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Immunomethylomic profiles of long-term head and neck squamous cell carcinoma survivors on immune checkpoint
Min Kyung Lee1, Ze Zhang1, Kartik Sehgal2
1Department of Epidemiology, Geisel School of Medicine at Dartmouth, Lebanon, NH 03755, USA.
Epigenomics
|June 13, 2024
View abstract on PubMed
Summary
Predicting immunotherapy response in head and neck squamous cell carcinoma (HNSCC) is challenging. Monitoring immune cell fluctuations, like CD8 T cells, may reveal biomarkers for treatment success in HNSCC patients.
Area of Science:
- Oncology
- Immunology
- Genomics
Background:
- Predicting immunotherapy response in head and neck squamous cell carcinoma (HNSCC) remains a significant clinical challenge.
- Identifying reliable biomarkers is crucial for optimizing treatment strategies and patient outcomes.
Purpose of the Study:
- To investigate the dynamic changes in immune cell profiles of HNSCC patients undergoing immunotherapy.
- To explore potential immune-based biomarkers for predicting treatment response in HNSCC.
Main Methods:
- DNA methylation cytometry was employed to analyze immune cell populations.
- Longitudinal immune profiling was conducted on six HNSCC patients with a positive immunotherapy response over one year.
Main Results:
- An initial surge in CD8 T memory cells and natural killer cells was observed during the first four immunotherapy cycles, returning to baseline after one year.
- HNSCC immunotherapy responders exhibited lower baseline CD8 T cell levels, which normalized post-treatment compared to healthy controls.
Conclusions:
- Dynamic monitoring of immune cell fluctuations, particularly CD8 T cells, may serve as a potential biomarker for immunotherapy response in HNSCC.
- These findings highlight the utility of immune profiling in understanding and predicting treatment efficacy in HNSCC.


