Urine Proteomics for Colon Cancer Detection
Author Information
Author(s): Ward Douglas G, Nyangoma Stephen, Joy Howard, Hamilton Emma, Wei Wenbin, Tselepis Chris, Steven Neil, Wakelam Michael JO, Johnson Philip J, Ismail Tariq, Martin Ashley
Primary Institution: Cancer Research UK Institute for Cancer Studies, University of Birmingham
Hypothesis
Proteomic changes associated with colorectal cancer can be detected in urine.
Conclusion
Changes in the urine proteome may aid in the early detection of colorectal cancer.
Supporting Evidence
- The study identified 19 peaks in urine that differed significantly between cancer and non-cancer patients.
- Logistic regression classifiers achieved up to 78% sensitivity and 87% specificity for detecting colorectal cancer.
- Three discriminatory peaks were independently quantified using synthetic stable isotope peptides.
Takeaway
Scientists looked at urine to find signs of colon cancer. They found some changes that could help doctors catch the disease early.
Methodology
Urine samples from 67 colorectal cancer patients and 72 non-cancer controls were analyzed using MALDI and SELDI mass spectrometry.
Potential Biases
Potential biases due to sample collection and processing methods.
Limitations
The study excluded individuals below 40 or above 90 years old and those with abnormal protein concentrations.
Participant Demographics
Mean age of cancer patients was 74.2 years, and 45 were male; non-cancer controls had a mean age of 66.3 years with equal gender distribution.
Statistical Information
P-Value
0.0001
Confidence Interval
95% confidence intervals provided for sensitivity and specificity.
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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