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A Study to Evaluate Safety, Tolerability, Pharmacokinetics and Pharmacodynamics (PD) of GSK3888130B in Healthy Participants

A Randomized, Double-Blind, Placebo Controlled, Single Dose Escalation Study to Evaluate Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of GSK3888130B in Healthy Participants Aged 18-55 Inclusive

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05131971
Enrollment
54
Registered
2021-11-23
Start date
2021-11-01
Completion date
2023-10-12
Last updated
2025-03-26

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

Conditions

Colitis, Ulcerative, Multiple Sclerosis

Keywords

Anti-Drug Antibodies, Double-blind, GSK3888130B, Pharmacodynamics, Pharmacokinetics, Single Dose Escalation

Brief summary

This is a first time in human study designed to assess the safety, tolerability, pharmacokinetics and PD of GSK3888130B over a range of dose levels in healthy participants.

Interventions

DRUGGSK3888130B

GSK3888130B will be administered.

DRUGPlacebo

Placebo will be administered.

Sponsors

GlaxoSmithKline
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Masking description

This will be a double-blind study.

Intervention model description

Participants will be randomized to receive either GSK3888130B or placebo in single ascending dose cohorts.

Eligibility

Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

* Participant must be 18 to 55 years of age inclusive. * Participants who are overtly healthy as determined by medical evaluation including medical history, physical examination, laboratory tests, and cardiac monitoring. * Participants with a confirmed positive vaccination status for Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) vaccines administered at least 30 days prior to dosing in the study. * SARS-CoV-2 screening test negative as per local guidance. * Participants with history of current/seasonal vaccination status for influenza or who consent to receive influenza vaccine at least 30 days prior to dosing, if study dosing is during influenza season (1st October to 30th April). * Body weight greater than or equal to (\>=) 50 kilograms (kg) and body mass index (BMI) within the range 19.5-32 kilograms per square meter (kg/m\^2) (inclusive). * Male and/or female of non-childbearing potential * Capable of giving signed informed consent.

Exclusion criteria

* Prior medical history of anaphylaxis. * Immunodeficiency or autoimmunity assessed by medical history. * A history of recurrent infections. * Treatment of a chronic infection within 3 months prior to the first dose of study drug. * Any acute infection (including upper respiratory tract infections and urinary tract infections) which has not fully resolved within four weeks of dosing * History of sensitivity to any of the study medications, or components thereof or a history of drug or other allergy. * Current or chronic history of liver disease or known hepatic or biliary abnormalities. * Participants with a history of renal disease or renal abnormalities. * A clinically significant abnormality in the 12-lead ECG performed at screening. * A clinically significant abnormality in the Holter monitor performed at screening. * History of malignancy, including malignant or non-malignant skin cancer. * Participants with known SARS-CoV-2 positive contacts in the past 14 days. * Prior moderate/severe SARS-CoV-2 infection requiring oxygen supplementation or admission to hospital. * Antibiotics or antiviral therapy within 30 days of dosing. * Receipt of live vaccination within 30 days of dosing or plan to receive live vaccination during the study. * Use of prescription drugs or non-prescription drugs, including non-steroidal anti inflammatory drug (NSAIDs), within 7 days prior to dosing, if in the opinion of the Investigator (in consultation with the GlaxoSmithKline \[GSK\] Medical Monitor if required) the medication will interfere with the study procedures or compromise participant safety. * The participant has participated in a clinical trial and has received an investigational product within the following time period prior to the first dosing day of the current study: 30 days, 5 half-lives or twice the duration of the biological effect of the investigational product (whichever is longer). * Exposure to more than 4 new chemical entities within 12 months prior to dosing. * A positive drug/alcohol test at screening or Day -1 * The participant is at high-risk of Mycobacterium tuberculosis (MTB) infection in the opinion of the Investigator. * History of asthma, allergic rhinitis or atopic dermatitis defined by the need for intermittent or continuous therapy or any other significant allergies that, in the opinion of the investigator contraindicates their participation. * History of severe adverse reaction to local anesthetic. * Presence of keloids or history of keloids. * Prothrombin time (PT) or activated partial thromboplastin time (aPTT) \>1.5x upper limit of normal (ULN) at screening. * History or presence of excessive bleeding or coagulation disorders that in the opinion of the Investigator poses a safety risk with regards to participation in the trial. * Presence of tattoos, naevi or other skin abnormalities on the volar forearm Fitzpatrick skin color grades V in the opinion of the investigator, interfere with study assessments * Participating, within 7 days of dosing, in recreational sun-bathing, or use of sunbed, on the area of the skin from wrist to shoulder inclusive. * Current smoker or user of tobacco- or nicotine-containing products (e.g. nicotine patches or vaporizing devices) during or within 30 days prior to study participation. * An average weekly intake of \>14 units of alcohol.

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)Up to 160 daysAn AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of a study intervention, whether or not considered related to the study intervention. An SAE is any serious adverse event that, at any dose: results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect or any other situation according to medical or scientific judgment.
Number of Participants With Clinically Significant Changes in Hematology ResultsUp to 85 daysBlood samples were collected for analysis of following hematology parameters: Basophils, Eosinophils, Hematocrit, Hemoglobin (Hg), Lymphocytes, Mean corpuscular Hg, Mean corpuscular volume, Monocytes, Platelet count, Red blood cell count, Reticulocytes, Total Neutrophils, and White blood cells count (WBC). Number of participants with clinically significant changes in hematology were reported. Clinical significance was determined by the investigator.
Number of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineBaseline (Day 1) and up to 85 daysBlood samples were collected for the analysis of CD4+ T Cell Counts. The CD4+ T Cell Counts were graded according to National Cancer Institute - Common Terminology Criteria for Adverse Events (NCI-CTCAE). Grade 0: Above 0.5\*10\^9 cells/Liter (L), Grade 1: \<0.5 to 0.2\*10\^9 cells/L, Grade 2: \<0.2 to 0.05\*10\^9 cells/L, Grade 3: Below 0.05\*10\^9 cells/L. Baseline was defined as the latest pre-dose assessment. An increase was defined as an increase in grade relative to Baseline grade. Any worst-case post Baseline increase to Grade 1, Grade 2 and Grade 3 are presented.
Number of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineBaseline (Day 1) and up to 85 daysBlood samples were collected for the analysis of Creatinine. Creatinine was graded according to the NCI-CTCAE. Grade 0: \<1.5\* Baseline, or increase from Baseline \<26 micromoles per liter (umol/L), Grade 1: 1.5 to 1.9\* Baseline, or increase from Baseline \>=26 umol/L, Grade 2: 2.0 to 2.9\* Baseline, Grade 3: \>=3.0\* Baseline, or \>=354 umol/L. Baseline was defined as the latest pre-dose assessment. An increase was defined as an increase in grade relative to Baseline grade. Any worst-case post Baseline increase to Grade 1, Grade 2 and Grade 3 are presented.
Number of Participants With Clinically Significant Changes in Clinical Chemistry ResultsUp to 85 daysBlood samples were collected for analysis of following clinical chemistry parameters: Alanine Aminotransferase, Alkaline Phosphatase, Aspartate Aminotransferase, Calcium, Total and Direct bilirubin, Glucose, Potassium, Sodium, Total protein, Lactate dehydrogenase, Haptoglobins and Urea. Number of participants with clinically significant changes in clinical chemistry were reported. Clinical significance was determined by the investigator.
Number of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineBaseline (Day 1) and up to 85 daysUrine samples were collected for analysis of Specific gravity, potential of hydrogen (pH), glucose, protein, erythrocytes, ketones, bilirubin, urobilinogen, nitrite, and leukocyte in urine by dipstick. The dipstick test gives results in a semi-quantitative manner, and results for urinalysis parameters can be read as negative, trace, 1+, 2+, 3+ indicating proportional concentrations in the urine sample. Any increase means any increase to trace, 1+, 2+ or 3+ post-Baseline relative to Baseline. Baseline was defined as the latest pre-dose assessment. Number of participants with worst-case any increase in urinalysis results post-Baseline relative to Baseline has been presented.
Number of Participants With Clinically Significant Changes in Vital Sign ResultsUp to 85 daysVital signs included systolic and diastolic blood pressure, pulse and respiratory rate and were measured with the participant in semi-supine position after 5 minutes rest. Temperature was also measured as a vital sign but did not require positioning or rest prior to measuring. Clinical significance was determined by the investigator.
Number of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNABaseline (Day 1), Day 15 and Day 85VZV-Nucleic acid from blood samples were extracted using the QIASymphony SP followed by TaqMan real time polymerase chain reaction (PCR) for amplification and detection. Murine cytomegalovirus (mCMV) was used as an internal control (IC) and was introduced during the extraction process. CMV-Nucleic acid was extracted using the QIASymphony SP/AS followed by automated set up of Artus real time PCR using the Rotor-Gene Q for amplification and detection. Baseline was defined as the latest pre-dose assessment. Number of participants with Positive CMV DNA and VZV DNA has been presented.
Number of Participants With Positive Epstein-Barr Virus (EBV) DNABaseline (Day 1), Day 15 and Day 85EBV DNA was assessed and qualitative data has been presented. Data has been categorized into 'Positive \>=LLQ' and 'Positive \< LLQ'. LLQ is lower limit of quantification. Participants who had EBV DNA values \>=LLQ were categorized as 'Positive \>=LLQ'. This represents a positive result that is above the assay limit of quantification. Participants who had EBV DNA values \<LLQ were categorized as 'Positive \<LLQ'. This represents a positive result that is below the assay limit of quantification. Baseline was defined as the latest pre-dose assessment.
Number of Participants With Worst-case Post-Baseline Abnormal Electrocardiogram (ECG) FindingsUp to 85 daysTwelve lead ECGs were obtained using an ECG machine that automatically calculated the heart rate and measured PR, QRS, QT, and QT corrected interval. Abnormal findings were categorized as clinically significant (CS) and not clinically significant (NCS). Clinically significant abnormal findings are those which are not associated with the underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition. Data for number of participants with worst case post-Baseline abnormal ECG findings have been presented.

