Genes Contributing to Hereditary Ovarian Cancer in Women and BRCA1/2 Wildtype Families

February 2, 2022 updated by: Elizabeth Swisher, University of Washington
The investigators propose to test for non-BRCA1/2 mutations in new and existing families with hereditary ovarian cancer in order to better define penetrance and associated malignancies of rare ovarian cancer susceptibility genes. The hypothesis is at least one third of hereditary ovarian carcinoma families wildtype for BRCA1/2 can be solved using an updated version of BROCA (BROCA-HR) that targets 47 genes, including all known ovarian cancer genes and additional candidate genes in related pathways. The objective is to identify families with mutations in rare ovarian cancer susceptibility genes and test both affected and unaffected family members, thereby generating a rough estimate of penetrance for each mutated gene as well as identify new ovarian cancer susceptibility genes. The investigators also plan to enroll self identified African America women, who have been drastically under-represented in clinical cancer genetic testing programs and in OC susceptibility research.

Study Overview

Status

Completed

Conditions

Detailed Description

There is more to hereditary ovarian cancer than the breast and ovarian cancer susceptibility genes BRCA1 and BRCA2 (BRCA1/2). Next generation sequencing techniques have made it possible to sequence multiple candidate ovarian carcinoma susceptibility genes simultaneously. The King Laboratory has developed a targeted capture and massively parallel sequencing test called BROCA to evaluate mutations in known or suspected breast and ovarian cancer genes. In a prospective series of 360 unselected women with ovarian carcinoma, the investigators found that nearly one fourth of women carried mutations in one of 13 genes, and mutations in genes other than BRCA1 and BRCA2 accounted for 26% of all inherited mutations. While BROCA and similar gene panels are already in clinical use, little is known about the relative risks of carrying these non-BRCA1/2 mutations, making it difficult to counsel unaffected family members and develop optimum prevention protocols.

Study Type

Observational

Enrollment (Actual)

34

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Washington
      • Seattle, Washington, United States, 98195
        • University of Washington

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

The investigators will enroll subjects from the following groups:1) African American women with ovarian carcinoma and 2) women with ovarian carcinoma and one of the following criteria:

  1. first or second degree relative with ovarian carcinoma or
  2. developed a second, independent primary invasive cancer or
  3. been identified with a suspected, deleterious, non-BRCA 1/2 mutation

Description

Inclusion Criteria:

  • ovarian cancer diagnosis with secondary criteria as noted above

Exclusion Criteria:

  • age less than 18 yrs

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Rate of deleterious germline mutations
Time Frame: 10 years
The rate of deleterious germline mutations in known ovarian cancer genes as identified using BROCA sequencing.
10 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Washington

Investigators

  • Principal Investigator: Elizabeth Swisher, MD, University of Washington

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

April 1, 2013

Primary Completion (Actual)

January 31, 2022

Study Completion (Actual)

January 31, 2022

Study Registration Dates

First Submitted

October 31, 2016

First Submitted That Met QC Criteria

April 13, 2017

First Posted (Actual)

April 18, 2017

Study Record Updates

Last Update Posted (Actual)

February 3, 2022

Last Update Submitted That Met QC Criteria

February 2, 2022

Last Verified

February 1, 2022

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • STUDY00001583

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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