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Phase 1, Single and Repeat Dose Study to Assess Safety, Tolerability, and Pharmacokinetics (PK) of GSK3923868 in Participants With Chronic Obstructive Pulmonary Disease (COPD)

A Randomized, Double-blind, Placebo Controlled, Single and Repeat Dose Study to Assess the Safety, Tolerability, and Pharmacokinetics of Inhaled GSK3923868 in Participants With Chronic Obstructive Pulmonary Disease (COPD)

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05677347
Enrollment
12
Registered
2023-01-10
Start date
2023-01-23
Completion date
2023-07-20
Last updated
2024-10-15

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

Conditions

Pulmonary Disease, Chronic Obstructive

Keywords

Single ascending dose, Repeat dose, Phosphatidylinositol 4-kinase beta (PI4KB) inhibitor, Chronic Obstructive Pulmonary Disease (COPD)

Brief summary

This is a two parts study, a single ascending dose followed by 14-days repeat dosing. The single ascending dose part will assess two dose levels of GSK3923868 or placebo across two treatment periods 1 and 2 in a single cohort of participants with a washout period of a minimum of 5 days after each treatment periods. The repeat dose part will assess repeated one dose level of GSK3923868 or placebo in treatment period 3 with up to 14 days of follow up in the same cohort of participants. The duration of study participation for treatment period 1, 2 and 3 will be 6, 6 and up to 29 days (including follow up), respectively.

Interventions

GSK3923868 will be administered

DRUGPlacebo

Placebo will be administered

Sponsors

GlaxoSmithKline
Lead SponsorINDUSTRY

Study design

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

Masking description

The participants and investigators will be blinded.

Intervention model description

The same cohort of participants will move from Part 1 (single ascending doses treatment periods 1 and 2) to Part 2 (repeat dose treatment period 3)

Eligibility

Sex/Gender
ALL
Age
40 Years to 70 Years
Healthy volunteers
No

Inclusion criteria

* Between 40 and 70 years of age. * Confirmed diagnosis of COPD for greater than (\>) 6 months. * Participant is a smoker or an ex-smoker with a smoking history of at least 10 pack years. * A female participant is eligible to participate if she is not pregnant or breastfeeding and agrees to use contraceptives during the study (for women of childbearing potential only).

Exclusion criteria

* Participant has poorly controlled or unstable COPD. * Participant has a past or current medical condition(s) or disease(s) that is/are not well controlled. * Participant has had a respiratory tract infection treated with antibiotics within 4 weeks prior to screening. * Participant requires regular treatment with oral corticosteroids or has received a course of oral or parenteral corticosteroids within 4 weeks prior to screening. * Participant requires long-term oxygen therapy. * Current enrolment or past participation in a clinical trial within 30 days before this study starts. * Positive tests for human immunodeficiency virus (HIV), hepatitis B and C, or Coronavirus disease-19 (COVID-19). * Positive pre-study drug (except for as results of opioids prescribed for medical reasons and/or inadvertent consumption of poppy seeds) /alcohol screening result.

