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Updated: Sep 28, 2025
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Assessment of Global DNA Double-Strand End Resection using BrdU-DNA Labeling coupled with Cell Cycle Discrimination Imaging
Published on: April 28, 2021
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DNA image cytometry parameters to identify high-grade cervical lesions
Ane Francyne Costa1, Adriane Pogere2, Ana Paula Beltrame Farina Pasinato3
1Department of Clinical Analysis, Federal University of Santa Catarina, Florianópolis, Brazil.
Summary
This study evaluated DNA image cytometry (DNA-ICM) ploidy parameters for classifying results and identifying high-grade cervical intraepithelial neoplasia (≥ CIN2). Specific parameters like 1 cell with 9cEE and aneuploid stemlines are best for abnormal results, while others are suitable for suspicious findings.
Area of Science:
- Cytopathology
- Oncology
- Biomedical Engineering
Background:
- Cervical intraepithelial neoplasia (CIN) requires accurate detection for effective management.
- DNA image cytometry (DNA-ICM) offers a quantitative method for assessing cellular DNA content.
- Optimizing DNA-ICM parameters is crucial for improving diagnostic accuracy in cervical cancer screening.
Purpose of the Study:
- To evaluate the performance of various DNA-ICM ploidy parameters.
- To determine the optimal parameters for categorizing DNA-ICM results.
- To identify parameters effective in detecting high-grade cervical intraepithelial neoplasia (≥ CIN2).
Main Methods:
- Analysis of cervical samples from 232 women using DNA-ICM.
- Definition of DNA aneuploidy based on five parameters: exceeding events (EE) over 2.5cEE, 4cEE, 5cEE, 9cEE, and aneuploid stemlines.
- Categorization of DNA-ICM results into normal, suspicious, and abnormal, with biopsy confirmation.
Main Results:
- Individual parameters showed varying sensitivity and specificity; for example, 1 cell with 9cEE had 69.67% sensitivity and 89.09% specificity.
- The 5cEE parameter demonstrated high sensitivity (up to 93.44%) but lower specificity (up to 80.91%) with increasing cell counts.
- Suspicious DNA-ICM results had higher sensitivity (87.70%) but lower specificity (54.55%) compared to abnormal results (82.79% sensitivity, 75.45% specificity).
Conclusions:
- For prognostic purposes, parameters like 1 cell with 9cEE, 45 cells with 4cEE, and aneuploid stemlines are recommended for abnormal DNA-ICM results.
- For screening, 10 cells with 2.5cEE, 10 cells with 4cEE, and 2 cells with 5cEE are suitable for categorizing suspicious DNA-ICM results.
- The study highlights the importance of selecting appropriate DNA-ICM parameters based on the diagnostic or prognostic goal.
