 Participants |
CSF Biomarkers of Neuroinflammation, From Blood Samples Obtained on Study Day 7 and Study Day 10
The following CSF biomarker will be obtained from collected CSF samples by Luminex assay: Tumor necrosis factor alpha (TNF-α) (pg/mL), Interleukin 1β (IL-1β) (pg/mL), Interferon gamma (IFN-γ) (pg/mL), Interleukin 6 (IL-6) (pg/mL), Interleukin 8 (IL-8) (pg/mL), Monocyte chemoattractant protein 1 (MCP-1) (pg/mL)
Time frame: 10 days
Population: Missing data occurred due to no sample collection from the CSF in patients who had external ventricular drains removed as part of their standard ICU care, prior to the study visit for sample collection. Missing serum samples are the result of one patient in the placebo group who died prior to sample collection visit, and multiple unsuccessful attempts at blood collection from another patient.
| Arm | Measure | Group | Value (MEAN) | Dispersion |
|---|---|---|---|---|
| GSK2256294 | CSF Biomarkers of Neuroinflammation, From Blood Samples Obtained on Study Day 7 and Study Day 10 | CSF Day 7 IFN-gamma | 1.9 pg / mL | Standard Deviation 1 |
| GSK2256294 | CSF Biomarkers of Neuroinflammation, From Blood Samples Obtained on Study Day 7 and Study Day 10 | CSF Day 10 IFN-gamma | 1.5 pg / mL | Standard Deviation 0.84 |
| GSK2256294 | CSF Biomarkers of Neuroinflammation, From Blood Samples Obtained on Study Day 7 and Study Day 10 | CSF Day 7 IL-1b | 1.6 pg / mL | Standard Deviation 0.82 |
| GSK2256294 | CSF Biomarkers of Neuroinflammation, From Blood Samples Obtained on Study Day 7 and Study Day 10 | CSF Day 10 IL-1b | 1.0 pg / mL | Standard Deviation 0.5 |
| GSK2256294 | CSF Biomarkers of Neuroinflammation, From Blood Samples Obtained on Study Day 7 and Study Day 10 | CSF Day 7 IL-6 | 2991.2 pg / mL | Standard Deviation 3420 |
| GSK2256294 | CSF Biomarkers of Neuroinflammation, From Blood Samples Obtained on Study Day 7 and Study Day 10 | CSF Day 10 IL-6 | 2089.4 pg / mL | Standard Deviation 3248.4 |
| GSK2256294 | CSF Biomarkers of Neuroinflammation, From Blood Samples Obtained on Study Day 7 and Study Day 10 | CSF Day 7 IL-8 | 1652.4 pg / mL | Standard Deviation 1374.4 |
| GSK2256294 | CSF Biomarkers of Neuroinflammation, From Blood Samples Obtained on Study Day 7 and Study Day 10 | CSF Day 10 IL-8 | 1093.6 pg / mL | Standard Deviation 775.3 |
| GSK2256294 | CSF Biomarkers of Neuroinflammation, From Blood Samples Obtained on Study Day 7 and Study Day 10 | CSF Day 7 TNF-alpha | 7.8 pg / mL | Standard Deviation 2.6 |
| GSK2256294 | CSF Biomarkers of Neuroinflammation, From Blood Samples Obtained on Study Day 7 and Study Day 10 | CSF Day 10 TNF-alpha | 5.9 pg / mL | Standard Deviation 2.8 |
| Placebo | CSF Biomarkers of Neuroinflammation, From Blood Samples Obtained on Study Day 7 and Study Day 10 | CSF Day 10 IL-8 | 1485.8 pg / mL | Standard Deviation 1002.2 |
| Placebo | CSF Biomarkers of Neuroinflammation, From Blood Samples Obtained on Study Day 7 and Study Day 10 | CSF Day 7 IFN-gamma | 4.6 pg / mL | Standard Deviation 6.8 |
| Placebo | CSF Biomarkers of Neuroinflammation, From Blood Samples Obtained on Study Day 7 and Study Day 10 | CSF Day 10 IL-6 | 2051.6 pg / mL | Standard Deviation 3570.7 |