Secondary

MeasureTime frameDescription
Tmax of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDay 1: Pre-dose, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following subcutaneous administration.
Tmax of GSK3888130B for Dose Levels 6 and 7 Intravenous AdministrationDay 1: Pre-dose, 30 minutes, 1 hour, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following intravenous administration.
Half-life (t1/2) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDay 1: Pre-dose, 15 minutes, 30 minutes, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following intravenous administration.
t1/2 of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDay 1: Pre-dose, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following subcutaneous administration.
t1/2 of GSK3888130B for Dose Levels 6 and 7 Intravenous AdministrationDay 1: Pre-dose, 30 minutes, 1 hour, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following intravenous administration.
Serum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDay 1: Pre-dose, 15 minutes, 30 minutes, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85Blood samples were collected at indicated time points for measurement of serum concentrations of GSK3888130B following intravenous administration. Pharmacokinetic (PK) Population consisted of all participants in the Safety analysis set who had received an active study intervention and had at least 1 non-missing post dose PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).
Clearance Factor (CL/F) of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDay 1: Pre-dose, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following subcutaneous administration.
CL of GSK3888130B for Dose Levels 6 and 7 Intravenous AdministrationDay 1: Pre-dose, 30 minutes, 1 hour, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following intravenous administration.
Number of Participants With Positive Anti-drug Antibodies Against GSK3888130BBaseline (Day 1), Day 15, Day 29, Day 57 and Day 85Serum samples were collected for the determination of anti-drug antibodies (ADA) using a validated electrochemiluminescent (ECL) immunoassay. The assay involved screening, confirmation and titration steps. If serum samples tested positive in the screening assay, they were considered 'potentially positive' and were further analyzed for specificity using the confirmation assay. Samples that confirmed positive in the confirmation assay were reported as 'positive'. Confirmed positive ADA samples were further characterized in the titration assay to quasi-quantitate the amount of ADA in the sample. Baseline was defined as the latest pre-dose assessment.
Percent Peak Reduction From Baseline in Derived Free Interleukin 7 (IL 7) in BloodBaseline (Day 1) and up to 8 hoursFree IL-7 levels were derived from total IL-7 and total GSK3888130B concentrations (named as Derived Free IL-7) over time using a nonlinear mixed effects modelling approach. A target-mediated drug disposition model was used to fit the total IL-7 and total GSK3888130B assay concentration data to derive the free-IL-7 concentrations. Peak reduction relative to Baseline (Percent change) was calculated for each participant as; Peak reduction = (1 - minimum \[Free IL7/IL7 Baseline\])\*100. Baseline was defined as the latest pre-dose assessment.
Median Fluorescence Intensity (MdFI) of B-cell Lymphoma 2 (Bcl-2) Expression in CD4+ T Cells in BloodBaseline (Day 1) and Day 15Blood samples were collected at indicated time points to measure Bcl-2 Expression in CD4+ T Cells as median fluorescence intensity (MdFI). Baseline was defined as the latest pre-dose assessment. MdFI values as a measure of Bcl-2 expression in CD4+ T cells was measured by flow cytometry. Placebo arms were combined as pre-specified in reporting and analysis plan.
Clearance (CL) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDay 1: Pre-dose, 15 minutes, 30 minutes, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following intravenous administration.
Serum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDay 1: Pre-dose, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85Blood samples were collected at indicated time points for measurement of serum concentrations of GSK3888130B following subcutaneous administration.
Serum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDay 1: Pre-dose, 30 minutes, 1 hour, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85Blood samples were collected at indicated time points for measurement of serum concentrations of GSK3888130B following intravenous administration. Pharmacokinetic (PK) Population consisted of all participants in the Safety analysis set who had received an active study intervention and had at least 1 non-missing post dose PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).
Area Under the Concentration-time Curve From Time Zero to Time t (AUC[0 to t]) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDay 1: Pre-dose, 15 minutes, 30 minutes, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following intravenous administration.
AUC(0 to t) for Dose Levels 3 and 5 Subcutaneous AdministrationDay 1: Pre-dose, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following subcutaneous administration.
AUC(0 to t) for Dose Levels 6 and 7 Intravenous AdministrationDay 1: Pre-dose, 30 minutes, 1 hour, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following intravenous administration.
Maximum Observed Plasma Concentration (Cmax) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDay 1: Pre-dose, 15 minutes, 30 minutes, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following intravenous administration.
Cmax of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDay 1: Pre-dose, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following subcutaneous administration.
Cmax of GSK3888130B for Dose Levels 6 and 7 Intravenous AdministrationDay 1: Pre-dose, 30 minutes, 1 hour, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following intravenous administration.
Time to Cmax (Tmax) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDay 1: Pre-dose, 15 minutes, 30 minutes, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following intravenous administration.

Countries

United Kingdom

Participant flow

Pre-assignment details

A total 54 participants were enrolled in this study. Placebo arms were combined as pre-specified in reporting and analysis plan. Dosing information (dosage strengths) has not been disclosed as it is considered as company confidential information (CCI). Dose levels are presented as Dose levels 1 to 7 along with directionality of the dosage within each arm/group.

