A Study to Investigate the Effect on QTcF of Baxdrostat Compared With Placebo, Using Moxifloxacin as a Positive Control, in Healthy Participants

Phase 1CompletedNCT06194032

AstraZeneca28 enrolled

Overview

This study will assess the effect of single oral doses of baxdrostat on the ECG interval measured from the onset of the QRS complex to the end of the T wave (QT) interval corrected for HR using Fridericia's formula (QTcF) compared to placebo using a concentration-QTcF analysis, and with moxifloxacin as positive control, in healthy participants.

This is a randomised, placebo-controlled, double-blind, 4-way crossover TQT study to assess the effect of single oral doses of baxdrostat on the QTcF compared to placebo using a concentration-QTcF analysis, and with open-label moxifloxacin as positive control, in 28 healthy participants, performed at a single clinical unit. The study will comprise of: * a screening period of maximum 28 days, * four treatment periods during which participants will be resident at the Clinical Unit from Treatment Period Day -1 until at least 48 hours after dosing (Treatment Period Day 3). * a final Follow-up Visit within 7 to 10 days following discharge after Visit 5 Participants will each receive a single dose of all treatments in a cross-over design over 4 treatment periods. Participants will be randomised to 1 of 4 treatment sequences with equal allocation regarded as a Williams design of order 4. Treatment Periods will be separated by a washout period of at least 7 days but no more than 9 days.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

TRIPLE

Enrollment

Conditions

Healthy Participants

Interventions

BaxdrostatDRUG

Participants will receive baxdrostat as two separate doses.

PlaceboDRUG

Participants will receive baxdrostat matching placebo.

MoxifloxacinDRUG

Participants will receive a single dose moxifloxacin

Eligibility

Sex: ALLMin age: 18 YearsMax age: 55 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Females must have a negative pregnancy test. * Have a Basal Metabolic index (BMI) between 19 and 30 kg/m2 inclusive and weigh at least 50 kg. Exclusion Criteria: * History of any clinically significant disease or disorder. * History or presence of gastrointestinal, hepatic, or renal disease, or any other condition known to interfere with absorption, distribution, metabolism, or excretion of drugs. * History of additional risk factors for Torsade de Pointes. * History of neoplastic disease. * Family history of sudden cardiac death. * Any skin condition likely to interfere with ECG electrode placement or adhesion. * Any clinically significant illness, medical/surgical procedure, or trauma within 4 weeks of the first administration of drug. * Any clinically significant abnormalities at screening and first admission in rhythm, conduction, or morphology of the 12-lead resting ECG and any clinically important abnormalities in the 12-lead ECG as considered by the investigator. * Participant has clinical signs and symptoms consistent with COVID-19. * Current smokers or those who have smoked or used nicotine products (including e-cigarettes) within the 3 months prior to screening. * Positive screen for drugs of abuse, alcohol or cotinine at screening or on each admission to the Clinical Unit. * Participants who have previously received Baxdrostat. * Participants with any special dietary restrictions such as participants who are lactose intolerant or are vegetarians/vegans. * Participants who cannot communicate reliably with the investigator and/or are not able to read, speak, and understand the local language. * Vulnerable participants, eg, kept in detention, protected adults under guardianship, trusteeship, or committed to an institution by governmental or juridical order.

Locations (1)

Research Site

Berlin, Germany

Outcomes

Primary Outcomes

Placebo corrected change from baseline in QTcF (ΔΔQTcF)

The effect of single doses of baxdrostat on QTcF compared to placebo using a concentration-QTcF analysis will be assessed.

Time frame: Visit 2,3, 4 and 5:- Day 1: Pre-dose, 0.5, 1, 1.5, 2,3,4,5,6, 8 and 12 hour (h); Day 2: 24 and 36 h post-dose; Day 3: 48 h post dose

Secondary Outcomes

Heart Rate (HR)

The effect of baxdrostat on HR will be assessed.

Time frame: Visit 2,3, 4 and 5:- Day 1: Pre-dose, 0.5, 1, 1.5, 2,3,4,5,6, 8 and 12 hour (h); Day 2: 24 and 36 h post-dose; Day 3: 48 h post dose

RR interval

The effect of baxdrostat on RR interval will be assessed.

Time frame: Visit 2,3, 4 and 5:- Day 1: Pre-dose, 0.5, 1, 1.5, 2,3,4,5,6, 8 and 12 hour (h); Day 2: 24 and 36 h post-dose; Day 3: 48 h post dose

PR interval

The effect of baxdrostat on PR interval will be assessed.

Time frame: Visit 2,3, 4 and 5:- Day 1: Pre-dose, 0.5, 1, 1.5, 2,3,4,5,6, 8 and 12 hour (h); Day 2: 24 and 36 h post-dose; Day 3: 48 h post dose

QRS interval

The effect of baxdrostat on QRS interval will be assessed.

Time frame: Visit 2,3, 4 and 5:- Day 1: Pre-dose, 0.5, 1, 1.5, 2,3,4,5,6, 8 and 12 hour (h); Day 2: 24 and 36 h post-dose; Day 3: 48 h post dose

Change from baseline in Heart rate (ΔHR)

The effect of baxdrostat on HR will be assessed.

Time frame: Visit 2,3, 4 and 5:- Day 1: Pre-dose, 0.5, 1, 1.5, 2,3,4,5,6, 8 and 12 hour (h); Day 2: 24 and 36 h post-dose; Day 3: 48 h post dose

Data from ClinicalTrials.gov

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The effect of baxdrostat on QT interval will be assessed.

Time frame: Visit 2,3, 4 and 5:- Day 1: Pre-dose, 0.5, 1, 1.5, 2,3,4,5,6, 8 and 12 hour (h); Day 2: 24 and 36 h post-dose; Day 3: 48 h post dose

Change from baseline in RR interval (ΔRR)

The effect of baxdrostat on ΔRR interval will be assessed.

