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CompletedNCT04083222Updated Jan 18, 2023Results posted

A Study to Assess the Safety, Tolerability and Efficacy of IONIS-AGT-LRx

A Phase 2 interventional study of Placebo and ISIS 757456 in Hypertension, sponsored by Ionis Pharmaceuticals, Inc.. Completed at 9 sites in United States. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2023-01-18.

Sponsored by Ionis Pharmaceuticals, Inc. · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
26
Allocation
Randomized
Ages
18 Years to 75 Years
Sex
All
01

Study summary

This study evaluated the effect of ISIS 757456 (IONIS-AGT-LRx) on plasma angiotensinogen (AGT) and systolic blood pressure (SBP) in uncontrolled hypertensive participants who were on two to three antihypertensive medications.

Read the detailed description

This study was a Phase 2, double-blind, randomized, placebo-controlled study in 26 participants. Participants were randomized in a 2:1 ratio and received a once-weekly subcutaneous (SC) treatment with either IONIS-AGT-LRx or placebo, with an additional loading dose administered on Study Day 3. The treatment lasted for 8 weeks and the post-treatment period lasted for 13 weeks.

02

Conditions studied

  • Hypertension

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Keywords

  • Hypertension
  • Hypertensive
  • AGT
  • Angiotensinogen
  • Blood Pressure
03

In context

Hypertension

6,689 studies on the registry are indexed under Hypertension; 965 are open to participants now.

This study's enrollment of 26 is below the median of 90 across 4,995 interventional studies indexed under Hypertension.

Browse Hypertension studies →

Lead sponsor

Ionis Pharmaceuticals, Inc. is the lead sponsor of 116 studies on the registry; 10 are open to participants now.

Of its 48 completed or terminated interventional studies of FDA-regulated products, 21 (44%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Males or females aged 18-75 inclusive and weighing ≥ 50 kilograms (kg) at the time of informed consent
  • Females must be non-pregnant and non-lactating, and either surgically sterile or post-menopausal
  • Males must be surgically sterile or, abstinent or, if engaged in sexual relations with a woman of child-bearing potential (WOCBP), the participant or participant's non-pregnant female partner must be using a highly effective contraceptive method
  • Body mass index (BMI) ≤ 35.0 kg/square meter (m\^2)
  • Participant must have been diagnosed with essential hypertension for a minimum of 3 months prior to screening
  • At screening, the participant must have been on a stable regimen of 2 to 3 antihypertensive medications for at least 1 month prior to screening and will be required to maintain this regimen throughout the study, using either an angiotensin-converting enzyme inhibitor (ACEi) or an angiotensin II receptor blocker (ARB), as well as 1 or 2 additional antihypertensive medications in the following categories: beta blocker, acebutolol, atenolol, betaxolol, bisoprolol, carvedilol, labetalol, metoprolol, nadolol, nebivolol, propranolol, pindolol, calcium channel blocker or, non-potassium sparing diuretic

Exclusion criteria

Exclusion Criteria:

  • Clinically significant abnormalities in medical history, screening laboratory results, or physical examination that would render the participant unsuitable for inclusion
  • History of secondary hypertension (HTN)

The use of the following at time of screening and during the course of the study:

  • Other medications for the treatment of HTN (e.g., clonidine, guanfacine, guanabenz, alpha-methyldopa, hydralazine, minoxidil, diazoxide, renin inhibitors)
  • Medications that may cause hyperkalemia (e.g., cyclosporine or tacrolimus, pentamidine, trimethoprim-sulfamethoxazole, all heparins)
  • Oral or SC anticoagulants (e.g., warfarin, rivaroxaban, apixaban, heparin, lovenox)
  • Organic nitrate preparations (e.g., nitroglycerin, isosorbide mononitrate, isosorbide dinitrate, or pentaerythritol)
  • Phosphodiesterase 5 inhibitors (e.g., sildenafil, tadalafil, vardenafil, avanafil)
  • Potassium-sparing diuretics (e.g., eplerenone, spironolactone, amiloride, triamterene)

Unstable/underlying cardiovascular disease defined as:

  • Any history of congestive heart failure (New York Heart Association [NYHA] class II-IV)
  • Any history of previous stroke, transient ischemic attack, unstable or stable angina pectoris, or myocardial infarction prior to screening
  • 12-lead electrocardiogram (ECG) corrected using Fridericia's formula (QTcF) > 450 milliseconds (msec) in males and > 470 msec in females at screening, or a history or evidence of long QT syndrome
  • Any clinically significant active atrial or ventricular arrhythmias
  • Any history of coronary bypass or percutaneous coronary intervention
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
26 participants (actual)

Study arms

  • Placebo comparator
    Placebo

    Participants received ISIS 757456-matching placebo, subcutaneous (SC) injection, once-weekly for 8 weeks and an additional loading dose on Day 3.

