Poor outcome in HIF-2α- and CA9-positive colorectal cancer
Author Information
Author(s): Cleven A H G, Wouters B G, Schutte B, Spiertz A J G, van Engeland M, de Bruïne A P
Primary Institution: University Hospital Maastricht
Hypothesis
The study investigates the correlation between stromal expression of HIF-2α and CA9 and patient outcomes in colorectal cancer, considering the role of TP53 mutations and BNIP3 promoter hypermethylation.
Conclusion
The presence of wild-type TP53 in colorectal cancer cells is associated with poorer survival in patients with HIF-2α and CA9-positive tumors.
Supporting Evidence
- Stromal expression of HIF-2α and CA9 is correlated with poorer prognosis in colorectal cancer.
- Wild-type TP53 tumors show poorer survival when expressing HIF-2α and CA9.
- BNIP3 promoter hypermethylation did not correlate with poor outcomes.
Takeaway
If a tumor has certain markers (HIF-2α and CA9) in its surrounding tissue, it might mean a worse outcome for the patient, especially if the tumor cells have a normal TP53 gene.
Methodology
The study analyzed TP53 mutations, BNIP3 promoter hypermethylation, and the expression of HIF-2α and CA9 in tumor tissues from 195 colorectal cancer patients.
Limitations
The study only included patients who did not undergo preoperative radiotherapy, which may limit the generalizability of the findings.
Participant Demographics
Patients were registered for two multicenter prospective clinical trials in The Netherlands between 1979 and 1981, with a representative distribution of age, gender, and tumor characteristics.
Statistical Information
P-Value
P=0.001 and P=0.0391
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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