| Placebo | CSF Biomarkers of Neuroinflammation, From Blood Samples Obtained on Study Day 7 and Study Day 10 | CSF Day 10 IFN-gamma | 5.8 pg / mL | Standard Deviation 12.9 |
| Placebo | CSF Biomarkers of Neuroinflammation, From Blood Samples Obtained on Study Day 7 and Study Day 10 | CSF Day 10 TNF-alpha | 8.1 pg / mL | Standard Deviation 9.9 |
| Placebo | CSF Biomarkers of Neuroinflammation, From Blood Samples Obtained on Study Day 7 and Study Day 10 | CSF Day 7 IL-1b | 5.0 pg / mL | Standard Deviation 9.6 |
| Placebo | CSF Biomarkers of Neuroinflammation, From Blood Samples Obtained on Study Day 7 and Study Day 10 | CSF Day 7 IL-8 | 3971.0 pg / mL | Standard Deviation 3298.9 |
| Placebo | CSF Biomarkers of Neuroinflammation, From Blood Samples Obtained on Study Day 7 and Study Day 10 | CSF Day 10 IL-1b | 4.4 pg / mL | Standard Deviation 9.2 |
| Placebo | CSF Biomarkers of Neuroinflammation, From Blood Samples Obtained on Study Day 7 and Study Day 10 | CSF Day 7 TNF-alpha | 13.1 pg / mL | Standard Deviation 15.6 |
| Placebo | CSF Biomarkers of Neuroinflammation, From Blood Samples Obtained on Study Day 7 and Study Day 10 | CSF Day 7 IL-6 | 3417.9 pg / mL | Standard Deviation 4110.2 |
Serum Biomarkers of Endothelial Injury From Blood Samples Obtained on Study Day 7 and Study Day 10
The following serum biomarkers will be obtained from collected blood samples by Luminex assay: e-selectin, p-selectin, Vascular cell adhesion marker (VCAM-1), Platelet endothelial cell adhesion marker (PECAM-1, CD31), intercellular adhesion molecule (ICAM-1).
Time frame: 10 days
Population: Missing data occurred due to no sample collection from the CSF in patients who had external ventricular drains removed as part of their standard ICU care, prior to the study visit for sample collection. Missing serum samples are the result of one patient in the placebo group who died prior to sample collection visit, and multiple unsuccessful attempts at blood collection from another patient.
| Arm | Measure | Group | Value (MEAN) | Dispersion |
|---|---|---|---|---|
| GSK2256294 | Serum Biomarkers of Endothelial Injury From Blood Samples Obtained on Study Day 7 and Study Day 10 | Serum Day 7 ICAM | 8.4 ng/mL | Standard Deviation 7.5 |
| GSK2256294 | Serum Biomarkers of Endothelial Injury From Blood Samples Obtained on Study Day 7 and Study Day 10 | Serum Day 10 ICAM | 17.8 ng/mL | Standard Deviation 27 |
| GSK2256294 | Serum Biomarkers of Endothelial Injury From Blood Samples Obtained on Study Day 7 and Study Day 10 | Serum Day 7 VCAM | 8.3 ng/mL | Standard Deviation 3 |
| GSK2256294 | Serum Biomarkers of Endothelial Injury From Blood Samples Obtained on Study Day 7 and Study Day 10 | Serum Day 10 VCAM | 8.9 ng/mL | Standard Deviation 2.9 |
| GSK2256294 | Serum Biomarkers of Endothelial Injury From Blood Samples Obtained on Study Day 7 and Study Day 10 | Serum Day 7 PECAM-1 | 1.4 ng/mL | Standard Deviation 0.56 |
| GSK2256294 | Serum Biomarkers of Endothelial Injury From Blood Samples Obtained on Study Day 7 and Study Day 10 | Serum Day 10 PECAM-1 | 1.7 ng/mL | Standard Deviation 0.9 |
