Trial Outcomes & Findings for A Study to Investigate the Pharmacokinetics of a Combined Oral Contraceptive When Given Alone and in Combination With GSK3036656 in Female Participants of Non-childbearing Potential Aged 18 to 65 Years of Age (NCT NCT06354257)

NCT ID: NCT06354257

Last Updated: 2025-08-26

Results Overview

AUC(0-inf) is defined as the area under the concentration-time curve from time 0 extrapolated to infinity and was calculated by using a non-compartmental analysis.

Recruitment status

COMPLETED

Study phase

PHASE1

Target enrollment

20 participants

Primary outcome timeframe

At Day 1 for the Treatment Period 1: Microgynon Group and at Day 15 for the Treatment Period 3: Microgynon + GSK3036656 Group

Results posted on

2025-08-26

Participant Flow

The Combined Participants Group includes all participants from the 3 treatment periods combined. This group was used to summarize Participant Flow and Baseline Characteristics in the study.

Participant milestones

Participant milestones
Measure
Combined Participants Group
Participants received a dose of Microgynon \[0.03 mg Ethinyl Estradiol (EE)/0.15 mg Levonorgestrel (LNG)\] on Day 1 of Treatment Period 1. In Treatment Period 2, they received GSK3036656 40 mg on Day 4 followed by GSK3036656 20 mg once daily from Day 5 to Day 14. In Treatment Period 3, participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17.
Treatment Period 1
STARTED
20
Treatment Period 1
COMPLETED
19
Treatment Period 1
NOT COMPLETED
1
Treatment Period 2
STARTED
19
Treatment Period 2
COMPLETED
18
Treatment Period 2
NOT COMPLETED
1
Treatment Period 3
STARTED
18
Treatment Period 3
COMPLETED
18
Treatment Period 3
NOT COMPLETED
0

Reasons for withdrawal

Reasons for withdrawal
Measure
Combined Participants Group
Participants received a dose of Microgynon \[0.03 mg Ethinyl Estradiol (EE)/0.15 mg Levonorgestrel (LNG)\] on Day 1 of Treatment Period 1. In Treatment Period 2, they received GSK3036656 40 mg on Day 4 followed by GSK3036656 20 mg once daily from Day 5 to Day 14. In Treatment Period 3, participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17.
Treatment Period 1
Withdrawal by Subject
1
Treatment Period 2
Adverse Event
1

Baseline Characteristics

A Study to Investigate the Pharmacokinetics of a Combined Oral Contraceptive When Given Alone and in Combination With GSK3036656 in Female Participants of Non-childbearing Potential Aged 18 to 65 Years of Age

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Combined Participants Group
n=20 Participants
Participants received a dose of Microgynon \[0.03 mg Ethinyl Estradiol (EE)/0.15 mg Levonorgestrel (LNG)\] on Day 1 of Treatment Period 1. In Treatment Period 2, they received GSK3036656 40 mg on Day 4 followed by GSK3036656 20 mg once daily from Day 5 to Day 14. In Treatment Period 3, participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17.
Age, Continuous
53.6 YEARS
STANDARD_DEVIATION 5.64 • n=99 Participants
Sex: Female, Male
Female
20 Participants
n=99 Participants
Sex: Female, Male
Male
0 Participants
n=99 Participants
Race/Ethnicity, Customized
WHITE
20 Participants
n=99 Participants

PRIMARY outcome

Timeframe: At Day 1 for the Treatment Period 1: Microgynon Group and at Day 15 for the Treatment Period 3: Microgynon + GSK3036656 Group

Population: The analysis was performed on the Pharmacokinetic (PK) Set which includes all the participants from the Safety Set (SS) who had at least 1 non-missing PK assessment. This population is defined according to the treatment actually received by the participants and comprises only those with the specified PK parameter available for summary computation.

AUC(0-inf) is defined as the area under the concentration-time curve from time 0 extrapolated to infinity and was calculated by using a non-compartmental analysis.

Outcome measures

Outcome measures
Measure
Treatment Period 1: Microgynon Group
n=8 Participants
Participants received a single dose of Microgynon (0.03 mg EE/0.15 mg LNG) on Day 1 of Treatment Period 1.
Treatment Period 3: Microgynon + GSK3036656 Group
n=9 Participants
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Treatment Period 3: Microgynon + GSK3036656 Group
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Area Under the Plasma Drug Concentration (AUC) From Time Zero Extrapolated to Infinity (AUC[0-inf]) After a Single Dose of EE and LNG
EE, Day 1
627.11 hour*picogram per milliliter (h*pg/mL)
Geometric Coefficient of Variation 53.0
Area Under the Plasma Drug Concentration (AUC) From Time Zero Extrapolated to Infinity (AUC[0-inf]) After a Single Dose of EE and LNG
EE, Day 15
552.01 hour*picogram per milliliter (h*pg/mL)
Geometric Coefficient of Variation 51.0
Area Under the Plasma Drug Concentration (AUC) From Time Zero Extrapolated to Infinity (AUC[0-inf]) After a Single Dose of EE and LNG
LNG, Day 1
24651.76 hour*picogram per milliliter (h*pg/mL)
Geometric Coefficient of Variation 113.2
Area Under the Plasma Drug Concentration (AUC) From Time Zero Extrapolated to Infinity (AUC[0-inf]) After a Single Dose of EE and LNG
LNG, Day 15
30334.48 hour*picogram per milliliter (h*pg/mL)
Geometric Coefficient of Variation 94.2

