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Updated: Jun 4, 2026

Mutagenesis and Analysis of Genetic Mutations in the GC-rich KISS1 Receptor Sequence Identified in Humans with Reproductive Disorders
Published on: September 4, 2011
Kit gene in endometrial carcinoma: an immunohistochemical and mutational analysis
Ingrid Vandenput1, Maria Debiec-Rychter, An Capoen
1Leuven Cancer Institute, Katholieke Universiteit Leuven, Belgium.
Objective:
: Because the outcome of recurrent disease of endometrial carcinoma is cumbersome, the development of target treatment strategies is critical. We evaluated KIT, a receptor tyrosine kinase, to determine a potential role for imatinib mesylate in the treatment of endometrial carcinoma.
Materials And Methods:
: Immunohistochemical analysis for KIT expression was performed on paraffin sections from 45 patients: 30 primary and 15 recurrent tumors. Fifteen primary cases were available for mutation analysis.
Results:
: Histopathological distribution of paraffin-embedded tissue was as follows: 30 type I and 15 type II endometrial carcinoma. Histopathological distribution of fresh-frozen tissue was as follows: 8 type I and 7 type II. Cases did not show KIT expression or mutations in mutational hotspot exons of KIT gene.
Conclusions:
: On the basis of the absence of KIT expression or mutations, endometrial carcinoma is unlikely to respond to imatinib mesylate.
Insights
This study investigated KIT expression in endometrial carcinoma, finding no KIT expression or mutations. Therefore, imatinib mesylate is unlikely to be an effective treatment for this cancer.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Recurrent endometrial carcinoma presents a significant clinical challenge.
- Targeted treatment strategies are crucial for improving patient outcomes.
- The receptor tyrosine kinase KIT is a potential therapeutic target.
Purpose of the Study:
- To evaluate KIT expression and mutations in endometrial carcinoma.
- To determine the potential efficacy of imatinib mesylate in treating endometrial carcinoma.
Main Methods:
- Immunohistochemical analysis of KIT expression in 45 endometrial carcinoma tissue samples (30 primary, 15 recurrent).
- Mutation analysis of KIT gene hotspot exons in 15 primary tumor samples.
Main Results:
- No KIT expression was detected in any of the analyzed endometrial carcinoma tissues.
- No mutations were found in the hotspot exons of the KIT gene.
- Histopathological analysis confirmed the presence of both Type I and Type II endometrial carcinoma subtypes.
Conclusions:
- The absence of KIT expression and mutations suggests that endometrial carcinoma is unlikely to respond to imatinib mesylate therapy.
- KIT-targeted therapy with imatinib mesylate is not a viable treatment option for endometrial carcinoma based on these findings.
- Further research into alternative targeted therapies for endometrial carcinoma is warranted.
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