A Study（Phase I）of GS3-007a Dry Suspension in Healthy Chinese Adults

A Phase I Clinical Study of GS3-007a Dry Suspensions in Healthy Chinese Adults: Randomized, Double-Blind, Placebo-Controlled, Single- and Multiple-Dose, Dose-Escalation, and Food Effect Study

This study consists of two parts: the first part is a single-dose escalating（SAD） and food effect （FE）study, and the second part is a multiple-dose (14-day) escalating(MAD) study. Both phases are designed as randomized, double-blind, dose-escalation, placebo-controlled clinical studies.

Study Overview

• Status: Recruiting
• Conditions: Healthy Adults
• Intervention / Treatment: Drug: GS3-007a for Suspension; Drug: Placebo GS3-007a for Suspension

• Study Type: Interventional
• Enrollment (Estimated): 32
• Phase: Phase 1

Contacts and Locations

• Study Contact: Name: Hong Xu; Phone Number: +86 15702440681; Email: xuhong01@genscigroup.com

Study Locations

• China
  • Shanghai Municipality
    • Shanghai, Shanghai Municipality, China, 200233
      • Recruiting
      • Yuehong Plaza, No. 88 Hongcao Road, Xuhui District, Shanghai
      • Contact: Jinliang Chen; Phone Number: +86 13588482447; Email: kingbright10@126.com

Participation Criteria

Eligibility Criteria

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

Description

Inclusion Criteria:

1. Age 18-45 years (inclusive), healthy adult subjects, both male and female are eligible;
2. Body Mass Index (BMI): 19-26 kg/m² (inclusive), males weighing ≥50 kg, females weighing ≥45 kg;
3. Fully understand the purpose, nature, and methods of the trial, as well as possible adverse reactions, voluntarily participate as subjects, sign the informed consent form (ICF) before any study procedures;
4. From screening day to 3 months after the last dose, have no plans for conception or sperm/egg donation, and agree to use reliable non-drug contraception during the trial (such as complete abstinence, intrauterine device, partner sterilization, etc.).

Exclusion Criteria:

1. A highly allergic constitution
2. Individuals with a clear history of neurological or psychiatric disorders; those lacking behavioral or cognitive function.
3. Electrocardiogram (ECG) QTcF interval abnormal, with a history of QT/QTc interval prolonged; abnormal liver function; abnormal findings in physical examination, laboratory tests, or other examinations with clinical significance.
4. Individuals with a history of hepatitis B, hepatitis C, syphilis, AIDS, or with one or more clinically significant abnormal findings in infectious disease screening.
5. Individuals who are alcoholics or who regularly consumed alcohol within 6 months before the first dose of the trial, or those unwilling to stop drinking or consuming any alcohol-containing products during the entire trial.
6. Individuals with a history of heavy smoking or those who smoked an average of ≥5 cigarettes per day within the 3 months before screening
7. Individuals with immune deficiencies or immunosuppressive diseases, malignant tumors, chronic cardiovascular, liver, kidney, endocrine, respiratory, hematological (including coagulation), or digestive system diseases.
8. Individuals who underwent major surgery within 6 months before screening or during the screening period, or those who experienced acute neurological, digestive, respiratory, circulatory, endocrine, or hematological diseases within 3 months before screening;
9. Subjects who have donated blood (including blood components) within 3 months prior to the first dose, or have experienced blood loss ≥ 400 mL within 3 months prior to the first dose
10. Subjects who have participated in any clinical trial and used investigational drugs, vaccines, or devices within 3 months prior to screening
11. Subjects who have started a significantly abnormal diet within 4 weeks prior to screening or during the screening period, or have special dietary requirements, cannot comply with the standardized diet, or cannot tolerate the high-fat, high-calorie meal in postprandial trials
12. Female subjects who are pregnant or breastfeeding

Study Plan

How is the study designed?