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Clinically Significant Changes in Spirometry Measurements Following Repeat Dose of GSK3923868Up to 29 daysSpirometry included forced expiratory volume in 1 second (FEV1) for lung function assessment. FEV1 is an important measure of pulmonary function and is the maximum amount of air that can be forced out in one second after taking a deep breath. Spirometry assessments were performed in triplicate with the highest value reported. Number of participants with clinically significant changes in spirometry measurements were reported. Clinical significance was determined by the investigator.
Number of Participants With Non-SAEs and SAEs Following Repeat Dose of GSK3923868Up to 29 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 untoward medical occurrence 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. Adverse events which were not serious, were considered as non-serious adverse events.
Number of Participants With Clinically Significant Changes in Hematology and Clinical Chemistry Laboratory Parameters Following Single Dose of GSK3923868Up to 18 daysThe laboratory measurements included hematology and clinical chemistry. The parameters evaluated were Basophil, Eosinophil, Erythrocyte Mean Corpuscular Hemoglobin, Erythrocyte Mean Corpuscular Volume, Erythrocytes, Hematocrit, Hemoglobin, Lymphocyte, Monocyte, Neutrophils, Platelets and Reticulocytes, Alanine Aminotransferase, Albumin, Alkaline phosphatase, Aspartate Aminotransferase, Bilirubin, Calcium, Creatinine, Direct Bilirubin, Glucose, Potassium, Sodium and Urea. Number of participants with clinically significant changes in hematology and clinical chemistry and were reported. Clinical significance was determined by the investigator.
Number of Participants With Clinically Significant Changes in Hematology and Clinical Chemistry Laboratory Parameters Following Repeat Dose of GSK3923868Up to 29 daysThe laboratory measurements included hematology and clinical chemistry. The parameters evaluated were Basophil, Eosinophil, Erythrocyte Mean Corpuscular Hemoglobin, Erythrocyte Mean Corpuscular Volume, Erythrocytes, Hematocrit, Hemoglobin, Lymphocyte, Monocyte, Neutrophils, Platelets and Reticulocytes, Alanine Aminotransferase, Albumin, Alkaline phosphatase, Aspartate Aminotransferase, Bilirubin, Calcium, Creatinine, Direct Bilirubin, Glucose, Potassium, Sodium and Urea. Number of participants with clinically significant changes in hematology and clinical chemistry and were reported. Clinical significance was determined by the investigator.
Number of Participants With Clinically Significant Changes in Urinalysis Parameters Following Repeat Dose of GSK3923868Up to 29 daysUrine samples were collected at indicated time points for the analysis of urinalysis parameters including specific gravity, potential of hydrogen (pH) of urine, presence of glucose, protein, erythrocytes, ketones, bilirubin, urobilinogen, nitrite, leukocyte esterase in urine by dipstick. Number of participants with clinically significant changes in urinalysis parameters were reported. Clinical significance was determined by the investigator.
Number of Participants With Clinically Significant Changes in Vital Signs and 12-lead Electrocardiogram (ECG) Findings Following Single Dose of GSK3923868Up to 18 daysVital signs included systolic and diastolic blood pressure, pulse rate and respiratory rate were measured with the participant in semi-supine position after at least 10 minutes rest. Tympanic Temperature was also measured as a vital sign but did not require positioning or rest prior to measuring. Twelve-lead electrocardiogram were performed in a semi-supine position after at least 10 minutes rest using an ECG machine that automatically calculates the heart rate and measures PR interval, QRS duration, QT and corrected QT intervals (QTc) intervals. Number of participants with clinically significant changes in vital signs and ECG parameters were reported. Clinical significance was determined by the investigator.
Number of Participants With Clinically Significant Changes in Vital Signs and 12-lead Electrocardiogram (ECG) Findings Following Repeat Dose of GSK3923868Up to 29 daysVital signs included systolic and diastolic blood pressure, pulse rate and respiratory rate were measured with the participant in semi-supine position after at least 10 minutes rest. Tympanic Temperature was also measured as a vital sign but did not require positioning or rest prior to measuring. Twelve-lead electrocardiogram were performed in a semi-supine position after at least 10 minutes rest using an ECG machine that automatically calculates the heart rate and measures PR interval, QRS duration, QT and corrected QT intervals (QTc) intervals. Number of participants with clinically significant changes in vital signs and ECG parameters were reported. Clinical significance was determined by the investigator.
Number of Participants With Clinically Significant Changes in Spirometry Measurements Following Single Dose of GSK3923868Up to 18 daysSpirometry included forced expiratory volume in 1 second (FEV1) for lung function assessment. FEV1 is an important measure of pulmonary function and is the maximum amount of air that can be forced out in one second after taking a deep breath. Spirometry assessments were performed in triplicate with the highest value reported. Number of participants with clinically significant changes in spirometry measurements were reported. Clinical significance was determined by the investigator.
Number of Participants With Non-serious Adverse Events (Non-SAEs) and Serious Adverse Events (SAEs) Following Single Dose of GSK3923868Up to 18 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 untoward medical occurrence 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. Adverse events which were not serious, were considered as non-serious adverse events.

