The Study
Analysis of K-ras gene mutations in human pancreatic cancer cell lines and in bile samples from patients with pancreatic and biliary cancers.
This study looked at whether a specific gene change is common in people with pancreatic cancer and in their bile. It found that the gene change often shows up in cancer samples, but it doesn't prove that the gene change caused the cancer—it could just be along for the ride.
Analysis score
Maximum 44 for a cross-sectional study.
Where the score came from
Scientists checked a tiny part of a gene called K-ras in cancer cells and in fluid from the bile duct to see if it was broken in a way that causes cancer.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 534 / 100
Quality score
Snapshots of a population at a single point in time, or descriptions of small groups. Can identify correlations and prevalence, but cannot determine cause and effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes — finding this broken gene in bile might help spot pancreatic cancer earlier, even when other tests are unclear.
- 2In cancer cell lines, 77% had the broken gene (10 out of 13).
- 3In bile fluid, 50% had it (9 out of 18), even in some samples where doctors couldn't see cancer under the microscope.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Oncology reports
Year
1997
Authors
T. Evans, M. Faircloth, A. Deery, V. Thomas, A. Turner, A. Dalgleish
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Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.