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HealthyPhase 1NCT07409922

Study of Single and Multiple Ascending Doses of KR23343 in Healthy Adult Participants

A Phase 1 study testing KR23343 in people with Healthy, run by Jiangxi Kvvit Pharmaceutical Co., Ltd. at 1 site in China.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

This is a Phase I, single-center trial to assess the safety, tolerability, PK and food effect of KR23343 in healthy volunteers. The study will be conducted in 3 sequential stages: Stage 1: Single-Ascending-Dose (SAD) study A randomized, double-blind, placebo-controlled, dose-escalation study to assess the safety… Read more about this study

Who is it for?
Ages 18 to 45 yearsHealthy volunteers can take part
Conditions the study is for
Healthy
What is being tested?
KR23343
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
92 participants
Where
1 siteChina
Study dates
5 Feb 2026to 20 Nov 2026
Phase
Phase 1
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 45 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Healthy male or female participants aged 18 to 45 years, inclusive.
  • Body mass index (BMI) between 19 and 28 kg/m² (inclusive) and body weight ≥ 50 kg for males or ≥45 kg for females.
  • All screening assessments (vital signs, physical examination, laboratory tests, ECG) must be within normal limits or deemed not clinically significant by the investigator. One repeat assessment is permitted during the screening period to confirm eligibility.
  • Participants must agree not to donate gametes (sperm or ova), must not be planning pregnancy, and must use a reliable contraceptive method from the time of informed consent signing through 3 months following the last dose.
  • Able to understand study requirements, provide written informed consent, and comply with all trial procedures per protocol.

Who cannot join

  • Hypersensitivity or allergic to KR23343.
  • History of severe hypersensitivity reactions or multiple drug/food allergies
  • Significant disease affecting the central nervous, cardiovascular, gastrointestinal, respiratory, renal, hematologic, metabolic, or musculoskeletal systems, or any condition considered by the Investigator to make the participant unsuitable for the trial.
  • Any surgical or medical condition that may significantly affect drug absorption, distribution, metabolism, or excretion, or compromise participant safety, including but not limited to urinary tract obstruction, dysuria, gastroenteritis, peptic ulcer disease, or history of gastrointestinal bleeding.
  • History of psychiatric disorders or cerebral dysfunction; suicidal ideation identified by the Columbia-Suicide Severity Rating Scale (C-SSRS) or investigator judgment; or history of self-harm behavior.
  • Abnormal screening investigations meeting any of the following criteria: a) Hepatic dysfunction: ALT or AST>1.5x upper limit of normal (ULN), or total bilirubin >1.3x ULN; b) Creatinine clearance <80 mL/min (calculated by Cockcroft-Gault formula: CrCl = [(140 - age) × weight (kg)] / [0.814 × Scr (μmol/L)], multiplied by 0.85 for females); c) Vital signs outside specified ranges (heart rate <50 or >100 bpm, systolic blood pressure <90 or ≥140 mmHg, diastolic blood pressure <60 or ≥90 mmHg, tympanic temperature <35.7 or >38.0°C); d) QTc-F interval ≥450 ms (males) or ≥470 ms (females), or other clinically significant ECG abnormalities; e) Any other screening abnormality deemed clinically significant by the investigator.
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  • Blood loss or donation ≥400 mL within 3 months prior to screening, or planned donation during the study.
  • Use of any medication within 2 weeks (or 5 half-lives, whichever is longer) prior to screening or during the study, including prescription drugs, over-the-counter medications, Chinese herbal products, dietary supplements, vaccines, or any drug known to induce or inhibit hepatic metabolizing enzymes (e.g., CYP3A4, CYP3A5).
  • Participation in a clinical trial involving investigational products, vaccines, or devices within 3 months prior to screening, or within 5 half-lives of the last dose, whichever is longer.
  • History of drug abuse or illicit drug use within 6 months prior to screening, or positive urine drug screen.
  • Hazardous alcohol consumption ( >14 units/week; 1 unit = 360 mL beer, 25 mL 40% spirits, or 100 mL wine) within 6 months prior to screening, inability to abstain from screening through end-of-study, or positive alcohol breath test.
  • Smoking >10 cigarettes per day within the 3 months prior to screening, or inability to abstain from smoking and nicotine products during the trial.
  • Regular consumption of >8 cups/day (1 cup = 250 mL) of grapefruit juice, tea, coffee, or caffeinated beverages within the 3 months prior to screening, or inability to abstain during the trial.
  • Positive serology for hepatitis B surface antigen (HBsAg), hepatitis C virus (HCV) antibody, Treponema pallidum antibody, or human immunodeficiency virus (HIV) antibody.
  • Pregnancy, lactation, or clinically significant abnormal pregnancy test as judged by the investigator.
  • Specific dietary restrictions or inability to adhere to the standardized diet during their CPU stay.
  • Difficult venous access, history of vasovagal syncope (needle or blood phobia), or inability to tolerate venipuncture.
  • Any condition or circumstance that, in the opinion of the Investigator, would make the participant unsuitable for the study.

