Evidence map›Paper›PMID 40011911›Full record

SynthesisBMC cancer2025

Tissue-resident memory T-cell expressions and their prognostic role in head and neck squamous cell carcinoma: a systematic review and meta-analysis.

Anwar Ali, Muhammad Furqan Bari, Saba Arshad, Mohsin Wahid, Jawad Safdar, Khadija Anwar, Waqas Ahmed Farooqui

Abstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in BMC cancer, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
  3. Article
  4. Review
  5. Review
  6. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Anwar AliDepartment of Oral and Maxillofacial Surgery, Dr. Ishrat-Ul-Ebad Khan Institute of Oral Health Sciences, Dow University of Health Sciences, Karachi, Pakistan. anwar.ali@duhs.edu.pk.
Muhammad Furqan BariDepartment of Pathology, Dr. Ishrat-Ul-Ebad Khan Institute of Oral Health Sciences, Dow University of Health Sciences, Karachi, Pakistan.
Saba ArshadDepartment of Oral Biology, Dr. Ishrat-Ul-Ebad, Khan Institute of Oral Health Sciences, Dow University of Health Sciences, Karachi, Pakistan. saba.arshad@duhs.edu.pk.
Mohsin WahidDepartment of Pathology, Dow International Medical College, Dow Research Institute of Biotechnology and Biomedical Sciences, Dow University of Health Sciences, Karachi, Pakistan.
Jawad SafdarDepartment of Oral and Maxillofacial Surgery, Dow Dental College, Dow University of Health Sciences, Karachi, Pakistan.
Khadija AnwarDow International Medical College, Dow University of Health Sciences, Karachi, Pakistan.
Waqas Ahmed FarooquiDepartment of Research, School of Public Health, Dow University of Health Sciences Karachi, Karachi, Pakistan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCD8 + tissue-resident memory T lymphocytes (TRM) are a subset of tumor-infiltrating lymphocytes (TILs) that mediate innate immunity. Clinically, they can prevent tumor development, growth and metastasis and play a potential role in immunosurveillance and long-term immunity in head and neck squamous cell carcinoma (HNSCC). This systematic review and meta-analysis aimed to assess the prognostic significance of CD8 + TRM cells, identified by key immunophenotypic markers CD103, CD69, and CD49a linked to patient outcomes such as overall survival (OS) in HNSCC and its specified subcategory, OSCC.

methodsPubMed, Scopus, and Web of Science databases were searched systematically to include original research articles comprising cross-sectional, observational, experimental studies, and clinical trials. The characteristics of the studies were recorded for years of publication, research design, cancer types, HPV status, staging, diagnostic assays, immunophenotypic markers, and immune response regulators. Hazard ratios (HR) with confidence intervals (CI) and p-values were extracted for observing the association between CD103, CD69, and/or CD49a exhibiting CD8 + cytotoxic T lymphocytes with tissue-resident memory potential. The proportion of CD8 + TRM cells co-expressing CD103, CD69, and/or CD49a was estimated by extracting the actual percentage of expression in TME from graphical presentation of data in included studies.

resultsAmong the 276 studies, 11 studies were included by reviewing the abstract or title and full-text articles. The findings of these studies demonstrated a strong association between CD8 + TRM cells, characterized by the expression of CD103, CD69, or CD49a and improved OS in patients with HNSCC, and its subtype, OSCC. Notably, similar trends were observed within the included studies relative to oropharyngeal squamous cell carcinomas (OPSCC), another recognized subtype of HNSCC. The pooled HR was 0.49 (95% CI: 0.23-1.02, p < 0.001), indicating a potential prognostic benefit of CD8 + TRM cell infiltration in HNSCC and related subtypes of OSCC and OPSCC. However, the overall pooled findings at aggregate cancer incidences were not statistically significant (p > 0.05).

conclusionIncreased infiltration of CD8 + TRM cells expressing CD103, CD69, and/or CD49a is associated with better prognosis and OS in HNSCC and its subtype, OSCC.

trial registrationThis systematic review and meta-analysis were registered in the international database of systematic review protocols at https://www.crd.york.ac.uk/prospero/ under protocol identifier: CRD42024570177.

Indexed as

CD8-Positive T-LymphocytesHead and Neck NeoplasmsImmunologic MemoryLymphocytes, Tumor-InfiltratingMemory T CellsSquamous Cell Carcinoma of Head and NeckAntigens, CDHumansPrognosisAntigens, CDCD8Head and neck cancer squamous cell carcinomaMeta-analysisOral cancerOral squamous cell carcinomaSystematic reviewTissue resident memoryT lymphocytesTRM

Identifiers

PMID40011911
PMCPMC11863602

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.