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A Study of RGLS8429 in Healthy Volunteers

A Phase 1, Double-Blind, Placebo-Controlled, Single Ascending Dose Study in Healthy Volunteers to Evaluate the Safety, Tolerability, and Pharmacokinetics of RGLS8429

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05429073
Enrollment
32
Registered
2022-06-23
Start date
2022-06-10
Completion date
2022-09-08
Last updated
2025-08-27

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

Conditions

Healthy Volunteers

Keywords

RGLS8429, Autosomal Dominant Polycystic Kidney Disease, ADPKD

Brief summary

Primary Objective • To assess the safety and tolerability of single ascending doses of RGLS8429 Secondary Objectives * To identify dose-limiting toxicity (DLT) and to determine the maximum tolerated dose (MTD) of a single SC dose of RGLS8429 * To characterize the pharmacokinetic (PK) properties of RGLS8429

Detailed description

In this randomized, double-blind, placebo-controlled Phase 1 study, a single ascending dose of RGLS8429 or placebo will be administered via subcutaneous (SC) injection to healthy volunteers to evaluate the safety, tolerability, and PK of RGLS8429.

Interventions

solution for subcutaneous injection

DRUGPlacebo volume-matching RGLS8429 dose

solution for subcutaneous injection

Sponsors

Regulus Therapeutics Inc.
Lead SponsorINDUSTRY

Study design

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

Masking description

This will be a double-blinded, randomized, placebo-controlled study.

Eligibility

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

Inclusion criteria

1. Male or female, 18 to 55 years of age 2. Body mass index (BMI) 18 to 35 kg/m2 3. Medically healthy, with no clinically significant medical history in the opinion of the Investigator 4. Estimated glomerular filtration rate (eGFR) ≥ 90 mL/min/1.73 m2 5. Must understand and consent to the study procedures explained in the informed consent form (ICF) and be willing and able to comply with the protocol

Exclusion criteria

1. Subject is mentally incapacitated or has significant emotional problems 2. Any medical condition or social circumstance that, in the opinion of the Investigator, may make the subject unlikely to complete the study or comply with study procedures and requirements, or may pose a risk to the subject's safety 3. History or presence of alcoholism or drug abuse within the past 2 years prior to Screening 4. Participation in another clinical trial and/or exposure to any investigational drug or approved therapy for investigational use within 28 days or 5 half-lives of the investigational drug's dosing, whichever is longer, prior to dosing. The 28-day and 5-half-life windows will be calculated from the date of the last dosing in the previous study to Day 1 of the current study.

Design outcomes

Primary

MeasureTime frameDescription
Incidence of Adverse Events (AEs)Baseline to Day 29Incidence and severity of adverse events after administration of RGLS8429

Secondary

MeasureTime frameDescription
Incidence of DLT and Determination of MTDBaseline to Day 29Identify dose limiting toxicity and the maximum tolerated dose after RGLS8429 administration
Plasma Half-life (T1/2) of RGLS8429Baseline to Day 15Measure plasma elimination half-life after RGLS8429 administration
Plasma Clearance of RGLS8429Baseline to Day 15Measure plasma clearance after RGLS8429 administration
Area Under the Plasma Concentration vs Time Curve (AUC) of RGLS8429Baseline to Day 15Measure area under the plasma concentration vs time curve after RGLS8429 administration
Amount of RGLS8429 Excreted in UrineBaseline to 24-hourMeasure the amount of RGLS8429 excreted in urine after RGLS8429 administration

Countries

United States

Participant flow

Participants by arm

ArmCount
RGLS8429, First Dose Level
Eligible participants will receive subcutaneous injection of the first dose level RGLS8429. RGLS8429: solution for subcutaneous injection
6
RGLS8429, Second Dose Level
Eligible participants will receive subcutaneous injection of the second dose level RGLS8429. RGLS8429: solution for subcutaneous injection
6
RGLS8429, Third Dose Level
Eligible participants will receive subcutaneous injection of the third dose level RGLS8429. RGLS8429: solution for subcutaneous injection
6
RGLS8429, Fourth Dose Level
Eligible participants will receive subcutaneous injection of the fourth dose level RGLS8429. RGLS8429: solution for subcutaneous injection
6
Matching Placebo
Eligible participants will receive subcutaneous injection of the placebo volume-matching RGLS8429 dose. Placebo volume-matching RGLS8429 dose: solution for subcutaneous injection
8
Total32

