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Solid TumorPhase 1NCT04991506

A Study of ES102 (OX40 Agonist) in Combination With JS001 in Patients With Advanced Solid Tumors

A Phase 1 study testing ES102 and JS001 in people with Solid Tumor and Neoplasms, run by Elpiscience Biopharma, Ltd. at 1 site in China.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of this study is to evaluate the safety, tolerance, Dose-Limiting Toxicity (DLT), Maximum tolerated dose (MTD) and/or Recommended Phase 2 Dose (RP2D) of ES102 (OX40 agonist) in combination with JS001 (anti-PD-1 checkpoint inhibitor) in patients with advanced solid tumors. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Solid Tumor, Neoplasms, Malignant Tumor
What is being tested?
ES102 and JS001
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
30 participants
Where
1 siteChina
Study dates
15 Oct 2021to 17 May 2024
Phase
Phase 1
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • 1.Males or females aged ≥18 years.
  • 2.Ability to understand and the willingness to sign a written informed consent form.
  • 3.Subjects with pathological or cytological diagnosed advanced solid tumor, whose disease has progressed despite standard therapies, or for whom no further standard therapy exists, or who is unsuitable for available standard therapies and at least has progressed after receiving first line therapy.
  • 4.PD-L1 by IHC: Parts 1 and Part 2 D2-D3: IHC result mandatory but any score allowed. Part 2 D1: Tumor Proportion Score (TPS) ≥ 1%.
  • 5.At least one measurable lesion is required (RECIST v1.1)
  • 6.Adequate hematologic, coagulation, hepatic and renal function as defined per protocol.
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  • 7.Eastern Cooperative Oncology Group performance status (ECOG PS) of 0 or 1.
  • 8.Estimated life expectancy, in the judgment of the investigator, of at least 12 weeks.
  • 9.Male and female subjects of childbearing potential and their spouses must be willing to use feasible contraceptive methods considered effective by the investigator, from the time of signing informed consent and for the duration of study participation through 3 months, following the last dose of study drug. Postmenopausal women are considered to have no fertility potential only if menostasis lasts for at least 12 months.

Who cannot join

  • 1.Prior exposure to OX40 agonists.
  • 2.Receipt of any anticancer investigational product or any approved anticancer drug(s) or biological product(s) within 4 weeks prior to the first dose of study drug with certain exceptions.
  • 3.Receipt of non-CNS adjuvant radiation therapy within 1 week prior to the first dose, receipt of radiation therapy within 2 weeks or with radiation pneumonia, have not recovered from radiation-related toxicity or still require hormonal treatment for radiation-related toxicity.
  • 4.Known allergies to CHO-produced antibodies, which in the opinion of the Investigator suggests an increased potential for an adverse hypersensitivity to ES102.
  • 5.Subjects with allergic reactions to the active ingredients of JS001 or any of the excipients.
  • 6.Treatment with systemic immunosuppressive medications within 4 weeks prior to the first dose of study drug. Certain exceptions as defined in protocol apply.
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  • 7.Receipt of live viral vaccine treatment within 4 weeks prior to the first dose of the study drug.
  • 8.Prior organ allograft transplantations or allogeneic peripheral blood stem cell (PBSC) or bone marrow (BM) transplantation.
  • 9.Subjects with primary or metastatic brain or meningeal tumors.
  • 10.Grade ≥ 3 immune-related adverse events (irAEs) or irAE that lead to discontinuation of prior immunotherapy. Some exceptions as defined per protocol apply.
  • 11.Subject has not recovered from all AEs of previous anticancer therapies to baseline or ≤ Grade 1 per CTCAE v5.0 before the first dose of study drug. Certain exceptions as defined in protocol apply.
  • 12.Hematologic malignancies.
  • 13.Receipt of treatment with G-CSF, GM-CSF, Thrombopoietic drugs or EPO within 14 days prior to the first dose of the study drug.
  • 14.Patients with other malignancies within 2 years before screening shall be excluded in Part B. Some exceptions as defined per protocol apply.
  • 15.Active autoimmune disease or documented history of autoimmune disease that required systemic steroids or other immunosuppressive medications. Certain exceptions as defined in protocol apply.
  • 16.Active interstitial lung disease (ILD) or pneumonitis or a history of ILD or pneumonitis requiring treatment with steroids or other immunosuppressive medications.
  • 17.Clinically significant cardiac condition, including myocardial infarction, uncontrolled angina, cerebrovascular accident, or other acute uncontrolled heart disease < 6 months; left ventricular ejection fraction (LVEF) < 50%; New York Heart Association (NYHA) Class III or IV congestive heart failure; or uncontrolled hypertension.
  • 18.History of pulmonary embolism within 12 weeks prior to the first dose of study drug administration.
  • 19.Major surgery within 4 weeks prior to enrollment on this trial.
  • 20.History of hepatitis B, hepatitis C, or human immunodeficiency virus (HIV) infection for Part 1. Exceptions as defined in protocol for Part 2 will apply.
  • 21.Receiving the systemic anti-infectious drug treatments within 4 weeks prior to the first dose of study drug.
  • 22.Pregnant or nursing females.
  • 23.Any known, documented, or suspected history of substance abuse that would preclude subject from participation, certain exceptions as defined in protocol apply.
  • 24.The subject is inappropriate to participate in this study for other reasons in the judgment of the Investigator.