Design Details

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

Number of Arms

6

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: GS3-007a- dose level 1 (SAD/FE)	Drug: GS3-007a for Suspension; GS3-007a dry suspension for oral use. Each sachet contains 50 mg of GS3-007a. The dry suspension is reconstituted with water before administration. Dosing is based on body weight, as specified in the arm descriptions. The product should be stored protected from light, in a sealed container, at or below 25°C.
Experimental: GS3-007a- dose level 2 (SAD/FE)	Drug: GS3-007a for Suspension; GS3-007a dry suspension for oral use. Each sachet contains 50 mg of GS3-007a. The dry suspension is reconstituted with water before administration. Dosing is based on body weight, as specified in the arm descriptions. The product should be stored protected from light, in a sealed container, at or below 25°C.
Placebo Comparator: Placebo (SAD/FE)	Drug: Placebo GS3-007a for Suspension; Placebo dry suspension matching GS3-007a in appearance, odor, and packaging. It contains all excipients except the active ingredient, with added bitter agent. It is reconstituted with water before administration. Dosing is based on body weight, as specified in the arm descriptions. Storage conditions are the same as for the active drug.
Experimental: GS3-007a- dose level 1 (MAD)	Drug: GS3-007a for Suspension; GS3-007a dry suspension for oral use. Each sachet contains 50 mg of GS3-007a. The dry suspension is reconstituted with water before administration. Dosing is based on body weight, as specified in the arm descriptions. The product should be stored protected from light, in a sealed container, at or below 25°C.
Experimental: GS3-007a- dose level 2 (MAD)	Drug: GS3-007a for Suspension; GS3-007a dry suspension for oral use. Each sachet contains 50 mg of GS3-007a. The dry suspension is reconstituted with water before administration. Dosing is based on body weight, as specified in the arm descriptions. The product should be stored protected from light, in a sealed container, at or below 25°C.
Placebo Comparator: Placebo (MAD)	Drug: Placebo GS3-007a for Suspension; Placebo dry suspension matching GS3-007a in appearance, odor, and packaging. It contains all excipients except the active ingredient, with added bitter agent. It is reconstituted with water before administration. Dosing is based on body weight, as specified in the arm descriptions. Storage conditions are the same as for the active drug.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Number of Participants With Treatment Emergent Adverse Events (TEAEs)	up to 6 days (SAD+FE phase), up to 21 days (MAD)

Secondary Outcome Measures

Outcome Measure	Time Frame
Pharmacokinetics (PK) Indicators - Maximum Observed Concentration (Cmax)	up to 6 days (SAD+FE phase)
Pharmacokinetics (PK) Indicators - Time to Reach Maximum Observed Concentration (Tmax)	up to 6 days (SAD+FE phase)
Pharmacokinetics (PK) Indicators - Area Under the Concentration-Time Curve from Time Zero to Time t (AUC0-t)	up to 6 days (SAD+FE phase)
Pharmacokinetics (PK) Indicators - Area Under the Concentration-Time Curve from Time Zero to Infinity (AUC0-∞)	up to 6 days (SAD+FE phase)
Pharmacokinetics (PK) Indicators - Time to Reach Maximum Observed Concentration at Steady State (Tss,max)	up to 21 days (MAD)
Pharmacokinetics (PK) Indicators - Maximum Observed Concentration at Steady State (Css,max)	up to 21 days (MAD)
Pharmacokinetics (PK) Indicators - Minimum Observed Concentration at Steady State (Css,min)	up to 21 days (MAD)
Pharmacokinetics (PK) Indicators - Average Observed Concentration at Steady State (Css,av)	up to 21 days (MAD)
Pharmacodynamics(PD) Indicators	up to 6 days (SAD+FE phase), up to 21 days (MAD)
PD Indicators	The entire MAD research phase

Collaborators and Investigators

• Sponsor: Changchun GeneScience Pharmaceutical Co., Ltd.

Study record dates

Study Major Dates

• Study Start (Actual): January 7, 2026
• Primary Completion (Estimated): June 1, 2026
• Study Completion (Estimated): August 1, 2026

Study Registration Dates

• First Submitted: February 25, 2026
• First Submitted That Met QC Criteria: March 12, 2026
• First Posted (Actual): March 16, 2026

Study Record Updates

• Last Update Posted (Actual): March 16, 2026
• Last Update Submitted That Met QC Criteria: March 12, 2026
• Last Verified: February 1, 2026

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Pharmaceutical Preparations; Dosage Forms; Complex Mixtures; Colloids; Suspensions
• Other Study ID Numbers: GenSci073-107

Drug and device information, study documents

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