Cited by 218Endometrial and Cervical Cancer TreatmentsPI3K/AKT/mTOR signaling in cancerCervical Cancer and HPV Research

PIK3CA and PTEN Mutations in Uterine Endometrioid Carcinoma and Complex Atypical Hyperplasia

Hayes, Monica Prasad, Wang, Hong, Espinal-Witter, Rosanny, Douglas, Wayne, Solomon, Garron J., Baker, Suzanne J., Ellenson, Lora Hedrick·2006·Clinical Cancer Research

Abstract

Purpose: The tumor suppressor PTEN gene and the PIK3CA oncogene are frequently mutated in uterine endometrioid carcinoma (UEC). PTEN mutations are also common in complex atypical hyperplasia (CAH), the precursor lesion of UEC. The status of PIK3CA has not yet been explored in CAH. In this study, we evaluated both CAH and UEC for PTEN and PIK3CA mutations. Experimental Design: Neoplastic tissue was microdissected, and DNA was extracted from 29 cases of CAH. DNA was available from 44 UEC cases previously characterized for PTEN mutations. Direct DNA sequencing of exons 9 and 20 of the PIK3CA gene was done on all 73 cases. In addition, CAH cases were analyzed for PTEN mutations. Statistical analyses were done using the Fisher's exact test. Results: Two (7%) of 29 CAH and 17 (39%) of 44 UEC cases contained a PIK3CA mutation (P = 0.003). Fourteen (48%) of 29 CAH cases had a PTEN mutation, but none contained both a PTEN and PIK3CA mutation. Twenty-five (57%) of 44 UEC cases had a PTEN mutation, and 12 (48%) of these 25 cases also contained a PIK3CA mutation. Coexistent PIK3CA and PTEN mutations were significantly correlated with UEC compared with CAH (P = 0.002), but the association in UEC did not reach statistical significance (P = 0.21). Conclusions: PIK3CA is the most commonly mutated oncogene in UEC; however, mutations are uncommon in CAH. Thus, mutations in PIK3CA, unlike PTEN mutations, are associated with invasion. These findings suggest that mutations in PIK3CA may serve as a marker of invasion with potential clinical use. Furthermore, PIK3CA and PTEN mutations may play distinct roles in endometrial tumorigenesis.

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Crossref · 10.1158/1078-0432.ccr-06-1375

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Authors
Hayes, M. P., Wang, H., Espinal-Witter, R., Douglas, W., Solomon, G. J., Baker, S. J., & Ellenson, L. H.
Affiliations
  • Cornell University (US)
  • St. Jude Children's Research Hospital (US)
Venue
Clinical Cancer Research
Published
2006-10-15
Volume
12
Issue
20
Pages
5932-5935
ISSN
  • 1078-0432 (ISSN-L)
  • 1557-3265
OpenAlex
W2101549875
Cited by
218
References
23
Citations by year
2025: 6 · 2024: 10 · 2023: 9 · 2022: 5 · 2021: 4 · 2020: 3 · 2019: 19 · 2018: 16 · 2017: 11 · 2016: 15 · 2015: 12 · 2014: 11 · 2013: 17 · 2012: 21
FWCI
13.15
Type
journal article
Language
en
Open access
closed
Locations
  • Clinical Cancer Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Cancer Institute (R01CA095427, CA 095427)
Topics
  • Health Sciences › Medicine › Obstetrics and Gynecology › Endometrial and Cervical Cancer Treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
  • Health Sciences › Medicine › Epidemiology › Cervical Cancer and HPV Research
Keywords
PIK3CA mutation, PTEN mutation, endometrioid endometrial cancer, complex atypical hyperplasia, endometrial tumorigenesis, tumor invasion, co-occurring mutations, precursor lesions
MeSH terms
DNA, Neoplasm, Endometrium, Female, Humans, Hyperplasia, Mutation, Uterine Neoplasms, Endometrial Neoplasms, Phosphatidylinositol 3-Kinases, PTEN Phosphohydrolase, Class I Phosphatidylinositol 3-Kinases

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