A Phase I First-in-Human Study of GenSci128 in Patients With Solid Tumors Harboring a TP53 Y220C Mutation

December 23, 2025 updated by: Changchun GeneScience Pharmaceutical Co., Ltd.

A Phase I, Multicenter, Multinational, Open-label, First-in-Human Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Efficacy of GenSci128 Tablet in Patients With Locally Advanced or Metastatic Solid Tumors Harboring a TP53 Y220C Mutation

The purpose of this study is to Evaluate the Safety, Tolerability, Pharmacokinetics and Efficacy of GenSci128 Tablet in Patients with Locally Advanced or Metastatic Solid Tumors Harboring a TP53 Y220C Mutation

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
82

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • 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

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • China
    • Shanghai Municipality
      • Shanghai, Shanghai Municipality, China, 200032
        • Recruiting
        • Zhongshan Hospital ,Fudan University
        • Contact:
          • Tianshu Liu, Doctor
          • Phone Number: +8613681973996
        • Contact:
          • liu.tianshu@zs-hospital.sh.cn

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Has the ability to understand and the willingness to sign a written informed consent document (prior to the initiation dose of GenSci128 and any study procedures)
  2. Is willing and able to comply with the scheduled visits, treatment plan, laboratory tests and other specified study procedures
  3. Has confirmed TP53 Y220C mutation in tumor tissue
  4. Has histologically or cytologically confirmed locally advanced or metastatic solid tumors and have progressed following standard therapy, or for whom, in the opinion of the investigator, no available and effective standard therapy exists.
  5. Has at least one measurable lesion by RECIST v1.1
  6. Has an ECOG status of 0 or 1
  7. Has a life expectancy of ≥ 3 months.

Exclusion Criteria:

  1. Has diagnosed as primary central nervous system (CNS) tumor.
  2. Has CNS metastases, unless asymptomatic, neurologically stable and not requiring steroids treatment for at least 2 weeks prior to initiation dose of GenSci128.
  3. Has a history of leptomeningeal disease or spinal cord compression.
  4. Has stroke or transient ischemic attack within 6 months prior to initiation dose of GenSci128.
  5. Has active infection requiring intravenous (IV) antibiotics or other uncontrolled inter-current illness requiring hospitalization. Minor infections, e.g., periodontal infection or urinary tract infection (UTI), which may be treated with short term oral antibiotics are allowed.
  6. Uncontrolled hypertension (Blood pressure ≥ 150/90 mmHg despite optimal medical management)
  7. Has a history of prior organ transplant or allogeneic stem cell transplant.
  8. Has received a selective reactivator of p53 Y220C mutation.
  9. Has uncontrollable pleural effusion, pericardial effusion, or ascites requiring frequent drainage (recurrence ≤ 14 days after intervention).
  10. Has known human immunodeficiency virus (HIV) infection (positive HIV 1/2 antibodies) or known chronic hepatitis B or C [participants positive for hepatitis B surface antigen (HBsAg) or hepatitis B core antibody (HBcAb) will be eligible if they are negative for HBV-DNA; participants positive for hepatitis C virus (HCV) IgG will be eligible if they are negative for HCV-RNA].
  11. Is persisting toxicity related to prior anticancer therapy (NCI CTCAE V5.0 Grade>1). However, alopecia and sensory neuropathy Grade ≤2, or other Grade ≤2 adverse events not constituting a safety risk, based on the investigator's judgment are acceptable.
  12. Other severe acute or chronic medical or psychiatric condition or laboratory abnormality that may increase the risk associated with study participation or GenSci128 administration or may interfere with the interpretation of study results, in the judgment of the investigator, would make the participant inappropriate for entry into this study.