Secondary

MeasureTime frameDescription
Area Under the Plasma-concentration Time Curve From Time Zero (Pre-dose) to Time of the Last Quantifiable Concentration (AUC[0-t]) of GSK3923868 for Single DosePre-dose and 5, 15, 30, 45 minutes, 1, 2, 4, 6, 24 hours post-dose on Day 1 in Treatment Periods 1 and 2Blood samples were collected at the indicated time points for PK analysis of GSK3923868. Area under the concentration-time curve from time zero to the time of the last quantifiable concentration values were reported.
Area Under the Plasma-concentration Time Curve From Time Zero (Pre-dose) to 6 Hours (AUC [0-6]) of GSK3923868 for Repeat DosePre-dose and 5, 15, 30, 45 minutes, 1, 2, 4, 6 hours post-dose on Day 1 and Day 14 in Treatment Period 3Blood samples were collected at the indicated time points for pharmacokinetic (PK) analysis of GSK3923868. Pharmacokinetic analysis was conducted using standard non-compartmental method with WinNonlin.
Maximum Observed Plasma Concentration (Cmax) of GSK3923868 for Single DosePre-dose and 5, 15, 30, 45 minutes, 1, 2, 4, 6, 24 hours post-dose on Day 1 in Treatment Periods 1 and 2Blood samples were collected at the indicated time points for pharmacokinetic (PK) analysis of GSK3923868. Pharmacokinetic analysis was conducted using standard non-compartmental method with WinNonlin.
Time to Reach Cmax (Tmax) of GSK3923868 for Single DosePre-dose and 5, 15, 30, 45 minutes, 1, 2, 4, 6, 24 hours post-dose on Day 1 in Treatment Periods 1 and 2Blood samples were collected at the indicated time points for analysis of tmax of GSK3923868. The tmax was obtained directly from the concentration-time data. The tmax was analyzed with the non-compartmental methods with WinNonlin.
Cmax of GSK3923868 for Repeat DosePre-dose and 5, 15, 30, 45 minutes, 1, 2, 4, 6 hours post-dose on Day 1 and Day 14 in Treatment Period 3Blood samples were collected at the indicated time points for pharmacokinetic (PK) analysis of GSK3923868. Pharmacokinetic analysis was conducted using standard non-compartmental method with WinNonlin.
Tmax of GSK3923868 for Repeat DosePre-dose and 5, 15, 30, 45 minutes, 1, 2, 4, 6 hours post-dose on Day 1 and Day 14 in Treatment Period 3Blood samples were collected at the indicated time points for analysis of tmax of GSK3923868. The tmax was obtained directly from the concentration-time data. The tmax was analyzed with the non-compartmental methods with WinNonlin.
Area Under the Plasma-concentration Time Curve From Time Zero (Pre-dose) to 24 Hours (AUC [0-24]) of GSK3923868 for Single DosePre-dose and 5, 15, 30, 45 minutes, 1, 2, 4, 6, 24 hours post-dose on Day 1 in Treatment Periods 1 and 2Blood samples were collected at the indicated time points for pharmacokinetic (PK) analysis of GSK3923868. Pharmacokinetic analysis was conducted using standard non-compartmental method with WinNonlin.

Countries

Germany

Participant flow

Pre-assignment details

All the 12 participants were enrolled and randomized in the study.

Participants by arm

ArmCount
GSK3923868 500 mcg SD/Placebo SD/GSK3923868 1500 mcg RD
Eligible participants received a single dose (SD) of GSK3923868 500 microgram (mcg) in Treatment Period 1 followed by a single dose of placebo matching GSK3923868 in Treatment Period 2. Participants also received a repeat dose (RD) of GSK3923868 1500 mcg in Treatment Period 3. There was a washout period between each treatment period. Participants had a follow-up of 14 days after the last dose of GSK3923868.
3
GSK3923868 500 mcg SD/GSK3923868 1000 mcg SD/Placebo RD
Eligible participants received a single dose of GSK3923868 500 mcg in Treatment Period 1 followed by GSK3923868 1000 mcg in Treatment Period 2. Participants also received a repeat dose of placebo matching GSK3923868 in Treatment Period 3. There was a washout period between each treatment period. Participants had a follow-up of 14 days after the last dose of GSK3923868.
3
GSK3923868 500 mcg SD/GSK3923868 1000 mcg SD/GSK3923868 1500 mcg RD
Eligible participants received a single dose of GSK3923868 500 mcg in Treatment Period 1 followed by GSK3923868 1000 mcg in Treatment Period 2. Participants also received repeat dose of GSK3923868 1500 mcg in Treatment Period 3. There was a washout period between each treatment period. Participants had a follow-up of 14 days after the last dose of GSK3923868.
3
Placebo SD/GSK3923868 1000 mcg SD/GSK3923868 1500 mcg RD
Eligible participants received a single dose of placebo matching GSK3923868 in Treatment Period 1 followed by GSK3923868 1000 mcg in Treatment Period 2. Participants also received a repeat dose of GSK3923868 1500 mcg in Treatment Period 3. There was a washout period between each treatment period. Participants had a follow-up of 14 days after the last dose of GSK3923868.
3
Total12

