Objective Response Rate of Ivonescimab With Chemotherapy in Locally Advanced Resectable Oral and Oropharyngeal Squamous Cell Carcinoma

July 6, 2026 updated by: Zhujiang Hospital
To investigate the neoadjuvant chemoimmunotherapy regimen of Ivonescimab combined with chemotherapy (Paclitaxel plus Cisplatin/Carboplatin) for the treatment of locally advanced resectable oral squamous cell carcinoma and oropharyngeal squamous cell carcinoma.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Detailed Description

Two cycles of treatment with Ivonescimab combined with chemotherapy were administered, with an interval of 3 weeks between the two cycles. Oral swab and saliva samples were collected within 3 days prior to the initiation of the first cycle of Ivonescimab plus chemotherapy, within 3 days prior to the initiation of the second cycle, and within 3 days prior to surgery. Intraoperatively, tumor tissues and paracancerous tissues were harvested. A 3 mm-thick section of the resected primary tumor lesion was obtained for pathological examination to investigate the tumor regression pattern.

Study Type

Observational

Enrollment (Estimated)

20

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 Locations

  • China
    • Guangdong
      • Guangzhou, Guangdong, China, 510282
        • Not yet recruiting
        • Department of Stomatology, Zhujiang Hospital, Southern Medical University, Haizhu District, Guangzhou
        • Contact:
        • Contact:
      • Guangzhou, Guangdong, China, 510282
        • Recruiting
        • Department of Stomatology, Zhujiang Hospital, Southern Medical University,Haizhu District
        • Contact:
        • 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

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Patients were diagnosed with oral squamous cell carcinoma (OSCC) (a carcinoma arising from the oral mucosal epithelium with squamous differentiation, involving the mobile tongue, buccal mucosa, gingiva, hard palate, floor of the mouth and other oral mucosal sites) or oropharyngeal squamous cell carcinoma (OPSCC) (a carcinoma arising from the oropharyngeal mucosal epithelium with squamous differentiation, involving the base of tongue, vallecula epiglottica, lateral and posterior walls of the oropharynx, as well as the soft palate and uvula). All patients were confirmed as locally advanced diseases according to the 8th edition of the American Joint Committee on Cancer (AJCC) staging criteria: Stage III/IVA for OSCC or HPV-negative OPSCC, and Stage II/III for HPV-positive OPSCC.

Description

Inclusion Criteria:

  1. Histopathologically diagnosed as oral squamous cell carcinoma (OSCC) or oropharyngeal squamous cell carcinoma (OPSCC)
  2. Patients staged according to the AJCC criteria (8th edition) as locally advanced (Stage III/IVA oral cancer, HPV-negative oropharyngeal cancer, or Stage II/III HPV-positive oropharyngeal cancer) and assessed by the investigators as resectable.
  3. Age 18 to 80 years
  4. Complete blood count (CBC): White blood cell (WBC) count ≥3×10⁹/L; Platelet (PLT) count ≥75×10⁹/L; Hemoglobin (Hb) concentration ≥80g/L
  5. Liver function: Aspartate transaminase (AST) and Alanine transaminase (ALT) ≤2.5 times the upper limit of normal (ULN)
  6. Kidney function: Estimated glomerular filtration rate (eGFR) > 50 mL/min
  7. Patients must have adequate function of vital organs (including cardiac, pulmonary, thyroid, and other organs) and a general condition that allows tolerance of the treatment regimen of this study.
  8. Sign the Informed Consent Form (ICF)

Exclusion Criteria:

  1. Pregnancy or lactation (for female participants)
  2. A history of epilepsy or mental illness that is not effectively controlled
  3. Unresolved toxicities of grade > 2 per CTCAE criteria resulting from prior anticancer therapy
  4. Other conditions deemed unsuitable for study participation by the investigators, including patients with autoimmune diseases or those at high risk of bleeding due to various causes

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

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
ORR
Time Frame: Up to 8 weeks
According to RECIST version 1.1, it is defined as the proportion of patients who achieved Complete Response (CR) or Partial Response (PR).
Up to 8 weeks

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Tumor regression Pattern
Time Frame: Perioperative/ Periprocedural
Classification of tumor regression as concentric or non-concentric based on pathological assessment of resected primary tumor specimens. Concentric regression pattern: The residual tumor presents as a single mass with scattered microscopic satellite foci in the surrounding tissues. Non-concentric regression pattern: The tumor dissociates into multiple discretenlesions and is widely scatterd within the stroma.
Perioperative/ Periprocedural
Two-year progression-free survival rate
Time Frame: 2 Years
The proportion of patients who remain alive and progression-free for 2 years after treatment
2 Years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Zhujiang Hospital

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)

January 26, 2026

Primary Completion (Estimated)

August 30, 2026

Study Completion (Estimated)

August 30, 2028

Study Registration Dates

First Submitted

December 28, 2025

First Submitted That Met QC Criteria

July 6, 2026

First Posted (Actual)

July 7, 2026

Study Record Updates

Last Update Posted (Actual)

July 7, 2026

Last Update Submitted That Met QC Criteria

July 6, 2026

Last Verified

June 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2025-KY-452

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

Yes

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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