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Browse EPPT > UWI2016-08-01
Exemestane in Treating Patients With Complex Atypical Hyperplasia of the Endometrium/Endometrial Intraepithelial Neoplasia or Low Grade Endometrial Cancer

Results/Findings:

Thirty-eight participants had evaluable specimens for both pre- and post-treatment Ki-67 analysis. There was no tissue available for analysis for two participants. Median Ki-67 score decreased from 40.7% [IQR (33.9, 50.3)] at baseline to 18.1% [IQR (8.8, 31.8)] after exemestane treatment. This represents a median absolute change from baseline of -20.4% [IQR (-29.9, -6.7), P < 0.001]. In total, the percentage of Ki67 in tumor cells declined in 31 participants and increased in seven participants. There were no outstanding features identified for the participants in whom Ki-67 increased. Specifically, compliance with dosing, tumor grade, BMI, and ER/PR positivity in those with increased Ki-67 was similar to that of the entire cohort. Age and BMI were not associated with the change in Ki-67. Preoperative diagnosis was correlated with Ki-67 decrease, with greater decreases seen in participants with CAH/EIN and grade 1 tumors compared with grade 2 tumors (r = 0.38, P = 0.019).

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