PRIMARY outcome

Timeframe: At Day 1 for the Treatment Period 1: Microgynon Group and at Day 15 for the Treatment Period 3: Microgynon + GSK3036656 Group

Population: The analysis was performed on the PK Set which includes all the participants from the SS who had at least 1 non-missing PK assessment. This population is defined according to the treatment actually received by the participants and comprises only those with the specified PK parameter available for summary computation.

Cmax is defined as the maximum observed plasma concentration determined directly from the concentration-time data and was calculated by using a non-compartmental analysis.

Outcome measures

Outcome measures
Measure
Treatment Period 1: Microgynon Group
n=19 Participants
Participants received a single dose of Microgynon (0.03 mg EE/0.15 mg LNG) on Day 1 of Treatment Period 1.
Treatment Period 3: Microgynon + GSK3036656 Group
n=18 Participants
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Treatment Period 3: Microgynon + GSK3036656 Group
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Maximum Observed Plasma Concentration (Cmax) After a Single Dose of EE and LNG
EE, Day 1
50.86 picogram per milliliter (pg/mL)
Geometric Coefficient of Variation 32.7
Maximum Observed Plasma Concentration (Cmax) After a Single Dose of EE and LNG
EE, Day 15
48.96 picogram per milliliter (pg/mL)
Geometric Coefficient of Variation 24.5
Maximum Observed Plasma Concentration (Cmax) After a Single Dose of EE and LNG
LNG, Day 1
2599.85 picogram per milliliter (pg/mL)
Geometric Coefficient of Variation 46.8
Maximum Observed Plasma Concentration (Cmax) After a Single Dose of EE and LNG
LNG, Day 15
2828.17 picogram per milliliter (pg/mL)
Geometric Coefficient of Variation 45.3

SECONDARY outcome

Timeframe: At Day 15

Population: The analysis was performed on the PK Set which includes all the participants from the SS who had at least 1 non-missing PK assessment. This population is defined according to the treatment actually received by the participants and comprises only those with the specified PK parameter available for summary computation.

AUC(0-tau) is defined as the area under the concentration-time curve over a dosing interval and was calculated by using a non-compartmental analysis.

Outcome measures

Outcome measures
Measure
Treatment Period 1: Microgynon Group
n=18 Participants
Participants received a single dose of Microgynon (0.03 mg EE/0.15 mg LNG) on Day 1 of Treatment Period 1.
Treatment Period 3: Microgynon + GSK3036656 Group
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Treatment Period 3: Microgynon + GSK3036656 Group
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
AUC Versus Time Curve From Time Zero During a Dosage Interval of Time at Steady State [AUC(0-tau)] of GSK3036656 With EE/LNG
8372.42 hour*nanogram per milliliter (h*ng/mL)
Geometric Coefficient of Variation 18.8

SECONDARY outcome

Timeframe: At Day 15

Population: The analysis was performed on the PK Set which includes all the participants from the SS who had at least 1 non-missing PK assessment. This population is defined according to the treatment actually received by the participants and comprises only those with the specified PK parameter available for summary computation.

Cmax is defined as the maximum observed plasma concentration determined directly from the concentration-time data and was calculated by using a non-compartmental analysis.

Outcome measures

Outcome measures
Measure
Treatment Period 1: Microgynon Group
n=18 Participants
Participants received a single dose of Microgynon (0.03 mg EE/0.15 mg LNG) on Day 1 of Treatment Period 1.
Treatment Period 3: Microgynon + GSK3036656 Group
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Treatment Period 3: Microgynon + GSK3036656 Group
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Cmax at Steady State of GSK3036656 With EE/LNG
600.62 nanogram per milliliter (ng/mL)
Geometric Coefficient of Variation 14.2

SECONDARY outcome

Timeframe: At Day 8, 10, 12, 15 and 16

Population: The analysis was performed on the PK Set which includes all the participants from the SS who had at least 1 non-missing PK assessment. This population is defined according to the treatment actually received by the participants and comprises only those with the specified PK parameter available for summary computation.

