1922GCCC: Pembro and Bavituximab for Squamous Cell Carcinoma of Head and Neck

February 17, 2026 updated by: University of Maryland, Baltimore

1922GCCC: PHASE 2 STUDY OF PEMBROLIZUMAB AND BAVITUXIMAB FOR PROGRESSIVE RECURRENT/METASTATIC SQUAMOUS CELL CARCINOMA OF THE HEAD AND NECK

This phase II single arm study is being done to determine if bavituximab could potentially synergize with PD-1 inhibitor therapy to generate an effective anti-tumor immune response in patients with recurrent/metastatic squamous cell head and neck cancer (HNSCC) who progressed on a PD-1 inhibitor.

Study Overview

Status

Active, not recruiting

Conditions

Intervention / Treatment

Detailed Description

The goal of this study is to assess whether treatment with bavituximab shifts the cellular balance to favor an effective T-cell mediated antitumor response resulting to an enhanced response in conjunction with pembrolizumab. Bavituximab is a chimeric (human/mouse) monoclonal antibody that targets phosphatidylserine (PS). PS facilitates the recognition and clearance of dying cells, triggering the release of immunosuppressive cytokines and inhibiting the production of proinflammatory cytokines. Within the tumor microenvironment, PS polarizes macrophages toward an immunosuppressive phenotype. Bavituximab upregulates the adaptive T cell-mediated response through crosslinking FCRγ and dampening of signaling between PS and PS receptors on immunosuppressive myeloid-derived suppressor cells.

Thus, the investigators are doing this phase II single arm study to determine if bavituximab could potentially synergize with PD-1 inhibitor therapy to generate an effective anti-tumor immune response in patients with recurrent/metastatic squamous cell head and neck cancer (HNSCC) who progressed on a PD-1 inhibitor.

Study Type

Interventional

Enrollment (Actual)

7

Phase

  • 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 Locations

  • United States
    • Maryland
      • Baltimore, Maryland, United States, 21201
        • University of Maryland Medical 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

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Patients will have recurrent/metastatic head and neck cancer and will have radiographic evidence of progression on prior immune checkpoint inhibitor therapy, including nivolumab, pembrolizumab, durvalumab and atezolizumab. Patients must have progressed on prior platinum therapy either in the recurrent setting or within 6 months of treatment with cisplatin and radiation in the potentially curative setting.
  • Be willing and able to provide written informed consent/assent for the trial.
  • Be > or equal to 18 years of age on day of signing informed consent.
  • Have measurable disease based on RECIST 1.1.
  • Be willing to provide tissue from a newly obtained core or excisional biopsy of a tumor lesion. Newly-obtained is defined as a specimen obtained up to 6 weeks (42 days) prior to initiation of treatment on Day 1. Subjects for whom newly-obtained samples cannot be provided (e.g. inaccessible or subject safety concern) may submit an archived specimen only upon agreement from the PI.
  • Have a performance status of 0 or 1 on the ECOG Performance Scale.
  • Demonstrate adequate organ function as defined in Table 1, all screening labs should be performed within 10 days of treatment initiation.
  • Female subject of childbearing potential must have a negative urine or serum pregnancy within 72 hours prior to receiving the first dose of study medication. If the urine test is positive or cannot be confirmed as negative, a serum pregnancy test will be required.
  • Female subjects of childbearing potential (Section 6.2) must be willing to use an adequate method of contraception as outlined in Section 6.2 - Contraception, for the course of the study through 120 days after the last dose of study medication.

Note: Abstinence is acceptable if this is the usual lifestyle and preferred contraception for the subject.

-Male subjects of childbearing potential (Section 6.2) must agree to use an adequate method of contraception as outlined in Section 6.2- Contraception, starting with the first dose of study therapy through 120 days after the last dose of study therapy.

Note: Abstinence is acceptable if this is the usual lifestyle and preferred contraception for the subject.

Exclusion Criteria:

  • Is currently participating and receiving study therapy or has participated in a study of an investigational agent and received study therapy or used an investigational device within 4 weeks of the first dose of treatment.
  • Has a diagnosis of immunodeficiency or is receiving systemic steroid therapy or any other form of immunosuppressive therapy within 7 days prior to the first dose of trial treatment.
  • Has a known history of active TB (Bacillus Tuberculosis).
  • Hypersensitivity to pembrolizumab or any of its excipients. History of hypersensitivity to other antibodies can be discussed with the PI to determine eligibility.
  • Has had a prior anti-cancer monoclonal antibody (mAb) within 4 weeks prior to study Day 1 or who has not recovered (i.e., ≤ Grade 1 or at baseline) from adverse events due to agents administered more than 4 weeks earlier.
  • Has had prior chemotherapy, targeted small molecule therapy, or radiation therapy within 2 weeks prior to study Day 1 or who has not recovered (i.e., ≤ Grade 1 or at baseline) from adverse events due to a previously administered agent.

Note: Subjects with ≤ Grade 2 neuropathy are an exception to this criterion and may qualify for the study.

Note: If subject received major surgery, they must have recovered adequately from the toxicity and/or complications from the intervention prior to starting therapy.

