Paclitaxel Polymersomes + Carboplatin + Adebelimab: Neoadjuvant Phase Ⅱ Single-Arm Study for Resectable Mucosal Melanoma

January 4, 2026 updated by: xizhi wen, Sun Yat-sen University

A Single-Arm, Phase Ⅱ Exploratory Study of Neoadjuvant Therapy With Paclitaxel Polymersomes for Injection Combined With Carboplatin and Adebelimab in the Treatment of Resectable Mucosal Melanoma

The primary objective of this study is to evaluate the pathological response rate of neoadjuvant therapy with paclitaxel polymersomes for injection combined with carboplatin and adebrelimab in patients with resectable mucosal melanoma.Subjects will receive the combination therapy of paclitaxel polymersomes for injection, carboplatin and adebrelimab prior to surgery, with a treatment cycle of 3 weeks and a total of 3 cycles.After completing 3 cycles of treatment, subjects will undergo curative surgery. Pathologists will evaluate the surgically resected specimens to determine the status of pathological response, and immunohistochemical assays will be performed to assess the intensity of immune activation within the tumor microenvironment.

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.
32

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 2

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, 510000
        • Recruiting
        • Sun yat-sen University Cancer Center
        • Contact:

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. Age ≥ 18 years old.
  2. Histopathologically confirmed resectable mucosal melanoma.
  3. Subjects must provide 5 formalin-fixed paraffin-embedded (FFPE) tissue sections collected before treatment, or be willing to undergo needle biopsy for pathological tissue acquisition to facilitate pathological assessment.
  4. ECOG (Performance Status, PS) score of 0-1.
  5. No prior treatment with immune checkpoint inhibitors such as anti-CTLA-4, anti-PD-1, or anti-PD-L1 monoclonal antibodies.
  6. No prior treatment with taxane-based drugs.
  7. Presence of measurable lesions (per RECIST 1.1 criteria).
  8. No history of immunosuppressant use within 6 months prior to enrollment.

  9. Hematological and biochemical test results meeting the following criteria:

    i. Neutrophil count ≥ 1,500 × 10⁹/L; ii. Platelet count ≥ 100 × 10⁹/L; iii. Hemoglobin > 9.0 g/dL; iv. Serum creatinine ≤ 1.5 × upper limit of normal (ULN) or creatinine clearance (CrCl) ≥ 40 mL/min; v. Aspartate aminotransferase (AST)/Alanine aminotransferase (ALT) ≤ 3 × ULN; vi. Total bilirubin ≤ 1.5 × ULN.

  10. Women of childbearing potential must have a negative serum or urine pregnancy test and agree to use an appropriate contraceptive method (barrier contraception or oral contraceptives).

Exclusion Criteria:

  1. Presence of distant metastatic lesions.
  2. Active autoimmune disease. Note: Patients with vitiligo, type 1 diabetes mellitus, or Hashimoto's thyroiditis with hypothyroidism who only require hormone replacement therapy may be enrolled if there is no evidence of significant disease recurrence.
  3. Need for systemic corticosteroid therapy (> 10 mg prednisolone [or equivalent]/daily) or other immunosuppressant use within 14 days after enrollment. Note: Inhaled or topical corticosteroids, or adrenal hormone replacement therapy (> 10 mg prednisolone [or equivalent]/daily) are acceptable for patients without obvious autoimmune diseases.
  4. Concurrent diagnosis of other malignant tumors requiring anti-tumor treatment. Note: Patients may be considered for enrollment if the other malignant tumor has achieved complete remission for 2 years or more and no additional anti-tumor treatment is required during the study period.
  5. Patients who are medically, psychologically, or physically unable to complete the study or understand the information provided in the patient brochure, as assessed by the investigator.
  6. Prior treatment with anti-PD-1, anti-PD-L1, anti-PD-L2, anti-CTLA-4, or other drugs targeting T-cell costimulatory or immune regulatory pathways.
  7. Prior chemotherapy with taxane-based drugs.
  8. Positive HIV test result or confirmed diagnosis of acquired immunodeficiency syndrome (AIDS).
  9. Known hypersensitivity to the study drugs.
  10. Pregnant or lactating women.

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: 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: Paclitaxel Polymersomes Combined with Carboplatin and Adebelimab
Drug: Paclitaxel Polymersomes Combined with Carboplatin and Adebelimab
Chemotherapeutic agents are administered on Day 1 of each cycle: paclitaxel polymersomes for injection is given first, followed by carboplatin.Adebelimab injection is administered on Day 2 of each cycle.Patients will receive a maximum of 3 cycles of neoadjuvant chemotherapy combined with immunotherapy before surgery.Patients who are evaluated as resectable 3 weeks after the last cycle of chemotherapy will undergo radical surgery.
Procedure: Radical Surgery
Chemotherapeutic agents are administered on Day 1 of each cycle: paclitaxel polymersomes for injection is given first, followed by carboplatin.Adebelimab injection is administered on Day 2 of each cycle.Patients will receive a maximum of 3 cycles of neoadjuvant chemotherapy combined with immunotherapy before surgery.Patients who are evaluated as resectable 3 weeks after the last cycle of chemotherapy will undergo radical surgery.

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
Pathologic response rate
Time Frame: 8 weeks
The proportion of patients with less than 50% residual tumor cells in the surgically resected pathological specimens, including those who achieved pathological complete response (pCR), major pathological response (MPCR) and partial pathological response (pPR).
8 weeks

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
overall response rate
Time Frame: 8 weeks
The proportion of patients who achieve complete response (CR) or partial response (PR) evaluated according to the RECIST 1.1 criteria based on imaging examinations.
8 weeks
Surgical Resection Rate
Time Frame: 8 weeks
calculated as the number of patients who underwent scheduled surgical resection divided by the number of enrolled patients.
8 weeks
Acute and Chronic Toxicities and Adverse Reactions
Time Frame: 8 weeks
8 weeks
relapse-free survival
Time Frame: 8 weeks
8 weeks
Assessment of Immune Activation Intensity in the Tumor Microenvironment
Time Frame: 8 weeks
defined as the magnitude of changes in the proportions of CXCL13, CD4, CD8, CD19, and FOXP3-positive cells and the structural alterations of tertiary lymphoid organs (TLOs) in the tumor microenvironment before and after treatment.
8 weeks

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.
Sun Yat-sen University

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 20, 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.
March 20, 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.
March 20, 2027

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 4, 2026

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.
January 4, 2026

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.
January 13, 2026

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.
January 13, 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.
January 4, 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.
January 1, 2026

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.
  • B2024-799-01

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

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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