A Study to Assess the Pharmacodynamic Effect of Single Doses of AZD9977 in Healthy Male Subjects

Phase 1

Completed

Conditions: Pharmacodynamics
Healthy Subjects

Interventions: Drug: AZD9977 oral suspension
Drug: AZD9977 placebo oral suspension
Drug: Fludrocortisone, tablets
Drug: Eplerenone, tablets

Registration Number: NCT02532998

Lead Sponsor: AstraZeneca

Brief Summary: This is a Phase I, Randomized, Single-Blind, Crossover Study to Assess the Pharmacodynamics of AZD9977 following Single-Dose administration to healthy male subjects

Detailed Description: This study will be a phase I study to assess the pharmacodynamics of AZD9977 following single-dose administration to healthy male subjects. It is a single-blind (with regards to AZD9977 and AZD9977 Placebo), randomized, four-treatment, four-period crossover design, with a potential 5th and 6th randomized cross-over treatment period. In this study eplerenone is used as a positive control and fludrocortisone will be used as a challenge agent. In addition the safety, tolerability and pharmacokinetics will be assessed.

Recruitment & Eligibility

Status: COMPLETED

Sex: Male

Target Recruitment: 40

Inclusion Criteria

Not provided

Exclusion Criteria

Not provided

Study & Design

Study Type: INTERVENTIONAL

Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
Treatment Sequence 1	Eplerenone, tablets	Period 1: fludrocortisone + eplerenone + AZD9977 Period 2: fludrocortisone + eplerenone + AZD9977 Placebo Period 3: fludrocortisone + AZD9977 Placebo Period 4: fludrocortisone + AZD9977 Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 2	Fludrocortisone, tablets	Period 1: fludrocortisone + AZD9977 Placebo Period 2: fludrocortisone + eplerenone + AZD9977 Period 3: fludrocortisone + AZD9977 Period 4: fludrocortisone + eplerenone + AZD9977 Placebo Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 3	AZD9977 placebo oral suspension	Period 1: fludrocortisone + AZD9977 Period 2: fludrocortisone + AZD9977 Placebo Period 3: fludrocortisone + eplerenone + AZD9977 Placebo Period 4: fludrocortisone + eplerenone + AZD9977 Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 1	Fludrocortisone, tablets	Period 1: fludrocortisone + eplerenone + AZD9977 Period 2: fludrocortisone + eplerenone + AZD9977 Placebo Period 3: fludrocortisone + AZD9977 Placebo Period 4: fludrocortisone + AZD9977 Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 1	AZD9977 oral suspension	Period 1: fludrocortisone + eplerenone + AZD9977 Period 2: fludrocortisone + eplerenone + AZD9977 Placebo Period 3: fludrocortisone + AZD9977 Placebo Period 4: fludrocortisone + AZD9977 Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 2	AZD9977 placebo oral suspension	Period 1: fludrocortisone + AZD9977 Placebo Period 2: fludrocortisone + eplerenone + AZD9977 Period 3: fludrocortisone + AZD9977 Period 4: fludrocortisone + eplerenone + AZD9977 Placebo Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 3	AZD9977 oral suspension	Period 1: fludrocortisone + AZD9977 Period 2: fludrocortisone + AZD9977 Placebo Period 3: fludrocortisone + eplerenone + AZD9977 Placebo Period 4: fludrocortisone + eplerenone + AZD9977 Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 1	AZD9977 placebo oral suspension	Period 1: fludrocortisone + eplerenone + AZD9977 Period 2: fludrocortisone + eplerenone + AZD9977 Placebo Period 3: fludrocortisone + AZD9977 Placebo Period 4: fludrocortisone + AZD9977 Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 2	Eplerenone, tablets	Period 1: fludrocortisone + AZD9977 Placebo Period 2: fludrocortisone + eplerenone + AZD9977 Period 3: fludrocortisone + AZD9977 Period 4: fludrocortisone + eplerenone + AZD9977 Placebo Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 3	Eplerenone, tablets	Period 1: fludrocortisone + AZD9977 Period 2: fludrocortisone + AZD9977 Placebo Period 3: fludrocortisone + eplerenone + AZD9977 Placebo Period 4: fludrocortisone + eplerenone + AZD9977 Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 4	AZD9977 placebo oral suspension	Period 1: fludrocortisone + eplerenone + AZD9977 Placebo Period 2: fludrocortisone + eplerenone + AZD9977 Period 3: fludrocortisone + AZD9977 Period 4: fludrocortisone + AZD9977 Placebo Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 5	AZD9977 oral suspension	Period 1: fludrocortisone + eplerenone + AZD9977 Period 2: fludrocortisone + eplerenone + AZD9977 Placebo Period 3: fludrocortisone + AZD9977 Placebo Period 4: fludrocortisone + AZD9977 Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 5	Fludrocortisone, tablets	Period 1: fludrocortisone + eplerenone + AZD9977 Period 2: fludrocortisone + eplerenone + AZD9977 Placebo Period 3: fludrocortisone + AZD9977 Placebo Period 4: fludrocortisone + AZD9977 Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 2	AZD9977 oral suspension	Period 1: fludrocortisone + AZD9977 Placebo Period 2: fludrocortisone + eplerenone + AZD9977 Period 3: fludrocortisone + AZD9977 Period 4: fludrocortisone + eplerenone + AZD9977 Placebo Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 4	AZD9977 oral suspension	Period 1: fludrocortisone + eplerenone + AZD9977 Placebo Period 2: fludrocortisone + eplerenone + AZD9977 Period 3: fludrocortisone + AZD9977 Period 4: fludrocortisone + AZD9977 Placebo Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 7	AZD9977 oral suspension	Period 1: fludrocortisone + AZD9977 Period 2: fludrocortisone + AZD9977 Placebo Period 3: fludrocortisone + eplerenone + AZD9977 Placebo Period 4: fludrocortisone + eplerenone + AZD9977 Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 7	AZD9977 placebo oral suspension	Period 1: fludrocortisone + AZD9977 Period 2: fludrocortisone + AZD9977 Placebo Period 3: fludrocortisone + eplerenone + AZD9977 Placebo Period 4: fludrocortisone + eplerenone + AZD9977 Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 7	Fludrocortisone, tablets	Period 1: fludrocortisone + AZD9977 Period 2: fludrocortisone + AZD9977 Placebo Period 3: fludrocortisone + eplerenone + AZD9977 Placebo Period 4: fludrocortisone + eplerenone + AZD9977 Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 8	Fludrocortisone, tablets	Period 1: fludrocortisone + eplerenone + AZD9977 Placebo Period 2: fludrocortisone + AZD9977 Period 3: fludrocortisone + eplerenone + AZD9977 Period 4: fludrocortisone + AZD9977 Placebo Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 8	Eplerenone, tablets	Period 1: fludrocortisone + eplerenone + AZD9977 Placebo Period 2: fludrocortisone + AZD9977 Period 3: fludrocortisone + eplerenone + AZD9977 Period 4: fludrocortisone + AZD9977 Placebo Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 