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Active, not recruitingNCT03690986Updated Jul 16, 2026

VX15/2503 in Combination With Ipilimumab or Nivolumab in Patients With Head and Neck Cancer

A Phase 1 interventional study of VX15/2503 and Ipilimumab in Squamous Cell Carcinoma of the Head and Neck, sponsored by Emory University. Active, not recruiting at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-07-16.

Sponsored by Emory University · Phase 1, Interventional, and Treatment

Phase
Phase 1
Study type
Interventional
Enrollment
35
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

This phase I trial studies how well anti-semaphorin 4D (SEMA4D) monoclonal antibody VX15/2503 (VX15/2503) with or without ipilimumab and/or nivolumab work in treating patients with stage I-IVA head and neck squamous cell cancer. Monoclonal antibodies, such as VX15/2503, ipilimumab, and nivolumab, may interfere with the ability of tumor cells to grow and spread.

Read the detailed description

PRIMARY OBJECTIVE:

To evaluate the effect of VX15/2503 alone and VX15/2503 in combination with immune checkpoint inhibitors, ipilimumab or nivolumab, on the immune profile in the tumor microenvironment and in peripheral blood.

SECONDARY OBJECTIVE:

To extend the previously reported safety profile of single agent VX15/2503 to the combination of VX15/2503 and immune checkpoint inhibitors, ipilimumab or nivolumab, in patients with head and neck squamous cell carcinoma.

OUTLINE: Patients are randomized to 1 of 6 groups.

GROUP A: Patients receive VX15/2503 intravenously (IV) over 60 minutes on day 1. Beginning days 17-36, patients undergo standard of care surgery.

GROUP B: Patients receive VX15/2503 IV over 60 minutes and ipilimumab IV over 90 minutes on day 1. Beginning days 17-36, patients undergo standard of care surgery.

GROUP C: Patients receive VX15/2503 IV over 60 minutes and nivolumab IV over 60 minutes on day 1. Beginning days 17-36, patients undergo standard of care surgery.

GROUP D: Patients receive nivolumab IV over 60 minutes on day 1. Beginning days 17-36, patients undergo standard of care surgery.

GROUP E: Patients receive ipilimumab IV over 90 minutes on day 1. Beginning days 17-36, patients undergo standard of care surgery.

GROUP F: Patients undergo standard of care surgery.

02

Conditions studied

  • Squamous Cell Carcinoma of the Head and Neck
03

In context

Squamous Cell Carcinoma of Head and Neck

1,680 studies on the registry are indexed under Squamous Cell Carcinoma of Head and Neck; 539 are open to participants now.

This study's enrollment of 35 is below the median of 49 across 1,432 interventional studies indexed under Squamous Cell Carcinoma of Head and Neck.

Browse Squamous Cell Carcinoma of Head and Neck studies →

Lead sponsor

Emory University is the lead sponsor of 1,386 studies on the registry; 236 are open to participants now.

