Proof of Concept (POC) in Patients With Ischaemic Stroke

Gait is the way or manner in which a person walks. Gait velocity (walking speed) is an objective, quantitative measure of lower extremity motor recovery in individuals who have had a stroke. Participants were asked to walk at their usual pace over a level, indoor 10 m distance and were allowed to use their normal assistive devices. The time (s) taken by the participants to travel the 10 m distance was recorded. Gait velocity (m/s) as assessed by study personnel was derived as: 10 divided by time to walk 10 m. Two trials of gait velocity were conducted at each time point. Change from BL was calculated as the mean Month 3/Day 90 value minus the mean BL value. BL was defined as Day 1. The measure type displayed are posterior means.

Participants were categorized at each visit into the following gait velocity categories: 0 m/s, >0 to <0.4 m/s, >=0.4 m/s to 0.8 m/s and >0.8m/s. A distinction was made between participants who are too incapacitated to walk (i.e., gait velocity = 0m/s) and participants for whom the gait velocity assessment was not performed due to another reason (i.e., truly missing data). Participants were asked to walk at their usual or normal pace and using their normal assistive devices. Two trials of gait velocity were conducted at each time point. The number of participants transitioning from one gait velocity category to another category was assessed at each post-Baseline visit and was presented in terms of the following transition categories: worsened, no change, improved 1 level, improved 2 levels and improved 3 levels. By-visit sample sizes vary due to missing data or early termination of the study, missing data was not imputed.

Dexterity is ability of person to use hands skillfully in performing a task. Box and Blocks test is an objective, gross manual dexterity test in individuals with upper limb impairments. Participants were asked to move small wooden blocks from one side of a partitioned box to other. The score was determined by number of blocks transferred within a 60 second time period. Both affected and unaffected arms were tested, starting with the unaffected arm. Change from BL was calculated as the individual post- BL value minus BL value. A higher number of displaced blocks indicated a better gross dexterity and a low number of displaced blocks indicated poor gross dexterity. It was analyzed using fixed effects for treatment, visit, treatment by visit interaction, sex, age, Baseline National Institute of Health stroke scale (NIHSS) total score, BL number of blocks transferred by the affected and unaffected arms, country and presence of concomitant medications that potentially impact recovery.

The number of participants who experienced at least one fall between BL to Day 90 and BL to Day 180 is summarized.

The number of participants who experienced 1, 2, 3 or >=4 falls between BL to Day 90 and BL to Day 180 is summarized. By-visit sample sizes vary due to missing data or early termination of the study. The participants who experienced atleast one-fall were reported

An AE is any untoward medical occurrence in a participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. A SAE is any untoward medical occurrence that, at any dose: results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect or all events of possible drug-induced liver injury with hyperbilirubinaemia. Medical or scientific judgment is exercised in other situations.

Events common to stroke were those events that commonly occurred after a stroke and are generally associated with the underlying stroke or the progression of stroke. These included joint or soft tissue pain, bladder incontinence, depression/mood disorder, urinary tract infection, dysphagia, bowel incontinence, dysarthia, confusion, spasticity, limb edema, aspiration pneumonia, hemorrhagic transformation (symptomatic or asymptomatic), pressure ulcers, progression of stroke, malnutrition, deep vein thrombosis, brain herniation, pulmonary embolism, seizures, and falls.

Safety was measured by monitoring vital signs including blood pressure. The BL for DBP and SBP was the value of pre-dose assessment on Day 1. Change from BL was calculated as the individual post-Baseline value minus the BL value. By-visit sample sizes vary due to missing data or early termination of the study.

Safety was measured by monitoring vital signs including heart rate. The BL for heart rate was the value of pre-dose assessment on Day 1. Change from BL was calculated as the individual post-BL value minus the BL value. By-visit sample sizes vary due to missing data or early termination of the study. BL was defined as Day 1.

A single 12-lead ECG was obtained at each time point that measured heart rate. BL was the value obtained on Day 1. Change from BL was calculated as the individual post-Baseline value minus the BL value. By-visit sample sizes vary due to missing data or early termination of the study.

A single 12-lead ECG was obtained at each time point and the following ECG intervals were determined: PR, QRS, QT, RR and corrected QT (QTc), QT interval corrected by Bazett's formula (QTcB), QT interval corrected by Fridericia's formula (QTcF). BL for ECG parameters was the value of Day 1. Change from BL was calculated as the individual post-Baseline value minus the BL value. By-visit sample sizes vary due to missing data or early termination of the study.

ALB and TP were measured at BL, Day 6, Day 30, Day 90 and Day 180. Baseline was the value obtained on Day 1. Change from BL was calculated as the individual post-Baseline value minus the BL value. By-visit sample sizes vary due to missing data or early termination of the study.