Participants by arm

ArmCount
Placebo
Participants received a placebo matching GSK3888130B either intravenous (IV) infusion or subcutaneous (SC) injection on Day 1.
15
GSK3888130B Dose Level 1 IV
Participants received a single dose of GSK3888130B dose level 1, intravenous (IV) infusion on Day 1. Dose level 1 is the lowest dose level.
3
GSK3888130B Dose Level 2 IV
Participants received a single dose of GSK3888130B dose level 2, IV infusion on Day 1. Dose level 2 is greater than dose level 1.
3
GSK3888130B Dose Level 3 SC
Participants received a single dose of GSK3888130B dose level 3, subcutaneous (SC) injection on Day 1. Dose level 3 is greater than dose level 2.
6
GSK3888130B Dose Level 4 IV
Participants received a single dose of GSK3888130B dose level 4, IV infusion on Day 1. Dose level 4 is greater than dose level 3.
6
GSK3888130B Dose Level 5 SC
Participants received a single dose of GSK3888130B dose level 5, SC injection on Day 1. Dose level 5 is greater than dose level 4.
6
GSK3888130B Dose Level 6 IV
Participants received a single dose of GSK3888130B dose level 6, IV infusion on Day 1. Dose level 6 is greater than dose level 5.
9
GSK3888130B Dose Level 7 IV
Participants received a single dose of GSK3888130B dose level 7, IV infusion on Day 1. Dose level 7 is the highest dose level.
6
Total54

Baseline characteristics

CharacteristicPlaceboGSK3888130B Dose Level 1 IVGSK3888130B Dose Level 2 IVGSK3888130B Dose Level 3 SCGSK3888130B Dose Level 4 IVGSK3888130B Dose Level 5 SCGSK3888130B Dose Level 6 IVGSK3888130B Dose Level 7 IVTotal
Age, Continuous40.3 YEARS
STANDARD_DEVIATION 8.93
40.0 YEARS
STANDARD_DEVIATION 7.94
48.3 YEARS
STANDARD_DEVIATION 3.06
38.8 YEARS
STANDARD_DEVIATION 8.75
41.2 YEARS
STANDARD_DEVIATION 9.52
40.8 YEARS
STANDARD_DEVIATION 7.7
38.7 YEARS
STANDARD_DEVIATION 9.86
41.5 YEARS
STANDARD_DEVIATION 11.57
40.6 YEARS
STANDARD_DEVIATION 8.78
Race/Ethnicity, Customized
All Other Races
15 Participants3 Participants3 Participants6 Participants6 Participants6 Participants9 Participants6 Participants54 Participants
Sex: Female, Male
Female
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Sex: Female, Male
Male
15 Participants3 Participants3 Participants6 Participants6 Participants6 Participants9 Participants6 Participants54 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
EG006
affected / at risk
EG007
affected / at risk
deaths
Total, all-cause mortality
0 / 150 / 30 / 30 / 60 / 60 / 60 / 90 / 6
other
Total, other adverse events
8 / 153 / 32 / 36 / 62 / 64 / 68 / 95 / 6
serious
Total, serious adverse events
0 / 150 / 30 / 30 / 60 / 60 / 60 / 90 / 6

Outcome results

Primary

Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)

An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of a study intervention, whether or not considered related to the study intervention. An SAE is any serious adverse event that, at any dose: results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect or any other situation according to medical or scientific judgment.

Time frame: Up to 160 days

Population: Safety Population included all participants who received study intervention. Placebo arms were combined as pre-specified in reporting and analysis plan.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)AEs8 Participants
PlaceboNumber of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)SAEs0 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)AEs3 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)SAEs0 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)AEs2 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)SAEs0 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)AEs6 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)SAEs0 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)AEs2 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)SAEs0 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)AEs4 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)SAEs0 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)SAEs0 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)AEs8 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)AEs5 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)SAEs0 Participants
Primary

Number of Participants With Clinically Significant Changes in Clinical Chemistry Results

Blood samples were collected for analysis of following clinical chemistry parameters: Alanine Aminotransferase, Alkaline Phosphatase, Aspartate Aminotransferase, Calcium, Total and Direct bilirubin, Glucose, Potassium, Sodium, Total protein, Lactate dehydrogenase, Haptoglobins and Urea. Number of participants with clinically significant changes in clinical chemistry were reported. Clinical significance was determined by the investigator.

Time frame: Up to 85 days

Population: Safety Population included all participants who received study intervention. Placebo arms were combined as pre-specified in reporting and analysis plan.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants With Clinically Significant Changes in Clinical Chemistry Results0 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Clinically Significant Changes in Clinical Chemistry Results0 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Clinically Significant Changes in Clinical Chemistry Results0 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Clinically Significant Changes in Clinical Chemistry Results0 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Clinically Significant Changes in Clinical Chemistry Results0 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Clinically Significant Changes in Clinical Chemistry Results0 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Clinically Significant Changes in Clinical Chemistry Results0 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Clinically Significant Changes in Clinical Chemistry Results0 Participants
Primary

Number of Participants With Clinically Significant Changes in Hematology Results

Blood samples were collected for analysis of following hematology parameters: Basophils, Eosinophils, Hematocrit, Hemoglobin (Hg), Lymphocytes, Mean corpuscular Hg, Mean corpuscular volume, Monocytes, Platelet count, Red blood cell count, Reticulocytes, Total Neutrophils, and White blood cells count (WBC). Number of participants with clinically significant changes in hematology were reported. Clinical significance was determined by the investigator.

Time frame: Up to 85 days

Population: Safety Population included all participants who received study intervention. Placebo arms were combined as pre-specified in reporting and analysis plan.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants With Clinically Significant Changes in Hematology Results0 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Clinically Significant Changes in Hematology Results0 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Clinically Significant Changes in Hematology Results0 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Clinically Significant Changes in Hematology Results0 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Clinically Significant Changes in Hematology Results0 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Clinically Significant Changes in Hematology Results0 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Clinically Significant Changes in Hematology Results0 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Clinically Significant Changes in Hematology Results0 Participants
Primary

Number of Participants With Clinically Significant Changes in Vital Sign Results

Vital signs included systolic and diastolic blood pressure, pulse and respiratory rate and were measured with the participant in semi-supine position after 5 minutes rest. Temperature was also measured as a vital sign but did not require positioning or rest prior to measuring. Clinical significance was determined by the investigator.

Time frame: Up to 85 days

Population: Safety Population included all participants who received study intervention. Placebo arms were combined as pre-specified in reporting and analysis plan.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants With Clinically Significant Changes in Vital Sign Results0 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Clinically Significant Changes in Vital Sign Results0 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Clinically Significant Changes in Vital Sign Results0 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Clinically Significant Changes in Vital Sign Results0 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Clinically Significant Changes in Vital Sign Results0 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Clinically Significant Changes in Vital Sign Results0 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Clinically Significant Changes in Vital Sign Results0 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Clinically Significant Changes in Vital Sign Results0 Participants
Primary

Number of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNA

VZV-Nucleic acid from blood samples were extracted using the QIASymphony SP followed by TaqMan real time polymerase chain reaction (PCR) for amplification and detection. Murine cytomegalovirus (mCMV) was used as an internal control (IC) and was introduced during the extraction process. CMV-Nucleic acid was extracted using the QIASymphony SP/AS followed by automated set up of Artus real time PCR using the Rotor-Gene Q for amplification and detection. Baseline was defined as the latest pre-dose assessment. Number of participants with Positive CMV DNA and VZV DNA has been presented.