  • Has experienced an immune-related adverse event requiring discontinuation of a prior checkpoint inhibitor.
  • Has a known additional malignancy that is progressing or requires active treatment. Exceptions include basal cell carcinoma of the skin or squamous cell carcinoma of the skin that has undergone potentially curative therapy or in situ cervical cancer.
  • Has known active central nervous system (CNS) metastases and/or carcinomatous meningitis. Subjects with previously treated brain metastases may participate provided they are stable (without evidence of progression by imaging for at least four weeks prior to the first dose of trial treatment and any neurologic symptoms have returned to baseline), have no evidence of new or enlarging brain metastases, and are not using steroids for at least 7 days prior to trial treatment. This exception does not include carcinomatous meningitis which is excluded regardless of clinical stability.
  • Has active autoimmune disease that has required systemic treatment in the past 2 years (i.e. with use of disease modifying agents, corticosteroids or immunosuppressive drugs). Replacement therapy (e.g., thyroxine, insulin, or physiologic corticosteroid replacement (such as prednisone 10mg daily or its equivalent) for adrenal or pituitary insufficiency, etc.) is not considered a form of systemic treatment.
  • Has known history of, or any evidence of active, non-infectious pneumonitis.
  • Has an active infection requiring systemic therapy.
  • Has a history or current evidence of any condition, therapy, or laboratory abnormality that might confound the results of the trial, interfere with the subject's participation for the full duration of the trial, or is not in the best interest of the subject to participate, in the opinion of the treating investigator.
  • Has known psychiatric or substance abuse disorders that would interfere with cooperation with the requirements of the trial.
  • Is pregnant or breastfeeding, or expecting to conceive or father children within the projected duration of the trial, starting with the pre-screening or screening visit through 120 days after the last dose of trial treatment.
  • Has a known history of Human Immunodeficiency Virus (HIV) (HIV 1/2 antibodies).
  • Has known active Hepatitis B (e.g., HBsAg reactive) or Hepatitis C (e.g., HCV RNA [qualitative] is detected).
  • Has received a live vaccine within 30 days of planned start of study therapy. Note: Seasonal influenza vaccines for injection are generally inactivated flu vaccines and are allowed; however intranasal influenza vaccines (e.g., Flu-Mist®) are live attenuated vaccines, and are not allowed.

Patients with a condition requiring systemic treatment with either corticosteroids (>10 mg daily prednisone equivalent) or other immunosuppressive medications within 14 days of randomization. Inhaled or topical steroids and adrenal replacement steroid doses < 10 mg daily prednisone equivalent, are permitted in the absence of active autoimmune disease.

Inclusion of Women and Minorities

Both men and women of all races and ethnic groups are eligible for this trial.

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
Intervention / Treatment
Experimental: Pembrolizumab + Bavituximab
Pembro and Bavituximab for progressive recurrent/metastatic squamous cell carcinoma of head and neck
Drug: Bavituximab
Bavituximab is a chimeric (human/mouse) monoclonal antibody (mAb) derived from murine mAb 3G4 that targets phosphatidylserine (PS) after binding to β2-glycoprotein 1 (β2-GP1).
Drug: Pembrolizumab
Pembrolizumab is a highly selective humanized mAb designed to block the interaction between PD-1 and its ligands, PD-L1 and PD-L2.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
CR+PR
Time Frame: From date of randomization until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 55 months.
overall response rate
From date of randomization until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 55 months.

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Progression
Time Frame: From date of randomization until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 55 months.
Progression free survival
From date of randomization until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 55 months.
Disease Progression
Time Frame: From date of randomization until the date of first documented progression up to 100 weeks
Number of participants with disease progression. For duration of response, CT imaging and RECIST criteria were reviewed to measure patient's response and time of that duration. One cycle is 21 days.
From date of randomization until the date of first documented progression up to 100 weeks
Survival
Time Frame: From date of randomization until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 55 months.
Overall survival
From date of randomization until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 55 months.
Participants With Laboratory Correlates of Response
Time Frame: through study completion, an average of 1 year

Number of participants with laboratory correlates of response.

The following outcomes are being measured:

PD-L1 expression pre and post treatment Presence of TILs (tumor infiltrating lymphocytes) pre and post treatment Assessment of immune markers in pre-treatment fresh and post-treatment biopsies and blood.

Assessment of genomics and tumor mutation burden in select patients.

These outcome measures are determined through archival tumor tissue and next generation sequencing.
through study completion, an average of 1 year

Collaborators and Investigators

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

Sponsor

University of Maryland, Baltimore

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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 13, 2020

Primary Completion (Actual)

September 1, 2024

Study Completion (Estimated)

January 1, 2027

Study Registration Dates

First Submitted

October 22, 2019

First Submitted That Met QC Criteria

November 4, 2019

First Posted (Actual)

November 5, 2019

Study Record Updates

Last Update Posted (Actual)

February 19, 2026

Last Update Submitted That Met QC Criteria

February 17, 2026

Last Verified

February 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 1922GCCC_HP-00085668

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

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.

Clinical Trials on Squamous Cell Carcinoma

Clinical Trials on Bavituximab

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Mexico

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Subscribe