Baseline characteristics

CharacteristicRGLS8429, First Dose LevelRGLS8429, Second Dose LevelRGLS8429, Third Dose LevelRGLS8429, Fourth Dose LevelMatching PlaceboTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
6 Participants6 Participants6 Participants6 Participants8 Participants32 Participants
Age, Continuous36.3 Years
STANDARD_DEVIATION 9.48
33.8 Years
STANDARD_DEVIATION 6.68
34.2 Years
STANDARD_DEVIATION 6.18
38.2 Years
STANDARD_DEVIATION 9.28
43.9 Years
STANDARD_DEVIATION 6.58
37.7 Years
STANDARD_DEVIATION 8.2
Ethnicity (NIH/OMB)
Hispanic or Latino
6 Participants4 Participants5 Participants2 Participants7 Participants24 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
0 Participants2 Participants1 Participants4 Participants1 Participants8 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants1 Participants0 Participants1 Participants
Race (NIH/OMB)
Black or African American
0 Participants2 Participants2 Participants0 Participants1 Participants5 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
6 Participants4 Participants4 Participants5 Participants7 Participants26 Participants
Region of Enrollment
United States
6 participants6 participants6 participants6 participants8 participants32 participants
Sex: Female, Male
Female
3 Participants2 Participants5 Participants2 Participants8 Participants20 Participants
Sex: Female, Male
Male
3 Participants4 Participants1 Participants4 Participants0 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 / 60 / 60 / 60 / 8
other
Total, other adverse events
1 / 61 / 63 / 61 / 63 / 8
serious
Total, serious adverse events
0 / 60 / 60 / 60 / 60 / 8

Outcome results

Primary

Incidence of Adverse Events (AEs)

Incidence and severity of adverse events after administration of RGLS8429

Time frame: Baseline to Day 29

Population: Safety Population: all subjects who received a dose of study drug; subjects were analyzed based on treatment received

ArmMeasureGroupValue (NUMBER)
RGLS8429, First Dose LevelIncidence of Adverse Events (AEs)Number of subjects with Grade 3, 4 or 5 treatment-emergent adverse events0 participants
RGLS8429, First Dose LevelIncidence of Adverse Events (AEs)Number of subjects with Treatment-emergent adverse events leading to discontinuation0 participants
RGLS8429, First Dose LevelIncidence of Adverse Events (AEs)Number of Subjects with Serious Adverse Events or deaths0 participants
RGLS8429, First Dose LevelIncidence of Adverse Events (AEs)Number of subjects with at least one treatment-emergent adverse event1 participants
RGLS8429, Second Dose LevelIncidence of Adverse Events (AEs)Number of subjects with Grade 3, 4 or 5 treatment-emergent adverse events0 participants
RGLS8429, Second Dose LevelIncidence of Adverse Events (AEs)Number of subjects with at least one treatment-emergent adverse event1 participants
RGLS8429, Second Dose LevelIncidence of Adverse Events (AEs)Number of subjects with Treatment-emergent adverse events leading to discontinuation0 participants
RGLS8429, Second Dose LevelIncidence of Adverse Events (AEs)Number of Subjects with Serious Adverse Events or deaths0 participants
RGLS8429, Third Dose LevelIncidence of Adverse Events (AEs)Number of subjects with at least one treatment-emergent adverse event3 participants
RGLS8429, Third Dose LevelIncidence of Adverse Events (AEs)Number of subjects with Treatment-emergent adverse events leading to discontinuation0 participants
RGLS8429, Third Dose LevelIncidence of Adverse Events (AEs)Number of Subjects with Serious Adverse Events or deaths0 participants
RGLS8429, Third Dose LevelIncidence of Adverse Events (AEs)Number of subjects with Grade 3, 4 or 5 treatment-emergent adverse events0 participants
RGLS8429, Fourth Dose LevelIncidence of Adverse Events (AEs)Number of subjects with Grade 3, 4 or 5 treatment-emergent adverse events0 participants
RGLS8429, Fourth Dose LevelIncidence of Adverse Events (AEs)Number of subjects with Treatment-emergent adverse events leading to discontinuation0 participants
RGLS8429, Fourth Dose LevelIncidence of Adverse Events (AEs)Number of subjects with at least one treatment-emergent adverse event1 participants
RGLS8429, Fourth Dose LevelIncidence of Adverse Events (AEs)Number of Subjects with Serious Adverse Events or deaths0 participants
Matching PlaceboIncidence of Adverse Events (AEs)Number of subjects with at least one treatment-emergent adverse event3 participants
Matching PlaceboIncidence of Adverse Events (AEs)Number of Subjects with Serious Adverse Events or deaths0 participants
Matching PlaceboIncidence of Adverse Events (AEs)Number of subjects with Treatment-emergent adverse events leading to discontinuation0 participants
Matching PlaceboIncidence of Adverse Events (AEs)Number of subjects with Grade 3, 4 or 5 treatment-emergent adverse events0 participants
Secondary

Amount of RGLS8429 Excreted in Urine

Measure the amount of RGLS8429 excreted in urine after RGLS8429 administration

Time frame: Baseline to 24-hour

Secondary

Area Under the Plasma Concentration vs Time Curve (AUC) of RGLS8429

Measure area under the plasma concentration vs time curve after RGLS8429 administration

Time frame: Baseline to Day 15

Secondary

Incidence of DLT and Determination of MTD

Identify dose limiting toxicity and the maximum tolerated dose after RGLS8429 administration

Time frame: Baseline to Day 29

Secondary

Plasma Clearance of RGLS8429

Measure plasma clearance after RGLS8429 administration

Time frame: Baseline to Day 15

Secondary

Plasma Half-life (T1/2) of RGLS8429

Measure plasma elimination half-life after RGLS8429 administration

Time frame: Baseline to Day 15

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