Trial locations and contacts

1 site in 1 country.

China1 site
  • Jilin Cancer Hospital

    Changchun, Jilin

Other trials in China

About this study

Official title: An Open-label, Multicenter, Dose-escalation and Cohort Expansion Phase 1 Clinical Study of ES102 in Combination With JS001 in Patients With Advanced Solid Tumors

The purpose of this study is to evaluate the safety, tolerance, Dose-Limiting Toxicity (DLT), Maximum tolerated dose (MTD) and/or Recommended Phase 2 Dose (RP2D) of ES102 (OX40 agonist) in combination with JS001 (anti-PD-1 checkpoint inhibitor) in patients with advanced solid tumors.

Being tested
ES102, JS001
Keywords
ES102, JS001, OX40, PD-1, Solid Tumors, Phase 1, INBRX-106
Medical subject headings
Neoplasms

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • ES102Drug

    The active ingredient of ES102 is a recombinant, humanized, hexavalent IgG antibody that targets the human OX40 receptor (TNFRSF4)

  • JS001Drug

    Also called Toripalimab

    JS001 is administered via intravenous injection once every 21 days, every 21 days as a treatment cycle.

Study groups in NCT04991506
Study groupRoleWhat they receive
Part 1 ES102 Escalation in combination with JS001ExperimentalES102 will be escalated, in combination with JS001, in patients with advanced solid tumors.
Receives: Drug: ES102; Drug: JS001
Part 2 ES102 Expansion in combination with JS001ExperimentalSubjects will be treated with ES102 at the RP2D in combination with JS001.
Receives: Drug: ES102; Drug: JS001

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. MTD

    Maximum Tolerated Dose (MTD) of ES102 in combination with JS001

    Measured: 2-4 years

  2. Frequency and severity of adverse events of ES102 in combination with JS001

    The safety profile of ES102 in combination with JS001 will be assessed by the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE), version 5.0.

    Measured: 2-4 years

  3. RP2D

    Recommended Phase 2 Dose (RP2D) of ES102 in combination with JS001

    Measured: 2-4 years

Secondary outcomes (6)
  1. Area under the serum concentration time curve (AUC) of ES102 in combination with JS001

    Area under the serum concentration time curve (AUC) of ES102 in combination with JS001 will be determined.

    Measured: 2-4 years

  2. Maximum observed serum concentration of ES102 in combination with JS001

    Maximum observed serum concentration of ES102 in combination with JS001 will be determined.

    Measured: 2-4 years

  3. Trough observed serum concentration (Ctrough) of ES102 in combination with JS001

    Trough observed serum concentration (Ctrough) of ES102 in combination with JS001 will be determined.

    Measured: 2-4 years

  4. Time to Cmax (Tmax) of ES102 in combination with JS001

    Time to Cmax (Tmax) of ES102 in combination with JS001 will be determined.

    Measured: 2-4 years

  5. Immunogenicity of ES102 in combination with JS001

    Frequency of anti-drug antibodies (ADA) against ES102 in combination with JS001 will be determined.

    Measured: 2-4 years

  6. Anti-tumor activity of ES102 in combination with JS001

    Tumor response will be determined by the revised Response Evaluation Criteria in Solid Tumors version 1.1 (RECISTv1.1).

    Measured: 2-4 years

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted5 Aug 2021
  2. Study start15 Oct 2021
  3. Primary completion17 May 2024
  4. Study completion17 May 2024

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Sequential
Masking
None (open label)
Enrolment
30 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04991506
Sponsor's protocol ID
ES102-1002
Status last verified
Jun 2025
First submitted
19 Jul 2021
Last updated
23 Jun 2025
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing ES102 and JS001 in people with Solid Tumor and Neoplasms, run by Elpiscience Biopharma, Ltd. at 1 site in China.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 9 inclusion and 24 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 23 Jun 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

MTD (time frame: 2-4 years). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 23 Jun 2025.

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