Table 5.
Top 20 keywords on research of immunotherapy for head and neck squamous cell carcinoma.
| Rank | Keywords | Number | Rank | Keywords | Number |
|---|---|---|---|---|---|
| 1 | Head and neck squamous cell carcinoma | 687 | 11 | Chemotherapy | 50 |
| 2 | Immunotherapy | 506 | 12 | Oral squamous cell carcinoma | 50 |
| 3 | Immune checkpoint inhibitors | 104 | 13 | Tumor microenvironment | 49 |
| 4 | Human papillomavirus | 99 | 14 | Immune checkpoints | 35 |
| 5 | PD-L1 | 86 | 15 | Cancer | 35 |
| 6 | PD-1 | 74 | 16 | Head and neck | 34 |
| 7 | Prognosis | 65 | 17 | Cytokines | 31 |
| 8 | Radiotherapy | 56 | 18 | Cetuximab | 30 |
| 9 | Biomarkers | 55 | 19 | Pembrolizumab | 30 |
| 10 | Nivolumab | 51 | 20 | Clinical trials | 27 |
PD-L1: programmed cell death-ligand 1, PD1: programmed cell death protein 1.