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: Treatment
  • Allocation: Non-Randomized
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: 150mg dose level
Drug: GenSci128 tablets
GenSci128 tablets have three specifications, including 50mg, 200mg, 500mg, and are taken in combination with the doctor's advice in different dose levels. GenSci128 will be orally administrated daily (except single dose in Cycle 0) with no interruptions until occurrence of unacceptable toxicity, or progressive disease, or withdrawal of consent, or death, or contact lost, or starting a new anticancer therapy, etc. (whichever occurs first).
Experimental: 300mg dose level
Drug: GenSci128 tablets
GenSci128 tablets have three specifications, including 50mg, 200mg, 500mg, and are taken in combination with the doctor's advice in different dose levels. GenSci128 will be orally administrated daily (except single dose in Cycle 0) with no interruptions until occurrence of unacceptable toxicity, or progressive disease, or withdrawal of consent, or death, or contact lost, or starting a new anticancer therapy, etc. (whichever occurs first).
Experimental: 600mg dose level
Drug: GenSci128 tablets
GenSci128 tablets have three specifications, including 50mg, 200mg, 500mg, and are taken in combination with the doctor's advice in different dose levels. GenSci128 will be orally administrated daily (except single dose in Cycle 0) with no interruptions until occurrence of unacceptable toxicity, or progressive disease, or withdrawal of consent, or death, or contact lost, or starting a new anticancer therapy, etc. (whichever occurs first).
Experimental: 1200mg dose level
Drug: GenSci128 tablets
GenSci128 tablets have three specifications, including 50mg, 200mg, 500mg, and are taken in combination with the doctor's advice in different dose levels. GenSci128 will be orally administrated daily (except single dose in Cycle 0) with no interruptions until occurrence of unacceptable toxicity, or progressive disease, or withdrawal of consent, or death, or contact lost, or starting a new anticancer therapy, etc. (whichever occurs first).
Experimental: 1800mg dose level
Drug: GenSci128 tablets
GenSci128 tablets have three specifications, including 50mg, 200mg, 500mg, and are taken in combination with the doctor's advice in different dose levels. GenSci128 will be orally administrated daily (except single dose in Cycle 0) with no interruptions until occurrence of unacceptable toxicity, or progressive disease, or withdrawal of consent, or death, or contact lost, or starting a new anticancer therapy, etc. (whichever occurs first).
Experimental: 2500mg dose level
Drug: GenSci128 tablets
GenSci128 tablets have three specifications, including 50mg, 200mg, 500mg, and are taken in combination with the doctor's advice in different dose levels. GenSci128 will be orally administrated daily (except single dose in Cycle 0) with no interruptions until occurrence of unacceptable toxicity, or progressive disease, or withdrawal of consent, or death, or contact lost, or starting a new anticancer therapy, etc. (whichever occurs first).

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Incidence and severity of adverse events (AEs) and dose limiting toxicities (DLTs)
Time Frame: 3 weeks
Part 1 is a dose escalation study ，to assess the safety and tolerability of GenSci128 in participants with locally advanced or metastatic solid tumors harboring a TP53 Y220C mutation
3 weeks
maximal tolerance dose （MTD）、recommended dose of expansion （RDE）
Time Frame: up to 3 months
Part 1 is a dose escalation study ，to determine the maximum tolerated dose (MTD), if any, and recommend dose of expansion (RDE) for GenSci128 in participants with locally advanced or metastatic solid tumors harboring a TP53 Y220C mutation
up to 3 months
recommended phase 2 dose （RP2D）
Time Frame: up to 3 months
Part 2 is a dose expansion study，Determining Recommended Phase II Dose
up to 3 months

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
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)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
June 10, 2025

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 1, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
October 1, 2028

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
March 19, 2025

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 26, 2025

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
April 3, 2025

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
December 30, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 23, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
December 1, 2025

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • GenSci128-101

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.

Cookie Settings

We use cookies to ensure that we give you the best experience on our website. For more details carefully read our Privacy and Cookies Policy. ...>>>You can change your preferences or withdraw your consent at any time by deleting the cookies from your website or computer as described in the policy. Please accept it and choose your preferences by ticking the corresponding boxes in the "Manage Settings" section below. Please carefully read our Terms of Service before you proceed with using any part of this website.
«Manage Settings