Time frame: Baseline (Day 1), Day 15 and Day 85

Population: Safety Population included all participants who received study intervention. Only those participants who were measured and analyzed (i.e., contributed data reported in the table) were included in the 'Overall Number of Participants Analyzed' field. 'Number Analyzed' signifies participants evaluable for the specified time points. Placebo arms were combined as pre-specified in reporting and analysis plan.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNAVaricella Zoster Virus DNA, Day 150 Participants
PlaceboNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNAVaricella Zoster Virus DNA, Baseline (Day 1)0 Participants
PlaceboNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNACytomegalovirus DNA, Day 850 Participants
PlaceboNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNACytomegalovirus DNA, Baseline (Day 1)0 Participants
PlaceboNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNAVaricella Zoster Virus DNA, Day 850 Participants
PlaceboNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNACytomegalovirus DNA, Day 150 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNACytomegalovirus DNA, Day 150 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNAVaricella Zoster Virus DNA, Day 150 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNACytomegalovirus DNA, Day 850 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNAVaricella Zoster Virus DNA, Baseline (Day 1)0 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNAVaricella Zoster Virus DNA, Day 850 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNACytomegalovirus DNA, Baseline (Day 1)0 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNACytomegalovirus DNA, Baseline (Day 1)0 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNACytomegalovirus DNA, Day 150 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNACytomegalovirus DNA, Day 850 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNAVaricella Zoster Virus DNA, Baseline (Day 1)0 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNAVaricella Zoster Virus DNA, Day 150 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNAVaricella Zoster Virus DNA, Day 850 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNAVaricella Zoster Virus DNA, Baseline (Day 1)0 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNACytomegalovirus DNA, Day 850 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNACytomegalovirus DNA, Baseline (Day 1)0 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNAVaricella Zoster Virus DNA, Day 150 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNACytomegalovirus DNA, Day 150 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNAVaricella Zoster Virus DNA, Day 850 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNAVaricella Zoster Virus DNA, Day 850 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNAVaricella Zoster Virus DNA, Baseline (Day 1)0 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNACytomegalovirus DNA, Day 850 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNACytomegalovirus DNA, Baseline (Day 1)0 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNAVaricella Zoster Virus DNA, Day 150 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNACytomegalovirus DNA, Day 150 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNAVaricella Zoster Virus DNA, Baseline (Day 1)0 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNACytomegalovirus DNA, Day 150 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNAVaricella Zoster Virus DNA, Day 850 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNACytomegalovirus DNA, Day 850 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNAVaricella Zoster Virus DNA, Day 150 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNACytomegalovirus DNA, Baseline (Day 1)0 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNAVaricella Zoster Virus DNA, Day 150 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNACytomegalovirus DNA, Day 150 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNACytomegalovirus DNA, Baseline (Day 1)0 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNAVaricella Zoster Virus DNA, Day 850 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNAVaricella Zoster Virus DNA, Baseline (Day 1)0 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNACytomegalovirus DNA, Day 850 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNAVaricella Zoster Virus DNA, Baseline (Day 1)0 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNACytomegalovirus DNA, Day 850 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNAVaricella Zoster Virus DNA, Day 850 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNACytomegalovirus DNA, Day 150 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNACytomegalovirus DNA, Baseline (Day 1)0 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Positive Cytomegalovirus (CMV) Deoxyribonucleic Acid (DNA) and Varicella Zoster Virus (VZV) DNAVaricella Zoster Virus DNA, Day 150 Participants
Primary

Number of Participants With Positive Epstein-Barr Virus (EBV) DNA

EBV DNA was assessed and qualitative data has been presented. Data has been categorized into 'Positive \>=LLQ' and 'Positive \< LLQ'. LLQ is lower limit of quantification. Participants who had EBV DNA values \>=LLQ were categorized as 'Positive \>=LLQ'. This represents a positive result that is above the assay limit of quantification. Participants who had EBV DNA values \<LLQ were categorized as 'Positive \<LLQ'. This represents a positive result that is below the assay limit of quantification. Baseline was defined as the latest pre-dose assessment.

Time frame: Baseline (Day 1), Day 15 and Day 85

Population: Safety Population included all participants who received study intervention. Only those participants who were measured and analyzed (i.e., contributed data reported in the table) were included in the 'Overall Number of Participants Analyzed' field. 'Number Analyzed' signifies participants evaluable for the specified time points. Placebo arms were combined as pre-specified in reporting and analysis plan.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 85, Positive < LLQ0 Participants
PlaceboNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 15, Positive >= LLQ0 Participants
PlaceboNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 85, Positive >= LLQ1 Participants
PlaceboNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 15, Positive < LLQ0 Participants
PlaceboNumber of Participants With Positive Epstein-Barr Virus (EBV) DNABaseline (Day 1), Positive >= LLQ2 Participants
PlaceboNumber of Participants With Positive Epstein-Barr Virus (EBV) DNABaseline (Day 1), Positive < LLQ0 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNABaseline (Day 1), Positive >= LLQ0 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNABaseline (Day 1), Positive < LLQ1 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 15, Positive >= LLQ0 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 85, Positive < LLQ0 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 15, Positive < LLQ0 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 85, Positive >= LLQ1 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 15, Positive >= LLQ0 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 85, Positive < LLQ0 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNABaseline (Day 1), Positive < LLQ0 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 15, Positive < LLQ0 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNABaseline (Day 1), Positive >= LLQ0 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 85, Positive >= LLQ0 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 85, Positive < LLQ0 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 85, Positive >= LLQ0 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 15, Positive >= LLQ0 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 15, Positive < LLQ0 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Positive Epstein-Barr Virus (EBV) DNABaseline (Day 1), Positive < LLQ0 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Positive Epstein-Barr Virus (EBV) DNABaseline (Day 1), Positive >= LLQ1 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNABaseline (Day 1), Positive < LLQ0 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 15, Positive < LLQ1 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNABaseline (Day 1), Positive >= LLQ0 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 15, Positive >= LLQ0 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 85, Positive >= LLQ1 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 85, Positive < LLQ0 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Positive Epstein-Barr Virus (EBV) DNABaseline (Day 1), Positive >= LLQ0 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Positive Epstein-Barr Virus (EBV) DNABaseline (Day 1), Positive < LLQ1 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 85, Positive < LLQ0 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 85, Positive >= LLQ0 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 15, Positive < LLQ0 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 15, Positive >= LLQ0 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 15, Positive >= LLQ1 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 85, Positive >= LLQ0 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNABaseline (Day 1), Positive < LLQ0 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNABaseline (Day 1), Positive >= LLQ0 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 15, Positive < LLQ2 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 85, Positive < LLQ0 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 85, Positive >= LLQ1 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 15, Positive < LLQ1 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNABaseline (Day 1), Positive >= LLQ2 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNABaseline (Day 1), Positive < LLQ1 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 85, Positive < LLQ0 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Positive Epstein-Barr Virus (EBV) DNADay 15, Positive >= LLQ0 Participants
Primary

Number of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to Baseline

Urine samples were collected for analysis of Specific gravity, potential of hydrogen (pH), glucose, protein, erythrocytes, ketones, bilirubin, urobilinogen, nitrite, and leukocyte in urine by dipstick. The dipstick test gives results in a semi-quantitative manner, and results for urinalysis parameters can be read as negative, trace, 1+, 2+, 3+ indicating proportional concentrations in the urine sample. Any increase means any increase to trace, 1+, 2+ or 3+ post-Baseline relative to Baseline. Baseline was defined as the latest pre-dose assessment. Number of participants with worst-case any increase in urinalysis results post-Baseline relative to Baseline has been presented.

Time frame: Baseline (Day 1) and up to 85 days

Population: Safety Population included all participants who received study intervention. Placebo arms were combined as pre-specified in reporting and analysis plan.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineUrobilinogen0 Participants
PlaceboNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineProtein0 Participants
PlaceboNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineGlucose0 Participants
PlaceboNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineNitrite0 Participants
PlaceboNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselinepH12 Participants
PlaceboNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineKetones1 Participants
PlaceboNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineBilirubin0 Participants
PlaceboNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineLeukocytes0 Participants
PlaceboNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineSpecific Gravity8 Participants
PlaceboNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineErythrocytes0 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineProtein0 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineBilirubin0 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineLeukocytes0 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselinepH3 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineGlucose0 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineNitrite1 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineSpecific Gravity3 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineErythrocytes0 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineUrobilinogen0 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineKetones0 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineProtein0 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineUrobilinogen0 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineGlucose0 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselinepH2 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineSpecific Gravity2 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineBilirubin0 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineKetones0 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineErythrocytes0 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineNitrite0 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineLeukocytes0 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineUrobilinogen0 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineGlucose1 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineErythrocytes1 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineKetones0 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineLeukocytes0 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineNitrite0 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineProtein0 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineSpecific Gravity4 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineBilirubin0 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselinepH5 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineErythrocytes0 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineBilirubin0 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineProtein0 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselinepH4 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineLeukocytes0 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineGlucose0 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineUrobilinogen0 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineNitrite0 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineKetones0 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineSpecific Gravity5 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineBilirubin0 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineLeukocytes0 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineGlucose0 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineNitrite0 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineProtein0 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselinepH6 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineSpecific Gravity6 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineUrobilinogen0 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineErythrocytes2 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineKetones0 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineLeukocytes0 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineNitrite0 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineUrobilinogen0 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineSpecific Gravity5 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineBilirubin0 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineKetones0 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineProtein1 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineErythrocytes1 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineGlucose0 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselinepH8 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineBilirubin0 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineKetones1 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineNitrite0 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineSpecific Gravity6 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselinepH5 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineErythrocytes0 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineLeukocytes0 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineGlucose0 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineProtein2 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Worst-case Any Increase in Urinalysis Results Post-Baseline Relative to BaselineUrobilinogen0 Participants
Primary

Number of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to Baseline

Blood samples were collected for the analysis of CD4+ T Cell Counts. The CD4+ T Cell Counts were graded according to National Cancer Institute - Common Terminology Criteria for Adverse Events (NCI-CTCAE). Grade 0: Above 0.5\*10\^9 cells/Liter (L), Grade 1: \<0.5 to 0.2\*10\^9 cells/L, Grade 2: \<0.2 to 0.05\*10\^9 cells/L, Grade 3: Below 0.05\*10\^9 cells/L. Baseline was defined as the latest pre-dose assessment. An increase was defined as an increase in grade relative to Baseline grade. Any worst-case post Baseline increase to Grade 1, Grade 2 and Grade 3 are presented.

