Correcting Labelling Indices in Human Tumours
Author Information
Author(s): Bergström C, Begg A, Palmqvist R, Waites A, Denekamp J
Primary Institution: Umeå University
Hypothesis
Should corrections be applied to labelling indices in human tumours?
Conclusion
Applying mathematical corrections to labelling indices can significantly increase the observed values, suggesting that many published indices may underestimate true values.
Supporting Evidence
- The correction factor for labelling indices can lead to a 30% increase in median values.
- G2 phase duration is critical for determining correction factors.
- Flow cytometric data suggests G2+M may be shorter than previously thought for certain tumours.
Takeaway
When doctors check how fast cancer cells are growing, they might need to adjust their measurements to get a more accurate picture.
Methodology
The study used flow cytometry to measure labelled cells and their movement through the S phase, and provided a nomogram for correction factors.
Potential Biases
Potential bias in published labelling indices due to inadequate correction methods.
Limitations
The study primarily focuses on specific tumour types and may not generalize to all cancers.
Digital Object Identifier (DOI)
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