GenSci144 Tablets Phase I Clinical Trial

June 30, 2026 updated by: Changchun GeneScience Pharmaceutical Co., Ltd.

A Single-center, Randomized, Double-blind, Placebo-controlled Phase I Clinical Trial in Healthy Adult Participants in China to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Single Ascending Oral Doses of GenSci144

This study is a Phase I single ascending dose clinical trial in which healthy adult volunteers were administered single oral doses of GenSci144 tablets at different levels. It was conducted using a randomized, double-blind, placebo-controlled design, primarily to evaluate the drug's safety and tolerability, while also exploring its pharmacokinetic and pharmacodynamic characteristics in the body, providing a basis for subsequent clinical use in the treatment of phenylketonuria.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

48

Phase

  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

  • China
    • Shandong
      • Jinan, Shandong, China, 250014
        • Recruiting
        • The First Affiliated Hospital of Shandong First Medical University (Shandong Qianfoshan Hospital).
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Healthy men and women aged 18 to 45, with at least 3 people of the same gender in each group.
  • BMI 19~26 kg/m², men weigh ≥50 kg, women ≥45 kg.
  • Voluntarily sign the informed consent form, fully aware of the research risks and procedures.
  • Use reliable contraception for 3 months after the last dose, no plans for pregnancy or sperm/egg donation.

Exclusion Criteria:

  • A family history of sudden death and serious neuropsychiatric disorders.
  • Major underlying conditions like gastrointestinal absorption problems, chronic liver, kidney, heart, and endocrine diseases.
  • Liver function, kidney function with eGFR<90, abnormal QTc interval, positive for various infectious diseases.
  • Drug allergies, drug abuse, recent participation in other clinical trials.
  • Drinking alcohol, smoking, taking grapefruit/amino acid supplements, and having a chaotic routine during the screening period.
  • Pregnant or breastfeeding women, people who can't tolerate blood draws or get faint from needles.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

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

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: GenSci144 single-dose group.
Drug: GenSci144 tablets
SLC6A19 transporter small molecule inhibitor, oral tablets in 25mg and 75mg, given as a single dose on an empty stomach, used to explore treatment for phenylketonuria.
Placebo Comparator: Matched placebo single-dose group.
Drug: GenSci144 placebo tablets
No active ingredients, appearance, excipients, and specifications are exactly the same as GenSci144.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Adverse events and clinical safety indicators after a single dose.
Time Frame: Sign informed consent until Day3 discharge.
Sign informed consent until Day3 discharge.
Change in QT/QTc interval correction ΔΔQTc after dosing.
Time Frame: Dynamic ECG monitoring from before to 24 hours after medication.
Dynamic ECG monitoring from before to 24 hours after medication.

Secondary Outcome Measures

Outcome Measure
Time Frame
AUC0-t, AUC0-∞, Cmax, Tmax, t1/2, CL/F, Vz/F.
Time Frame: From before dosing to 48 hours after dosing.
From before dosing to 48 hours after dosing.

Other Outcome Measures

Outcome Measure
Time Frame
Urinary Hartnup amino acids, urinary phenylalanine and urinary glutamine.
Time Frame: 24 hours before administration, 0-8 hours after administration, 8-24 hours after administration.
24 hours before administration, 0-8 hours after administration, 8-24 hours after administration.
Plasma phenylalanine levels and plasma amino acid levels.
Time Frame: Day-1 baseline, 1 hours, 2 hours, 3 hours, 4 hours, 24 hours after dosing.
Day-1 baseline, 1 hours, 2 hours, 3 hours, 4 hours, 24 hours after dosing.
Urine sodium and potassium levels.
Time Frame: 0-8 hours and 8-24 hours after dosing.
0-8 hours and 8-24 hours after dosing.
urine output.
Time Frame: - 24 to -16 hours, -16 to 0 hours before dosing, and 0-8 hours, 8-24 hours after dosing.
- 24 to -16 hours, -16 to 0 hours before dosing, and 0-8 hours, 8-24 hours after dosing.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Changchun GeneScience Pharmaceutical Co., Ltd.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

June 22, 2026

Primary Completion (Estimated)

September 1, 2026

Study Completion (Estimated)

December 1, 2026

Study Registration Dates

First Submitted

June 23, 2026

First Submitted That Met QC Criteria

June 30, 2026

First Posted (Actual)

July 6, 2026

Study Record Updates

Last Update Posted (Actual)

July 6, 2026

Last Update Submitted That Met QC Criteria

June 30, 2026

Last Verified

June 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • GenSci144-101

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Phenylketonuria

Clinical Trials on GenSci144 tablets

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Angola

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

3
Subscribe