Time frame: Visit 2,3, 4 and 5:- Day 1: Pre-dose, 0.5, 1, 1.5, 2,3,4,5,6, 8 and 12 hour (h); Day 2: 24 and 36 h post-dose; Day 3: 48 h post dose

Change from baseline in PR interval (ΔPR)

The effect of baxdrostat on ΔPR interval will be assessed.

Time frame: Visit 2,3, 4 and 5:- Day 1: Pre-dose, 0.5, 1, 1.5, 2,3,4,5,6, 8 and 12 hour (h); Day 2: 24 and 36 h post-dose; Day 3: 48 h post dose

Change from baseline in QRS interval (ΔQRS)

The effect of baxdrostat on ΔQRS interval will be assessed.

Time frame: Visit 2,3, 4 and 5:- Day 1: Pre-dose, 0.5, 1, 1.5, 2,3,4,5,6, 8 and 12 hour (h); Day 2: 24 and 36 h post-dose; Day 3: 48 h post dose

Change from baseline in QTcF (ΔQTcF)

The effect of baxdrostat on ΔQTcF will be assessed.

Time frame: Visit 2,3, 4 and 5:- Day 1: Pre-dose, 0.5, 1, 1.5, 2,3,4,5,6, 8 and 12 hour (h); Day 2: 24 and 36 h post-dose; Day 3: 48 h post dose

Change from baseline in QT interval (ΔQT)

The effect of baxdrostat on ΔQT interval will be assessed.

Time frame: Visit 2,3, 4 and 5:- Day 1: Pre-dose, 0.5, 1, 1.5, 2,3,4,5,6, 8 and 12 hour (h); Day 2: 24 and 36 h post-dose; Day 3: 48 h post dose

Number of participants with significant change in QTcF

The presence of categorical outliers for QTcF after baxdrostat administration will be assessed.

Time frame: Day 1 to Day 3

Number of participants with significant change in PR interval

The presence of categorical outliers for PR interval after baxdrostat administration will be assessed.

Time frame: Day 1 to Day 3

Number of participants with significant change in QRS interval

The presence of categorical outliers for QRS interval after baxdrostat administration will be assessed.

Time frame: Day 1 to Day 3

Number of participants with significant change in RR interval

The presence of categorical outliers for RR interval after baxdrostat administration will be assessed.

Time frame: Day 1 to Day 3

Number of participants with significant change in QT interval

The presence of categorical outliers for QT interval after baxdrostat administration will be assessed.

Time frame: Day 1 to Day 3

Number of participants with significant change in HR

The presence of categorical outliers for HR after baxdrostat administration will be assessed.

Time frame: Day 1 to Day 3

Placebo corrected change from baseline in HR (ΔΔHR)

The effect of baxdrostat on ΔΔHR will be assessed.

Time frame: Visit 2,3, 4 and 5:- Day 1: Pre-dose, 0.5, 1, 1.5, 2,3,4,5,6, 8 and 12 hour (h); Day 2: 24 and 36 h post-dose; Day 3: 48 h post dose

Placebo corrected change from baseline in RR interval (ΔΔRR)

The effect of baxdrostat on ΔΔRR interval will be assessed.

Time frame: Visit 2,3, 4 and 5:- Day 1: Pre-dose, 0.5, 1, 1.5, 2,3,4,5,6, 8 and 12 hour (h); Day 2: 24 and 36 h post-dose; Day 3: 48 h post dose

Placebo corrected change from baseline in PR interval (ΔΔPR)

The effect of baxdrostat on ΔΔPR interval will be assessed.

Time frame: Visit 2,3, 4 and 5:- Day 1: Pre-dose, 0.5, 1, 1.5, 2,3,4,5,6, 8 and 12 hour (h); Day 2: 24 and 36 h post-dose; Day 3: 48 h post dose

Placebo corrected change from baseline in QRS (ΔΔQRS)

The effect of baxdrostat on ΔΔQRS interval will be assessed.

Time frame: Visit 2,3, 4 and 5:- Day 1: Pre-dose, 0.5, 1, 1.5, 2,3,4,5,6, 8 and 12 hour (h); Day 2: 24 and 36 h post-dose; Day 3: 48 h post dose

AUClast of Baxdrostat

The PK of baxdrostat will be assessed.

Time frame: Day 1 to Day 3

AUCinf of Baxdrostat

The PK of baxdrostat will be assessed.

Time frame: Day 1 to Day 3

Maximum observed plasma peak concentration (Cmax) of baxdrostat

The PK of baxdrostat will be assessed.

Time frame: Day 1 to Day 3

Time to reach peak or maximum observed concentration (Tmax) of baxdrostat

The PK of baxdrostat will be assessed.

Time frame: Day 1 to Day 3

Number of participants with Adverse Events (AEs)

The safety and tolerability of baxdrostat will be assessed.

Time frame: Day 1 to last day of follow-up (approximately 7 to 10 days after the last dose)

Number of participants with Adverse events of special interest

The safety and tolerability of baxdrostat will be assessed. For this clinical study, AESIs include the following: hyperkalaemia, hyponatraemia, and hypotension events that require intervention.

Time frame: Day 1 to last day of follow-up (approximately 7 to 10 days after the last dose)

Number of treatment-emergent changes in T-wave morphology

Morphological changes in the T-wave after baxdrostat administration will be assessed.

Time frame: Day 1 to Day 3

Number of treatment-emergent changes in U-waves presence and morphology

Morphological changes in the U wave after baxdrostat administration will be assessed.

Time frame: Day 1 to Day 3