Immunotherapy improves efficacy and safety of patients with HPV positive and negative head and neck cancer: A systematic review and meta-analysis

Crit Rev Oncol Hematol. 2020 Jun:150:102966. doi: 10.1016/j.critrevonc.2020.102966. Epub 2020 Apr 22.

Abstract

Background: Despite multiple modalities used to management of head and neck squamous cell carcinoma (HNSCC), disease control remains unsatisfactory. Immunotherapy is emerging as a novel therapeutic approach. This systematic review assesses clinical data regarding immunotherapy efficacy and safety.

Methods: Data from 11 clinical trials testing immunotherapy in HNSCC were assessed. We performed the meta-analysis to correlate the overall survival (OS), response rate (RR), adverse effects, HPV status, and PD-L1 expression.

Results: Immunotherapy extended OS (hazard ratio = 0.77, p < 0.0001) and RR significantly (risk ratio = 1.41, p = 0.02). Patients with HPV-positive HNSCC exhibited a better RR (risk ratio = 1.29, p = 0.24) and OS (11.5 vs. 6.3 months). PD-L1 positive tumors showed a higher OS (9.9 vs. 6.5 months). Moreover, immunotherapy caused less adverse effects than standard therapy.

Conclusion: Our results indicate the benefit of immunotherapy for improving RR and OS of HNSCC patients. The benefit is higher in patients with HPV and PD-L1 positive tumors.

Keywords: Head and neck squamous cell carcinoma; Human papillomavirus; Immunotherapy; Meta-analysis; Programmed death-ligand 1; Toxicity.

Publication types

  • Meta-Analysis
  • Systematic Review

MeSH terms

  • Head and Neck Neoplasms / pathology
  • Head and Neck Neoplasms / therapy*
  • Head and Neck Neoplasms / virology
  • Humans
  • Immunohistochemistry
  • Immunologic Factors
  • Immunotherapy / methods*
  • Molecular Targeted Therapy
  • Papillomaviridae
  • Papillomavirus Infections / immunology
  • Papillomavirus Infections / therapy
  • Papillomavirus Infections / virology*
  • Squamous Cell Carcinoma of Head and Neck / pathology
  • Squamous Cell Carcinoma of Head and Neck / therapy*
  • Squamous Cell Carcinoma of Head and Neck / virology
  • Treatment Outcome

Substances

  • Immunologic Factors