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Gene Expression in Predicting Response to Paclitaxel in Patients With Breast Cancer

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified May 2006 by National Cancer Institute (NCI).
Recruitment status was:  Active, not recruiting
National Cancer Institute (NCI)
Information provided by:
National Cancer Institute (NCI) Identifier:
First received: May 9, 2009
Last updated: December 17, 2013
Last verified: May 2006

RATIONALE: DNA analysis of tumor tissue may help doctors predict how patients who receive paclitaxel will respond to treatment.

PURPOSE: This laboratory study is evaluating gene expression in predicting response to paclitaxel in patients with breast cancer.

Condition Intervention
Breast Cancer
Genetic: cytogenetic analysis
Genetic: gene expression analysis
Genetic: microarray analysis
Genetic: mutation analysis
Genetic: reverse transcriptase-polymerase chain reaction
Other: immunohistochemistry staining method

Study Type: Observational
Official Title: Determination Of FEZ1/LZTS1 Expression As A Predictor Of Response To Taxol

Resource links provided by NLM:

Further study details as provided by National Cancer Institute (NCI):

Primary Outcome Measures:
  • Evaluation of the association between tumor expression of FEZ1/LZTS1 gene and response to paclitaxel

Secondary Outcome Measures:
  • Utility of FEZ1/LZTS1 gene expression in predicting the full 4-level response pattern (complete response, partial response, stable disease, progressive disease)

Estimated Enrollment: 120
Study Start Date: March 2003
Detailed Description:


  • Determine whether loss of function of the FEZ1/LZTS1 gene is a predictor of response in patients with breast cancer treated with paclitaxel.

OUTLINE: This is a single-blind study.

Tumor tissue is analyzed for FEZ1/LZTS1 gene expression by immunohistochemistry using an antibody for the gene. Tumor expression of the gene is characterized by immunohistochemistry and scored by intensity of staining, percent of cell staining, and staining index. Tumor tissue is also analyzed for FEZ1/LZTS1 gene disruption by reverse transcriptase-polymerase chain reaction and direct sequencing.

PROJECTED ACCRUAL: Approximately 120 patients will be accrued for this study.


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No


  • Diagnosis of breast cancer
  • Measurable disease

    • Metastatic disease identified by imaging studies OR a primary disease site that will be treated in a neoadjuvant protocol
    • Lesions ≥ 10 mm by spiral CT scan
  • Tumor tissue from the primary or metastatic site available for analysis by immunohistochemistry
  • Previously treated OR planning to undergo treatment with paclitaxel* NOTE: *Concurrent enrollment on ECOG-2100 allowed
  • Hormone receptor status:

    • Not specified


  • Not specified


  • See Disease Characteristics
  Contacts and Locations
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Please refer to this study by its identifier: NCT00898690

Sponsors and Collaborators
Sidney Kimmel Cancer Center at Thomas Jefferson University
National Cancer Institute (NCI)
Principal Investigator: Carlo M. Croce, MD Sidney Kimmel Cancer Center at Thomas Jefferson University
  More Information Identifier: NCT00898690     History of Changes
Other Study ID Numbers: CDR0000355163
Study First Received: May 9, 2009
Last Updated: December 17, 2013

Keywords provided by National Cancer Institute (NCI):
stage I breast cancer
stage II breast cancer
stage IIIA breast cancer
stage IIIB breast cancer
stage IIIC breast cancer
stage IV breast cancer
recurrent breast cancer

Additional relevant MeSH terms:
Breast Neoplasms
Neoplasms by Site
Breast Diseases
Skin Diseases processed this record on April 28, 2017