Baseline characteristics

CharacteristicGSK3923868 500 mcg SD/Placebo SD/GSK3923868 1500 mcg RDGSK3923868 500 mcg SD/GSK3923868 1000 mcg SD/Placebo RDGSK3923868 500 mcg SD/GSK3923868 1000 mcg SD/GSK3923868 1500 mcg RDPlacebo SD/GSK3923868 1000 mcg SD/GSK3923868 1500 mcg RDTotal
Age, Continuous67.7 YEARS
STANDARD_DEVIATION 2.31
59.3 YEARS
STANDARD_DEVIATION 5.69
63.3 YEARS
STANDARD_DEVIATION 7.23
68.0 YEARS
STANDARD_DEVIATION 1
64.6 YEARS
STANDARD_DEVIATION 5.5
Race/Ethnicity, Customized
De-identified
3 Participants3 Participants3 Participants3 Participants12 Participants
Sex/Gender, Customized
De-identified
3 Participants3 Participants3 Participants3 Participants12 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
deaths
Total, all-cause mortality
0 / 60 / 90 / 90 / 30 / 9
other
Total, other adverse events
1 / 62 / 91 / 92 / 34 / 9
serious
Total, serious adverse events
0 / 60 / 90 / 90 / 30 / 9

Outcome results

Primary

Number of Participants With Clinically Significant Changes in Hematology and Clinical Chemistry Laboratory Parameters Following Repeat Dose of GSK3923868

The laboratory measurements included hematology and clinical chemistry. The parameters evaluated were Basophil, Eosinophil, Erythrocyte Mean Corpuscular Hemoglobin, Erythrocyte Mean Corpuscular Volume, Erythrocytes, Hematocrit, Hemoglobin, Lymphocyte, Monocyte, Neutrophils, Platelets and Reticulocytes, Alanine Aminotransferase, Albumin, Alkaline phosphatase, Aspartate Aminotransferase, Bilirubin, Calcium, Creatinine, Direct Bilirubin, Glucose, Potassium, Sodium and Urea. Number of participants with clinically significant changes in hematology and clinical chemistry and were reported. Clinical significance was determined by the investigator.

Time frame: Up to 29 days

Population: This analysis was performed on Safety Population which included all participants who received at least 1 dose of study treatment.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Placebo SDNumber of Participants With Clinically Significant Changes in Hematology and Clinical Chemistry Laboratory Parameters Following Repeat Dose of GSK3923868Hematology0 Participants
Placebo SDNumber of Participants With Clinically Significant Changes in Hematology and Clinical Chemistry Laboratory Parameters Following Repeat Dose of GSK3923868Clinical Chemistry0 Participants
GSK3923868 500 mcg SDNumber of Participants With Clinically Significant Changes in Hematology and Clinical Chemistry Laboratory Parameters Following Repeat Dose of GSK3923868Hematology0 Participants
GSK3923868 500 mcg SDNumber of Participants With Clinically Significant Changes in Hematology and Clinical Chemistry Laboratory Parameters Following Repeat Dose of GSK3923868Clinical Chemistry0 Participants
Primary

Number of Participants With Clinically Significant Changes in Hematology and Clinical Chemistry Laboratory Parameters Following Single Dose of GSK3923868

The laboratory measurements included hematology and clinical chemistry. The parameters evaluated were Basophil, Eosinophil, Erythrocyte Mean Corpuscular Hemoglobin, Erythrocyte Mean Corpuscular Volume, Erythrocytes, Hematocrit, Hemoglobin, Lymphocyte, Monocyte, Neutrophils, Platelets and Reticulocytes, Alanine Aminotransferase, Albumin, Alkaline phosphatase, Aspartate Aminotransferase, Bilirubin, Calcium, Creatinine, Direct Bilirubin, Glucose, Potassium, Sodium and Urea. Number of participants with clinically significant changes in hematology and clinical chemistry and were reported. Clinical significance was determined by the investigator.