3	Fludrocortisone, tablets	Period 1: fludrocortisone + AZD9977 Period 2: fludrocortisone + AZD9977 Placebo Period 3: fludrocortisone + eplerenone + AZD9977 Placebo Period 4: fludrocortisone + eplerenone + AZD9977 Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 5	AZD9977 placebo oral suspension	Period 1: fludrocortisone + eplerenone + AZD9977 Period 2: fludrocortisone + eplerenone + AZD9977 Placebo Period 3: fludrocortisone + AZD9977 Placebo Period 4: fludrocortisone + AZD9977 Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 5	Eplerenone, tablets	Period 1: fludrocortisone + eplerenone + AZD9977 Period 2: fludrocortisone + eplerenone + AZD9977 Placebo Period 3: fludrocortisone + AZD9977 Placebo Period 4: fludrocortisone + AZD9977 Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 6	AZD9977 placebo oral suspension	Period 1: fludrocortisone + AZD9977 Placebo Period 2: fludrocortisone + eplerenone + AZD9977 Period 3: fludrocortisone + AZD9977 Period 4: fludrocortisone + eplerenone + AZD9977 Placebo Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 6	Fludrocortisone, tablets	Period 1: fludrocortisone + AZD9977 Placebo Period 2: fludrocortisone + eplerenone + AZD9977 Period 3: fludrocortisone + AZD9977 Period 4: fludrocortisone + eplerenone + AZD9977 Placebo Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 4	Fludrocortisone, tablets	Period 1: fludrocortisone + eplerenone + AZD9977 Placebo Period 2: fludrocortisone + eplerenone + AZD9977 Period 3: fludrocortisone + AZD9977 Period 4: fludrocortisone + AZD9977 Placebo Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 6	AZD9977 oral suspension	Period 1: fludrocortisone + AZD9977 Placebo Period 2: fludrocortisone + eplerenone + AZD9977 Period 3: fludrocortisone + AZD9977 Period 4: fludrocortisone + eplerenone + AZD9977 Placebo Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 7	Eplerenone, tablets	Period 1: fludrocortisone + AZD9977 Period 2: fludrocortisone + AZD9977 Placebo Period 3: fludrocortisone + eplerenone + AZD9977 Placebo Period 4: fludrocortisone + eplerenone + AZD9977 Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 8	AZD9977 oral suspension	Period 1: fludrocortisone + eplerenone + AZD9977 Placebo Period 2: fludrocortisone + AZD9977 Period 3: fludrocortisone + eplerenone + AZD9977 Period 4: fludrocortisone + AZD9977 Placebo Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 4	Eplerenone, tablets	Period 1: fludrocortisone + eplerenone + AZD9977 Placebo Period 2: fludrocortisone + eplerenone + AZD9977 Period 3: fludrocortisone + AZD9977 Period 4: fludrocortisone + AZD9977 Placebo Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 6	Eplerenone, tablets	Period 1: fludrocortisone + AZD9977 Placebo Period 2: fludrocortisone + eplerenone + AZD9977 Period 3: fludrocortisone + AZD9977 Period 4: fludrocortisone + eplerenone + AZD9977 Placebo Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment
Treatment Sequence 8	AZD9977 placebo oral suspension	Period 1: fludrocortisone + eplerenone + AZD9977 Placebo Period 2: fludrocortisone + AZD9977 Period 3: fludrocortisone + eplerenone + AZD9977 Period 4: fludrocortisone + AZD9977 Placebo Period 5: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment Period 6: fludrocortisone + eplerenone and/or AZD9977 or AZD9977 Placebo treatment

