Relationship of estrogen and progesterone receptors to clinical outcome in metastatic endometrial carcinoma: a Gynecologic Oncology Group Study.

Relationship of estrogen and progesterone receptors to clinical outcome in metastatic endometrial carcinoma: a Gynecologic Oncology Group Study. Research Abstract Details 

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Relationship of estrogen and progesterone receptors to clinical outcome in metastatic endometrial carcinoma: a Gynecologic Oncology Group Study. Abstract Text:

Meenakshi Singh,Richard J Zaino,Virginia J Filiaci,Kimberly K Leslie,

INTRODUCTION: The goal of this study was to explore the relationship between the expression of hormone receptors in metastatic endometrial tumors and clinical response to daily tamoxifen citrate and intermittent weekly medroxyprogesterone acetate. STUDY DESIGN: Patients with measurable recurrent or advanced endometrial cancer were enrolled on a clinical trial, Gynecologic Oncology Group Study 119. A pretreatment tumor biopsy was obtained and subjected to immunohistochemical analyses. Estrogen receptor-alpha (ER-alpha) and progesterone receptor (PR) were assessed on frozen tissues, and PR isoforms A and B were detected on fixed tissues. The receptors were scored using a semi-quantitative HSCORE, with a cut off greater than 75 considered positive. RESULTS: Of the 60 eligible patients, 45 had evaluable tissues for all receptors. For ER, 40% of the cases were positive; for PR, 45% were positive. The sub-cellular distribution of PRA was exclusively nuclear, and 16% of the tumors demonstrated positive staining. PRB was nuclear and cytoplasmic, with 22% of the tumors staining for nuclear PRB and 36% of the tumors staining for cytoplasmic PRB. ER and PR from frozen tissues and PRA and cytoplasmic PRB from fixed tissues significantly decreased with increasing tumor grade. The co-expression of ER-alpha with PR from the frozen tissues (r=0.68, p<0.001) and PRA (r=0.58, p<0.001) from the fixed tissues was statistically significant. The ER HSCORE was related to both response and overall survival; there was no statistically significant correlation of PR with clinical response in this small number of patients. CONCLUSION: ER-alpha measured in metastatic endometrial carcinoma tissue prior to hormonal therapy was statistically significantly related to clinical response to daily tamoxifen and intermittent medroxyprogesterone acetate.

Relationship of estrogen and progesterone receptors to clinical outcome in metastatic endometrial carcinoma: a Gynecologic Oncology Group Study. Publishing Authors By Initials

M Singh,RJ Zaino,VJ Filiaci,KK Leslie,

For similar diagnosis: prognosis: treatment outcome research abstracts see: diagnosis: prognosis: treatment outcome research

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Relationship of estrogen and progesterone receptors to clinical outcome in metastatic endometrial carcinoma: a Gynecologic Oncology Group Study. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Gynecologic oncology

VOLUME: 106

Page Numbers: 325-33

Journal Abbreviation: Gynecol. Oncol.

ISSN: 0090-8258

DAY: 25

MONTH: 05

YEAR: 2007

Relationship of estrogen and progesterone receptors to clinical outcome in metastatic endometrial carcinoma: a Gynecologic Oncology Group Study. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 365304

Relationship of estrogen and progesterone receptors to clinical outcome in metastatic endometrial carcinoma: a Gynecologic Oncology Group Study. Keywords Mesh Terms:

KEYWORDS: Treatment Outcome

MESH TERMS: administration & dosage

Chemical & Substance for Abstract: Relationship of estrogen and progesterone receptors to clinical outcome in metastatic endometrial carcinoma: a Gynecologic Oncology Group Study. Information

Substance Name: Medroxyprogesterone 17-Acetate

Registry Number: 71-58-9

Grant and Affiliation Information for Relationship of estrogen and progesterone receptors to clinical outcome in metastatic endometrial carcinoma: a Gynecologic Oncology Group Study.

AFFILIATION: Department of Pathology, The University of Colorado Health Sciences Center, Denver, CO 80262, United States.

Country: United States

AGENCY: United States NCI

GRANT: CA 37517

ACRONYM: CA

MEDLINETA: Gynecol Oncol

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