New monthly shot could tame stubborn high blood pressure
NCT ID NCT06864104
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested a monthly injection called tonlamarsen in 206 adults whose blood pressure stays high even after taking two or more daily medications. The goal was to see if the shot can safely lower blood pressure and reduce a protein linked to hypertension. Results will show whether this approach might help people who need extra control.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Tonlamarsen (a monthly injection)
- What this could lead to
- If it works, this could offer a new monthly injection option for people whose blood pressure remains high despite taking multiple daily pills.
- What could go wrong
- This is a Phase 2 trial with only 206 participants, so results may not apply to everyone. The drug may not lower blood pressure enough or could cause side effects like high potassium levels.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
-
206 people
The number who actually took part.
- Started
-
Apr 2025
- Finished
-
Mar 2026
- Lead sponsor
-
A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 to 80 years
- Sex
-
Anyone
- Healthy volunteers
-
Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Key Inclusion Criteria: * Age 18 to 80, body weight ≥ 50 kg * Has uncontrolled hypertension while receiving between 2 and 5 antihypertensive medications prescribed for hypertension * Has mean office seated systolic blood pressure \> 135 to ≤ 170 mmHg Key Exclusion Criteria: * Has known history of secondary hypertension * Has documented history of poor adherence to antihypertensive medication * Has unstable/underlying known cardiovascular disease * Has abnormal thyroid function with clinical significance
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Achieve Clinical Research, LLC
Birmingham, Alabama, 35216, United States
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ActivMed Practices & Research, LLC
Methuen, Massachusetts, 01844, United States
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Advanced Medical Trials, LLC
Georgetown, Texas, 78628, United States
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Agile Clinical Research Trials, LLC
Atlanta, Georgia, 30328, United States
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American Institute of Research
Los Angeles, California, 90017, United States
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CHEAR Center LLC
The Bronx, New York, 10455, United States
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Cardiology and Medicine Clinic
Little Rock, Arkansas, 72204, United States
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Central Texas Clinical Research
Austin, Texas, 78705, United States
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Clinical Investigation Specialists, Inc.
Gurnee, Illinois, 60031, United States
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Clinical Trials Research
Lincoln, California, 95648, United States
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Clinical Trials of South Carolina
Moncks Corner, South Carolina, 29461, United States
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Del Sol Research Management, LLC
Tucson, Arizona, 85715, United States
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DelRicht Clinical Research - New Orleans
New Orleans, Louisiana, 70115, United States
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Eagle Clinical Research
Chicago, Illinois, 60621, United States
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Elite Clinical Studies
Phoenix, Arizona, 85018, United States
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Health Concepts
Rapid City, South Dakota, 57702, United States
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Holston Medical Group
Kingsport, Tennessee, 37660, United States
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Homestead Associates in Research, Inc.
Homestead, Florida, 33033, United States
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IMA Clinical Research
Monroe, Louisiana, 71201, United States
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IMA Clinical Research
Lenoir, North Carolina, 28645, United States
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Jacksonville Center for Clinical Research
Jacksonville, Florida, 32216, United States
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Juno Research, LLC
Houston, Texas, 77040, United States
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Koch Family Medicine Clinical Research
Morton, Illinois, 61550, United States
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Manassas Clinical Research Center
Manassas, Virginia, 20110, United States
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North Coast Cardiology
Encinitas, California, 92024, United States
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North Hills Medical Research
North Richland Hills, Texas, 76180, United States
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Oakland Medical Research Center
Troy, Michigan, 48085, United States
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Olive Branch Family Medical Center
Olive Branch, Mississippi, 38654, United States
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Orange County Research Center
Lake Forest, California, 92630, United States
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Pinnacle Research Group
Anniston, Alabama, 36207, United States
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Progressive Medical Research
Port Orange, Florida, 32127, United States
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Radiance Clinical Research
Lampasas, Texas, 76550, United States
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Richmond University Medical Center
Staten Island, New York, 10310, United States
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Sun Research Institute
San Antonio, Texas, 78215, United States
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Suncoast Clinical Research, Inc.
New Port Richey, Florida, 34652, United States
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Synergy Groups Medical, LLC
Missouri City, Texas, 77459, United States
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Tandem Clinical Research GI, LLC
Marrero, Louisiana, 70072, United States
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Velocity Clinical Reseach
Savannah, Georgia, 31406, United States
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York Clinical Research LLC
Norfolk, Virginia, 23504, United States
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