Safety, Tolerability, Pharmacokinetics and Preliminary Antitumor Activity of SIM0348 in Advanced Solid Tumors

August 21, 2026 updated by: Jiangsu Simcere Pharmaceutical Co., Ltd.

A Phase I, First-in-Human, Open-Label Study to Investigate the Safety, Tolerability, Pharmacokinetics and Preliminary Antitumor Activity of SIM0348 in Subjects With Advanced Solid Tumors

This is a multicenter, open label, phase I trial to evaluate the safety and tolerability, pharmacokinetic/ pharmacodynamic characteristics and to assess the preliminary efficacy of SIM0348 as monotherapy or with sintilimab in adult subjects with advanced and metastatic solid tumors. The trial starts with a dose escalation and dose expansion part (Part 1) followed by a cohort expansion part (Part 2).

Study Overview

Status

Status

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

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 (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.
49

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
    • Guangdong
      • Guangzhou, Guangdong, China
        • Sun Yat-sen University 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

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Adults 18 years of age or older
  • Must have failed at least one established standard anti-cancer therapies
  • Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
  • Life expectancy at least 12 weeks
  • Adequate hematologic and end organ function
  • Histologic documentation of locally advanced, recurrent, or metastatic incurable malignancy that has progressed after at least one available standard therapy; or for which standard therapy has proven ineffective, intolerable, or considered inappropriate; or for which a clinical trial of an investigational agent is a recognized standard of care
  • Confirmed availability of representative tumor specimens
  • Measurable disease according to RECIST Version 1.1

Exclusion Criteria:

  • Malignancies other than disease under study within 2 years prior to Day 1 of Cycle 1
  • Primary central nervous system (CNS) malignancy, or untreated/active CNS metastases
  • History of interstitial lung disease, evidence of active pneumonitis (history of radiation pneumonitis in the radiation field [fibrosis] is permitted), and active pneumonia that are considered inappropriate by the investigator
  • History of severe hypersensitivity reactions to chimeric or humanized antibodies or fusion proteins
  • History of autoimmune disease
  • Positive human immunodeficiency virus (HIV) test
  • Severe infection within 2 weeks prior to the first dose of study treatment
  • Significant cardiovascular disease
  • History of allogeneic tissue/solid organ transplant or graft-versus-host disease
  • Known clinically significant liver disease

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: 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: Part 1A ( SIM0348 Monotherapy)
Part 1A (dose escalation and dose expansion) Cohorts of at least 3 participants each will be treated with escalating doses of SIM0348 alone or in combination with Sintilimab . Dose expansion part will be decided based on the findings of dose escalation part. Part 1A was to evaluate single agent SIM0348 once weekly or once every 3 weeks.
Drug: SIM0348
Several dose levels will be evaluated for SIM0348 administered as a single agent . SIM0348 will be given via IV infusion on Day 1, Day 8, Day 15, Day 22 of each cycle (28-day or depending on study cohort and phase) until disease progression or loss of clinical benefit.
Experimental: Part 1B (SIM0348 + Sintilimab )
Part 1B (dose escalation and dose expansion) Cohorts of at least 3 participants each will be treated with escalating doses of SIM0348 alone or in combination with Sintilimab. Dose expansion part will be decided based on the findings of dose escalation part. In Part 1B, selected dose from Part 1A were evaluated in Part 1B when they were combined with Sintilimab (200mg once every 3 weeks)
Drug: SIM0348 + Sintilimab
Selected doses from Part 1A will be evaluated for SIM0348 when they were combined with Sintilimab (200mg once every 3 weeks).
Experimental: Part 2A (SIM0348 Monotherapy Cohort Expansion)
Selected doses from Part 1A will be evaluated for SIM0348 administered as a single agent. SIM0348 will be given via IV infusion until disease progression or loss of clinical benefit.
Drug: SIM0348
Several dose levels will be evaluated for SIM0348 administered as a single agent . SIM0348 will be given via IV infusion on Day 1, Day 8, Day 15, Day 22 of each cycle (28-day or depending on study cohort and phase) until disease progression or loss of clinical benefit.
Experimental: Part 2B (SIM0348 + Sintilimab Cohort Expansion)
Selected doses from Part 1B will be evaluated for SIM0348 when they were combined with Sintilimab (200mg once every 3 weeks)
Drug: SIM0348 + Sintilimab
Selected doses from Part 1A will be evaluated for SIM0348 when they were combined with Sintilimab (200mg once every 3 weeks).

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
Part 1: Dose-limiting toxicity (DLT)
Time Frame: DLT evaluation window was from Baseline to the end of Cycle 1 (up to 28 days)
DLT evaluation window was from Baseline to the end of Cycle 1 (up to 28 days)
Part 2: Objective response rate (ORR) assessed by Investigator per RECIST v.1.1
Time Frame: up to approximately 2 years
To evaluate the anti-tumor activity of SIM0348 alone and in combination with Sintilimab
up to approximately 2 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.
Jiangsu Simcere 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.
March 29, 2023

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.
April 30, 2025

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.
April 30, 2026

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).
January 29, 2023

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.
February 6, 2023

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.
February 8, 2023

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.
August 25, 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.
August 21, 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.
April 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.
  • SIM0348-101

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

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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