Evidence map›Paper›PMID 25846277›Full record

ArticleClinical oral investigations2015

Downregulation of CRNN gene and genomic instability at 1q21.3 in oral squamous cell carcinoma.

Iman Salahshourifar, Vui King Vincent-Chong, Hong-Yun Chang, Hooi Leng Ser, Anand Ramanathan, Thomas George Kallarakkal, Zainal Ariff Abdul Rahman, Siti Mazlipah Ismail, Narayanan Prepageran, Wan Mahadzir Wan Mustafa and 3 more

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Article in Clinical oral investigations, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
1.8field-weighted citation impact, top 16% of its field
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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.

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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

13 authors at 2 institutions in 1 country.

Iman SalahshourifarOral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.
Vui King Vincent-ChongOral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.
Hong-Yun ChangOral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.
Hooi Leng SerOral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.
Anand RamanathanOral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.
Thomas George KallarakkalOral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.
Zainal Ariff Abdul RahmanOral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.
Siti Mazlipah IsmailOral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.
Narayanan PrepageranOral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.
Wan Mahadzir Wan MustafaDepartment of Oral and Maxillofacial Surgery, Hospital Kuala Lumpur, Ministry of Health Malaysia, Kuala Lumpur, Malaysia.
Mannil Thomas AbrahamDepartment of Oral and Maxillofacial Surgery, Hospital Tengku Ampuan Rahimah, Ministry of Health Malaysia, Klang, Malaysia.
Keng Kiong TayDepartment of Oral Surgery, Hospital Umum Sarawak, Ministry of Health Malaysia, Kuching, Sarawak, Malaysia.
Rosnah Binti ZainOral Cancer Research and Coordinating Centre, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia. rosnahbz12@yahoo.com.
University of Malaya · MYMinistry of Health · MY

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesThis study includes the direct sequencing of cornulin (CRNN) gene to elucidate the possible mechanism of CRNN downregulation and explore the genetic imbalances at 1q21.3 across oral squamous cell carcinoma (OSCC) samples. MATERIALS AND

methodsIn mutation screening of CRNN gene, gDNA from OSCC tissues were extracted, amplified, and followed by direct sequencing. OSCC samples were also subjected to fragment analysis on CRNN gene to investigate its microsatellite instability (MSI) and loss of heterozygosity (LOH). Immunohistochemistry was performed to validate CRNN downregulation in OSCC samples.

resultsNo pathogenic mutation was found in CRNN gene, while high frequency of allelic imbalances was found at 1q21.3 region. MSI was found more frequent (25.3 %) than LOH (9.3 %). Approximately 22.6 % of cases had high MSI which reflects higher probability of inactivation of DNA mismatch repair genes. MSI showed significant association with no betel quid chewing (p = 0.003) and tongue subsite (p = 0.026). LOH was associated with ethnicity (p = 0.008) and advanced staging (p = 0.039). The LOH at 1q21.3 was identified to be as an independent prognostic marker in OSCC (HRR = 7.15 (95 % CI, 1.41-36.25), p = 0.018). Downregulation of CRNN was found among MSI-positive OSCCs and was associated with poor prognosis (p = 0.044).

conclusionThis study showed a significant correlation between LOH/MSI at 1q21.3 with clinical outcomes and that downregulation of CRNN gene could be considered as a prognostic marker of OSCC. CLINICAL RELEVANCE: Insights of the downregulation mode of CRNN gene lays the basis of drug development on this gene as well as revealing its prognostic value.

Indexed as

Genomic InstabilityCarcinoma, Squamous CellDown-RegulationHumansImmunohistochemistryLoss of HeterozygosityMalaysiaMembrane ProteinsMicrosatellite InstabilityMouth NeoplasmsNeoplasm ProteinsPolymerase Chain ReactionPrognosisCRNN protein, humanMembrane ProteinsNeoplasm Proteins1q23.1. LOH/MSICRNN geneGenetic instabilityOral squamous cell carcinoma

Identifiers

PMID25846277
OpenAlexW2121282421

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Registered trials

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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.