p16 Mutations in Barrett's Esophagus
Author Information
Author(s): Paulson Thomas G., Galipeau Patricia C., Xu Lianjun, Kissel Heather D., Li Xiaohong, Blount Patricia L., Sanchez Carissa A., Odze Robert D., Reid Brian J.
Primary Institution: Fred Hutchinson Cancer Research Center
Hypothesis
What is the frequency and spectrum of p16 mutations in Barrett's esophagus, a premalignant condition?
Conclusion
The study suggests that the environment of the esophagus in Barrett's esophagus patients can generate and select for clones with p16 mutations.
Supporting Evidence
- Forty-seven mutations were detected in 44 Barrett's esophagus patients (14.5%).
- The percentage of patients with p16 mutations increased with increasing histologic grade.
- Three out of 19 patients who underwent esophagectomy had p16 mutations.
Takeaway
This study looked at patients with Barrett's esophagus and found that some had mutations in a gene called p16, which might help us understand how this condition can lead to cancer.
Methodology
The study involved sequencing p16 exon 2 in biopsies from 304 patients with Barrett's esophagus to determine mutation frequency.
Potential Biases
The cohort was from a specialty research center, which may not represent the general population of Barrett's esophagus patients.
Limitations
The study only examined a single biopsy every 2 cm from each patient's Barrett's segment, which may underestimate the true mutation frequency.
Participant Demographics
Of the 304 patients, 235 were male (77%) and 69 were female (23%), with a mean age of 62.7 years.
Statistical Information
P-Value
0.009
Statistical Significance
p=0.009
Digital Object Identifier (DOI)
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