Ctau is defined as the concentration reached by the drug immediately before the next dose is administered.

Outcome measures

Outcome measures
Measure
Treatment Period 1: Microgynon Group
n=19 Participants
Participants received a single dose of Microgynon (0.03 mg EE/0.15 mg LNG) on Day 1 of Treatment Period 1.
Treatment Period 3: Microgynon + GSK3036656 Group
n=18 Participants
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Treatment Period 3: Microgynon + GSK3036656 Group
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Trough Plasma Concentration (Ctau) at Steady State of GSK3036656 With EE/LNG and GSK3036656 Alone
Day 8
226.92 ng/mL
Geometric Coefficient of Variation 17.9
Trough Plasma Concentration (Ctau) at Steady State of GSK3036656 With EE/LNG and GSK3036656 Alone
Day 10
235.54 ng/mL
Geometric Coefficient of Variation 27.5
Trough Plasma Concentration (Ctau) at Steady State of GSK3036656 With EE/LNG and GSK3036656 Alone
Day 12
243.40 ng/mL
Geometric Coefficient of Variation 21.9
Trough Plasma Concentration (Ctau) at Steady State of GSK3036656 With EE/LNG and GSK3036656 Alone
Day 15
251.26 ng/mL
Geometric Coefficient of Variation 40.3
Trough Plasma Concentration (Ctau) at Steady State of GSK3036656 With EE/LNG and GSK3036656 Alone
Day 16
254.91 ng/mL
Geometric Coefficient of Variation 23.0

SECONDARY outcome

Timeframe: At Day 15

Population: The analysis was performed on the PK Set which includes all the participants from the SS who had at least 1 non-missing PK assessment. This population is defined according to the treatment actually received by the participants and comprises only those with the specified PK parameter available for summary computation.

Tmax is defined as a measure of the time required to reach the maximum concentration of the drug, determined directly from the concentration-time data.

Outcome measures

Outcome measures
Measure
Treatment Period 1: Microgynon Group
n=18 Participants
Participants received a single dose of Microgynon (0.03 mg EE/0.15 mg LNG) on Day 1 of Treatment Period 1.
Treatment Period 3: Microgynon + GSK3036656 Group
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Treatment Period 3: Microgynon + GSK3036656 Group
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Time to Maximum Observed Plasma Drug Concentration (Tmax) at Steady State of GSK3036656 With EE/LNG
0.95 hour
Interval 0.4 to 3.0

SECONDARY outcome

Timeframe: At Day 1 for the Treatment Period 1: Microgynon Group and at Day 15 for the Treatment Period 3: Microgynon + GSK3036656 Group

Population: The analysis was performed on the PK Set which includes all the participants from the SS who had at least 1 non-missing PK assessment. This population is defined according to the treatment actually received by the participants and comprises only those with the specified PK parameter available for summary computation.

AUC(0-t) is defined as area under the plasma drug concentration versus time curve from time zero (pre-dose) to last time of quantifiable concentration and was calculated by using a non-compartmental analysis.

Outcome measures

Outcome measures
Measure
Treatment Period 1: Microgynon Group
n=19 Participants
Participants received a single dose of Microgynon (0.03 mg EE/0.15 mg LNG) on Day 1 of Treatment Period 1.
Treatment Period 3: Microgynon + GSK3036656 Group
n=18 Participants
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Treatment Period 3: Microgynon + GSK3036656 Group
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
AUC Versus Time Curve (AUC[0-t]) of EE and LNG Alone and With GSK3036656
EE, Day 1
447.10 h*pg/mL
Geometric Coefficient of Variation 58.7
AUC Versus Time Curve (AUC[0-t]) of EE and LNG Alone and With GSK3036656
EE, Day 15
363.00 h*pg/mL
Geometric Coefficient of Variation 43.4
AUC Versus Time Curve (AUC[0-t]) of EE and LNG Alone and With GSK3036656
LNG, Day 1
21182.61 h*pg/mL
Geometric Coefficient of Variation 84.3
AUC Versus Time Curve (AUC[0-t]) of EE and LNG Alone and With GSK3036656
LNG, Day 15
23287.77 h*pg/mL
Geometric Coefficient of Variation 91.3

SECONDARY outcome

Timeframe: At Day 1 for the Treatment Period 1: Microgynon Group and at Day 15 for the Treatment Period 3: Microgynon + GSK3036656 Group

Population: The analysis was performed on the PK Set which includes all the participants from the SS who had at least 1 non-missing PK assessment. This population is defined according to the treatment actually received by the participants and comprises only those with the specified PK parameter available for summary computation.

Tmax is defined as a measure of the time required to reach the maximum concentration of the drug, determined directly from the concentration-time data.

