Safety and Efficacy of Avapritinib in Chinese Patients With Gastrointestinal Stromal Tumor (GIST) in the Real World

February 9, 2026 updated by: CStone Pharmaceuticals

A National Multicenter, Noninterventional Clinical Study Evaluating the Safety and Efficacy of Avapritinib in Chinese Patients With Gastrointestinal Stromal Tumor (GIST) in the Real World

This study is an observational, multicenter, Real-word study to evaluate the safety and clinical efficacy of avapritinib in Chinese subjects with GIST.

Study Overview

Status

Status

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

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.
Observational

Enrollment (Actual)

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.
61

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
    • Beijing Municipality
      • Beijing, Beijing Municipality, China, 100000
        • Beijing Cancer Hospital

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

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

GIST patients with specific genetic mutations who were treated or will be treated with avapritinib (other TKIs in corhort 4) in about 20 hospitals from 1 May 2021 to 31 Aug. 2023.

Description

Inclusion Criteria:

  • Cohort 1 and 4: Participants must have a confirmed diagnosis of unresectable GIST with mutations in the PDGFRα gene exon 18.
  • Cohort 2: Participants must have a confirmed diagnosis of GIST with mutations in the PDGFRα gene exon 18 and was/will be administrated avapritinib in an neoadjuvant and/or adjuvant setting.
  • Cohort 3: Participants must have a confirmed diagnosis of unresectable GIST without mutations in the PDGFRα gene exon 18, KIT gene exon 13, and KIT gene exon 14.

Exclusion Criteria:

  • Participants who have participated and may participate in any other interventional clinical trail in the future.
  • Participants with any comorbidities not suitable for avapritinib (other TKIs, Cohort 4) treatment assessed by researchers.

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

  • Observational Models: Cohort
  • Time Perspectives: Other

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
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.
Ava-mGSIT-P18
Unresectable or metastatic PDGFRA exon 18 GIST
Drug: Avapritinib
Avapritinib will be administered orally at the starting of 300 mg once daily as the label recommended. Investigators can adjust the dosage, frequency, and duration as needed.
Ava-Perioperative
Perioperative PDGFRA exon 18 GIST
Drug: Avapritinib
Avapritinib will be administered orally at the starting of 300 mg once daily as the label recommended. Investigators can adjust the dosage, frequency, and duration as needed.
Ava-mGIST-other
Unresectable or metastatic GIST without KIT exon 13，14，or PDGFRA exon 18 mutation
Drug: Avapritinib
Avapritinib will be administered orally at the starting of 300 mg once daily as the label recommended. Investigators can adjust the dosage, frequency, and duration as needed.
TKI
Unresectable or metastatic PDGFRA exon 18 GIST
Drug: Tyrosine kinase inhibitors other than avapritinib ( imatinib, sunitinib, et al )
Investigators will decide which TKI to use as well as the dosage, frequency, and duration.

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
Time Frame
Incidence and severity of adverse events(AE) and serious adverse events(SAE)in cohort 1, 2, and 3
Time Frame: AEs were collected from the start of study drug until 30 days after the last dose, SAEs were collected from the date of the informed consent signature until 30 days after the last dose of study drug, up to 3 years.
AEs were collected from the start of study drug until 30 days after the last dose, SAEs were collected from the date of the informed consent signature until 30 days after the last dose of study drug, up to 3 years.
Dose adjustment of avapritinib in cohort 1, 2, and 3
Time Frame: From the start of study drug until 30 days after the last dose, up to 3 years.
From the start of study drug until 30 days after the last dose, up to 3 years.

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.
CStone Pharmaceuticals

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.
August 29, 2022

Primary Completion (Actual)

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.
September 30, 2024

Study Completion (Actual)

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.
September 30, 2024

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).
May 9, 2022

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.
May 16, 2022

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.
May 19, 2022

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.
February 11, 2026

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.
February 9, 2026

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.
November 1, 2024

More Information

Terms related to this study

Keywords

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.
  • Avapritinib-4-001

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.

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