    Drug: Placebo

  • Experimental
    ISIS 757456

    Participants received ISIS 757456 80 mg, SC injection, once-weekly for 8 weeks and an additional loading dose on Day 3.

    Drug: ISIS 757456

Interventions

  • DrugPlacebo

    ISIS 757456-matching placebo solution administered as SC injection.

  • DrugISIS 757456

    ISIS 757456 administered as SC injection.

06

What researchers measure

Primary outcomes

  1. Percent Change From Baseline in Plasma Angiotensinogen (AGT) at Day 57 Compared to Placebo

    The baseline for plasma AGT was defined as the average of all values prior to the first dose of study drug.

    Time frame: Baseline up to Day 57 (start of Week 9)

Secondary outcomes

  1. Change From Baseline in Systolic Blood Pressure (SBP) at Each Scheduled, Post-Baseline Visit

    Time frame: Baseline, Days 3, 8, 15, 22, 29, 36, 43, 50, 57, 64, 78, 92, 120, and 141

  2. Absolute Change From Baseline in Plasma AGT at Each Scheduled, Post-Baseline Visit

    The baseline for plasma AGT was defined as the average of all values prior to the first dose of study drug

    Time frame: Baseline, Days 3, 8, 15, 22, 29, 36, 43, 50, 57, 64, 78, 92, 120, and 141

  3. Percent Change From Baseline in Plasma AGT at Each Scheduled, Post-Baseline Visit

    The baseline for plasma AGT was defined as the average of all values prior to the first dose of study drug.

    Time frame: Baseline, Days 3, 8, 15, 22, 29, 36, 43, 50, 64, 78, 92, 120, and 141

07

Results

Posted Jan 18, 2023

Participant flow

Participants took part in the study at 9 investigative sites from 13 November 2019 to 20 July 2020.

Participant flow — Overall Study
MilestonePlaceboISIS 757456
Started818
Completed816
Not completed02
Withdrew: Voluntary withdrawal01
Withdrew: Reason not specified01

Outcome measures

PrimaryPercent Change From Baseline in Plasma Angiotensinogen (AGT) at Day 57 Compared to Placebo

The baseline for plasma AGT was defined as the average of all values prior to the first dose of study drug.

Time frame:
Baseline up to Day 57 (start of Week 9)
Reported as:
Mean · percent change
Percent Change From Baseline in Plasma Angiotensinogen (AGT) at Day 57 Compared to Placebo
percent changePlaceboISIS 757456
Percent Change From Baseline in Plasma Angiotensinogen (AGT) at Day 57 Compared to Placebo-3.4 ± 17.8-67.4 ± 14.1
Statistical analysis
  • Placebo vs ISIS 757456 · ANOVA · p = < 0.001 (P-value was analyzed using Analysis of Variance (ANOVA) with treatment and screening angiotensin-converting enzyme inhibitor/ angiotensin receptor blockers (ACEi/ARB) dose status stratification factor.)
SecondaryChange From Baseline in Systolic Blood Pressure (SBP) at Each Scheduled, Post-Baseline Visit
Time frame:
Baseline, Days 3, 8, 15, 22, 29, 36, 43, 50, 57, 64, 78, 92, 120, and 141
Reported as:
Mean · mmHg
Change From Baseline in Systolic Blood Pressure (SBP) at Each Scheduled, Post-Baseline Visit
mmHgPlaceboISIS 757456
Baseline152 ± 8153 ± 10
Change From Baseline at Day 3-6 ± 15-12 ± 14
Change From Baseline at Day 8-8 ± 9-14 ± 15
Change From Baseline at Day 15-0 ± 16-9 ± 13
Change From Baseline at Day 22-8 ± 15-8 ± 16
Change From Baseline at Day 293 ± 14-8 ± 16
Change From Baseline at Day 360 ± 15-13 ± 15
Change From Baseline at Day 43-2 ± 9-11 ± 12
Change From Baseline at Day 50-3 ± 12-17 ± 16
Change From Baseline at Day 57-5 ± 10-12 ± 16
Change From Baseline at Day 64-8 ± 16-16 ± 11
Change From Baseline at Day 78-8 ± 14-12 ± 13
Change From Baseline at Day 92-5 ± 13-15 ± 15
Change From Baseline at Day 120-3 ± 10-10 ± 14
Change From Baseline at Day 1410 ± 13-11 ± 13
Statistical analysis
  • Placebo vs ISIS 757456 · ANOVA · p = 0.399 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = 0.338 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = 0.207 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = 0.927 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = 0.146 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = 0.055 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = 0.095 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = 0.046 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = 0.246 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = 0.170 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = 0.527 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = 0.167 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = 0.266 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = 0.078 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
SecondaryAbsolute Change From Baseline in Plasma AGT at Each Scheduled, Post-Baseline Visit