Outcome measures

Outcome measures
Measure
Treatment Period 1: Microgynon Group
n=19 Participants
Participants received a single dose of Microgynon (0.03 mg EE/0.15 mg LNG) on Day 1 of Treatment Period 1.
Treatment Period 3: Microgynon + GSK3036656 Group
n=18 Participants
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Treatment Period 3: Microgynon + GSK3036656 Group
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Tmax of EE and LNG Alone and With GSK3036656
EE, Day 1
0.967 hour
Interval 0.47 to 2.97
Tmax of EE and LNG Alone and With GSK3036656
EE, Day 15
1.433 hour
Interval 0.45 to 3.05
Tmax of EE and LNG Alone and With GSK3036656
LNG, Day 1
0.967 hour
Interval 0.92 to 1.93
Tmax of EE and LNG Alone and With GSK3036656
LNG, Day 15
0.967 hour
Interval 0.45 to 2.07

SECONDARY outcome

Timeframe: At Day 1 for the Treatment Period 1: Microgynon Group and at Day 15 for the Treatment Period 3: Microgynon + GSK3036656 Group

Population: The analysis was performed on the PK Set which includes all the participants from the SS who had at least 1 non-missing PK assessment. This population is defined according to the treatment actually received by the participants and comprises only those with the specified PK parameter available for summary computation.

t1/2 is defined as the time required by the plasma concentration to decline by 50% and was calculated by using a non-compartmental analysis.

Outcome measures

Outcome measures
Measure
Treatment Period 1: Microgynon Group
n=13 Participants
Participants received a single dose of Microgynon (0.03 mg EE/0.15 mg LNG) on Day 1 of Treatment Period 1.
Treatment Period 3: Microgynon + GSK3036656 Group
n=13 Participants
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Treatment Period 3: Microgynon + GSK3036656 Group
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Apparent Terminal Half-life (t1/2) of EE and LNG Alone and With GSK3036656
EE, Day 1
19.180 hour
Interval 4.38 to 49.03
Apparent Terminal Half-life (t1/2) of EE and LNG Alone and With GSK3036656
EE, Day 15
10.867 hour
Interval 3.14 to 29.39
Apparent Terminal Half-life (t1/2) of EE and LNG Alone and With GSK3036656
LNG, Day 1
41.315 hour
Interval 4.0 to 100.0
Apparent Terminal Half-life (t1/2) of EE and LNG Alone and With GSK3036656
LNG, Day 15
34.697 hour
Interval 4.17 to 118.18

SECONDARY outcome

Timeframe: From the signing of the informed consent form (a period starting up to 14 days before the first dose on Day 1) up to Day 18

Population: The analysis was performed on the SS which included all the participants who received at least one dose of study medication.

A SAE is defined as any untoward medical occurrence that, at any dose: resulted in death, was life threatening, required hospitalization or prolongation of existing hospitalization, resulted in disability/incapacity, congenital anomaly/birth defect or any other situation according to medical or scientific judgment.

Outcome measures

Outcome measures
Measure
Treatment Period 1: Microgynon Group
n=20 Participants
Participants received a single dose of Microgynon (0.03 mg EE/0.15 mg LNG) on Day 1 of Treatment Period 1.
Treatment Period 3: Microgynon + GSK3036656 Group
n=19 Participants
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Treatment Period 3: Microgynon + GSK3036656 Group
n=18 Participants
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Number of Participants With Serious Adverse Events (SAEs)
0 Participants
0 Participants
0 Participants

SECONDARY outcome

Timeframe: From Day 1 up to Day 18

Population: The analysis was performed on the SS which included all the participants who received at least one dose of study medication.

The intensity of AEs was assessed using the Division of Acquired Immunodeficiency Syndrome (DAIDS) criteria Version 2.1 where grades are defined based on numeric criteria as follows Grade 3: severe or medically significant; Grade 4: potentially life-threatening; Grade 5: death. A higher grade indicates greater severity.

Outcome measures

Outcome measures
Measure
Treatment Period 1: Microgynon Group
n=20 Participants
Participants received a single dose of Microgynon (0.03 mg EE/0.15 mg LNG) on Day 1 of Treatment Period 1.
Treatment Period 3: Microgynon + GSK3036656 Group
n=19 Participants
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Treatment Period 3: Microgynon + GSK3036656 Group
n=18 Participants
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Number of Participants With Grade 3 or Higher Severity Adverse Events (AEs)
0 Participants
0 Participants
0 Participants

SECONDARY outcome

Timeframe: From Day 1 up to Day 18

Population: The analysis was performed on the SS which included all the participants who received at least one dose of study medication.

The drug-related AEs were assessed by the investigator to be possibly, probably or definitely related to the study interventions.

