Abstract 3407
Background
Few studies have directly investigated the differential expression of miRNA between low-tobacco and high-tobacco exposed HNSCC. The purpose of this study is to screen the differentially expressed miRNA and to investigate the clinical significance and potential biological mechanisms in above two groups of HNSCC.
Methods
The HNSCC datasets were obtained from TCGA database. Meanwhile, we collected 22 HNSCC patients in our hospital. The differentially expressed miRNAs between low-tobacco and high-tobacco exposed HNSCC were identified based on log2FC > 1 and FDR < 0.05. KM survival analysis, Cox regression, chi-square test were used to evaluate the clinical significance of miRNA. The correlation between gene and clinical characteristic was analyzed by WGCNA. TargetScan, miRDB, DIANA databases were used to predict the target genes of miRNA. RT-qPCR was used to identify miRNA expression in HNSCC tissues. p < 0.05 was considered statistically significant.
Results
30 differentially expressed miRNAs were identified between low-tobacco and high-tobacco exposed HNSCC. The patients with high expression of miR-499a had lower overall survival than those with low expression of miR-499a in high-tobacco exposed HNSCC (p = 0.02). Multivariate Cox regression showed that high expression of miR-499a was an independent risk factor for prognosis of high-tobacco exposed HNSCC (HR = 3.26, p = 0.03). Chi-square test showed that miR-499a was related to N stage in high-tobacco exposed HNSCC (p < 0.01). The clinical significance of miR-499a was not found in low-tobacco exposed HNSCC. WGCNA identified genes associated with N stage in high-tobacco exposed HNSCC. The three databases predicted the target genes of miR-499a, which intersected the genes associated with N stage. ZNRF1, AEBP2, NUS1 were obtained. RT-qPCR showed that miR-499a was differentially expressed between low-tobacco and high-tobacco exposed HNSCC in our own patients.
Conclusions
30 differentially expressed miRNAs are identified between low-tobacco and high-tobacco exposed HNSCC. In high-tobacco exposed HNSCC, highly expressed miR-499a may promote lymph node metastasis by down-regulating one or more of ZNRF1, AEBP2, NUS1, resulting in shortened patient survival.
Clinical trial identification
Editorial acknowledgement
Legal entity responsible for the study
The authors.
Funding
Has not received any funding.
Disclosure
All authors have declared no conflicts of interest.
Resources from the same session
3517 - Role of follow-up (FU) FDG-PET/CT (FU-FDG-PET/CT) in patients with locoregionally advanced squamous cell carcinoma of the head and neck (LA-HNSCC) treated with chemotherapy and radiotherapy (RT), either concurrent (CRT) or sequential (ST).
Presenter: Bert Van Den Heuvel
Session: Poster Display session 3
Resources:
Abstract
5071 - Expression of estrogen receptor and programmed cell death-ligand 1 can be complementary prognostic factors in HPV-positive oropharyngeal squamous cell carcinoma
Presenter: Soohyeon Kwon
Session: Poster Display session 3
Resources:
Abstract
5306 - Real-world data of clinicopathologic characteristics of young oropharyngeal cancer patients.
Presenter: Maria Nieva
Session: Poster Display session 3
Resources:
Abstract
3310 - Liquid biopsy for mutational profiling of locoregional recurrent and/or metastatic squamous cell carcinoma of the head and neck
Presenter: Rachel Galot
Session: Poster Display session 3
Resources:
Abstract
2362 - Blood-based testing of mutations in patients with Head and neck squamous cell carcinoma (HNSCC) using highly sensitive SafeSEQ technology
Presenter: Florentia Fostira
Session: Poster Display session 3
Resources:
Abstract
4533 - The head and neck Lung Immune Prognostic Index (HN-LIPI): a prognostic Score for Immune Checkpoint Inhibitors (ICI) in Recurrent or Metastatic Squamous Cell Carcinoma of the Head and Neck (R/M SCCHN) patients.
Presenter: Ruth Gabriela Herrera Gomez
Session: Poster Display session 3
Resources:
Abstract
5262 - Immune-related adverse events (irAEs) and outcome in recurrent/metastatic (R/M) Head and Neck Squamous Cell Carcinoma (HNSCC) patients (pts) treated by immune-checkpoints inhibitors (ICI)
Presenter: Neus Baste Rotllan
Session: Poster Display session 3
Resources:
Abstract
3725 - Intratumoral and peripheral exploratory biomarker analysis in patients with locoregional, recurrent head and neck squamous cell carcinoma (rHNSCC) treated with RM-1929 photoimmunotherapy
Presenter: Jack Bui
Session: Poster Display session 3
Resources:
Abstract
2533 - A nomogram based prognostic score to predict overall survival (OS) in recurrent-metastatic (R/M) head and neck squamous cell carcinoma (HNSCC) patients (pts) treated with immune checkpoint inhibitors (ICI).
Presenter: Luay Mousa
Session: Poster Display session 3
Resources:
Abstract
2929 - Changes of the Commensal Microbiome during Treatment are Associated with Clinical Response in the Nasopharyngeal Carcinoma Patients
Presenter: Tingting Huang
Session: Poster Display session 3
Resources:
Abstract