The baseline for plasma AGT was defined as the average of all values prior to the first dose of study drug

Time frame:
Baseline, Days 3, 8, 15, 22, 29, 36, 43, 50, 57, 64, 78, 92, 120, and 141
Reported as:
Mean · ug/mL
Absolute Change From Baseline in Plasma AGT at Each Scheduled, Post-Baseline Visit
ug/mLPlaceboISIS 757456
Baseline25.5 ± 4.425.2 ± 3.4
Change From Baseline at Day 3-1.7 ± 2.3-2.5 ± 4.2
Change From Baseline at Day 8-1.5 ± 3.1-9.6 ± 4.3
Change From Baseline at Day 15-1.6 ± 2.1-13.4 ± 5.7
Change From Baseline at Day 22-0.7 ± 1.6-15.7 ± 4.7
Change From Baseline at Day 29-0.8 ± 3.9-17.1 ± 4.0
Change From Baseline at Day 36-2.0 ± 2.6-17.2 ± 4.0
Change From Baseline at Day 43-2.9 ± 2.5-17.5 ± 3.7
Change From Baseline at Day 50-2.2 ± 3.2-17.7 ± 3.8
Change From Baseline at Day 57-1.1 ± 4.5-17.0 ± 4.1
Change From Baseline at Day 64-4.3 ± 3.7-15.9 ± 3.7
Change From Baseline at Day 78-3.0 ± 3.1-12.9 ± 3.9
Change From Baseline at Day 92-1.7 ± 3.9-9.8 ± 4.2
Change From Baseline at Day 120-3.1 ± 1.9-5.7 ± 4.0
Change From Baseline at Day 141-3.4 ± 4.7-5.8 ± 5.3
Statistical analysis
  • Placebo vs ISIS 757456 · ANOVA · p = 0.661 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = <0.001 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = <0.001 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = <0.001 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = <0.001 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = <0.001 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = <0.001 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = <0.001 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = <0.001 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = <0.001 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = <0.001 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = <0.001 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = 0.106 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = 0.318 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
SecondaryPercent Change From Baseline in Plasma AGT at Each Scheduled, Post-Baseline Visit

The baseline for plasma AGT was defined as the average of all values prior to the first dose of study drug.

