Loss of PTEN Gene in Barrett's Oesophagus Cancer
Author Information
Author(s): Kulke M H, Odze R D, Thakore K S, Thomas G, Wang H, Loda M, Eng C
Primary Institution: Dana-Farber Cancer Institute and Harvard Medical School
Hypothesis
Is there a loss of heterozygosity at the PTEN gene locus in Barrett's oesophagus-associated adenocarcinomas?
Conclusion
Loss of heterozygosity at chromosome 10q23 is uncommon in Barrett's oesophagus-associated adenocarcinomas and does not correlate with PTEN mutations or clinical features.
Supporting Evidence
- The study screened 80 Barrett's oesophagus-associated adenocarcinomas for loss of heterozygosity.
- LOH at one or more loci was identified in 21% of cases.
- No mutations in PTEN were detected in the cases with LOH.
- The presence of LOH did not correlate with patient age or tumour stage.
Takeaway
The study looked at a type of cancer related to Barrett's oesophagus and found that a specific gene, PTEN, is not often lost or mutated in these cases.
Methodology
The study screened 80 adenocarcinomas for loss of heterozygosity at 10q23 using microsatellite markers.
Limitations
The study did not find a correlation between LOH and various clinical features.
Digital Object Identifier (DOI)
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