New drug CAY001 enters first human safety trial
NCT ID NCT06845839
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This early-stage study tests the safety of a new drug called CAY001 in 24 healthy adults aged 18-50. Participants receive a single dose of the drug or a placebo by IV, and researchers monitor them for 28 days for side effects and how the drug moves through the body. The goal is simply to see if it is safe enough to study further.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- CAY001 (a complex of polyphosphate and silica nanoparticles)
- What could go wrong
- This is a very early, first-in-human study with only 24 healthy people. It is designed to check safety, not to treat any disease, so it may not lead to any medical use.
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
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Phase 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
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About 24 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Dec 2025
- Expected to finish
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Oct 2026
An estimate. End dates often move.
- Lead sponsor
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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
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18 to 50 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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.
Inclusion Criteria: 1. The subject is able to provide written informed consent 2. The subject is male or female (based on gender assigned at birth), 18-50 years of age inclusive 3. The subject has a body mass index ≥ 18 and ≤ 30.0 kg/m2 and weighs at least 61 kg for males and females 4. The subject is in good general health per Investigator evaluation for age as determined by medical history, vital signs, physical examination findings, screening laboratory test results, and 12-lead ECG results. Specific inclusionary laboratory values prior to randomization require the following. * Aspartate transaminase (AST), alanine transaminase (ALT) \< 1.5 x upper limit of normal (ULN) * Total serum bilirubin and alkaline phosphatase levels \< 1.2 x ULN * White blood cell (WBC) count, platelet count, and hemoglobin level within the normal range; out of range values are allowed if per the Investigator they are not deemed clinically significant * PT/INR, partial thromboplastin time (PTT), and D-dimer level (age-adjusted) within the normal range 5. Negative drug and alcohol tests at Screening and check-in (Day -1) and willing to abstain from alcohol and recreational drug use from the screening visit until the EOS/ET Visit; 6. No use of any tobacco or nicotine-containing products within 3 months, negative cotinine test at Screening and check-in (Day -1), and willing to abstain from tobacco or nicotine use from the screening visit until the EOS/ET Visit; 7. Male and female (women of childbearing potential \[WOCBP\]) subjects of childbearing potential must agree to the double-barrier method (i.e. male condom and spermicide or diaphragm and spermicide) or abstinence and refrain from sperm/egg donation throughout the study starting with the first dose of study treatment and for at least 3 months after the last dose of study drug. Hormonal contraceptives and intrauterine devices \[IUD\] must be stopped at least 3 months prior to the first dose of study treatment and for at least 3 months after the last dose of study drug. ▪ Note: Non-WOCBP includes healthy postmenopausal women who have undergone surgical menopause (hysterectomy, oophorectomy) or have been naturally menopausal, with no menstrual cycle for at least 24 months prior to Day 1; In the case of females, a negative serum pregnancy test (SPT) at Screening and a negative urine pregnancy test at check-in on Day -1. 8. Able to communicate adequately with the Investigator and to comply with the requirements for the entire study Exclusion Criteria: 1. Any clinically significant acute or chronic medical condition that in the evaluating Investigator's opinion could interfere with the study 2. Any history of plastic surgery involving silicone, any clinically significant illness, medical/surgical procedure, or trauma within 4 weeks of the first administration of the study drug or any planned surgical procedure that will occur during the study and cannot be delayed (from screening through the Day 28 EOS/ET Visit); 3. Any clinically significant abnormal findings in physical examination, vital signs, laboratory assessments (other than those discussed in the inclusion criteria), and ECG parameters identified during screening or check-in that in the evaluating Investigator's opinion could interfere with the study. Note: abnormal test results may be repeated once for confirmation; 4. Any of the following vital signs occurring after 10 minutes of supine rest at screening or check-in: ▪ Systolic blood pressure \>140 mm Hg ▪ Diastolic blood pressure \>90 mmHg ▪ Heart rate \<45 or \>100 beats per minute 5. Any of the following ECG parameters at screening or check-in: * Prolonged Fridericia-corrected QT interval (QTcF) \>450 msec for males and \> 460 msec for females, shortened QTcF \<340 msec, or pause \>3 seconds; * Prolonged PR (PQ) interval \>200 msec, intermittent second- or third-degree atrioventricular (AV) block or AV dissociation * Complete right or left bundle branch block (QRS \> 120 msec); left ventricular hypertrophy * Family history of long QT syndrome or sudden cardiac death 6. Have a known hypersensitivity or allergy to CAY001 components polyP or SNP, or to any ingredients in medication(s) to be received in this study; 7. Any history of significant liver, spleen, or kidney conditions 8. Any history of arterial or venous thrombosis or hypercoagulable or thrombotic condition, including any of the following * History of transient ischemic attack, cardiovascular accident, stroke (ischemic or hemorrhagic), unstable angina, myocardial infarction, or peripheral arterial disease * History of deep venous thrombosis, pulmonary embolus, thrombophlebilitis or arterial thrombosis * History of known clotting disorders like factor V leiden syndrome, protein C or S deficiency, or antiphospholipid syndrome; 9. An increased risk of bleeding, including but not limited to the following: * Recent history (within 6 months preceding the first dose of study drug) of gastrointestinal (GI) bleeding that required unscheduled medical evaluation; * History of intracranial, intraocular, retroperitoneal, or spinal bleeding; * Recent major trauma (within 6 months preceding the first dose of the study drug) * History of hemorrhagic disorders, e.g. hemophilia, von Willebrand's disease, Hermansky-Pudlak syndrome * History of severe head trauma, intracranial hemorrhage, intracranial neoplasm, arteriovenous malformation, aneurysm, or proliferative retinopathy; * Subject reported history of blood in the stool 10. Use of any prescription, investigational or illicit drugs within 30 days (or 5 half-lives whichever is longer) prior to dosing; 11. Use of any over-the-counter (OTC) products, dietary supplements and herbal products (ie. St. John's Wort or fish oil) within 14 days of dosing through the Day 7 Safety Follow-up Visit; 12. Known active hepatitis B or C infection, human immunodeficiency virus (HIV) infection, or known other immune deficiency disease at screening; 13. Females who are pregnant, plan to become pregnant within 3 months of the last dose of study drug, or are breastfeeding a child; 14. History of or treatment for alcoholism or drug addiction within 1 year; 15. Receipt of blood transfusion, blood-derived products, or coagulation factors within 1 month prior to Day 1; 16. Prior exposure to CAY001; 17. An employee, family member, or student of the Sponsor, Investigator, or clinical site(s); 18. Unable to adhere to or understand the requirements of the protocol. 19. Consume caffeine containing food or beverages 48 hours prior to check in and during study confinement period. 20. Females who are actively menstruating on the day of dosing (Day 1). 21. Subject meets eligibility criteria, but study is filled.
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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TKL Research
RECRUITINGFair Lawn, New Jersey, 07410, United States
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