Of its 229 completed or terminated interventional studies of FDA-regulated products, 174 (76%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Stage I-IVA cytologically or histologically-proven head and neck squamous cell carcinoma (HNSCC), p16 positive and negative allowed
  • Oropharyngeal tumors must have p16 testing done
  • Cancer confirmed to be surgically resectable, with surgery evaluation with planned resection
  • Archival tissue prior to treatment available from at most 6 months prior to study enrollment. Otherwise new pre-treatment biopsy mandatory
  • No prior treatment for HNSCC
  • Eastern Cooperative Oncology Group (ECOG) performance status 0 or 1
  • Absolute neutrophil count ≥ 1,500 cells/µL
  • Platelets ≥ 100,000/µL
  • Hemoglobin ≥ 9.0g/dL (may receive packed red blood cell [prbc] transfusion)
  • Total bilirubin ≤ 1.5 x the upper limit of normal (ULN)
  • Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) ≤ 2.5 x ULN
  • Albumin ≥ 3.0 g/dL
  • Serum creatinine ≤ 1.5 x ULN
  • Calculated creatinine clearance of ≤ 50 mL/min
  • International normalized ratio (INR) ≤ 1.5. Anticoagulation is allowed only with low molecular weight heparin (LMWH). Patient receiving LMW heparin on stable therapeutic dose for more than 2 weeks or with factor Xa level \< 1.1 units/mL (U/mL) are allowed on the trial
  • Willingness and ability to comply with scheduled visits, treatment plans, laboratory tests, and other study procedures
  • Ability to understand and willingness to sign a written informed consent document
  • Female subjects of childbearing potential must agree to use adequate contraception (e.g., hormonal or barrier method of birth control; abstinence) for the duration of study treatment and 3 months after completion
  • Male subjects must agree to use adequate contraception (e.g., condoms; abstinence) for the duration of study treatment and 3 months after completion
  • Female subjects of childbearing age must have a negative serum pregnancy test at study entry

Exclusion criteria

Exclusion Criteria:

  • Poor venous access for study drug administration
  • Nasopharynx cancer, cancer of unknown primary, sinonasal cancer
  • Determined not to be a surgical candidate due to medical co-morbidities
  • Treatment with chronic immunosuppressants (e.g., cyclosporine following transplantation)
  • Prior organ allograft or allogeneic bone marrow transplantation
  • Subjects with any active autoimmune disease or history of known or suspected autoimmune disease except for subjects with vitiligo, resolved childhood asthma/atopy, type I diabetes mellitus, residual hypothyroidism due to autoimmune condition only requiring hormone replacement, psoriasis not requiring systemic treatment, or conditions not expected to recur in the absence of an external trigger are permitted to enroll
  • Subjects with a condition requiring systemic treatment with either corticosteroids (> 10 mg daily prednisone equivalents) or other immunosuppressive medications within 14 days of study drug administration. Inhaled or topical steroids and adrenal replacement doses > 10 mg daily prednisone equivalents are permitted in the absence of active autoimmune disease
  • Women who are pregnant or lactating
  • Uncontrolled intercurrent illness including, but not limited to, human immunodeficiency virus (HIV)-positive subjects receiving combination antiretroviral therapy, ongoing or active infection, symptomatic congestive heart failure (New York Heart Association [NYHA] class III or IV), unstable angina pectoris, ventricular arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements
  • Other medications, or severe acute/chronic medical or psychiatric condition, or laboratory abnormality that may increase the risk associated with study participation or study drug administration, or may interfere with the interpretation of study results, and in the judgment of the investigator would make the subject inappropriate for entry into this study
  • Clinical evidence of bleeding diathesis or coagulopathy
  • Prior invasive malignancy (except non-melanomatous skin cancer, low or intermediate risk prostate cancer, or in situ carcinoma fully resected) unless disease free for a minimum of one year
  • Patients that have had prior treatment for HNSCC are not eligible
  • Active bacterial or fungal infections requiring systemic treatment within 7 days of treatment
  • Use of other investigational drugs (drugs not marked for any indication) within 28 days or at least 5 half-lives (whichever is longer) before study drug administration
  • History of severe hypersensitivity reactions to other monoclonal antibodies
  • Non-oncology vaccines within 28 days prior to or after any dose of ipilimumab
  • No archival tissue available pre-study treatment, and repeat biopsy not feasible
05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
35 participants (actual)

Study arms

  • Experimental
    Group A (VX15/2503)

    Patients receive VX15/2503 IV over 60 minutes on day 1. Beginning days 17-36, patients undergo standard of care surgery.

    Biological: VX15/2503

  • Experimental
    Group B (VX15/2503, ipilimumab)

    Patients receive VX15/2503 IV over 60 minutes and ipilimumab IV over 90 minutes on day 1. Beginning days 17-36, patients undergo standard of care surgery.