Time frame: Up to 18 days

Population: This analysis was performed on Safety Population which included all participants who received at least 1 dose of study treatment.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Placebo SDNumber of Participants With Clinically Significant Changes in Hematology and Clinical Chemistry Laboratory Parameters Following Single Dose of GSK3923868Hematology0 Participants
Placebo SDNumber of Participants With Clinically Significant Changes in Hematology and Clinical Chemistry Laboratory Parameters Following Single Dose of GSK3923868Clinical Chemistry0 Participants
GSK3923868 500 mcg SDNumber of Participants With Clinically Significant Changes in Hematology and Clinical Chemistry Laboratory Parameters Following Single Dose of GSK3923868Hematology0 Participants
GSK3923868 500 mcg SDNumber of Participants With Clinically Significant Changes in Hematology and Clinical Chemistry Laboratory Parameters Following Single Dose of GSK3923868Clinical Chemistry0 Participants
GSK3923868 1000 mcg SDNumber of Participants With Clinically Significant Changes in Hematology and Clinical Chemistry Laboratory Parameters Following Single Dose of GSK3923868Hematology0 Participants
GSK3923868 1000 mcg SDNumber of Participants With Clinically Significant Changes in Hematology and Clinical Chemistry Laboratory Parameters Following Single Dose of GSK3923868Clinical Chemistry0 Participants
Primary

Number of Participants With Clinically Significant Changes in Spirometry Measurements Following Repeat Dose of GSK3923868

Spirometry included forced expiratory volume in 1 second (FEV1) for lung function assessment. FEV1 is an important measure of pulmonary function and is the maximum amount of air that can be forced out in one second after taking a deep breath. Spirometry assessments were performed in triplicate with the highest value reported. Number of participants with clinically significant changes in spirometry measurements were reported. Clinical significance was determined by the investigator.

Time frame: Up to 29 days

Population: This analysis was performed on Safety Population which included all participants who received at least 1 dose of study treatment.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Placebo SDNumber of Participants With Clinically Significant Changes in Spirometry Measurements Following Repeat Dose of GSK39238680 Participants
GSK3923868 500 mcg SDNumber of Participants With Clinically Significant Changes in Spirometry Measurements Following Repeat Dose of GSK39238680 Participants
Primary

Number of Participants With Clinically Significant Changes in Spirometry Measurements Following Single Dose of GSK3923868

Spirometry included forced expiratory volume in 1 second (FEV1) for lung function assessment. FEV1 is an important measure of pulmonary function and is the maximum amount of air that can be forced out in one second after taking a deep breath. Spirometry assessments were performed in triplicate with the highest value reported. Number of participants with clinically significant changes in spirometry measurements were reported. Clinical significance was determined by the investigator.

Time frame: Up to 18 days

Population: This analysis was performed on Safety Population which included all participants who received at least 1 dose of study treatment.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Placebo SDNumber of Participants With Clinically Significant Changes in Spirometry Measurements Following Single Dose of GSK39238680 Participants
GSK3923868 500 mcg SDNumber of Participants With Clinically Significant Changes in Spirometry Measurements Following Single Dose of GSK39238680 Participants
GSK3923868 1000 mcg SDNumber of Participants With Clinically Significant Changes in Spirometry Measurements Following Single Dose of GSK39238680 Participants
Primary

Number of Participants With Clinically Significant Changes in Urinalysis Parameters Following Repeat Dose of GSK3923868

Urine samples were collected at indicated time points for the analysis of urinalysis parameters including specific gravity, potential of hydrogen (pH) of urine, presence of glucose, protein, erythrocytes, ketones, bilirubin, urobilinogen, nitrite, leukocyte esterase in urine by dipstick. Number of participants with clinically significant changes in urinalysis parameters were reported. Clinical significance was determined by the investigator.

Time frame: Up to 29 days

Population: This analysis was performed on Safety Population which included all participants who received at least 1 dose of study treatment.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Placebo SDNumber of Participants With Clinically Significant Changes in Urinalysis Parameters Following Repeat Dose of GSK39238680 Participants
GSK3923868 500 mcg SDNumber of Participants With Clinically Significant Changes in Urinalysis Parameters Following Repeat Dose of GSK39238680 Participants
Primary

Number of Participants With Clinically Significant Changes in Vital Signs and 12-lead Electrocardiogram (ECG) Findings Following Repeat Dose of GSK3923868

Vital signs included systolic and diastolic blood pressure, pulse rate and respiratory rate were measured with the participant in semi-supine position after at least 10 minutes rest. Tympanic Temperature was also measured as a vital sign but did not require positioning or rest prior to measuring. Twelve-lead electrocardiogram were performed in a semi-supine position after at least 10 minutes rest using an ECG machine that automatically calculates the heart rate and measures PR interval, QRS duration, QT and corrected QT intervals (QTc) intervals. Number of participants with clinically significant changes in vital signs and ECG parameters were reported. Clinical significance was determined by the investigator.

