Abstract 1388
Background
Human papilloma virus (HPV)-associated oropharyngeal cancer (OPC) is a special entity among head and neck squamous cell carcinomas (HNSCCs) characterised by higher survival rates compared to similar stage HPV-negative OPC. Due to favorable prognosis, a significant interest in ‘’less toxic’’ therapies (de-escalating strategies) in the treatment of HPV-associated OPC had been introduced. One of the approaches included introduction of cetuximab (C225) instead of cisplatin (CDDP) in conjunction with radiotherapy as a definitive treatment option in these patients. The aim of the updated meta-analysis was to compare the efficacy of CDDP vs. C225 given concurrently with radiotherapy as definitive treatment of HPV-associated OPC, with inclusion of the latest trials investigating this specific issue. To our knowledge this is currently the largest investigation on this matter.
Methods
A systematic literature search was performed for studies published between 2006 and 2018. A total of 1490 citations were obtained and 8 studies met inclusion criteria, resulting in inclusion of 1665 patients in this meta-analysis.
Results
Analysis of pooled studies showed no significant heterogeneity or publication bias. Two-year overall survival (OS) calculated pooled odds ratio (OR) for CDDP-based chemoradiotherapy vs. C225-based bioradiotherapy, was 0.45 (P < 0.0001). Two-year locoregional recurrence (LRR) calculated pooled OR for CDDP-based chemoradiotherapy vs. C225-based bioradiotherapy was 0.35 (P < 0.0001). Patients receiving CDDP concurrently with radiotherapy had 2.2- and 2.9-fold decreased risk for death from any cause and LRR, respectively.
Conclusions
According to the evidence demonstrated by our meta-analysis, CDDP-based chemoradiotherapy should remain the standard of definitive treatment of HPV-associated OPC. Further investigations are necessary in order to define optimal treatment in HPV-negative HNSCCs.
Clinical trial identification
Editorial acknowledgement
Legal entity responsible for the study
Petar Suton.
Funding
Has not received any funding.
Disclosure
All authors have declared no conflicts of interest.
Resources from the same session
3628 - Predictive model for survival in advanced non-small-cell lung cancer (NSCLC) treated with frontline pembrolizumab
Presenter: Xabier Mielgo Rubio
Session: Poster Display session 3
Resources:
Abstract
5705 - External validation and longitudinal extension of the LIPI (Lung Immune Prognostic Index) for immunotherapy outcomes in advanced non-small cell lung cancer.
Presenter: Jakob Riedl
Session: Poster Display session 3
Resources:
Abstract
5758 - Changes of TCR Repertoire in Metastatic Renal Cell Carcinoma and Metastatic Melanoma Patients Treated with Nivolumab
Presenter: Martin Klabusay
Session: Poster Display session 3
Resources:
Abstract
1743 - Expression of MHC class I, HLA-A and HLA-B identifies immune activated breast tumors with favorable outcome
Presenter: María Del Mar Noblejas López
Session: Poster Display session 3
Resources:
Abstract
2219 - Prognostic Significance of Tumor Tissue NeuGcGM3 Ganglioside Expression and Predictive Value of Circulating Tumor Cell Count Monitoring in Patients Receiving Racotumomab Immunotherapy
Presenter: Necdet Üskent
Session: Poster Display session 3
Resources:
Abstract
2996 - Evolution of Myeloid-Derived Suppressor Cells and Objective Response Rate in Relapsed/Refractory Diffuse Large B Cell Lymphoma (R/R DLBCL) patients after receiving immunotherapy
Presenter: Carlos Jiménez Cortegana
Session: Poster Display session 3
Resources:
Abstract
2110 - A Phase Ia/Ib trial of the anti-programmed death-ligand 1 (PD-L1) human monoclonal antibody (mAb), CS1001, in patients (pts) with advanced solid tumors or lymphomas
Presenter: Lin Shen
Session: Poster Display session 3
Resources:
Abstract
3515 - Results from a randomised Phase 1/2 trial evaluating the safety and antitumour activity of anti-PD-1 (MEDI0680)/anti-PD-L1 (durvalumab) vs anti-PD-1 (nivolumab) alone in metastatic clear cell renal cell carcinoma (ccRCC)
Presenter: Martin Voss
Session: Poster Display session 3
Resources:
Abstract
3566 - Pembrolizumab in Advanced Rare Cancers
Presenter: Aung Naing
Session: Poster Display session 3
Resources:
Abstract
3567 - High clinical benefit rates of pembrolizumab in very rare sarcoma histotypes: first results of the AcSé Pembrolizumab study
Presenter: Jean-Yves Blay
Session: Poster Display session 3
Resources:
Abstract