| GSK2256294 | Serum Biomarkers of Endothelial Injury From Blood Samples Obtained on Study Day 7 and Study Day 10 | Serum Day 7 E-Selectin | 46.6 ng/mL | Standard Deviation 25.3 |
| GSK2256294 | Serum Biomarkers of Endothelial Injury From Blood Samples Obtained on Study Day 7 and Study Day 10 | Serum Day 10 E-Selectin | 53.0 ng/mL | Standard Deviation 23.8 |
| GSK2256294 | Serum Biomarkers of Endothelial Injury From Blood Samples Obtained on Study Day 7 and Study Day 10 | Serum Day 7 P-Selectin | 1.4 ng/mL | Standard Deviation 0.83 |
| GSK2256294 | Serum Biomarkers of Endothelial Injury From Blood Samples Obtained on Study Day 7 and Study Day 10 | Serum Day 10 P-Selectin | 1.7 ng/mL | Standard Deviation 0.9 |
| Placebo | Serum Biomarkers of Endothelial Injury From Blood Samples Obtained on Study Day 7 and Study Day 10 | Serum Day 10 E-Selectin | 44.7 ng/mL | Standard Deviation 30.3 |
| Placebo | Serum Biomarkers of Endothelial Injury From Blood Samples Obtained on Study Day 7 and Study Day 10 | Serum Day 7 ICAM | 8.3 ng/mL | Standard Deviation 6.8 |
| Placebo | Serum Biomarkers of Endothelial Injury From Blood Samples Obtained on Study Day 7 and Study Day 10 | Serum Day 10 PECAM-1 | 1.6 ng/mL | Standard Deviation 0.65 |
| Placebo | Serum Biomarkers of Endothelial Injury From Blood Samples Obtained on Study Day 7 and Study Day 10 | Serum Day 10 ICAM | 6.7 ng/mL | Standard Deviation 6.6 |
| Placebo | Serum Biomarkers of Endothelial Injury From Blood Samples Obtained on Study Day 7 and Study Day 10 | Serum Day 10 P-Selectin | 2.0 ng/mL | Standard Deviation 2.2 |
| Placebo | Serum Biomarkers of Endothelial Injury From Blood Samples Obtained on Study Day 7 and Study Day 10 | Serum Day 7 VCAM | 7.9 ng/mL | Standard Deviation 2 |
| Placebo | Serum Biomarkers of Endothelial Injury From Blood Samples Obtained on Study Day 7 and Study Day 10 | Serum Day 7 E-Selectin | 48.0 ng/mL | Standard Deviation 33 |
| Placebo | Serum Biomarkers of Endothelial Injury From Blood Samples Obtained on Study Day 7 and Study Day 10 | Serum Day 10 VCAM | 7.9 ng/mL | Standard Deviation 2.1 |
| Placebo | Serum Biomarkers of Endothelial Injury From Blood Samples Obtained on Study Day 7 and Study Day 10 | Serum Day 7 P-Selectin | 1.1 ng/mL | Standard Deviation 0.28 |
| Placebo | Serum Biomarkers of Endothelial Injury From Blood Samples Obtained on Study Day 7 and Study Day 10 | Serum Day 7 PECAM-1 | 1.7 ng/mL | Standard Deviation 0.9 |
Study Day 7 and Study Day 10 Serum and CSF EET/ Dihyroxyeicosatrienoic (DHET) Ratio, by Mass Spectroscopic Analysis (ng/mL)
Day 7 and day 10 serum EET/DHET ratios will be measured by liquid chromatography and mass spectroscopy of collected blood samples. Day 7 and day 10 CSF EET/DHET ratios will be measured by liquid chromatography and mass spectroscopy of collected CSF samples.
Time frame: 10 days
Population: Missing data occurred due to no sample collection from the CSF in patients who had external ventricular drains removed as part of their standard ICU care, prior to the study visit for sample collection. Missing serum samples are the result of one patient in the placebo group who died prior to sample collection visit, and multiple unsuccessful attempts at blood collection from another patient.
