Neuron Specific Enolase in Small Cell Lung Cancer
Author Information
Author(s): L.G.M. J0rgensen, F.R. Hirsch, B.G. Skov, K. 0sterlind, E.H. Cooper, L.I. Larsson
Primary Institution: The Finsen Institute, Rigshospitalet
Hypothesis
What is the relationship between serum neuron specific enolase (NSE) levels and the occurrence of NSE in small cell lung cancer (SCLC) tumor tissue?
Conclusion
Serum NSE levels are a more reliable prognostic factor in small cell lung cancer than the histological staining index of tumor tissue.
Supporting Evidence
- 82% of tumors were NSE positive.
- Serum NSE was found to be a significant prognostic factor.
- HSI did not show a significant relationship with survival.
- Serum NSE levels were higher in patients with extensive disease compared to limited disease.
Takeaway
This study looked at a special protein in lung cancer patients and found that the amount in their blood is more important for understanding their illness than the amount in their tumors.
Methodology
The study analyzed serum NSE levels and tumor tissue from 56 patients with small cell lung cancer over 18 months, using immunohistochemistry and statistical tests.
Potential Biases
The study was conducted by a single observer who was blinded to the serological results, reducing bias risks.
Limitations
Some patients had traumatised specimens which may have affected the results.
Participant Demographics
Patients included 34 with limited disease and 22 with extensive disease, with a median age of 60 for limited disease and 63 for extensive disease.
Statistical Information
P-Value
0.0005
Statistical Significance
p<0.05
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