NIH-funded research NIH-funded research

Blocking EphB4–ephrinB2 to lower immune suppression in head and neck cancer

Official title: Targeting EphB4-ephrinB2 to decrease immunosuppression in HNSCC

Funded at University of Colorado Denver · NIH-11180119 · Data updated 2026-11-12

This project tests whether blocking the EphB4–ephrinB2 pathway can reduce immune-suppressing cells in people with head and neck cancer to help radiation and immunotherapy work better.

More Immunosuppression research and trials

Quick facts

Grant typeNIH-funded research
Study typeNIH-funded research
Funding institutionUniversity of Colorado Denver
NIH-funded
Lab location1 site (Aurora, UNITED STATES)
Project startSeptember 1, 2021
Project endAugust 31, 2026
Funding year2025
Award (this year)$343,092
NIH project number5P50CA261605-05
Project IDNIH-11180119 on NIH RePORTER

Who could benefit from this research

Could help

Ideal candidates are people with high-risk or treatment-resistant head and neck squamous cell carcinoma, especially those receiving or planned for radiation and/or immunotherapy.

Less likely to help

People without head and neck cancer or patients whose tumors do not rely on EphB4/EFNB2 signaling likely would not benefit from this approach.

What this research studies

From a patient perspective, researchers are studying a molecule pair (EphB4 on immune cells and EFNB2 on tumor blood vessels) that may let suppressive immune cells enter and protect head and neck tumors. They will use laboratory and preclinical work, plus tumor samples, to see how radiation changes EFNB2 on blood vessels and how blocking this pathway affects regulatory T cells and tumor-associated macrophages. The team will test a blocking agent (TNYL-RAW) and genetic approaches in models and human-derived specimens to see if the tumor environment becomes less suppressive. The goal is to find ways to make radiation and immune-based treatments work better for patients whose tumors resist therapy.

Why it matters

Potential benefit: If successful, this work could make radiation and immunotherapy more effective by reducing immune-suppressing cells in head and neck tumors.

How similar studies have gone: Targeting EphB4–EFNB2 in cancer immunity is relatively new: there are supportive laboratory findings but limited prior clinical evidence in patients.

Where this research is happening

  • University of Colorado Denver
    Aurora, United States
    Active

Researchers

  • Principal investigator: Karam, Sana D — University of Colorado Denver
  • Study coordinator: Karam, Sana D

Related research

Other NIH-funded projects on the same topics.

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.