| Arm | Measure | Group | Value (MEAN) | Dispersion |
|---|---|---|---|---|
| GSK2256294 | Study Day 7 and Study Day 10 Serum and CSF EET/ Dihyroxyeicosatrienoic (DHET) Ratio, by Mass Spectroscopic Analysis (ng/mL) | Study day 7 CSF 14,15-EET/DHET ratio | .17 ration | Standard Deviation 0.07 |
| GSK2256294 | Study Day 7 and Study Day 10 Serum and CSF EET/ Dihyroxyeicosatrienoic (DHET) Ratio, by Mass Spectroscopic Analysis (ng/mL) | Study day 10 CSF 14,15-EET/DHET ratio | .45 ration | Standard Deviation 0.78 |
| GSK2256294 | Study Day 7 and Study Day 10 Serum and CSF EET/ Dihyroxyeicosatrienoic (DHET) Ratio, by Mass Spectroscopic Analysis (ng/mL) | Study day 7 serum 14,15-EET/DHET ratio | .30 ration | Standard Deviation 0.11 |
| GSK2256294 | Study Day 7 and Study Day 10 Serum and CSF EET/ Dihyroxyeicosatrienoic (DHET) Ratio, by Mass Spectroscopic Analysis (ng/mL) | Study day 10 serum 14,15-EET/DHET ratio | .27 ration | Standard Deviation 0.07 |
| Placebo | Study Day 7 and Study Day 10 Serum and CSF EET/ Dihyroxyeicosatrienoic (DHET) Ratio, by Mass Spectroscopic Analysis (ng/mL) | Study day 10 serum 14,15-EET/DHET ratio | .12 ration | Standard Deviation 0.02 |
| Placebo | Study Day 7 and Study Day 10 Serum and CSF EET/ Dihyroxyeicosatrienoic (DHET) Ratio, by Mass Spectroscopic Analysis (ng/mL) | Study day 7 CSF 14,15-EET/DHET ratio | .19 ration | Standard Deviation 0.16 |
| Placebo | Study Day 7 and Study Day 10 Serum and CSF EET/ Dihyroxyeicosatrienoic (DHET) Ratio, by Mass Spectroscopic Analysis (ng/mL) | Study day 7 serum 14,15-EET/DHET ratio | .12 ration | Standard Deviation 0.03 |
| Placebo | Study Day 7 and Study Day 10 Serum and CSF EET/ Dihyroxyeicosatrienoic (DHET) Ratio, by Mass Spectroscopic Analysis (ng/mL) | Study day 10 CSF 14,15-EET/DHET ratio | .52 ration | Standard Deviation 1.04 |
Study Day 7 and Study Day 10 Serum Epoxyoctadecenoic Acid (EPOME) to Dihydroxyoctadec-12-enoic Acid (DPOME) Ratio, by Mass Spectroscopic Analysis (ng/mL)
Study day 7 and study day 10 serum epoxyoctadecenoic acid (EPOME) to dihydroxyoctadec-12-enoic acid (DPOME) ratio, will be measure by mass spectroscopic analysis of collected blood samples.
Time frame: 10 days
Population: Missing data occurred due to no sample collection from the CSF in patients who had external ventricular drains removed as part of their standard ICU care, prior to the study visit for sample collection. Missing serum samples are the result of one patient in the placebo group who died prior to sample collection visit, and multiple unsuccessful attempts at blood collection from another patient.
| Arm | Measure | Group | Value (MEAN) | Dispersion |
|---|---|---|---|---|
| GSK2256294 | Study Day 7 and Study Day 10 Serum Epoxyoctadecenoic Acid (EPOME) to Dihydroxyoctadec-12-enoic Acid (DPOME) Ratio, by Mass Spectroscopic Analysis (ng/mL) | Day 7 serum 12,13 EpOME/DiHOME ratio | 6.0 ration | Standard Deviation 4.3 |
| GSK2256294 | Study Day 7 and Study Day 10 Serum Epoxyoctadecenoic Acid (EPOME) to Dihydroxyoctadec-12-enoic Acid (DPOME) Ratio, by Mass Spectroscopic Analysis (ng/mL) | Day 10 serum 12,13 EpOME/DiHOME ratio | 8.7 ration | Standard Deviation 7.1 |
| Placebo | Study Day 7 and Study Day 10 Serum Epoxyoctadecenoic Acid (EPOME) to Dihydroxyoctadec-12-enoic Acid (DPOME) Ratio, by Mass Spectroscopic Analysis (ng/mL) | Day 10 serum 12,13 EpOME/DiHOME ratio | 1.7 ration | Standard Deviation 0.9 |
| Placebo | Study Day 7 and Study Day 10 Serum Epoxyoctadecenoic Acid (EPOME) to Dihydroxyoctadec-12-enoic Acid (DPOME) Ratio, by Mass Spectroscopic Analysis (ng/mL) | Day 7 serum 12,13 EpOME/DiHOME ratio | 1.8 ration | Standard Deviation 0.92 |
Discharge Disposition
The disposition from the hospital in one of the following categories: home, home with services, rehab, long term acute care facility, skilled nursing facility, hospice, death
Time frame: 90 days
| Arm | Measure | Category | Value (COUNT_OF_PARTICIPANTS) |
|---|---|---|---|
| GSK2256294 | Discharge Disposition | Discharged to home | 7 Participants |
| GSK2256294 | Discharge Disposition | Discharged to rehab, long term acute care facility, skilled nursing facility, hospice, death | 3 Participants |
| Placebo | Discharge Disposition | Discharged to home | 2 Participants |
| Placebo | Discharge Disposition | Discharged to rehab, long term acute care facility, skilled nursing facility, hospice, death | 7 Participants |
Extended Glasgow Outcome Scale (GOSE) Score at 90 Day Follow up
At 90 day follow up, the GOSE will be determined by patient or surrogate telephone interview, based on a structured interview of 19 questions. The GOSE is a scale of 1-8 where 1 - deceased, 2 - vegetative state, 3 - low severe disability, 4 - upper severe disability, 5 - low moderate disability, 6 -upper moderate disability, 7 - low good recovery, 8 - upper good recovery.