Time frame: Baseline (Day 1) and up to 85 days

Population: Safety Population included all participants who received study intervention. Placebo arms were combined as pre-specified in reporting and analysis plan.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 14 Participants
PlaceboNumber of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 20 Participants
PlaceboNumber of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 30 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 30 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 11 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 20 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 20 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 11 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 30 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 20 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 30 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 11 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 30 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 11 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 20 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 13 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 30 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 20 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 20 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 15 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 30 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 30 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 20 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Worst-case Cluster of Differentiation (CD) 4+ T Cell Counts Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 14 Participants
Primary

Number of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to Baseline

Blood samples were collected for the analysis of Creatinine. Creatinine was graded according to the NCI-CTCAE. Grade 0: \<1.5\* Baseline, or increase from Baseline \<26 micromoles per liter (umol/L), Grade 1: 1.5 to 1.9\* Baseline, or increase from Baseline \>=26 umol/L, Grade 2: 2.0 to 2.9\* Baseline, Grade 3: \>=3.0\* Baseline, or \>=354 umol/L. Baseline was defined as the latest pre-dose assessment. An increase was defined as an increase in grade relative to Baseline grade. Any worst-case post Baseline increase to Grade 1, Grade 2 and Grade 3 are presented.

Time frame: Baseline (Day 1) and up to 85 days

Population: Safety Population included all participants who received study intervention. Placebo arms were combined as pre-specified in reporting and analysis plan.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 30 Participants
PlaceboNumber of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 20 Participants
PlaceboNumber of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 10 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 30 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 10 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 20 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 30 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 10 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 20 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 20 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 10 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 30 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 20 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 10 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 30 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 20 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 10 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 30 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 20 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 11 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 30 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 10 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 20 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Worst-case Creatinine Results by Maximum Grade Increase Post-Baseline Relative to BaselineIncrease to Grade 30 Participants
Primary

Number of Participants With Worst-case Post-Baseline Abnormal Electrocardiogram (ECG) Findings

Twelve lead ECGs were obtained using an ECG machine that automatically calculated the heart rate and measured PR, QRS, QT, and QT corrected interval. Abnormal findings were categorized as clinically significant (CS) and not clinically significant (NCS). Clinically significant abnormal findings are those which are not associated with the underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition. Data for number of participants with worst case post-Baseline abnormal ECG findings have been presented.

Time frame: Up to 85 days

Population: Safety Population included all participants who received study intervention. Placebo arms were combined as pre-specified in reporting and analysis plan.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants With Worst-case Post-Baseline Abnormal Electrocardiogram (ECG) FindingsNOT CLINICALLY SIGNIFICANT12 Participants
PlaceboNumber of Participants With Worst-case Post-Baseline Abnormal Electrocardiogram (ECG) FindingsCLINICALLY SIGNIFICANT0 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Worst-case Post-Baseline Abnormal Electrocardiogram (ECG) FindingsCLINICALLY SIGNIFICANT0 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Worst-case Post-Baseline Abnormal Electrocardiogram (ECG) FindingsNOT CLINICALLY SIGNIFICANT1 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Worst-case Post-Baseline Abnormal Electrocardiogram (ECG) FindingsNOT CLINICALLY SIGNIFICANT2 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Worst-case Post-Baseline Abnormal Electrocardiogram (ECG) FindingsCLINICALLY SIGNIFICANT0 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Worst-case Post-Baseline Abnormal Electrocardiogram (ECG) FindingsCLINICALLY SIGNIFICANT0 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Worst-case Post-Baseline Abnormal Electrocardiogram (ECG) FindingsNOT CLINICALLY SIGNIFICANT6 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Worst-case Post-Baseline Abnormal Electrocardiogram (ECG) FindingsCLINICALLY SIGNIFICANT0 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Worst-case Post-Baseline Abnormal Electrocardiogram (ECG) FindingsNOT CLINICALLY SIGNIFICANT4 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Worst-case Post-Baseline Abnormal Electrocardiogram (ECG) FindingsCLINICALLY SIGNIFICANT0 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Worst-case Post-Baseline Abnormal Electrocardiogram (ECG) FindingsNOT CLINICALLY SIGNIFICANT6 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Worst-case Post-Baseline Abnormal Electrocardiogram (ECG) FindingsCLINICALLY SIGNIFICANT0 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Worst-case Post-Baseline Abnormal Electrocardiogram (ECG) FindingsNOT CLINICALLY SIGNIFICANT7 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Worst-case Post-Baseline Abnormal Electrocardiogram (ECG) FindingsNOT CLINICALLY SIGNIFICANT5 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Worst-case Post-Baseline Abnormal Electrocardiogram (ECG) FindingsCLINICALLY SIGNIFICANT0 Participants
Secondary

Area Under the Concentration-time Curve From Time Zero to Time t (AUC[0 to t]) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous Administration

Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following intravenous administration.

Time frame: Day 1: Pre-dose, 15 minutes, 30 minutes, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85

Population: Pharmacokinetic Population consisted of all participants in the Safety analysis set who had received an active study intervention and had at least 1 non-missing post dose PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
PlaceboArea Under the Concentration-time Curve From Time Zero to Time t (AUC[0 to t]) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous Administration65.81 Hours*micrograms per milliliter(h*ug/mL)Geometric Coefficient of Variation 75.5
GSK3888130B Dose Level 1 IVArea Under the Concentration-time Curve From Time Zero to Time t (AUC[0 to t]) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous Administration1837.01 Hours*micrograms per milliliter(h*ug/mL)Geometric Coefficient of Variation 48.86
GSK3888130B Dose Level 2 IVArea Under the Concentration-time Curve From Time Zero to Time t (AUC[0 to t]) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous Administration13524.34 Hours*micrograms per milliliter(h*ug/mL)Geometric Coefficient of Variation 16.29
Secondary

AUC(0 to t) for Dose Levels 3 and 5 Subcutaneous Administration

Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following subcutaneous administration.

Time frame: Day 1: Pre-dose, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85

Population: Pharmacokinetic Population consisted of all participants in the Safety analysis set who had received an active study intervention and had at least 1 non-missing post dose PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
PlaceboAUC(0 to t) for Dose Levels 3 and 5 Subcutaneous Administration3550.71 h*ug/mLGeometric Coefficient of Variation 38.63
GSK3888130B Dose Level 1 IVAUC(0 to t) for Dose Levels 3 and 5 Subcutaneous Administration35669.70 h*ug/mLGeometric Coefficient of Variation 25.35
Secondary

AUC(0 to t) for Dose Levels 6 and 7 Intravenous Administration

Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following intravenous administration.

Time frame: Day 1: Pre-dose, 30 minutes, 1 hour, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85

Population: Pharmacokinetic Population consisted of all participants in the Safety analysis set who had received an active study intervention and had at least 1 non-missing post dose PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
PlaceboAUC(0 to t) for Dose Levels 6 and 7 Intravenous Administration153885.4 h*ug/mLGeometric Coefficient of Variation 12.54
GSK3888130B Dose Level 1 IVAUC(0 to t) for Dose Levels 6 and 7 Intravenous Administration387454.3 h*ug/mLGeometric Coefficient of Variation 24.96
Secondary

Clearance (CL) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous Administration

Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following intravenous administration.