Ca, Cl, Gluc, K, Na and BUN were measured at BL, Day 6, Day 30, Day 90 and Day 180. BL was the value obtained on Day 1. Change from BL was calculated as the individual post-Baseline value minus the BL value. By-visit sample sizes vary due to missing data or early termination of the study.

ALP, ALT and AST were measured at BL, Day 6, Day 30, Day 90 and Day 180. BL was the value obtained on Day 1. Change from BL was calculated as the individual post-Baseline value minus the BL value. By-visit sample sizes vary due to missing data or early termination of the study.

Direct bilirubin, total bilirubin and creatinine were measured at BL, Day 6, Day 30, Day 90 and Day 180. BL was the value obtained on Day 1. Change from BL was calculated as the individual post-Baseline value minus the BL value. By-visit sample sizes vary due to missing data or early termination of the study.

EOS, LYM, Total ANC, PLT count and WBC count were measured at BL, Day 6, Day 30, Day 90 and Day 180. BL was the value obtained on Day 1. Change from BL was calculated as the individual post-Baseline value minus the BL value.By-visit sample sizes vary due to missing data or early termination of the study.

Hemoglobin was measured at BL Day 6, Day 30, Day 90 and Day 180. BL was the value obtained on Day 1. Change from BL was calculated as the individual post-Baseline value minus the BL value. . By-visit sample sizes vary due to missing data or early termination of the study.

Hematocrit was measured at Baseline, Day 6, Day 30, Day 90 and Day 180. BL was the value obtained on Day 1. Change from BL was calculated as the individual post-Baseline value minus the BL value.By-visit sample sizes vary due to missing data or early termination of the study.

The NIHSS is a 15 item, standardized, disease-specific, deficit scale which measures neurological impairment (level of consciousness, eye movements, visual fields, facial symmetry, motor strength (arm and leg), coordination, sensation, language (aphasia and dysarthria), and neglect) and is used to quantify participant status by measuring the severity of the stroke as assessed by NIHSS certified study personnel. The total NIHSS score is calculated as the sum of responses to the 15 items. The total NIHSS score ranges from 0-42, with a higher score indicative of a more severe impairment. By-visit sample sizes vary due to missing data or early termination of the study. Change from BL was calculated as the individual post-Baseline value minus the BL value. BL was defined as the value at Day 1.

C-SSRS is a clinician-rated scale that evaluates severity and change of suicidality by integrating both suicidality behavior and ideation. For Suicidal Ideation (SI), participants were scored non-suicidal:0, wish to be dead:1, non-specific active suicidal thoughts:2, active suicidal ideation with associated thoughts of methods without intent:3, active suicidal ideation with some intent to act on suicidal thoughts without clear plan:4, active suicidal ideation with plan and intent:5 (most severe). SI intensity total score was the sum of suicidal ideation severity rating scores for frequency, duration, controllability, deterrents, and reasons for ideation. For each item, each participant got an intensity score from 0(none) to 5(worst). Therefore, the suicidal ideation intensity total score range from 0 to 25, with a score of 0 given for no suicidal ideation.

Cmax is the maximum observed concentration of GSK249320 obtained at the end of infusion post dose on Day 6. Due to early termination of the study, this data was not collected.

Tmax is the time of the occurrence of Cmax. The Cmax is defined as the maximum observed concentration of GSK249320 obtained at the end of infusion post dose on day 6. Due to early termination of the study data for Tmax was not collected.

Blood samples were collected for determination of plasma concentrations of GSK249320. Terminal phase half-life was derived from the plasma concentration-time data. Only participants in the GSK249320 15 mg/kg group were analyzed.

Blood samples were collected for determination of plasma concentrations of GSK249320. AUC (0-5d) and AUC (0-inf) were derived from the plasma concentration-time data. AUC(0-5d) is the model predicted AUC over the planned TAU of 5 days. Only participants in the GSK249320 15 mg/kg group were analyzed.

Blood samples were collected for determination of plasma concentrations of GSK249320. CL was derived from the plasma concentration-time data. Analysis was performed for PK Population that comprised of all participants in the Safety Population who had at least one PK sample with a concentration above the non-quantifiable limit. Only participants in the GSK249320 15 mg/kg group were analyzed.

Blood samples were collected for determination of plasma concentrations of GSK249320. V1, V2 and Vss were derived from the plasma concentration-time data. Analysis was performed for PK Population that comprised of all participants in the Safety Population who had at least one PK sample with a concentration above the non-quantifiable limit. Only participants in the GSK249320 15 mg/kg group were analyzed.

Blood samples were collected and the presence of antibodies against GSK249320 was assessed using ECL assays. Positive result indicated presence of antibodies and negative result indicated absence of antibodies. Confirmed samples with presence of antibodies were further characterized for neutralizing activity as binding antibody (BAb) and neutralising antibody (NAb) by a neutralization assay.By-visit sample sizes vary due to missing data or early termination of the study.