Primary Outcome Measures

Name	Time	Method
Pharmacodynamics of AZD9977 Assessed Per Sodium/Potassium Ratio in Urine in Eplerenone Treatment Versus a Combination Treatment of Eplerenone and AZD9977.	From 2 hours post dose to 8 hours post dose	The sum over the urine collection intervals of the logarithm of the urinary sodium/potassium ratio from two hours to eight hours post-dose. NOTE: Data are presented as the sum of the difference between ln(Na+) and ln(K+) over the collected intervals 2-4, 4-6 and 6-8 hours.

Secondary Outcome Measures

Name	Time	Method
Time to Reach Maximum Concentration (Tmax) of AZD9977.	From 2 hours post dose to 8 hours post dose	Pre IMP dose and post IMP dose at 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 16 and 24 hours
Number of Participants With Clinically Significant Pulse Rate.	From screening to post-study visit, up to 10 weeks	Clinically significant pulse rate (if available) was recorded for all participants in the study. The pulse was obtained after each subject had rested in the supine position for at least 5 minutes and was performed in accordance with the Schedule of Assessments of study protocol. Abnormal findings in pulse rate, after 10 minutes resting in the supine position, was defined as following: • Pulse \< 45 or \> 85 beats per minute (bpm)
Number of Participants With Clinically Significant Physical Examination Values.	From screening to post-study visit, up to 10 weeks	Number of participants with clinically significant physical examination values. The complete physical examinations included an assessment of the general appearance, respiratory, cardiovascular, abdomen, skin, head, and neck (including ears, eyes, nose, mouth and throat), lymph nodes, thyroid, musculoskeletal and neurological systems. The brief physical examinations included an assessment of the general appearance, skin, abdomen, cardiovascular and respiratory systems. The results of the physical examination were listed by body system for each subject. Body weight was listed by participant and time-point. Any new or aggravated clinically relevant abnormal medical finding at a physical examination as compared with the baseline assessment were reported as an adverse event (AE).
Pharmacodynamics of AZD9977 Assessed by Estimating the Fractional Sodium Excretion in Urine for Each Urine Collection Time Interval.	From 0 to 8 hours after dosing	Pharmacodynamics of AZD9977 by assessment of fractional sodium excretion in urine for each urine collection time interval. Pharmacodynamics of AZD9977 after single dosing of AZD9977 with fludrocortisone and/or eplerenone.
Pharmacodynamics of AZD9977 Assessed Per Total Sodium Excreted Cumulatively and During Each of the Urine Collection Intervals.	From 0 to 24 hours after dosing	Pharmacodynamics of AZD9977 by assessment of total sodium excreted cumulatively and during each of the urine collection intervals. Pharmacodynamics of AZD9977 after single dosing of AZD9977 with fludrocortisone and/or eplerenone.
Area Under the Plasma Concentration-time Curve From Time Zero to t Hours After Dosing (AUC[0-t]) of AZD9977.	From 2 hours post dose to 8 hours post dose	Pre IMP dose and post IMP dose at 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 16 and 24 hours
Observed Maximum Concentration (Cmax) of AZD9977	From 2 hours post dose to 8 hours post dose	Pre IMP dose and post IMP dose at 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 16 and 24 hours
Area Under Plasma Concentration-time Curve From Zero Extrapolated to Infinity (AUC) of AZD9977.	From 2 hours post dose to 8 hours post dose	Pre IMP dose and post IMP dose at 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 16 and 24 hours
Apparent Clearance (CL/F) of AZD9977.	From 2 hours post dose to 8 hours post dose	Pre IMP dose and post IMP dose at 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 16 and 24 hours
Apparent Volume of Distribution at Terminal Phase (Vz/F) of AZD9977.	From 2 hours post dose to 8 hours post dose	Pre IMP dose and post IMP dose at 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 16 and 24 hours
Apparent Volume of Distribution at Terminal Phase (Vz/F) of Eplerenone.	From 2 hours post dose to 8 hours post dose	Pre IMP dose and post IMP dose at 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 16 and 24 hours
Apparent Clearance (CL/F) of Eplerenone.	From 2 hours post dose to 8 hours post dose	Pre IMP dose and post IMP dose at 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 16 and 24 hours
Terminal Half-life (t½λz) of Eplerenone.	From 2 hours post dose to 8 hours post dose	Pre IMP dose and post IMP dose at 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 16 and 24 hours
Area Under the Plasma Concentration-time Curve From Time Zero to t Hours After Dosing (AUC(0-t)) of Eplerenone.	From 2 hours post dose to 8 hours post dose	Pre IMP dose and post IMP dose at 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 16 and 24 hours
Area Under Plasma Concentration-time Curve From Zero Extrapolated to Infinity (AUC) of Eplerenone.	From 2 hours post dose to 8 hours post dose	Pre IMP dose and post IMP dose at 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 16 and 24 hours