Time frame: Day 1: Pre-dose, 15 minutes, 30 minutes, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85

Population: Pharmacokinetic Population consisted of all participants in the Safety analysis set who had received an active study intervention and had at least 1 non-missing post dose PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
PlaceboClearance (CL) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous Administration21.501 Milliliter per hour (mL/h)Geometric Coefficient of Variation 38.138
GSK3888130B Dose Level 1 IVClearance (CL) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous Administration4.240 Milliliter per hour (mL/h)Geometric Coefficient of Variation 52.782
GSK3888130B Dose Level 2 IVClearance (CL) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous Administration6.542 Milliliter per hour (mL/h)Geometric Coefficient of Variation 22.034
Secondary

Clearance Factor (CL/F) of GSK3888130B for Dose Levels 3 and 5 Subcutaneous Administration

Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following subcutaneous administration.

Time frame: Day 1: Pre-dose, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85

Population: Pharmacokinetic Population consisted of all participants in the Safety analysis set who had received an active study intervention and had at least 1 non-missing post dose PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
PlaceboClearance Factor (CL/F) of GSK3888130B for Dose Levels 3 and 5 Subcutaneous Administration9.149 mL/hGeometric Coefficient of Variation 36.81
GSK3888130B Dose Level 1 IVClearance Factor (CL/F) of GSK3888130B for Dose Levels 3 and 5 Subcutaneous Administration9.297 mL/hGeometric Coefficient of Variation 27.211
Secondary

CL of GSK3888130B for Dose Levels 6 and 7 Intravenous Administration

Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following intravenous administration.

Time frame: Day 1: Pre-dose, 30 minutes, 1 hour, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85

Population: Pharmacokinetic Population consisted of all participants in the Safety analysis set who had received an active study intervention and had at least 1 non-missing post dose PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
PlaceboCL of GSK3888130B for Dose Levels 6 and 7 Intravenous Administration5.920 mL/hGeometric Coefficient of Variation 11.548
GSK3888130B Dose Level 1 IVCL of GSK3888130B for Dose Levels 6 and 7 Intravenous Administration6.860 mL/hGeometric Coefficient of Variation 28.592
Secondary

Cmax of GSK3888130B for Dose Levels 3 and 5 Subcutaneous Administration

Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following subcutaneous administration.

Time frame: Day 1: Pre-dose, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85

Population: Pharmacokinetic Population consisted of all participants in the Safety analysis set who had received an active study intervention and had at least 1 non-missing post dose PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
PlaceboCmax of GSK3888130B for Dose Levels 3 and 5 Subcutaneous Administration3.4609 ug/mLGeometric Coefficient of Variation 31.2624
GSK3888130B Dose Level 1 IVCmax of GSK3888130B for Dose Levels 3 and 5 Subcutaneous Administration36.3795 ug/mLGeometric Coefficient of Variation 24.923
Secondary

Cmax of GSK3888130B for Dose Levels 6 and 7 Intravenous Administration

Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following intravenous administration.

Time frame: Day 1: Pre-dose, 30 minutes, 1 hour, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85

Population: Pharmacokinetic Population consisted of all participants in the Safety analysis set who had received an active study intervention and had at least 1 non-missing post dose PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
PlaceboCmax of GSK3888130B for Dose Levels 6 and 7 Intravenous Administration386.4759 ug/mLGeometric Coefficient of Variation 29.7837
GSK3888130B Dose Level 1 IVCmax of GSK3888130B for Dose Levels 6 and 7 Intravenous Administration907.7045 ug/mLGeometric Coefficient of Variation 11.2907
Secondary

Half-life (t1/2) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous Administration

Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following intravenous administration.

Time frame: Day 1: Pre-dose, 15 minutes, 30 minutes, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85

Population: Pharmacokinetic Population consisted of all participants in the Safety analysis set who had received an active study intervention and had at least 1 non-missing post dose PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
PlaceboHalf-life (t1/2) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous Administration123.73 HourGeometric Coefficient of Variation 35.44
GSK3888130B Dose Level 1 IVHalf-life (t1/2) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous Administration633.05 HourGeometric Coefficient of Variation 32.53
GSK3888130B Dose Level 2 IVHalf-life (t1/2) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous Administration627.11 HourGeometric Coefficient of Variation 17.66
Secondary

Maximum Observed Plasma Concentration (Cmax) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous Administration

Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following intravenous administration.

Time frame: Day 1: Pre-dose, 15 minutes, 30 minutes, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85

Population: Pharmacokinetic Population consisted of all participants in the Safety analysis set who had received an active study intervention and had at least 1 non-missing post dose PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
PlaceboMaximum Observed Plasma Concentration (Cmax) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous Administration0.9034 Micrograms per milliliter (ug/mL)Geometric Coefficient of Variation 21.5707
GSK3888130B Dose Level 1 IVMaximum Observed Plasma Concentration (Cmax) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous Administration4.8156 Micrograms per milliliter (ug/mL)Geometric Coefficient of Variation 18.7069
GSK3888130B Dose Level 2 IVMaximum Observed Plasma Concentration (Cmax) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous Administration35.6330 Micrograms per milliliter (ug/mL)Geometric Coefficient of Variation 14.4965
Secondary

Median Fluorescence Intensity (MdFI) of B-cell Lymphoma 2 (Bcl-2) Expression in CD4+ T Cells in Blood

Blood samples were collected at indicated time points to measure Bcl-2 Expression in CD4+ T Cells as median fluorescence intensity (MdFI). Baseline was defined as the latest pre-dose assessment. MdFI values as a measure of Bcl-2 expression in CD4+ T cells was measured by flow cytometry. Placebo arms were combined as pre-specified in reporting and analysis plan.

Time frame: Baseline (Day 1) and Day 15

Population: Pharmacodynamic (PD) Population consisted of all participants in the Safety Population who had at least one post Baseline PD result. Only those participants who were measured and analyzed (i.e., contributed data reported in the table) were included in 'Overall Number of Participants Analyzed' field. 'Number Analyzed' signifies participants evaluable for specified time points.

