A Study to Assess the Safety, Tolerability, and Pharmacokinetics of ABSK-021 in Patients With Advanced Solid Tumor

November 6, 2026 updated by: Abbisko Therapeutics Co, Ltd

A Phase 1, Open-Label Study of ABSK021 to Assess Safety, Tolerability, and Pharmacokinetics in Patients With Advanced Solid Tumor

This is an open-label phase 1 study to determine the safety and tolebility of oral ABSK021 in patients with advanced solid tumor as well as the Recommended Phase 2 dose (RP2D) of oral ABSK021. Preliminary antitumor activity will also be assessed.

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.

Detailed Description

The study will start with a dose escalation part of single-agent ABSK021 administered in repeated 28-day cycles in patients with advanced solid for safety and tolerability. The expansion part of oral ABSK021 at recommended dose of expansion (RDE) will be followed for further evaluating safety and tolerability among selected tumor types. Preliminary antitumor activity will also be assessed.

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.
276

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 Contact Backup

Study Locations

  • China
    • Beijing Municipality
      • Beijing, Beijing Municipality, China
        • Recruiting
        • Beijing Jishuitan Hospital
        • Contact:
          • Xiaohui Niu, MD
        • Principal Investigator:
          • Xiaohui Niu, MD
    • Guangzhou
      • Guangdong, Guangzhou, China
        • Active, not recruiting
        • The First Affiliated Hospital of Sun Yat-sen University
    • Hebei
      • Shijiazhuang, Hebei, China
        • Completed
        • Hebei Medical University Third Hospital
    • Henan
      • Zhengzhou, Henan, China
        • Completed
        • The First Affiliated Hospital of Zhengzhou Universtity
      • Zhengzhou, Henan, China
        • Active, not recruiting
        • Henan Cancer Hospital
    • Jiangsu
      • Nanjing, Jiangsu, China
        • Active, not recruiting
        • Nanjing Drum Tower Hospital
      • Nanjing, Jiangsu, China
        • Active, not recruiting
        • Jiangsu Province Hospital
    • Liaoning
      • Shenyang, Liaoning, China
        • Completed
        • Liaoning Cancer Hospital
    • Shanghai Municipality
      • Shanghai, Shanghai Municipality, China
        • Completed
        • Huashan Hospital of Fudan University
      • Shanghai, Shanghai Municipality, China
        • Completed
        • Shanghai Sixth People's Hospital
    • Shanxi
      • Xian, Shanxi, China
        • Active, not recruiting
        • Xi'an Hong Hui Hospital
    • Sichuan
      • Chengdu, Sichuan, China
        • Recruiting
        • West China Hospital of Sichuan University
        • Contact:
          • Yong Zhou, MD
        • Principal Investigator:
          • Yong Zhou, MD
    • Zhejiang
      • Hangzhou, Zhejiang, China
        • Recruiting
        • The Second Affiliated Hospital Zhejiang University School of Medicine
        • Contact:
          • Zhaoming Ye, MD
        • Principal Investigator:
          • Zhaoming Ye, MD
  • United States
    • California
      • Beverly Hills, California, United States, 90212
        • Active, not recruiting
        • Precision NextGen Oncology
    • Colorado
      • Denver, Colorado, United States, 80218-1238
        • Completed
        • SCRI at HealthOne
    • Georgia
      • Atlanta, Georgia, United States, 30322
        • Completed
        • The Winship Cancer Institute of Emory University
    • Texas
      • Houston, Texas, United States, 77030
        • Completed
        • MD Anderson Cancer Center

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

12 years and older (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Histologically confirmed solid tumors that have progressed on or intolerant to standard therapy or whom no standard therapy exists
  • ECOG (electrocorticogram) performance status 0~1
  • Life expectancy ≥ 3 months
  • Adequate organ function and bone marrow function

For patients with tenosynovial giant cell tumor (TGCT) :

  1. A diagnosis of TGCT [i ncluding pigmented villonodular synovitis (PVNS) or giant cell tumors of the tendon sheath (GCT TS) (i) that has been histologically confirmed either by a pathologist at the treating institution or a central pathologist,and (ii) where surgical resection would be associated with potentially worsening functional limitation or severe morbidity (locally advanced disease), with morbidity determined consensually by qualified personnel (eg, two surgeons or a multi disciplinary tumor board);
  2. Measurable disease as defined by RECIST 1.1 (except that a minimal size of 2 cm is required), assessed from MRI scans;
  3. Others

For Adolescent Cohort (China only):

  1. Patient and/or legally acceptable representative should understand, sign, and date the written voluntary informed consent form prior to screening.
  2. Adolescents≥ 12 years of age and < 18 years at the time of informed consent.
  3. Body weight ≥ 40kg.
  4. A diagnosis of TGCT [including pigmented villonodular synovitis (PVNS) or giant cell tumors of the tendon sheath (GCT-TS)] (i) that has been histologically confirmed either by local laboratory, and (ii) unresectable, defined as confirmed by assessment by at least two clinical experts (including at least one independent expert who is not part of the trial conduct), meeting one of the following 2 requirements: ①located in a complex anatomical site, is extensively invasive, and cannot be completely resected; ②surgical operation may cause dysfunction or serious complications.
  5. Measurable disease as defined by RECIST v1.1 (with at least 1 lesion ≥ 2 cm is required), assessed by MRI scans in local site prior to dosing.
  6. Others