Time frame: Up to 29 days

Population: This analysis was performed on Safety Population which included all participants who received at least 1 dose of study treatment.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Placebo SDNumber of Participants With Clinically Significant Changes in Vital Signs and 12-lead Electrocardiogram (ECG) Findings Following Repeat Dose of GSK3923868Vital Signs0 Participants
Placebo SDNumber of Participants With Clinically Significant Changes in Vital Signs and 12-lead Electrocardiogram (ECG) Findings Following Repeat Dose of GSK392386812-Lead ECG0 Participants
GSK3923868 500 mcg SDNumber of Participants With Clinically Significant Changes in Vital Signs and 12-lead Electrocardiogram (ECG) Findings Following Repeat Dose of GSK3923868Vital Signs0 Participants
GSK3923868 500 mcg SDNumber of Participants With Clinically Significant Changes in Vital Signs and 12-lead Electrocardiogram (ECG) Findings Following Repeat Dose of GSK392386812-Lead ECG0 Participants
Primary

Number of Participants With Clinically Significant Changes in Vital Signs and 12-lead Electrocardiogram (ECG) Findings Following Single Dose of GSK3923868

Vital signs included systolic and diastolic blood pressure, pulse rate and respiratory rate were measured with the participant in semi-supine position after at least 10 minutes rest. Tympanic Temperature was also measured as a vital sign but did not require positioning or rest prior to measuring. Twelve-lead electrocardiogram were performed in a semi-supine position after at least 10 minutes rest using an ECG machine that automatically calculates the heart rate and measures PR interval, QRS duration, QT and corrected QT intervals (QTc) intervals. Number of participants with clinically significant changes in vital signs and ECG parameters were reported. Clinical significance was determined by the investigator.

Time frame: Up to 18 days

Population: This analysis was performed on Safety Population which included all participants who received at least 1 dose of study treatment.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Placebo SDNumber of Participants With Clinically Significant Changes in Vital Signs and 12-lead Electrocardiogram (ECG) Findings Following Single Dose of GSK3923868Vital Signs0 Participants
Placebo SDNumber of Participants With Clinically Significant Changes in Vital Signs and 12-lead Electrocardiogram (ECG) Findings Following Single Dose of GSK392386812-Lead ECG0 Participants
GSK3923868 500 mcg SDNumber of Participants With Clinically Significant Changes in Vital Signs and 12-lead Electrocardiogram (ECG) Findings Following Single Dose of GSK3923868Vital Signs0 Participants
GSK3923868 500 mcg SDNumber of Participants With Clinically Significant Changes in Vital Signs and 12-lead Electrocardiogram (ECG) Findings Following Single Dose of GSK392386812-Lead ECG0 Participants
GSK3923868 1000 mcg SDNumber of Participants With Clinically Significant Changes in Vital Signs and 12-lead Electrocardiogram (ECG) Findings Following Single Dose of GSK3923868Vital Signs0 Participants
GSK3923868 1000 mcg SDNumber of Participants With Clinically Significant Changes in Vital Signs and 12-lead Electrocardiogram (ECG) Findings Following Single Dose of GSK392386812-Lead ECG0 Participants
Primary

Number of Participants With Non-SAEs and SAEs Following Repeat Dose of GSK3923868

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 untoward medical occurrence 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. Adverse events which were not serious, were considered as non-serious adverse events.

Time frame: Up to 29 days

Population: This analysis was performed on Safety Population which included all participants who received at least 1 dose of study treatment.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Placebo SDNumber of Participants With Non-SAEs and SAEs Following Repeat Dose of GSK3923868SAE0 Participants
Placebo SDNumber of Participants With Non-SAEs and SAEs Following Repeat Dose of GSK3923868Non-SAE2 Participants
GSK3923868 500 mcg SDNumber of Participants With Non-SAEs and SAEs Following Repeat Dose of GSK3923868Non-SAE4 Participants
GSK3923868 500 mcg SDNumber of Participants With Non-SAEs and SAEs Following Repeat Dose of GSK3923868SAE0 Participants
Primary

Number of Participants With Non-serious Adverse Events (Non-SAEs) and Serious Adverse Events (SAEs) Following Single Dose of GSK3923868

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 untoward medical occurrence 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. Adverse events which were not serious, were considered as non-serious adverse events.

