Endolymphatic Sac Tumors in a Population of Patients With Von Hippel-Lindau Disease:The Natural History and Pathobiology, and a Prospective Non-Randomized Clinical Trial of Hearing Preservation Surgery in Patients With Early Stage Endolymphatic Sac Tumors

March 3, 2008 updated by: National Institute of Neurological Disorders and Stroke (NINDS)
The von Hippel Lindau (VHL) gene has recently been identified as the genetic defect resulting in a syndrome of multiple neoplasias. Patients with VHL disease develop retinal angiomata, renal cysts and/or carcinomas, CNS hemangioblastomas as well as pancreatic cysts and pheochromocytomas. Investigators have shown the gene to be a tumor suppressor type proto-oncogene located at chromosomal locus 3p26. The gene includes three exons whose gene product targets a cellular transcription factor Elongin SIII. Binding of the VHL proteins to two subunits of this elongation factor inhibits transcription and may play a crucial role in the clinical development of the von Hippel Lindau phenotype.

Study Overview

Status

Completed

Conditions

Detailed Description

The von Hippel Lindau (VHL) gene has recently been identified as the genetic defect resulting in a syndrome of multiple neoplasias. Patients with VHL disease develop retinal angiomata, renal cysts and/or carcinomas, CNS hemangioblastomas as well as pancreatic cysts and pheochromocytomas. Investigators have shown the gene to be a tumor suppressor type proto-oncogene located at chromosomal locus 3p26. The gene includes three exons whose gene product targets a cellular transcription factor Elongin SIII. Binding of the VHL proteins to two subunits of this elongation factor inhibits transcription and may play a crucial role in the clinical development of the von Hippel Lindau phenotype.

Study Type

Observational

Enrollment

75

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
    • Maryland
      • Bethesda, Maryland, United States, 20892
        • National Institute of Neurological Disorders and Stroke (NINDS)

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

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Patients meeting the diagnostic criteria for von Hippel-Lindau (VHL) disease.

No persons who are pregnant or lactating are eligible for the surgical arm of this protocol until the pregnancy and/or nursing period has reached completion.

No patients with disorders associated with multiple abnormalities of the middle ear and inner ear. Specific laboratory abnormalities such as anti-HIV-1, FTA-Abs, serum ANA, and ANCA have been associated with AIDS, Syphilis, Systemic Lupus Erythematosus, and Wegener's Granulomatosis, respectively.

No patients currently undergoing chemotherapeutic regimen with ototoxic agents (e.g., cisplatin). Other agents will be reviewed on a case-by-case basis for their potential to cause ototoxicity and thereby interfere with audiologic data interpretation.

Patients with an ELST in an only hearing ear will be excluded from the protocol for surgical treatment of ELST's (except in cases where other medical indications necessitate intervention for the welfare of the patient).

Patients with only unilateral vestibular function on the side affected by the ELST, as documented by caloric ENG testing, will be excluded from the surgical treatment group in most cases.

No patients with the inability to understand all of the requirements of the study or inability to give informed consent and/or comply with all aspects of the evaluation.

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?

Collaborators and Investigators

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

Sponsor

National Institute of Neurological Disorders and Stroke (NINDS)

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, 1997

Study Completion

April 1, 2000

Study Registration Dates

First Submitted

November 3, 1999

First Submitted That Met QC Criteria

December 9, 2002

First Posted (Estimate)

December 10, 2002

Study Record Updates

Last Update Posted (Estimate)

March 4, 2008

Last Update Submitted That Met QC Criteria

March 3, 2008

Last Verified

May 1, 1999

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 970102
  • 97-N-0102

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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