Exclusion Criteria:

  • Known allergy or hypersensitivity to any component of the investigational drug product Previous treatment with CSF-1(colony stimulating factor 1)/CSF-1R (colony stimulating factor 1 receptor) pathway inhibitors
  • Known additional malignancy that is progressing or required active treatment within 3 years of the first dose of study treatment
  • Inability to take oral medication or significant nausea and vomiting, malabsorption, external biliary shunt, or significant bowel resection that would preclude adequate absorption of oral medication
  • Previous anti-cancer therapy, including chemotherapy, radiotherapy, endocrine therapy or molecular targeted therapy within ≤ 5-halflife or ≤ 4 weeks (whichever is shorter) prior to initiation of study treatment (chemotherapy with nitrosourea or mitomycin should be 6 weeks prior to initiation of study treatment)
  • Major surgery within 4 weeks of the first dose of study drug and all surgical wounds must be healed and free of infection or dehiscence
  • Prior toxicities from chemotherapy, radiotherapy, and other anti-cancer therapies, including immunotherapy that have not regressed to Grade ≤2 severity (CTCAE v5.0) with the exception of alopecia and vitiligo
  • Prior corticosteroids as anti-cancer therapy within a minimum of 2 weeks of the first dose of study drug
  • Concomitant use of strong inhibitors or inducers of CYP3A4
  • Active central nervous system (CNS) metastases
  • Impaired cardiac function or clinically significant cardiac disease
  • Patients with Gilbert's Syndrome or other underlying conditions that may lead to a greater likelihood of developing LFT(liver function test) abnormalities during the study
  • Known human immunodeficiency virus or active hepatitis B, or active hepatitis C infection
  • Refractory/uncontrolled ascites or pleural effusion
  • Pregnant or nursing

For patients with tenosynovial giant cell tumor (TGCT) :

  1. Known allergy or hypersensitivity to any component of the investigational drug product
  2. For expansion part, previous treatment with CSF 1/CSF 1R pathway inhibitors (not applicable for TGCT patients in US）
  3. Others

For Adolescent Cohort (China only):

  1. Known allergy or hypersensitivity to any component of the investigational drug product.
  2. Previous treatment with highly selective inhibitors targeting CSF-1/CSF-1R prior to first dosing. However, patients who have received prior treatment with multi-kinase inhibitors that include the CSF-1/CSF-1R pathway are allowed, such as Imatinib and Nilotinib.
  3. Know additional malignancy that required active treatment and may affect the patient's participation in the study or affect the outcome of the study as assessed by the Investigator. Exceptions include cured basal cell carcinoma of skin, squamous cell carcinoma of skin, and other carcinoma in situ.
  4. Others

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: N/A
  • Interventional Model: Sequential 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: ABSK021

Dose escalation of oral ABSK021 with a starting dose of 25mg once daily will be guided by"3+3" escalation rules based on safety data until an MTD has been identified or a RDE. For each dose, patients will first receive a single dose ABSK021 tablet(s) by mouth at Day -3 and be followed by a 3-day off as a run-in period to access the safety and PK of single-dose. Then, patients will continuously receive ABSK021 once daily (QD) in repeated 28-day cycles.
Drug: ABSK021

ABSK021 oral capsule

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 AEs
Time Frame: Through study completion, an average of 6 months

Adverse events (AEs), adverse events of special interest (AESIs) and serious adverse events (SAEs)
Through study completion, an average of 6 months
Incidence of DLTs
Time Frame: At the end of Cycle 1 (each cycle is 28 days)

DLT(dose-limiting toxicity)
At the end of Cycle 1 (each cycle is 28 days)

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
PFS
Time Frame: From date of enrollment until the date of first documented progression or death, assessed up to 12 months

Progression-Free Survival (PFS)
From date of enrollment until the date of first documented progression or death, assessed up to 12 months
DoR
Time Frame: From date of enrollment until the date of first documented progression or death, assessed up to 12 months

Duration of Response (DoR)
From date of enrollment until the date of first documented progression or death, assessed up to 12 months
DCR
Time Frame: 24 weeks post-dose

Disease Control Rate (DCR)
24 weeks post-dose
Cmax
Time Frame: Pre-dose and multiple timepoints (up to 72 hours) post-dose

The peak plasma concentration of a drug after administration
Pre-dose and multiple timepoints (up to 72 hours) post-dose
tmax
Time Frame: Pre-dose and multiple timepoints (up to 72 hours) post-dose

Time to reach Cmax
Pre-dose and multiple timepoints (up to 72 hours) post-dose
Bioavailability
Time Frame: Pre-dose and multiple timepoints (up to 72 hours) post-dose

The systemically available fraction of a drug
Pre-dose and multiple timepoints (up to 72 hours) post-dose
Elimination half-life
Time Frame: Pre-dose and multiple timepoints (up to 72 hours) post-dose

The time required for the concentration of the drug to reach half of its original value
Pre-dose and multiple timepoints (up to 72 hours) post-dose

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.
Abbisko Therapeutics Co, Ltd

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Siqing Fu, MD, M.D. Anderson Cancer Center

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.
January 20, 2020

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 31, 2031

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.
December 31, 2031

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).
November 27, 2019

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.
December 9, 2019

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.
December 10, 2019

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.
November 9, 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.
November 6, 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, 2026

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.
  • ABSK021-101

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

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.

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