Time frame:
Baseline, Days 3, 8, 15, 22, 29, 36, 43, 50, 64, 78, 92, 120, and 141
Reported as:
Mean · percent change
Percent Change From Baseline in Plasma AGT at Each Scheduled, Post-Baseline Visit
percent changePlaceboISIS 757456
Percent Change From Baseline at Day 3-6.6 ± 9.5-10.3 ± 16.6
Percent Change From Baseline at Day 8-4.8 ± 12.9-38.5 ± 16.6
Percent Change From Baseline at Day 15-6.6 ± 8.1-53.3 ± 22.1
Percent Change From Baseline at Day 22-2.4 ± 6.3-62.4 ± 17.9
Percent Change From Baseline at Day 29-2.8 ± 15.5-67.9 ± 13.5
Percent Change From Baseline at Day 36-8.1 ± 10.2-68.4 ± 13.9
Percent Change From Baseline at Day 43-10.6 ± 8.2-69.5 ± 11.3
Percent Change From Baseline at Day 50-7.9 ± 11.4-70.3 ± 11.1
Percent Change From Baseline at Day 64-18.0 ± 15.5-63.5 ± 14.0
Percent Change From Baseline at Day 78-12.3 ± 12.2-51.1 ± 14.5
Percent Change From Baseline at Day 92-6.6 ± 14.5-38.9 ± 15.7
Percent Change From Baseline at Day 120-12.4 ± 7.7-22.1 ± 14.9
Percent Change From Baseline at Day 141-14.3 ± 17.4-22.3 ± 19.8
Statistical analysis
  • Placebo vs ISIS 757456 · ANOVA · p = 0.609 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = <0.001 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = <0.001 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = <0.001 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = <0.001 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = <0.001 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = <0.001 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = <0.001 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = <0.001 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = <0.001 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = <0.001 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = 0.112 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)
  • Placebo vs ISIS 757456 · ANOVA · p = 0.371 (P-value was analyzed using ANOVA with treatment and screening ACE/ARB dose status stratification factor.)

Adverse events

Collected over From signing of informed consent up to end of post-treatment period (Day 141). Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Placebo0/8 (0%)0/8 (0%)3/8 (37.5%)
ISIS 7574560/18 (0%)0/18 (0%)6/18 (33.3%)
Most frequent other events
Showing 10 of 27
Most frequent other events
EventPlaceboISIS 757456
Abdominal discomfortGastrointestinal disorders1/80/18
DiarrhoeaGastrointestinal disorders1/80/18
DyspepsiaGastrointestinal disorders1/80/18
NauseaGastrointestinal disorders1/80/18
ChillsGeneral disorders1/80/18
ConfusionInjury, poisoning and procedural complications1/80/18
Diabetes mellitusMetabolism and nutrition disorders1/80/18
ArthritisMusculoskeletal and connective tissue disorders1/80/18
Back painMusculoskeletal and connective tissue disorders1/80/18
Musculoskeletal chest painMusculoskeletal and connective tissue disorders1/80/18

Baseline characteristics

Safety set included all participants who were randomized and received at least 1 dose of study drug.

Age, Continuous
Age, Continuous(years)PlaceboISIS 757456Total
Mean61 ± 1060 ± 860 ± 9
Sex: Female, Male
Sex: Female, Male(Participants)PlaceboISIS 757456Total
Female61420
Male246
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)PlaceboISIS 757456Total
Hispanic or Latino2810
Not Hispanic or Latino61016
Unknown or Not Reported000
Race (NIH/OMB)
Race (NIH/OMB)(Participants)PlaceboISIS 757456Total
American Indian or Alaska Native000
Asian000
Native Hawaiian or Other Pacific Islander000
Black or African American437
White41519
More than one race000
Unknown or Not Reported000
Plasma Angiotensinogen (AGT)
Plasma Angiotensinogen (AGT)(micrograms per milliliter (μg/mL))PlaceboISIS 757456Total
Mean25.5 ± 4.425.2 ± 3.425.3 ± 3.7
08

Study locations

9 sites
  • Central Alabama Research
    Birmingham, Alabama 35209, United States
  • National Research Institute - Wilshire
    Los Angeles, California 90057, United States
  • Orange County Research Center
    Tustin, California 92780, United States
  • Excel Medical Clinical Trials
    Boca Raton, Florida 33434, United States
  • Progressive Medical Research
    Port Orange, Florida 32127, United States
  • Midwest Institute for Clinical Research
    Indianapolis, Indiana 46260, United States
  • Ohio Clinical Research - Lyndhurst
    Lyndhurst, Ohio 44124, United States
  • Juno Research, LLC
    Houston, Texas 77040, United States
  • York Clinical Research LLC
    Norfolk, Virginia 23510, United States
09

References and documents

Study documents

  • Protocol and statistical analysis plan · Dec 4, 2019

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 18, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT04083222
Lead sponsor
Ionis Pharmaceuticals, Inc.
Responsible party
Sponsor
First posted
Sep 10, 2019
Start date
Nov 13, 2019
Primary completion
Jul 20, 2020
Completion
Jul 20, 2020
Results posted
Jan 18, 2023
Last update
Jan 18, 2023

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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