Evidence map›Paper›PMID 20955586›Full record

ArticleBMC genomics2010

Genome wide analysis of DNA copy number neutral loss of heterozygosity (CNNLOH) and its relation to gene expression in esophageal squamous cell carcinoma.

Nan Hu, Robert J Clifford, Howard H Yang, Chaoyu Wang, Alisa M Goldstein, Ti Ding, Philip R Taylor, Maxwell P Lee

Open access · goldAbstract read
In one paragraph

Article in BMC genomics, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 120 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
120citing papers in PubMed, 4 pooled it
2.2field-weighted citation impact, top 13% 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

120 citing papers in PubMed, 4 syntheses or guidelines pooled it, 173 citations in OpenAlex.

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60 more citing papers are in PubMed but not listed here.

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

8 authors at 5 institutions in 2 countries.

Nan HuGenetic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, Bethesda, Maryland, USA.
Robert J Clifford
Howard H Yang
Chaoyu Wang
Alisa M Goldstein
Ti Ding
Philip R Taylor
Maxwell P Lee
United States Department of Health and Human Services · USDivision of Cancer Epidemiology and GeneticsCenter for Cancer Research · USNational Cancer Institute · USShanxi Provincial Cancer Hospital · CN

Funding

Upper Gastrointestinal Cancer StudiesZIACP000185 · NCI · DIVISION OF CANCER EPIDEMIOLOGY AND GENETICS · PI ABNET, CHRISTIAN · 2009 to 2025
$25.6M
Genetics and Epigenetics of CancerZIABC011253 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI LEE, MAXWELL · 2010 to 2012
$2.4M
Informatics Solutions to Biomedical ResearchZIABC011250 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI LEE, MAXWELL · 2010 to 2012
$236k
STRUCTURE AND STABILIZATION OF THE BACTERIAL NUCLEOIDZ01DK036120 · NIDDK · DIABETES, DIGESTIVE, KIDNEY DISEASES · PI ZIMMERMAN, STEVEN C. · 1998 to 2005
–
Intramural NIH HHS
6 · The paper itself

Abstract

backgroundGenomic instability plays an important role in human cancers. We previously characterized genomic instability in esophageal squamous cell carcinomas (ESCC) in terms of loss of heterozygosity (LOH) and copy number (CN) changes in tumors using the Affymetrix GeneChip Human Mapping 500K array in 30 cases from a high-risk region of China. In the current study we focused on copy number neutral (CN = 2) LOH (CNNLOH) and its relation to gene expression in ESCC.

resultsOverall we found that 70% of all LOH observed was CNNLOH. Ninety percent of ESCCs showed CNNLOH (median frequency in cases = 60%) and this was the most common type of LOH in two-thirds of cases. CNNLOH occurred on all 39 autosomal chromosome arms, with highest frequencies on 19p (100%), 5p (96%), 2p (95%), and 20q (95%). In contrast, LOH with CN loss represented 19% of all LOH, occurred in just half of ESCCs (median frequency in cases = 0%), and was most frequent on 3p (56%), 5q (47%), and 21q (41%). LOH with CN gain was 11% of all LOH, occurred in 93% of ESCCs (median frequency in cases = 13%), and was most common on 20p (82%), 8q (74%), and 3q (42%). To examine the effect of genomic instability on gene expression, we evaluated RNA profiles from 17 pairs of matched normal and tumor samples (a subset of the 30 ESCCs) using Affymetrix U133A 2.0 arrays. In CN neutral regions, expression of 168 genes (containing 1976 SNPs) differed significantly in tumors with LOH versus tumors without LOH, including 101 genes that were up-regulated and 67 that were down-regulated.

conclusionOur results indicate that CNNLOH has a profound impact on gene expression in ESCC, which in turn may affect tumor development.

Indexed as

Gene Expression Regulation, NeoplasticCarcinoma, Squamous CellChromosomes, Human, Pair 3DNA Copy Number VariationsDNA, NeoplasmEsophageal NeoplasmsGenome, HumanHumansLoss of HeterozygosityOligonucleotide Array Sequence AnalysisPolymorphism, Single NucleotideDNA, Neoplasm

Identifiers

PMID20955586
PMCPMC3091724
OpenAlexW2082353425

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.