Outcome measures

Outcome measures
Measure
Treatment Period 1: Microgynon Group
n=20 Participants
Participants received a single dose of Microgynon (0.03 mg EE/0.15 mg LNG) on Day 1 of Treatment Period 1.
Treatment Period 3: Microgynon + GSK3036656 Group
n=19 Participants
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Treatment Period 3: Microgynon + GSK3036656 Group
n=18 Participants
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Number of Participants With Drug-related AEs Following Administration of Microgynon and Following the Administration of GSK3036656
0 Participants
0 Participants
0 Participants

SECONDARY outcome

Timeframe: From Day 1 up to Day 18

Population: The analysis was performed on the SS which included all the participants who received at least one dose of study medication.

Adverse events resulting in withholding of study intervention administration were included in this outcome measure.

Outcome measures

Outcome measures
Measure
Treatment Period 1: Microgynon Group
n=20 Participants
Participants received a single dose of Microgynon (0.03 mg EE/0.15 mg LNG) on Day 1 of Treatment Period 1.
Treatment Period 3: Microgynon + GSK3036656 Group
n=19 Participants
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Treatment Period 3: Microgynon + GSK3036656 Group
n=18 Participants
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Number of Participants Withdrawn From the Treatment Due to AEs
0 Participants
1 Participants
0 Participants

SECONDARY outcome

Timeframe: From Day 1 up to Day 18

Population: The analysis was performed on the SS which included all the participants who received at least one dose of study medication.

Outcome measures

Outcome measures
Measure
Treatment Period 1: Microgynon Group
n=20 Participants
Participants received a single dose of Microgynon (0.03 mg EE/0.15 mg LNG) on Day 1 of Treatment Period 1.
Treatment Period 3: Microgynon + GSK3036656 Group
n=19 Participants
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Treatment Period 3: Microgynon + GSK3036656 Group
n=18 Participants
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Number of Participants Withdrawn From the Study Due to AEs
0 Participants
1 Participants
0 Participants

SECONDARY outcome

Timeframe: From Day 1 up to Day 18

Population: The analysis was performed on the SS which included all the participants who received at least one dose of study medication.

PCI ECG values are defined as any ECG findings which, in the opinion of the investigator or medical monitor would interfere with the safety of the individual participant. The ECG measurements analyzed are PR Interval, QRS Duration, and QTcF Interval. A value was reported as "high" for a period if it shifted from "low" or "within range" (W/in) at the start of the treatment period but was "high" during or at the end of the same treatment period. A value was reported as "low" for a period if it shifted from "high" or "W/in" at the start of the treatment period but was "low" during or at the end of the same treatment period. A value was reported as "No Change" if it remained unchanged (e.g. High to High), or as "To W/in Range" if it was within range.

Outcome measures

Outcome measures
Measure
Treatment Period 1: Microgynon Group
n=20 Participants
Participants received a single dose of Microgynon (0.03 mg EE/0.15 mg LNG) on Day 1 of Treatment Period 1.
Treatment Period 3: Microgynon + GSK3036656 Group
n=19 Participants
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Treatment Period 3: Microgynon + GSK3036656 Group
n=18 Participants
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Number of Participants With Electrocardiogram (ECG) Values of Potential Clinical Importance (PCI)
PR Interval, To High
0 Participants
0 Participants
0 Participants
Number of Participants With Electrocardiogram (ECG) Values of Potential Clinical Importance (PCI)
QRS Duration, To Low
3 Participants
1 Participants
3 Participants
Number of Participants With Electrocardiogram (ECG) Values of Potential Clinical Importance (PCI)
PR Interval, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Electrocardiogram (ECG) Values of Potential Clinical Importance (PCI)
PR Interval, To W/in Range or No Change
20 Participants
19 Participants
18 Participants
Number of Participants With Electrocardiogram (ECG) Values of Potential Clinical Importance (PCI)
QRS Duration, To W/in Range or No Change
17 Participants
18 Participants
15 Participants
Number of Participants With Electrocardiogram (ECG) Values of Potential Clinical Importance (PCI)
QRS Duration, To High
0 Participants
0 Participants
0 Participants
Number of Participants With Electrocardiogram (ECG) Values of Potential Clinical Importance (PCI)
QTcF Interval, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Electrocardiogram (ECG) Values of Potential Clinical Importance (PCI)
QTcF Interval, To W/in Range or No Change
20 Participants
19 Participants
18 Participants
Number of Participants With Electrocardiogram (ECG) Values of Potential Clinical Importance (PCI)
QTcF Interval, To High
0 Participants
0 Participants
0 Participants

SECONDARY outcome

Timeframe: From Day 1 up to Day 18

Population: The analysis was performed on the SS which included all the participants who received at least one dose of study medication.