Pharmacodynamics of AZD9977 Assessed Per Sodium/Potassium Ratio in Urine in AZD9977 Treatment With Placebo Versus Treatment With AZD9977.	From 2 hours post dose to 8 hours post dose	The sum over the urine collection intervals of the logarithm of the urinary sodium/potassium ratio from two hours to eight hours post-dose. NOTE: Note: Data are presented as the sum of the difference between ln(Na+) and ln(K+) over the collected intervals 2-4, 4-6 and 6-8 hours.
Terminal Half-life (t½λz) of AZD9977.	From 2 hours post dose to 8 hours post dose	Pre IMP dose and post IMP dose at 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 16 and 24 hours
Time to Reach Maximum Concentration (Tmax) of Eplerenone.	From 2 hours post dose to 8 hours post dose	Pre IMP dose and post IMP dose at 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 16 and 24 hours
Observed Maximum Concentration (Cmax) of Eplerenone.	From 2 hours post dose to 8 hours post dose	Pre IMP dose and post IMP dose at 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 16 and 24 hours
Number of Participants With Clinically Significant Blood Pressure Values.	From screening to post-study visit, up to 10 weeks	Clinically significant blood pressure values (if available) were recorded for all participants. The systolic blood pressure (mmHg) and diastolic BP (mmHg) was obtained after each subject had rested in the supine position for at least 5 minutes and was performed in accordance with the Schedule of Assessments of study protocol. Abnormal findings in blood pressure after 10 minutes resting in the supine position was defined as following: * Systolic blood pressure (SBP) \< 90 mmHg or ≥ 140 mmHg * Diastolic blood pressure (DBP) \< 50 mmHg or ≥ 90 mmHg.
Number of Participants With Clinically Significant Electrocardiogram.	From screening to post-study visit, up to 10 weeks	Clinically significant electrocardiogram values were recorded for all participants in the study. A 12-lead ECG was obtained after each subject had rested in the supine position for at least 10 minutes and was performed in accordance with the Schedule of Assessments of study protocol. The investigator judged the overall interpretation as normal or abnormal. If abnormal, it would have been decided as to whether or not the abnormality was clinically significant and the reason for the abnormality would have been recorded. The investigator could add extra 12-lead resting ECG safety assessments if there were any abnormal findings of if the investigator considered it was necessary for any other safety reason. These assessments would have been entered as an unscheduled assessment.
Pharmacodynamics of AZD9977 by Assessment of Total Urine Volume Excreted Cumulatively and During Each of the Urine Collection Intervals	From 8 hours before dosing until 24 hours after dosing	Pharmacodynamics of AZD9977 by assessment of total urine volume excreted cumulatively and during each of the urine collection intervals. Pharmacodynamics of AZD9977 after single dosing of AZD9977 with fludrocortisone and/or eplerenone
Number of Participants With Clinically Significant Safety Laboratory Tests Values.	From screening to post-study visit, up to 10 weeks	Clinically significant safety laboratory test values included hematology, clinical chemistry, urinalysis and urine chemistry, including urine creatinine and uric acid measurements. Viral serology and urine drugs of abuse, alcohol and cotinine were assessed for eligibility. If deterioration in laboratory value was associated with clinical symptoms and/or signs, the symptom or sign were reported as an adverse event and the associated laboratory result was considered as additional information. Laboratory results were listed and summarized according to change from baseline and repeat/unscheduled measurements. Any out of range laboratory results were flagged in the individual listings.
Pharmacodynamics of AZD9977 by Assessment of Total Potassium Excreted Cumulatively and During Each of the Urine Collection Intervals	From 0 to 24 hours after dosing	Pharmacodynamics of AZD9977 by assessment of total potassium excreted cumulatively and during each of the urine collection intervals. Pharmacodynamics of AZD9977 after single dosing of AZD9977 with fludrocortisone in comparison to AZD9977 placebo.
Pharmacodynamics of AZD9977 Assessed Per Fractional Potassium Excretion in Urine for Each Urine Collection Time Interval.	From 0 to 8 hours post dosing	Pharmacodynamics of AZD9977 assessed per fractional potassium excretion in urine for each urine collection time interval. Pharmacodynamics of AZD9977 after single dosing of AZD9977 with fludrocortisone and/or eplerenone
Pharmacodynamics of AZD9977 Assessed Per Urine Production for Each Urine Collection Time Interval.	From 8 hours before dosing until 24 hours after dosing	Pharmacodynamics of AZD9977 assessed per urine production for each urine collection time interval. Pharmacodynamics of AZD9977 after single dosing of AZD9977 with fludrocortisone and/or eplerenone.