Time frame: Up to 18 days

Population: This analysis was performed on Safety Population which included all participants who received at least 1 dose of study treatment.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Placebo SDNumber of Participants With Non-serious Adverse Events (Non-SAEs) and Serious Adverse Events (SAEs) Following Single Dose of GSK3923868SAE0 Participants
Placebo SDNumber of Participants With Non-serious Adverse Events (Non-SAEs) and Serious Adverse Events (SAEs) Following Single Dose of GSK3923868Non-SAE1 Participants
GSK3923868 500 mcg SDNumber of Participants With Non-serious Adverse Events (Non-SAEs) and Serious Adverse Events (SAEs) Following Single Dose of GSK3923868Non-SAE2 Participants
GSK3923868 500 mcg SDNumber of Participants With Non-serious Adverse Events (Non-SAEs) and Serious Adverse Events (SAEs) Following Single Dose of GSK3923868SAE0 Participants
GSK3923868 1000 mcg SDNumber of Participants With Non-serious Adverse Events (Non-SAEs) and Serious Adverse Events (SAEs) Following Single Dose of GSK3923868Non-SAE1 Participants
GSK3923868 1000 mcg SDNumber of Participants With Non-serious Adverse Events (Non-SAEs) and Serious Adverse Events (SAEs) Following Single Dose of GSK3923868SAE0 Participants
Secondary

Area Under the Plasma-concentration Time Curve From Time Zero (Pre-dose) to 24 Hours (AUC [0-24]) of GSK3923868 for Single Dose

Blood samples were collected at the indicated time points for pharmacokinetic (PK) analysis of GSK3923868. Pharmacokinetic analysis was conducted using standard non-compartmental method with WinNonlin.

Time frame: Pre-dose and 5, 15, 30, 45 minutes, 1, 2, 4, 6, 24 hours post-dose on Day 1 in Treatment Periods 1 and 2

Population: This analysis was performed on Pharmacokinetic (PK) Population which included all randomized participants in the Safety Population who had at least 1 dose of GSK3923868 and at least 1 non-missing PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Placebo SDArea Under the Plasma-concentration Time Curve From Time Zero (Pre-dose) to 24 Hours (AUC [0-24]) of GSK3923868 for Single Dose23463.81 Hours* picograms per milliliterGeometric Coefficient of Variation 24.02
GSK3923868 500 mcg SDArea Under the Plasma-concentration Time Curve From Time Zero (Pre-dose) to 24 Hours (AUC [0-24]) of GSK3923868 for Single Dose46553.52 Hours* picograms per milliliterGeometric Coefficient of Variation 21.29
Secondary

Area Under the Plasma-concentration Time Curve From Time Zero (Pre-dose) to 6 Hours (AUC [0-6]) of GSK3923868 for Repeat Dose

Blood samples were collected at the indicated time points for pharmacokinetic (PK) analysis of GSK3923868. Pharmacokinetic analysis was conducted using standard non-compartmental method with WinNonlin.

Time frame: Pre-dose and 5, 15, 30, 45 minutes, 1, 2, 4, 6 hours post-dose on Day 1 and Day 14 in Treatment Period 3

Population: This analysis was performed on PK Population which included all randomized participants in Safety Population who had at least 1 dose of GSK3923868 and at least 1 non-missing PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values). Only those participants who were measured and analyzed (i.e., contributed data reported in table) were included in 'Overall Number of Participants Analyzed' field. 'Number Analyzed' signifies participants evaluable for specified time points.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Placebo SDArea Under the Plasma-concentration Time Curve From Time Zero (Pre-dose) to 6 Hours (AUC [0-6]) of GSK3923868 for Repeat DoseDay 142593.74 Hours* picograms per milliliterGeometric Coefficient of Variation 19.93
Placebo SDArea Under the Plasma-concentration Time Curve From Time Zero (Pre-dose) to 6 Hours (AUC [0-6]) of GSK3923868 for Repeat DoseDay 1440787.96 Hours* picograms per milliliterGeometric Coefficient of Variation 12.96
Secondary

Area Under the Plasma-concentration Time Curve From Time Zero (Pre-dose) to Time of the Last Quantifiable Concentration (AUC[0-t]) of GSK3923868 for Single Dose

Blood samples were collected at the indicated time points for PK analysis of GSK3923868. Area under the concentration-time curve from time zero to the time of the last quantifiable concentration values were reported.