The chemistry parameters analyzed are homocysteine, alanine aminotransferase (ALT), aspartate aminotransferase (AST), direct bilirubin, bilirubin, calcium, creatine kinase, potassium, protein, sodium, urea, and glucose. A value was reported as "high" for a period if it shifted from "low" or "within range" (W/in) at the start of the treatment period but was "high" during or at the end of the same treatment period. A value was reported as "low" for a period if it shifted from "high" or "W/in" at the start of the treatment period but was "low" during or at the end of the same treatment period. A value was reported as "No Change" if it remained unchanged (e.g. High to High), or as "To W/in Range" if it was within range.

Outcome measures

Outcome measures
Measure
Treatment Period 1: Microgynon Group
n=20 Participants
Participants received a single dose of Microgynon (0.03 mg EE/0.15 mg LNG) on Day 1 of Treatment Period 1.
Treatment Period 3: Microgynon + GSK3036656 Group
n=19 Participants
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Treatment Period 3: Microgynon + GSK3036656 Group
n=18 Participants
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Bilirubin, To High
0 Participants
0 Participants
0 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Calcium, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Calcium, To W/in Range or No Change
20 Participants
19 Participants
18 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Calcium, To High
0 Participants
0 Participants
0 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Creatine Kinase, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Creatine Kinase, To W/in Range or No Change
20 Participants
18 Participants
18 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Homocysteine, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Homocysteine, To W/in Range or No Change
19 Participants
19 Participants
15 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Homocysteine, To High
1 Participants
0 Participants
3 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
ALT, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
ALT, To W/in Range or No Change
20 Participants
19 Participants
18 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
ALT, To High
0 Participants
0 Participants
0 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
AST, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
AST, To W/in Range or No Change
20 Participants
16 Participants
15 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
AST, To High
0 Participants
0 Participants
0 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Creatine Kinase, To High
0 Participants
1 Participants
0 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Direct Bilirubin, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Direct Bilirubin, To W/in Range or No Change
20 Participants
17 Participants
17 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Direct Bilirubin, To High
0 Participants
1 Participants
0 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Bilirubin, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Bilirubin, To W/in Range or No Change
20 Participants
18 Participants
17 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Potassium, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Potassium, To W/in Range or No Change
20 Participants
16 Participants
15 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Potassium, To High
0 Participants
0 Participants
0 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Protein, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Protein, To W/in Range or No Change
20 Participants
19 Participants
18 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Protein, To High
0 Participants
0 Participants
0 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Sodium, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Sodium, To W/in Range or No Change
20 Participants
19 Participants
18 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Sodium, To High
0 Participants
0 Participants
0 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Urea, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Urea, To W/in Range or No Change
19 Participants
19 Participants
18 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Urea, To High
1 Participants
0 Participants
0 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Glucose, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Glucose, To W/in Range or No Change
19 Participants
18 Participants
18 Participants
Number of Participants With Clinical Chemistry Laboratory Values of PCI
Glucose, To High
0 Participants
0 Participants
0 Participants

SECONDARY outcome

Timeframe: From Day 1 up to Day 18

Population: The analysis was performed on the SS which included all the participants who received at least one dose of study medication. Only participants for whom haematology data were available were included in the analysis of this outcome measure.

The analyzed hematology parameters are reticulocytes/erythrocytes, monocytes/leukocytes, erythrocytes, basophils/leukocytes, eosinophils/leukocytes, mean corpuscular hemoglobin, hematocrit, hemoglobin, lymphocytes, neutrophils, and platelets. A value was reported as "high" for a period if it shifted from "low" or "within range" (W/in) at the start of the treatment period but was "high" during or at the end of the same treatment period. A value was reported as "low" for a period if it shifted from "high" or "W/in" at the start of the treatment period but was "low" during or at the end of the same treatment period. A value was reported as "No Change" if it remained unchanged (e.g. High to High), or as "To W/in Range" if it was within range.

