Phase 1 Study of BLKR201 in Healthy Adults

This study is testing a drug called BLKR201 in healthy adults aged 18 to 55. The main goals are to find out if BLKR201 is safe when taken as a single dose or for several days, how your body handles the drug, and if food changes how your body absorbs it. You would receive either BLKR201 or a placebo (a tablet with no drug). Researchers will check for any side effects and changes in your blood pressure and lab results. This study aims to enroll 128 participants.

Study design
This is an interventional Phase 1 study comparing BLKR201 to a placebo in healthy adults. It plans to enroll 128 participants.
What's involved
You would need to stay at the research unit for required study visits and follow rules about diet, alcohol, tobacco, and medications.
Compensation
Not stated in the trial record.
Follow-up
Researchers will monitor you for about 7 days after your last dose for side effects and changes in your health.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.

NCT07501039

A Phase 1 Study of BLKR201 in Healthy Adult Participants

Recruiting
PHASE1Ages 18–55Interventional
Formation Bio, Inc.
~128 participants
Updated 2026-09-02 on ClinicalTrials.gov
What's tested:BLKR201Placebo

At a glance

Recruiting sites
1 of 1 listed site is recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Number of Participants with Treatment-Emergent Adverse Events (TEAEs)
Measured over Baseline through approximately 7 days after final dose
+7 more outcomes measured
Healthy

NCT07501039

Where you'd take part

This study runs at 1 site. They're the same protocol — you choose where, and that choice sets who your contact draft is addressed to.

  • Celerion

    Lincoln, Nebraskastudy coordinator listed

    Recruiting

Sites open and close at different times, so the status above is per site — it can differ from the study's overall status.

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Eligibility criteria

Inclusion

Are a healthy man or woman 18 to 55 years old
Weigh at least 50 kilograms (110 pounds)
Have a body mass index (BMI) between 18 and 30 kg/m2 (inclusive)
Are willing to stay at the research unit for the required study visits
Are willing to follow study rules about diet, alcohol, tobacco, and medications
Are able to understand and sign the informed consent form
Have a negative pregnancy test before starting
Use a highly effective form of birth control during the study and for a period after the last dose
Use highly effective birth control during the study and for a period after the last dose
Not donate sperm during that time

Exclusion

Have any significant medical condition involving the heart, lungs, liver, kidneys, stomach, intestines, brain, blood, or immune system
Have abnormal laboratory test results at screening that the study doctor considers important
Have a history of heart rhythm problems or abnormal electrocardiogram (ECG) results
Have high blood pressure at screening
Have had a serious infection within the past 6 months
Test positive for HIV, hepatitis B, hepatitis C, or tuberculosis, or show evidence of hepatitis B infection (positive hepatitis B surface antigen or hepatitis B core antibody). Note: participants with hepatitis B immunity from vaccination alone may still be eligible.
Have a history of cancer in the past 5 years (with limited exceptions for certain treated skin cancers)
Have a history of serious stomach problems such as ulcers, stomach surgery, or stomach bleeding
Use tobacco, nicotine, or marijuana products
Test positive for drugs or alcohol at screening
Have taken another investigational drug within the required time before this study
Have received a live vaccine within 30 days before study start
Are pregnant or breastfeeding
Have a known allergy to the study drug or similar medicines
Regular heavy alcohol use
Regular use of certain medications such as anti-inflammatory drugs, steroids, or blood thinners
Donation of more than 500 milliliters (about one pint) of blood within 1 month before screening
Take blood-thinning medications
Have bleeding or clotting problems
Have sensitivity to lidocaine, band aids, adhesive dressing, or medical tape
Have medical conditions that make a spinal tap unsafe
  • Number of Participants with Treatment-Emergent Adverse Events (TEAEs)Baseline through approximately 7 days after final dose

    Treatment-emergent adverse events are defined as adverse events that begin or worsen after administration of BLKR201 or placebo. Events will be summarized by frequency and severity.

  • Change From Baseline in Clinical Laboratory ParametersBaseline through approximately 7 days after final dose

    Clinical laboratory parameters include hematology, clinical chemistry, coagulation, lipid panel, and urinalysis. Change from baseline values will be summarized at scheduled post-dose assessments.

  • Change From Baseline in Systolic Blood PressureBaseline through approximately 7 days after final dose

    Systolic blood pressure will be measured in millimeters of mercury (mmHg). Change from baseline will be summarized at scheduled post-dose assessments.

  • Change From Baseline in Diastolic Blood PressureBaseline through approximately 7 days after final dose

    Diastolic blood pressure will be measured in millimeters of mercury (mmHg). Change from baseline will be summarized at scheduled post-dose assessments.

  • Change From Baseline in Pulse RateBaseline through approximately 7 days after final dose

    Pulse rate will be measured in beats per minute (bpm). Change from baseline will be summarized at scheduled post-dose assessments.

  • Change From Baseline in Respiratory RateBaseline through approximately 7 days after final dose

    Respiratory rate will be measured in breaths per minute. Change from baseline will be summarized at scheduled post-dose assessments.

  • Change From Baseline in Body TemperatureBaseline through approximately 7 days after final dose

    Body temperature will be measured in degrees Fahrenheit (°F). Change from baseline will be summarized at scheduled post-dose assessments.

  • Change From Baseline in 12-Lead Electrocardiogram (ECG) ParametersBaseline through approximately 7 days after final dose

    ECG parameters include QT interval corrected using Fridericia's formula (QTcF), PR interval, QRS duration, and heart rate. Change from baseline values will be summarized at scheduled post-dose assessments.