ArmMeasureGroupValue (MEDIAN)
PlaceboMedian Fluorescence Intensity (MdFI) of B-cell Lymphoma 2 (Bcl-2) Expression in CD4+ T Cells in BloodBaseline (Day 1)92427.0 Median fluorescence intensity
PlaceboMedian Fluorescence Intensity (MdFI) of B-cell Lymphoma 2 (Bcl-2) Expression in CD4+ T Cells in BloodDay 1588899.0 Median fluorescence intensity
GSK3888130B Dose Level 1 IVMedian Fluorescence Intensity (MdFI) of B-cell Lymphoma 2 (Bcl-2) Expression in CD4+ T Cells in BloodBaseline (Day 1)64576.0 Median fluorescence intensity
GSK3888130B Dose Level 1 IVMedian Fluorescence Intensity (MdFI) of B-cell Lymphoma 2 (Bcl-2) Expression in CD4+ T Cells in BloodDay 1579882.5 Median fluorescence intensity
GSK3888130B Dose Level 2 IVMedian Fluorescence Intensity (MdFI) of B-cell Lymphoma 2 (Bcl-2) Expression in CD4+ T Cells in BloodBaseline (Day 1)68096.0 Median fluorescence intensity
GSK3888130B Dose Level 2 IVMedian Fluorescence Intensity (MdFI) of B-cell Lymphoma 2 (Bcl-2) Expression in CD4+ T Cells in BloodDay 1575396.0 Median fluorescence intensity
GSK3888130B Dose Level 3 SCMedian Fluorescence Intensity (MdFI) of B-cell Lymphoma 2 (Bcl-2) Expression in CD4+ T Cells in BloodBaseline (Day 1)92724.0 Median fluorescence intensity
GSK3888130B Dose Level 3 SCMedian Fluorescence Intensity (MdFI) of B-cell Lymphoma 2 (Bcl-2) Expression in CD4+ T Cells in BloodDay 1562436.5 Median fluorescence intensity
GSK3888130B Dose Level 4 IVMedian Fluorescence Intensity (MdFI) of B-cell Lymphoma 2 (Bcl-2) Expression in CD4+ T Cells in BloodBaseline (Day 1)73182.5 Median fluorescence intensity
GSK3888130B Dose Level 4 IVMedian Fluorescence Intensity (MdFI) of B-cell Lymphoma 2 (Bcl-2) Expression in CD4+ T Cells in BloodDay 1552592.0 Median fluorescence intensity
GSK3888130B Dose Level 5 SCMedian Fluorescence Intensity (MdFI) of B-cell Lymphoma 2 (Bcl-2) Expression in CD4+ T Cells in BloodBaseline (Day 1)93540.5 Median fluorescence intensity
GSK3888130B Dose Level 5 SCMedian Fluorescence Intensity (MdFI) of B-cell Lymphoma 2 (Bcl-2) Expression in CD4+ T Cells in BloodDay 1555938.5 Median fluorescence intensity
GSK3888130B Dose Level 6 IVMedian Fluorescence Intensity (MdFI) of B-cell Lymphoma 2 (Bcl-2) Expression in CD4+ T Cells in BloodDay 1550715.0 Median fluorescence intensity
GSK3888130B Dose Level 6 IVMedian Fluorescence Intensity (MdFI) of B-cell Lymphoma 2 (Bcl-2) Expression in CD4+ T Cells in BloodBaseline (Day 1)90059.0 Median fluorescence intensity
GSK3888130B Dose Level 7 IVMedian Fluorescence Intensity (MdFI) of B-cell Lymphoma 2 (Bcl-2) Expression in CD4+ T Cells in BloodBaseline (Day 1)101786.0 Median fluorescence intensity
GSK3888130B Dose Level 7 IVMedian Fluorescence Intensity (MdFI) of B-cell Lymphoma 2 (Bcl-2) Expression in CD4+ T Cells in BloodDay 1558098.5 Median fluorescence intensity
Secondary

Number of Participants With Positive Anti-drug Antibodies Against GSK3888130B

Serum samples were collected for the determination of anti-drug antibodies (ADA) using a validated electrochemiluminescent (ECL) immunoassay. The assay involved screening, confirmation and titration steps. If serum samples tested positive in the screening assay, they were considered 'potentially positive' and were further analyzed for specificity using the confirmation assay. Samples that confirmed positive in the confirmation assay were reported as 'positive'. Confirmed positive ADA samples were further characterized in the titration assay to quasi-quantitate the amount of ADA in the sample. Baseline was defined as the latest pre-dose assessment.

Time frame: Baseline (Day 1), Day 15, Day 29, Day 57 and Day 85

Population: Safety Population included all participants who received study intervention. Only those participants who were measured and analyzed (i.e., contributed data reported in the table) were included in the 'Overall Number of Participants Analyzed' field. 'Number Analyzed' signifies participants evaluable for the specified time points. Placebo arms were combined as pre-specified in reporting and analysis plan.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
PlaceboNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 850 Participants
PlaceboNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 570 Participants
PlaceboNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 290 Participants
PlaceboNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BBaseline (Day 1)0 Participants
PlaceboNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 150 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BBaseline (Day 1)0 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 850 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 570 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 150 Participants
GSK3888130B Dose Level 1 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 290 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 850 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 150 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 290 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 570 Participants
GSK3888130B Dose Level 2 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BBaseline (Day 1)0 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 850 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 570 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 290 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 150 Participants
GSK3888130B Dose Level 3 SCNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BBaseline (Day 1)0 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 291 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 851 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BBaseline (Day 1)1 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 571 Participants
GSK3888130B Dose Level 4 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 151 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 570 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 150 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 290 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BBaseline (Day 1)0 Participants
GSK3888130B Dose Level 5 SCNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 850 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 850 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BBaseline (Day 1)0 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 290 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 150 Participants
GSK3888130B Dose Level 6 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 570 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 850 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BBaseline (Day 1)0 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 290 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 570 Participants
GSK3888130B Dose Level 7 IVNumber of Participants With Positive Anti-drug Antibodies Against GSK3888130BDay 150 Participants
Secondary

Percent Peak Reduction From Baseline in Derived Free Interleukin 7 (IL 7) in Blood

Free IL-7 levels were derived from total IL-7 and total GSK3888130B concentrations (named as Derived Free IL-7) over time using a nonlinear mixed effects modelling approach. A target-mediated drug disposition model was used to fit the total IL-7 and total GSK3888130B assay concentration data to derive the free-IL-7 concentrations. Peak reduction relative to Baseline (Percent change) was calculated for each participant as; Peak reduction = (1 - minimum \[Free IL7/IL7 Baseline\])\*100. Baseline was defined as the latest pre-dose assessment.

Time frame: Baseline (Day 1) and up to 8 hours

Population: Pharmacodynamic (PD) Population consisted of all participants in the Safety Population who had at least one post Baseline PD result. Placebo arms were combined as pre-specified in reporting and analysis plan. Zeros reported reflect measured data derived during analysis.

ArmMeasureValue (MEAN)Dispersion
PlaceboPercent Peak Reduction From Baseline in Derived Free Interleukin 7 (IL 7) in Blood0.0 Percent ChangeStandard Deviation 0
GSK3888130B Dose Level 1 IVPercent Peak Reduction From Baseline in Derived Free Interleukin 7 (IL 7) in Blood95.8 Percent ChangeStandard Deviation 1.5383
GSK3888130B Dose Level 2 IVPercent Peak Reduction From Baseline in Derived Free Interleukin 7 (IL 7) in Blood99.1 Percent ChangeStandard Deviation 0.2841
GSK3888130B Dose Level 3 SCPercent Peak Reduction From Baseline in Derived Free Interleukin 7 (IL 7) in Blood90.3 Percent ChangeStandard Deviation 4.2311
GSK3888130B Dose Level 4 IVPercent Peak Reduction From Baseline in Derived Free Interleukin 7 (IL 7) in Blood99.9 Percent ChangeStandard Deviation 0.0246
GSK3888130B Dose Level 5 SCPercent Peak Reduction From Baseline in Derived Free Interleukin 7 (IL 7) in Blood98.6 Percent ChangeStandard Deviation 0.8138
GSK3888130B Dose Level 6 IVPercent Peak Reduction From Baseline in Derived Free Interleukin 7 (IL 7) in Blood100 Percent ChangeStandard Deviation 0.0025
GSK3888130B Dose Level 7 IVPercent Peak Reduction From Baseline in Derived Free Interleukin 7 (IL 7) in Blood100 Percent ChangeStandard Deviation 0.0004
Secondary

Serum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous Administration

Blood samples were collected at indicated time points for measurement of serum concentrations of GSK3888130B following intravenous administration. Pharmacokinetic (PK) Population consisted of all participants in the Safety analysis set who had received an active study intervention and had at least 1 non-missing post dose PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).

Time frame: Day 1: Pre-dose, 15 minutes, 30 minutes, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85

Population: PK Population. Only those participants who were measured and analyzed (i.e., contributed data reported in the table) were included in the 'Overall Number of Participants Analyzed' field. 'Number Analyzed' signifies participants evaluable for the specified time points.