Time frame: 90 days
Population: Missing data due to one subject in the GSK2256294 lost to followup
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| GSK2256294 | Extended Glasgow Outcome Scale (GOSE) Score at 90 Day Follow up | 5.4 score on a scale | Standard Deviation 2.4 |
| Placebo | Extended Glasgow Outcome Scale (GOSE) Score at 90 Day Follow up | 4.1 score on a scale | Standard Deviation 2.4 |
Hospital Length of Stay in Days
The hospital length of stay will be recorded in days, at the time of hospital discharge.
Time frame: 90 days
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| GSK2256294 | Hospital Length of Stay in Days | 16.9 days | Standard Deviation 3.3 |
| Placebo | Hospital Length of Stay in Days | 28.8 days | Standard Deviation 19.8 |
Modified Rankin Scale (mRS) at Hospital Discharge and 90 Day Follow up
The mRS score will be determined by patient or surrogate interview, at both hospital discharge and 90 day follow up. Scores will be assigned based on the following: 0 - no symptoms, 1 - no significant disability, able to carry out all usual activities despite some symptoms, 2 - slight disability. Able to look after own affairs without assistance, but unable to carry out all previous activities, 3 - moderate disability, requires some help, but able to walk unassisted, 4 - moderately severe disability, unable to attend to own bodily needs without assistance, and unable to walk unassisted, 5 - severe disability, requires constant nursing care and attention, bedridden, incontinent, 6 - deceased.
Time frame: 90 days
Population: One subject in GSK2256294 group lost to followup
| Arm | Measure | Group | Value (MEAN) | Dispersion |
|---|---|---|---|---|
| GSK2256294 | Modified Rankin Scale (mRS) at Hospital Discharge and 90 Day Follow up | Hospital Discharge mRS | 3.4 units on a scale | Standard Deviation 1.5 |
| GSK2256294 | Modified Rankin Scale (mRS) at Hospital Discharge and 90 Day Follow up | 90 day follow-up mRS | 2.2 units on a scale | Standard Deviation 1.6 |
| Placebo | Modified Rankin Scale (mRS) at Hospital Discharge and 90 Day Follow up | Hospital Discharge mRS | 4.1 units on a scale | Standard Deviation 1.4 |
| Placebo | Modified Rankin Scale (mRS) at Hospital Discharge and 90 Day Follow up | 90 day follow-up mRS | 3.3 units on a scale | Standard Deviation 1.7 |
Number of Participants With New Stroke on Hospital Discharge Imaging
The last head CT or other brain imaging to detect the presence of a new area of cerebral infarction will be reviewed at the time of hospital discharge. A cerebral infarction will be defined as a one identified on hospital discharge that was not present on imaging between 24-48 hours after aneurysm occlusion, and not attributable to other causes such as surgical clipping or endovascular treatment. Hypodensities resulting from extraventricular drains or residual intraparencyhmal hematomas will not be considered new strokes.
Time frame: 90 days
| Arm | Measure | Value (COUNT_OF_PARTICIPANTS) |
|---|---|---|
| GSK2256294 | Number of Participants With New Stroke on Hospital Discharge Imaging | 1 Participants |
| Placebo | Number of Participants With New Stroke on Hospital Discharge Imaging | 1 Participants |