A Multiple Ascending Dose Trial of HRS-2129 in Healthy Subjects

A Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of HRS-2129 Following Multiple Doses Administration in Healthy Subjects

The study is being conducted to evaluate the safety, tolerability, pharmacokinetics and pharmacodynamics of HRS-2129 in healthy subjects.

Study Overview

• Status: Completed
• Conditions: Pain
• Intervention / Treatment: Drug: HRS-2129; Drug: HRS-2129 placebo

• Study Type: Interventional
• Enrollment (Actual): 23
• Phase: Phase 1

Contacts and Locations

Study Locations

• China
  • Hunan
    • Changsha, Hunan, China, 410013
      • The Third Xiangya Hospital of Central South University

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

1. Age: 18 to 55 years old (inclusive);
2. Body weight: ≥ 50 kg for male and ≥ 45 kg for female, body mass index: 19.0 ~ 28.0 kg/m2 (inclusive);
3. Subject has no plan to give a birth, donate sperm or eggs from signing the informed consent form to 6 months after last dose;
4. Female subjects: non-pregnant or non-lactating;
5. The skin to receive pain stimuli has no wound or derma disease;
6. Subject who is willing to accept pain test;
7. Subject who voluntarily signs the informed consent.

Exclusion Criteria:

1. Subject who suffers from clinical acute and chronic diseases of circulatory system, endocrine system, nervous system, digestive system, respiratory system, hematology, immunology, psychiatry and metabolic abnormalities;
2. Subject with a history of torsade de pointes, symptomatic or multigenic or frequent or require medical treatment arrhythmia, or personal or family history of short QT syndrome or long QT syndrome;
3. Subject with a history of allergies to the IMP or its excipients, or subject with allergic constitution;
4. Subject who underwent major surgery within 6 months prior to screening, or received surgery that may significantly affect the pharmacokinetics or safety evaluation of the IMP, or who plans to undergo surgery during the study period;
5. Subject with a medication history that inhibits or induces liver metabolism of drug has been used within 1 month before administration;
6. Subject with vaccinated within 1 month prior to screening or plan to be vaccinated during the study;
7. Subject who used any drugs or health products (including Chinese herbal medicines) within 7 half-lives or 14 days (whichever is longer) before administration, or who plans to receive other drug treatments during the study;
8. Subject who has participated in clinical trials and received experimental drugs within 3 months before screening, or plans to participate in other clinical trials during this study;
9. Donate blood/blood loss ≥ 400 mL within 3 months before screening;
10. Subject who smoked more than 5 cigarettes per day on average within 3 months before screening;
11. Drink more than 14 units of alcohol per week on average;
12. Drink excessive tea, coffee or caffeinated beverages within 3 months before screening;
13. Consume special food (such as grapefruit, grapefruit juice or food/drink containing grapefruit juice, chocolate, tobacco, alcohol, caffeine and other food or drink) within 48 hours before administration;
14. Subject who has special requirements for diet and cannot follow a unified diet;
15. Subject with clinical significant abnormalities in medical examination;
16. Subject with positive tests for hepatitis B surface antigen, hepatitis C virus antibody, syphilis or human immunodeficiency virus antibody;
17. Subject with a history of drug abuse or with a positive result for drug abuse test;
18. Alcohol test result is positive;
19. Subject who has difficulty in swallowing, or venous blood collection, or who cannot tolerate venipuncture, or who has a history of fainting of needle or blood;
20. Subject who is judged to have suicidal ideation or suicidal behavior by mental state assessment;
21. Subject may not be able to complete the study due to other reasons or the investigators considers that he is not suitable for inclusion.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Quadruple

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: HRS-2129 experimental group	Drug: HRS-2129; HRS-2129.
Placebo Comparator: HRS-2129 placebo group	Drug: HRS-2129 placebo; HRS-2129 placebo.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
The incidence and severity of adverse events (AEs)	From ICF signing date to Day 39.
The incidence and severity of adverse events (AEs)	From ICF signing date to Day 41.

Secondary Outcome Measures

Outcome Measure	Time Frame
Number of participants with clinically meaningful findings in Columbia Suicide Severity Rating Scale (C-SSRS) Responses	From ICF signing date to Day 13.
Time to reach maximum plasma concentration (Tmax) of HRS-2129	0 hour to 216 hours after administration.
Terminal half-life (t1/2)	0 hour to 216 hours after administration.
Maximum plasma concentration (Cmax) of HRS-2129	0 hour to 216 hours after administration.
Apparent clearance (CL/F) of HRS-2129	0 hour to 216 hours after administration.
Apparent volume of distribution (Vz/F) of HRS-2129	0 hour to 216 hours after administration.
Cold Pain detection threshold for the Thermode Cold Test	Day 1 to Day 12.
Cold Pain detection threshold for the Thermode Cold Test	Day 1 to Day 15.
Heat Pain detection threshold for the Thermode Heat Test	Day 1 to Day 12.
Heat Pain detection threshold for the Thermode Heat Test	Day 1 to Day 15.
Pain tolerance time for the Cold Pain Test	Day 1 to Day 12.
Pain tolerance time for the Cold Pain Test	Day 1 to Day 15.
Number of participants with clinically meaningful findings in Columbia Suicide Severity Rating Scale (C-SSRS) Responses	From ICF signing date to Day 15.

Collaborators and Investigators

• Sponsor: Shandong Suncadia Medicine Co., Ltd.

Study record dates

Study Major Dates

• Study Start (Actual): December 30, 2024
• Primary Completion (Actual): July 2, 2025
• Study Completion (Actual): July 2, 2025

Study Registration Dates

• First Submitted: December 16, 2024
• First Submitted That Met QC Criteria: December 16, 2024
• First Posted (Actual): December 19, 2024

Study Record Updates

• Last Update Posted (Estimated): September 3, 2025
• Last Update Submitted That Met QC Criteria: September 1, 2025
• Last Verified: September 1, 2025

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Neurologic Manifestations; Pathological Conditions, Signs and Symptoms; Signs and Symptoms; Pain
• Other Study ID Numbers: HRS-2129-102

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: UNDECIDED

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No