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Peimin Yu contact

021-52888158

China1 site, 1 recruiting
  • Huashan Hospital, Fudan University

    Shanghai

    Jing Zhang, 021-52887926

    Recruiting

Other trials in China

About this study

Official title: A Phase 1, Randomized, Double-Blind, Placebo-Controlled, Single and Multiple Dose Escalation Study to Evaluate the Safety, Tolerability and Pharmacokinetics of KR23343, and an Open-Label Assessment of Food's Effect on Its Pharmacokinetics in Healthy Adults

This is a Phase I, single-center trial to assess the safety, tolerability, PK and food effect of KR23343 in healthy volunteers. The study will be conducted in 3 sequential stages:

Stage 1: Single-Ascending-Dose (SAD) study A randomized, double-blind, placebo-controlled, dose-escalation study to assess the safety, tolerability, and PK of single ascending doses of KR23343.

Read more

Stage 2: Food-Effect (FE) study An open-label, randomized, two-period, two-sequence crossover study to evaluate the effect of food on the PK of a single dose of KR23343.

Stage 3: Multiple-Ascending-Dose (MAD) study A randomized, double-blind, placebo-controlled, dose-escalation study to investigate the safety, tolerability, and PK of repeated once-daily administration of KR23343 for 10 days.

Read the detailed description

This first-in-human study will investigate the safety, tolerability, and pharmacokinetics (PK) of KR23343 following single and multiple ascending oral doses in healthy subjects, as well as assess the effect of food on the PK of KR23343. The results of this study will be used to select doses for subsequent studies in patients.

Primary objectives:

Stage 1: To assess the safety and tolerability of single ascending oral doses of KR23343 in healthy participants. Stage 3: To assess the safety and tolerability of multiple ascending oral doses of KR23343 in healthy participants.

Secondary objectives:

Stage 1: To assess the PK profile of KR23343 following single oral doses in healthy participants and evaluate the effect of KR23343 tablets on the corrected QT interval (QTcF) and other electrocardiogram (ECG) parameters. Stage 2: To assess the PK profile, safety and tolerability of a single dose of KR23343 following high-fat food intake relative to fasting conditions in healthy participants. Stage 3: To assess the PK profile of KR23343 after repeated oral doses in healthy participants.

Conditions
Healthy
Being tested
KR23343, Matching Placebo

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • KR23343Drug

    Participants will receive oral administrations of KR23343

  • Matching PlaceboDrug

    Participants will receive placebo

Study groups in NCT07409922
Study groupRoleWhat they receive
Stage 1 Dose 1ExperimentalStage 1 Dose 1 Single dose of 10 mg
Receives: Drug: KR23343
Stage 1 Dose 2ExperimentalStage 1 Dose 1 Single dose of 20 mg
Receives: Drug: KR23343
Stage 1 Dose 3ExperimentalStage 1 Dose 3 Single dose of 30 mg
Receives: Drug: KR23343
Stage 1 Dose 4ExperimentalStage 1 Dose 4 Single dose of 45 mg
Receives: Drug: KR23343
Stage 1 Dose 5ExperimentalStage 1 Dose 5 Single dose of 60 mg
Receives: Drug: KR23343
Stage 1 placeboPlacebo comparatorStage 1 placebo Single dose of placebo
Receives: Drug: Matching Placebo
Stage 2 30 mg KR23343 Fed stateExperimentalKR23343 oral single dose with food
Receives: Drug: KR23343
Stage 2 30 mg KR23343 Fasted stateExperimentalKR23343 oral single dose without food
Receives: Drug: KR23343
Stage 3 Dose 1ExperimentalKR23343 oral daily dose for 10 days (Dose 20mg QD )
Receives: Drug: KR23343
Stage 3 Dose 2ExperimentalKR23343 oral daily dose for 10 days (Dose 30mg QD )
Receives: Drug: KR23343
Stage 3 Dose 3ExperimentalKR23343 oral daily dose for 10 days (Dose 45 mg QD )
Receives: Drug: KR23343
Stage 3 placeboPlacebo comparatorPlacebo oral daily dose for 10 days
Receives: Drug: Matching Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of Participants With Treatment-Emergent Adverse Events, Serious Adverse Event(s) (SAEs), And Adverse Events Leading To Study Discontinuation

    The number of participants with recorded treatment emergent adverse events, SAEs, and adverse events leading to study discontinuation following single and multiple doses of KR23343

    Measured: 7 days in stage 1;21 days in stage 2; 16 days in stage 3.

