ArticleHead & neck2025
Differences in PD-L1, PD-L2, and EGFR Expression Between Naive and Recurrent Tumors in Patients With Head and Neck Squamous Cell Carcinoma: A Retrospective Study.
Article in Head & neck, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Peptide-Reactive T-cell Response as a Novel Biomarker in Patients with Head and Neck Cancer Treated with Anti-PD-1 Antibody.Cancer research communications · 2026Article
- Review
- Expression of PD-L1, TIGIT, and CD155, and Human Papillomavirus Status in Patients with Advanced Penile Cancer.European urology open science · 2025Article
- Differences in PD-L1, PD-L2, and EGFR Expression Between Naive and Recurrent Tumors in Patients With Head and Neck Squamous Cell Carcinoma: A Retrospective Study.Head & neck · 2025Article
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Authors and funding
14 authors.
Funding
Abstract
backgroundThe efficacy of anti-PD-1 and EGFR therapies for head and neck squamous cell carcinoma (HNSCC) can be predicted using various markers; however, the stability of these markers remains unclear.
methodsIn this retrospective study, laboratory findings and tissue expression of PD-L1, PD-L2, and EGFR were analyzed in 79 paired naive and recurrent HNSCC tumors. Laboratory findings were also analyzed in nonrecurrent patients using a propensity score-matched analysis. PD-L1 and PD-L2 expression levels were assessed using tumor proportion score (TPS) and combined positive score (CPS), whereas EGFR was evaluated using the H-score.
resultsWhite blood cell, neutrophil, lymphocyte, and monocyte counts and lymphocyte-monocyte ratios were significantly lower in the patients after the first-line treatment regardless of recurrence. PD-L1, PD-L2, and EGFR expression changed in 30%-40% of tumor pairs. Immune but not tumoral PD-L1 positivity rates were significantly higher in the patients with early recurrence.
conclusionsThe expression of immune checkpoints including PD-L1 in naive tumors does not reflect those in recurrent tumors. Increasing PD-L1 expression in immune cells may cause early recurrence of HNSCC.
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