Time frame: Pre-dose and 5, 15, 30, 45 minutes, 1, 2, 4, 6, 24 hours post-dose on Day 1 in Treatment Periods 1 and 2

Population: This analysis was performed on PK Population which included all randomized participants in the Safety Population who had at least 1 dose of GSK3923868 and at least 1 non-missing PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Placebo SDArea Under the Plasma-concentration Time Curve From Time Zero (Pre-dose) to Time of the Last Quantifiable Concentration (AUC[0-t]) of GSK3923868 for Single Dose23443.19 Hours* picograms per milliliterGeometric Coefficient of Variation 23.96
GSK3923868 500 mcg SDArea Under the Plasma-concentration Time Curve From Time Zero (Pre-dose) to Time of the Last Quantifiable Concentration (AUC[0-t]) of GSK3923868 for Single Dose46519.91 Hours* picograms per milliliterGeometric Coefficient of Variation 21.28
Secondary

Cmax of GSK3923868 for Repeat Dose

Blood samples were collected at the indicated time points for pharmacokinetic (PK) analysis of GSK3923868. Pharmacokinetic analysis was conducted using standard non-compartmental method with WinNonlin.

Time frame: Pre-dose and 5, 15, 30, 45 minutes, 1, 2, 4, 6 hours post-dose on Day 1 and Day 14 in Treatment Period 3

Population: This analysis was performed on PK Population which included all randomized participants in the Safety Population who had at least 1 dose of GSK3923868 and at least 1 non-missing PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Placebo SDCmax of GSK3923868 for Repeat DoseDay 114081.13 Picograms per milliliterGeometric Coefficient of Variation 13.69
Placebo SDCmax of GSK3923868 for Repeat DoseDay 1413854.60 Picograms per milliliterGeometric Coefficient of Variation 25.57
Secondary

Maximum Observed Plasma Concentration (Cmax) of GSK3923868 for Single Dose

Blood samples were collected at the indicated time points for pharmacokinetic (PK) analysis of GSK3923868. Pharmacokinetic analysis was conducted using standard non-compartmental method with WinNonlin.

Time frame: Pre-dose and 5, 15, 30, 45 minutes, 1, 2, 4, 6, 24 hours post-dose on Day 1 in Treatment Periods 1 and 2

Population: This analysis was performed on PK Population which included all randomized participants in the Safety Population who had at least 1 dose of GSK3923868 and at least 1 non-missing PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Placebo SDMaximum Observed Plasma Concentration (Cmax) of GSK3923868 for Single Dose4823.19 Picograms per milliliterGeometric Coefficient of Variation 26.72
GSK3923868 500 mcg SDMaximum Observed Plasma Concentration (Cmax) of GSK3923868 for Single Dose10042.80 Picograms per milliliterGeometric Coefficient of Variation 11.93
Secondary

Time to Reach Cmax (Tmax) of GSK3923868 for Single Dose

Blood samples were collected at the indicated time points for analysis of tmax of GSK3923868. The tmax was obtained directly from the concentration-time data. The tmax was analyzed with the non-compartmental methods with WinNonlin.

Time frame: Pre-dose and 5, 15, 30, 45 minutes, 1, 2, 4, 6, 24 hours post-dose on Day 1 in Treatment Periods 1 and 2

Population: This analysis was performed on PK Population which included all randomized participants in the Safety Population who had at least 1 dose of GSK3923868 and at least 1 non-missing PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).

ArmMeasureValue (MEDIAN)
Placebo SDTime to Reach Cmax (Tmax) of GSK3923868 for Single Dose1.00 Hours
GSK3923868 500 mcg SDTime to Reach Cmax (Tmax) of GSK3923868 for Single Dose1.00 Hours
Secondary

Tmax of GSK3923868 for Repeat Dose

Blood samples were collected at the indicated time points for analysis of tmax of GSK3923868. The tmax was obtained directly from the concentration-time data. The tmax was analyzed with the non-compartmental methods with WinNonlin.

Time frame: Pre-dose and 5, 15, 30, 45 minutes, 1, 2, 4, 6 hours post-dose on Day 1 and Day 14 in Treatment Period 3

Population: This analysis was performed on PK Population which included all randomized participants in the Safety Population who had at least 1 dose of GSK3923868 and at least 1 non-missing PK assessment (Non-quantifiable \[NQ\] values were considered as non-missing values).

ArmMeasureGroupValue (MEDIAN)
Placebo SDTmax of GSK3923868 for Repeat DoseDay 10.95 Hours
Placebo SDTmax of GSK3923868 for Repeat DoseDay 141.00 Hours

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