    Biological: VX15/2503 · Biological: Ipilimumab

  • Experimental
    Group C (VX15/2503, nivolumab)

    Patients receive VX15/2503 IV over 60 minutes and nivolumab IV over 60 minutes on day 1. Beginning days 17-36, patients undergo standard of care surgery.

    Biological: VX15/2503 · Biological: Nivolumab

  • Experimental
    Group D (nivolumab)

    Patients receive nivolumab IV over 60 minutes on day 1. Beginning days 17-36, patients undergo standard of care surgery.

    Biological: Nivolumab

  • Experimental
    Group E (ipilimumab)

    Patients receive ipilimumab IV over 90 minutes on day 1. Beginning days 17-36, patients undergo standard of care surgery.

    Biological: Ipilimumab

  • No intervention
    Group F (no treatment)

    Patients undergo standard of care surgery.

Interventions

  • BiologicalVX15/2503

    Given IV

    Also known as: moAb VX15/2503, Anti-SEMA4D Monoclonal Antibody VX15/2503, Pepinemab

  • BiologicalIpilimumab

    Given IV

    Also known as: BMS-734016, MDX-010, MDX-CTLA4, Yervoy

  • BiologicalNivolumab

    Given IV

    Also known as: BMS-936558, MDX-1106, NIVO, ONO-4538, Opdivo

06

What researchers measure

Primary outcomes

  1. Change in immune profile in the tumor microenvironment

    Specimens from surgical resection will be collected under the guidance of the collaborating pathologist and tissue procurement staff at the time of surgery to capture tissue in excess of that needed for clinical staging and diagnostic purposes. Tumor specimens will be fixed in 10% formalin, embedded in paraffin and biomarkers related to activated HNSCC stroma will be assessed via immunohistochemical analysis.

    Time frame: Baseline up to 4-8 weeks after surgery

  2. Change in circulating percentage of immune suppressor subsets in peripheral blood

    Blood samples will be collected and peripheral blood mononuclear cells will be isolated from these samples and stored in -80°C freezers until analysis. Multi-parameter flow cytometry will be utilized to phenotype immune effector cells. The impact of treatment on the circulating percentage of immune suppressor subsets that may serve as predictors of response to immune checkpoint inhibition. All data will be expressed as the percentage of total circulating peripheral blood cells with each respective phenotype.

    Time frame: Baseline up to 4-8 weeks after surgery

  3. Phenotypic shifts in T lymphocyte subsets in peripheral blood

    Blood samples will be collected and peripheral blood mononuclear cells will be isolated from these samples and stored in -80°C freezers until analysis. Blood will be analyzed by multi-parameter flow cytometry to identify systemic phenotypic shifts mediated by VX15/2503 in combination with immune checkpoint inhibition.

    Time frame: Baseline up to 4-8 weeks after surgery

Secondary outcomes

  1. Incidence of adverse events assessed by National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) version 4.0

    Adverse events will be classified using MedDRA System Organ Classes and Preferred Terms. Furthermore, serious adverse events, adverse events (AEs) with a severity grade of 3 or above using NCI CTCAE version 4.0, AEs deemed related to study drug, AEs leading to discontinuation of study drug, and AEs leading to death will also be summarized in preferred term by system organ class and listed on an individual subject basis.

    Time frame: Up to 4-8 weeks after surgery

07

Study locations

1 site
  • Emory University Hospital Midtown
    Atlanta, Georgia 30308, United States
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 16, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT03690986
Lead sponsor
Emory University
Collaborators
Vaccinex Inc.
Responsible party
Conor Steuer (Principal Investigator, Emory University) — Principal investigator
First posted
Oct 1, 2018
Start date
Nov 1, 2018
Primary completion
Apr 9, 2027 (estimated)
Completion
Nov 30, 2027 (estimated)
Last update
Jul 16, 2026

Study contacts

Conor Steuer, MD
principal investigator · Emory University

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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