Flow cytometry and interactive image cytometry in endometrial carcinoma. A comparative and prognostic study

Area of Science:

• Oncology
• Biotechnology
• Genetics

Background:

• Endometrial carcinoma is a common gynecologic malignancy.
• Accurate prognostic markers are crucial for guiding treatment decisions.
• DNA content analysis offers potential insights into tumor behavior.

Purpose of the Study:

• To compare DNA ploidy level measurements between flow cytometry (FCM) and interactive image cytometry (ICM) in endometrial carcinoma.
• To evaluate the prognostic value of DNA ploidy, S-phase fraction, and DNA content exceeding 5c in predicting recurrence or residual disease.

Main Methods:

• Comparative DNA measurements using FCM and ICM in 139 women with endometrial carcinoma.
• Analysis of ploidy level, S-phase cell percentage (FCM), and DNA content exceeding 2.5c, 3c, 4c, and 5c (ICM).
• Univariate and multivariate (Cox) analyses incorporating clinical variables to assess prognostic significance.

Main Results:

• An 85% agreement in ploidy level between FCM and ICM was observed; 15% showed discrepancies.
• Ploidy level (both methods) and S-phase rate (FCM) correlated with histopathologic grade.
• Ploidy level (FCM and ICM) and S-phase fraction (FCM) demonstrated prognostic value in univariate and multivariate analyses.
• Proportion of cells with DNA content >5c provided independent prognostic information beyond FCM ploidy and S-phase fraction.

Conclusions:

• FCM and ICM are comparable for DNA ploidy assessment in endometrial carcinoma, though discrepancies exist.
• DNA ploidy and S-phase fraction measured by FCM are significant independent prognostic factors.
• Measurement of cells with DNA content exceeding 5c offers additional prognostic value beyond standard FCM parameters for endometrial cancer.