  2. Number of participants with abnormal laboratory test results, abnormal vital signs, abnormal physical examination findings, and abnormal ECG parameters

    Hematology, urinalysis, clinical chemistry, coagulation studies, vital signs (tympanic temperature, pulse, sitting blood pressure), and 12-lead ECGs (including heart rate, PR, RR, QRS, QT intervals, and QTcF) will be assessed at screening, pre-dose,and at post-dose timepoints as specified in the study

    Measured: 7 days in stage 1;21 days in stage 2; 16 days in stage 3.

Secondary outcomes (12)
  1. Peak Plasma Concentration (Cmax) of Stage 1

    Blood samples were collected at indicated time points for pharmacokinetic (PK) analysis of KR23343.

    Measured: Day 1 up to 144 hours post-dose

  2. Area Under the Plasma Concentration Versus Time Curve (AUC) of Stage 1

    Blood samples were collected at indicated time points for pharmacokinetic (PK) analysis of KR23343.

    Measured: Day 1 up to 144 hours post-dose

  3. Time to Cmax (Tmax) of Stage 1

    Blood samples were collected at indicated time points for pharmacokinetic (PK) analysis of KR23343.

    Measured: Day 1 up to 144 hours post-dose

  4. Elimination Half-life(t1/2)of Stage1

    Blood samples were collected at indicated time points for pharmacokinetic (PK) analysis of KR23343.

    Measured: Day 1 up to 144 hours post-dose

  5. Peak Plasma Concentration (Cmax) of Stage 2

    Blood samples were collected at indicated time points for pharmacokinetic (PK) analysis of KR23343 under fasting and fed condition.

    Measured: Day 1 up to 144 hours post-dose

  6. Area Under the Plasma Concentration Versus Time Curve (AUC) of Stage 2

    Blood samples were collected at indicated time points for pharmacokinetic (PK) analysis of KR23343 under fasting and fed condition.

    Measured: Day 1 up to 144 hours post-dose

  7. Time to Cmax (Tmax) of Stage 2

    Blood samples were collected at indicated time points for pharmacokinetic (PK) analysis of KR23343 under fasting and fed condition.

    Measured: Day 1 up to 144 hours post-dose

  8. Elimination Half-life(t1/2)of Stage 2

    Blood samples were collected at indicated time points for pharmacokinetic (PK) analysis of KR23343 under fasting and fed condition.

    Measured: Day 1 up to 144 hours post-dose

  9. Peak Plasma Concentration (Cmax) of Stage 3

    Blood samples were collected at specified time points to perform pharmacokinetic (PK) analysis of multiple-dose KR23343

    Measured: Day 1 up to 144 hours post-last dose

  10. Blood and Plasma Area Under the Concentration-Time Profile From Time 0 to Time Tau (AUCtau) of Stage 3

    Blood samples were collected at specified time points to perform pharmacokinetic (PK) analysis of multiple-dose KR23343

    Measured: Day 1 up to 144 hours post-last dose

  11. Time to Cmax (Tmax) of Stage 3

    Blood samples were collected at specified time points to perform pharmacokinetic (PK) analysis of multiple-dose KR23343

    Measured: Day 1 up to 144 hours post-last dose

  12. Evaluation of the effect of time-matched plasma concentrations of KR23343 on electrocardiogram (ECG) parameters and the QTc interval, including concentration-QTc analysis for Stage 1

    The placebo-corrected baseline-adjusted QTc (ΔΔQTc) was derived as the time-matched difference between the Day 1 change-from-baseline QTc values observed with KR23343 and those observed with placebo, calculated separately for each post-dose assessment timepoint.

    Measured: Day 1 up to 144 hours post-dose

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted13 Feb 2026
  2. Study start5 Feb 2026
  3. Primary completion20 Nov 2026 (estimated)
  4. Study completion20 Nov 2026 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
The study will be conducted in 3 sequential stages: Stage 1 will investigate single ascending oral doses of KR23343;Stage 2 is a 2-way crossover assessment of the effect of food on the PK of KR23343; and Stage 3 will investigate multiple ascending oral doses of KR23343.
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
92 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07409922
Sponsor's protocol ID
KR23343-202505
Status last verified
Aug 2026
First submitted
2 Feb 2026
Last updated
5 Aug 2026
Results posted
No
FDA-regulated drug
No
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing KR23343 in people with Healthy, run by Jiangxi Kvvit Pharmaceutical Co., Ltd. at 1 site in China.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 18 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 5 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Jing Zhang (021-52887926, zhangj_fudan@163.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of Participants With Treatment-Emergent Adverse Events, Serious Adverse Event(s) (SAEs), And Adverse Events Leading To Study Discontinuation (time frame: 7 days in stage 1;21 days in stage 2; 16 days in stage 3.). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 5 Aug 2026.

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