Outcome measures

Outcome measures
Measure
Treatment Period 1: Microgynon Group
n=20 Participants
Participants received a single dose of Microgynon (0.03 mg EE/0.15 mg LNG) on Day 1 of Treatment Period 1.
Treatment Period 3: Microgynon + GSK3036656 Group
n=18 Participants
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Treatment Period 3: Microgynon + GSK3036656 Group
n=17 Participants
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Number of Participants With Haematology Laboratory Values of PCI
Basophils/Leukocytes, To Low
7 Participants
1 Participants
1 Participants
Number of Participants With Haematology Laboratory Values of PCI
Basophils/Leukocytes, To W/in Range or No Change
13 Participants
17 Participants
16 Participants
Number of Participants With Haematology Laboratory Values of PCI
Basophils/Leukocytes, To High
0 Participants
0 Participants
0 Participants
Number of Participants With Haematology Laboratory Values of PCI
Eosinophils/Leukocytes, To Low
1 Participants
0 Participants
2 Participants
Number of Participants With Haematology Laboratory Values of PCI
Eosinophils/Leukocytes, To W/in Range or No Change
19 Participants
14 Participants
15 Participants
Number of Participants With Haematology Laboratory Values of PCI
Eosinophils/Leukocytes, To High
0 Participants
4 Participants
0 Participants
Number of Participants With Haematology Laboratory Values of PCI
Monocytes/Leukocytes, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Haematology Laboratory Values of PCI
Monocytes/Leukocytes, To W/in Range or No Change
20 Participants
17 Participants
17 Participants
Number of Participants With Haematology Laboratory Values of PCI
Monocytes/Leukocytes, To High
0 Participants
1 Participants
0 Participants
Number of Participants With Haematology Laboratory Values of PCI
Erythrocytes, To Low
0 Participants
5 Participants
0 Participants
Number of Participants With Haematology Laboratory Values of PCI
Erythrocytes, To W/in Range or No Change
20 Participants
13 Participants
17 Participants
Number of Participants With Haematology Laboratory Values of PCI
Erythrocytes, To High
0 Participants
0 Participants
0 Participants
Number of Participants With Haematology Laboratory Values of PCI
Reticulocytes/Erythrocytes, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Haematology Laboratory Values of PCI
Reticulocytes/Erythrocytes, To W/in Range or No Change
19 Participants
16 Participants
16 Participants
Number of Participants With Haematology Laboratory Values of PCI
Reticulocytes/Erythrocytes, To High
1 Participants
2 Participants
1 Participants
Number of Participants With Haematology Laboratory Values of PCI
Mean Corpuscular Hemoglobin, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Haematology Laboratory Values of PCI
Mean Corpuscular Hemoglobin, To W/in Range or No Change
20 Participants
18 Participants
17 Participants
Number of Participants With Haematology Laboratory Values of PCI
Mean Corpuscular Hemoglobin, To High
0 Participants
0 Participants
0 Participants
Number of Participants With Haematology Laboratory Values of PCI
Hematocrit, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Haematology Laboratory Values of PCI
Hematocrit, To W/in Range or No Change
20 Participants
18 Participants
17 Participants
Number of Participants With Haematology Laboratory Values of PCI
Hematocrit, To High
0 Participants
0 Participants
0 Participants
Number of Participants With Haematology Laboratory Values of PCI
Hemoglobin, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Haematology Laboratory Values of PCI
Hemoglobin, To W/in Range or No Change
20 Participants
18 Participants
17 Participants
Number of Participants With Haematology Laboratory Values of PCI
Hemoglobin, To High
0 Participants
0 Participants
0 Participants
Number of Participants With Haematology Laboratory Values of PCI
Lymphocytes, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Haematology Laboratory Values of PCI
Lymphocytes, To W/in Range or No Change
20 Participants
18 Participants
17 Participants
Number of Participants With Haematology Laboratory Values of PCI
Lymphocytes, To High
0 Participants
0 Participants
0 Participants
Number of Participants With Haematology Laboratory Values of PCI
Neutrophils, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Haematology Laboratory Values of PCI
Neutrophils, To W/in Range or No Change
20 Participants
18 Participants
17 Participants
Number of Participants With Haematology Laboratory Values of PCI
Neutrophils, To High
0 Participants
0 Participants
0 Participants
Number of Participants With Haematology Laboratory Values of PCI
Platelets, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Haematology Laboratory Values of PCI
Platelets, To W/in Range or No Change
20 Participants
18 Participants
17 Participants
Number of Participants With Haematology Laboratory Values of PCI
Platelets, To High
0 Participants
0 Participants
0 Participants

SECONDARY outcome

Timeframe: From Day 1 up to Day 18

Population: The analysis was performed on the SS which included all the participants who received at least one dose of study medication.

The analyzed vital signs are systolic blood pressure, diastolic blood pressure, heart rate, body temperature, and respiration rate. A value was reported as "high" for a period if it shifted from "low" or "within range" (W/in) at the start of the treatment period but was "high" during or at the end of the same treatment period. A value was reported as "low" for a period if it shifted from "high" or "W/in" at the start of the treatment period but was "low" during or at the end of the same treatment period. A value was reported as "No Change" if it remained unchanged (e.g. High to High), or as "To W/in Range" if it was within range.