ArmMeasureGroupValue (GEOMETRIC_MEAN)
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 29NA Nanograms per milliliter (ng/mL)
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 10NA Nanograms per milliliter (ng/mL)
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1 (Pre-dose)NA Nanograms per milliliter (ng/mL)
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1 (12 Hours)758.1 Nanograms per milliliter (ng/mL)
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1 (24 Hours)720.8 Nanograms per milliliter (ng/mL)
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 57NA Nanograms per milliliter (ng/mL)
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1 (15 Minutes)363.2 Nanograms per milliliter (ng/mL)
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1 (48 Hours)572.8 Nanograms per milliliter (ng/mL)
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 21NA Nanograms per milliliter (ng/mL)
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1 (8 Hours)753.5 Nanograms per milliliter (ng/mL)
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 6NA Nanograms per milliliter (ng/mL)
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 85NA Nanograms per milliliter (ng/mL)
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 15NA Nanograms per milliliter (ng/mL)
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 8NA Nanograms per milliliter (ng/mL)
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1 (30 Minutes)893.1 Nanograms per milliliter (ng/mL)
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1 (4 Hours)761.4 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 101850.1 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 151539.6 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 211263.0 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 291027.3 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 57625.4 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 85NA Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1 (4 Hours)4497.0 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1 (8 Hours)3964.2 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1 (Pre-dose)NA Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1 (12 Hours)3599.9 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1 (24 Hours)3781.5 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1 (48 Hours)3184.0 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1 (15 Minutes)2155.9 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 62134.0 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 81862.5 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1 (30 Minutes)4717.5 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 2 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 851797.5 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 2 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1 (Pre-dose)NA Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 2 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1 (15 Minutes)15901.1 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 2 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1 (30 Minutes)35633.0 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 2 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1 (4 Hours)32762.8 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 2 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1 (8 Hours)31180.8 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 2 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1 (12 Hours)29821.8 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 2 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1 (24 Hours)28096.6 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 2 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1 (48 Hours)23358.3 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 2 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 615978.7 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 2 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 814071.9 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 2 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1012873.0 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 2 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 1510293.7 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 2 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 218485.9 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 2 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 296904.9 Nanograms per milliliter (ng/mL)
GSK3888130B Dose Level 2 IVSerum Concentrations of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous AdministrationDAY 573545.2 Nanograms per milliliter (ng/mL)
Secondary

Serum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous Administration

Blood samples were collected at indicated time points for measurement of serum concentrations of GSK3888130B following subcutaneous administration.

Time frame: Day 1: Pre-dose, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85

Population: Pharmacokinetic Population consisted of all participants in the Safety analysis set who had received an active study intervention and had at least 1 non-missing post dose PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).

ArmMeasureGroupValue (GEOMETRIC_MEAN)
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 1 (Pre-dose)NA ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 1 (4 Hours)NA ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 1 (8 Hours)NA ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 1 (12 Hours)NA ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 1 (24 Hours)1284.2 ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 1 (48 Hours)2297.0 ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 63253.7 ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 83327.1 ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 103078.4 ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 152814.4 ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 212856.1 ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 292266.1 ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 571288.8 ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 85NA ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 2127433.3 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 1 (Pre-dose)NA ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 834801.7 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 1 (4 Hours)2540.4 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 5711567.5 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 1 (8 Hours)5287.2 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 1033654.8 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 1 (12 Hours)8236.8 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 2921108.5 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 1 (24 Hours)14161.9 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 1529870.9 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 1 (48 Hours)23239.0 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 855780.9 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 3 and 5 Subcutaneous AdministrationDAY 634612.8 ng/mL
Secondary

Serum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV Administration

Blood samples were collected at indicated time points for measurement of serum concentrations of GSK3888130B following intravenous administration. Pharmacokinetic (PK) Population consisted of all participants in the Safety analysis set who had received an active study intervention and had at least 1 non-missing post dose PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).

Time frame: Day 1: Pre-dose, 30 minutes, 1 hour, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85

Population: Pharmacokinetic (PK) Population. Only those participants who were measured and analyzed (i.e., contributed data reported in the table) were included in the 'Overall Number of Participants Analyzed' field. 'Number Analyzed' signifies participants evaluable for the specified time points.

ArmMeasureGroupValue (GEOMETRIC_MEAN)
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 1 (Pre-dose)NA ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 6186043.0 ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 1 (8 Hours)333669.5 ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 8148716.7 ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 1 (1 Hour)365002.7 ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 10150354.6 ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 1 (12 Hours)312692.1 ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 15124163.7 ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 1 (30 Minutes)201271.5 ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 21108208.1 ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 1 (24 Hours)288550.5 ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 2988424.1 ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 5734733.0 ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 1 (4 Hours)334755.7 ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 8516634.1 ng/mL
PlaceboSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 1 (48 Hours)221884.4 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 8553029.2 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 1 (Pre-dose)NA ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 1 (30 Minutes)446824.2 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 1 (1 Hour)887258.7 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 1 (4 Hours)845654.2 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 1 (8 Hours)839439.2 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 1 (12 Hours)738220.9 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 1 (24 Hours)744312.7 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 1 (48 Hours)595269.2 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 6432475.7 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 8362540.8 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 10361427.9 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 15311912.7 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 21259786.4 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 57100288.2 ng/mL
GSK3888130B Dose Level 1 IVSerum Concentrations of GSK3888130B for Dose Levels 6 and 7 IV AdministrationDAY 29207998.2 ng/mL
Secondary

t1/2 of GSK3888130B for Dose Levels 3 and 5 Subcutaneous Administration

Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following subcutaneous administration.

Time frame: Day 1: Pre-dose, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85

Population: Pharmacokinetic Population consisted of all participants in the Safety analysis set who had received an active study intervention and had at least 1 non-missing post dose PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Placebot1/2 of GSK3888130B for Dose Levels 3 and 5 Subcutaneous Administration784.05 HourGeometric Coefficient of Variation 13.62
GSK3888130B Dose Level 1 IVt1/2 of GSK3888130B for Dose Levels 3 and 5 Subcutaneous Administration749.02 HourGeometric Coefficient of Variation 31.55
Secondary

t1/2 of GSK3888130B for Dose Levels 6 and 7 Intravenous Administration

Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following intravenous administration.

Time frame: Day 1: Pre-dose, 30 minutes, 1 hour, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85

Population: Pharmacokinetic Population consisted of all participants in the Safety analysis set who had received an active study intervention and had at least 1 non-missing post dose PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Placebot1/2 of GSK3888130B for Dose Levels 6 and 7 Intravenous Administration563.53 HourGeometric Coefficient of Variation 22.12
GSK3888130B Dose Level 1 IVt1/2 of GSK3888130B for Dose Levels 6 and 7 Intravenous Administration628.91 HourGeometric Coefficient of Variation 13.71
Secondary

Time to Cmax (Tmax) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous Administration

Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following intravenous administration.

Time frame: Day 1: Pre-dose, 15 minutes, 30 minutes, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85

Population: Pharmacokinetic Population consisted of all participants in the Safety analysis set who had received an active study intervention and had at least 1 non-missing post dose PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).

ArmMeasureValue (MEDIAN)
PlaceboTime to Cmax (Tmax) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous Administration0.583 Hour
GSK3888130B Dose Level 1 IVTime to Cmax (Tmax) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous Administration0.550 Hour
GSK3888130B Dose Level 2 IVTime to Cmax (Tmax) of GSK3888130B for Dose Levels 1, 2 and 4 Intravenous Administration0.558 Hour
Secondary

Tmax of GSK3888130B for Dose Levels 3 and 5 Subcutaneous Administration

Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following subcutaneous administration.

Time frame: Day 1: Pre-dose, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85

Population: Pharmacokinetic Population consisted of all participants in the Safety analysis set who had received an active study intervention and had at least 1 non-missing post dose PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).

ArmMeasureValue (MEDIAN)
PlaceboTmax of GSK3888130B for Dose Levels 3 and 5 Subcutaneous Administration168.000 Hour
GSK3888130B Dose Level 1 IVTmax of GSK3888130B for Dose Levels 3 and 5 Subcutaneous Administration143.475 Hour
Secondary

Tmax of GSK3888130B for Dose Levels 6 and 7 Intravenous Administration

Blood samples were collected at indicated time points for pharmacokinetic analysis of GSK3888130B following intravenous administration.

Time frame: Day 1: Pre-dose, 30 minutes, 1 hour, 4, 8, 12, 24, 48 hours; Days 6, 8, 10, 15, 21, 29, 57, and 85

Population: Pharmacokinetic Population consisted of all participants in the Safety analysis set who had received an active study intervention and had at least 1 non-missing post dose PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).

ArmMeasureValue (MEDIAN)
PlaceboTmax of GSK3888130B for Dose Levels 6 and 7 Intravenous Administration1.083 Hour
GSK3888130B Dose Level 1 IVTmax of GSK3888130B for Dose Levels 6 and 7 Intravenous Administration2.533 Hour

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026