Outcome measures

Outcome measures
Measure
Treatment Period 1: Microgynon Group
n=20 Participants
Participants received a single dose of Microgynon (0.03 mg EE/0.15 mg LNG) on Day 1 of Treatment Period 1.
Treatment Period 3: Microgynon + GSK3036656 Group
n=19 Participants
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Treatment Period 3: Microgynon + GSK3036656 Group
n=18 Participants
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Number of Participants With Vital Signs Parameters of PCI
Diastolic Blood Pressure, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Vital Signs Parameters of PCI
Diastolic Blood Pressure, To w/in Range or No Change
20 Participants
19 Participants
18 Participants
Number of Participants With Vital Signs Parameters of PCI
Diastolic Blood Pressure, To High
0 Participants
0 Participants
0 Participants
Number of Participants With Vital Signs Parameters of PCI
Pulse Rate, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Vital Signs Parameters of PCI
Pulse Rate, To w/in Range or No Change
20 Participants
19 Participants
18 Participants
Number of Participants With Vital Signs Parameters of PCI
Pulse Rate, To High
0 Participants
0 Participants
0 Participants
Number of Participants With Vital Signs Parameters of PCI
Respiratory Rate, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Vital Signs Parameters of PCI
Respiratory Rate, To w/in Range or No Change
20 Participants
19 Participants
18 Participants
Number of Participants With Vital Signs Parameters of PCI
Respiratory Rate, To High
0 Participants
0 Participants
0 Participants
Number of Participants With Vital Signs Parameters of PCI
Systolic Blood Pressure, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Vital Signs Parameters of PCI
Systolic Blood Pressure, To w/in Range or No Change
20 Participants
19 Participants
18 Participants
Number of Participants With Vital Signs Parameters of PCI
Systolic Blood Pressure, To High
0 Participants
0 Participants
0 Participants
Number of Participants With Vital Signs Parameters of PCI
Temperature, To Low
0 Participants
0 Participants
0 Participants
Number of Participants With Vital Signs Parameters of PCI
Temperature, To w/in Range or No Change
20 Participants
19 Participants
18 Participants
Number of Participants With Vital Signs Parameters of PCI
Temperature, To High
0 Participants
0 Participants
0 Participants

Adverse Events

Treatment Period 1: Microgynon Group

Serious events: 0 serious events
Other events: 4 other events
Deaths: 0 deaths

Treatment Period 2: GSK3036656 Group

Serious events: 0 serious events
Other events: 1 other events
Deaths: 0 deaths

Treatment Period 3: Microgynon + GSK3036656 Group

Serious events: 0 serious events
Other events: 1 other events
Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Other adverse events
Measure
Treatment Period 1: Microgynon Group
n=20 participants at risk
Participants received a single dose of Microgynon (0.03 mg EE/0.15 mg LNG) on Day 1 of Treatment Period 1.
Treatment Period 2: GSK3036656 Group
n=19 participants at risk
Participants received GSK3036656 40 mg on Day 4, followed by GSK3036656 20 mg once daily from Day 5 to Day 14 during Treatment Period 2.
Treatment Period 3: Microgynon + GSK3036656 Group
n=18 participants at risk
Participants received Microgynon (EE/LNG) along with GSK3036656 20 mg on Day 15, followed by GSK3036656 20 mg once daily from Day 16 to Day 17 during Treatment Period 3.
Nervous system disorders
Headache
20.0%
4/20 • Number of events 4 • Adverse Events were reported from Day 1 (first study dose) up to Day 18. Serious Adverse Events were reported from the signing of the informed consent form (a period starting up to 14 days before the first dose on Day 1) up to Day 18
0.00%
0/19 • Adverse Events were reported from Day 1 (first study dose) up to Day 18. Serious Adverse Events were reported from the signing of the informed consent form (a period starting up to 14 days before the first dose on Day 1) up to Day 18
5.6%
1/18 • Number of events 1 • Adverse Events were reported from Day 1 (first study dose) up to Day 18. Serious Adverse Events were reported from the signing of the informed consent form (a period starting up to 14 days before the first dose on Day 1) up to Day 18
Gastrointestinal disorders
Toothache
0.00%
0/20 • Adverse Events were reported from Day 1 (first study dose) up to Day 18. Serious Adverse Events were reported from the signing of the informed consent form (a period starting up to 14 days before the first dose on Day 1) up to Day 18
5.3%
1/19 • Number of events 1 • Adverse Events were reported from Day 1 (first study dose) up to Day 18. Serious Adverse Events were reported from the signing of the informed consent form (a period starting up to 14 days before the first dose on Day 1) up to Day 18
0.00%
0/18 • Adverse Events were reported from Day 1 (first study dose) up to Day 18. Serious Adverse Events were reported from the signing of the informed consent form (a period starting up to 14 days before the first dose on Day 1) up to Day 18

Additional Information

GSK Response Center

GlaxoSmithKline

Phone: 866-435-7343

Results disclosure agreements

  • Principal investigator is a sponsor employee GSK agreements may vary with individual investigators, but will not prohibit any investigator from publishing. GSK supports the publication of results from all centers of a multi-center trial but requests that reports based on single site data not precede the primary publication of the entire clinical trial.
  • Publication restrictions are in place

Restriction type: OTHER