Genetic Analysis of Thyrotoxic Periodic Paralysis

March 5, 2007 updated by: Ramathibodi Hospital

Genetic Analysis of Thai Patients With Thyrotoxic Periodic Paralysis

Thyrotoxic periodic paralysis (TPP) is characterized by episodes of reversible hypokalemia and weakness in thyrotoxic patients. It is commonly found in males of Asian descent and is also seen in individuals having Native American or Hispanic ancestry. Therefore genetic etiology has been hypothesized. This study, we aim to find the susceptibility genes that associate with TPP. Both candidate genes approach and genome wide association study have been conducted.

Study Overview

Status

Completed

Conditions

Detailed Description

This study is a genetic association study. It included 50 cases of TPP patients and 80 cases of male, hyperthyroid patients who didn't have hypokalemia as a well characterized controls. After informed consent were obtained, genomic DNA from leukocyte were extracted. Pooled DNA were constructed and whole genome scan using 10K GeneChip microarray were genotyped on pooled genomic DNA.

Study Type

Observational

Enrollment

80

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

15 years and older (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Male

Description

Inclusion Criteria:

TPP

  • Hyperthyroid patients from any causes
  • Evidence of hypokalemia (k<3.5 mg/dl)from intracellular shift (Urine K<15 mg/dl, TTKG<2)
  • Episodic paralysis

Exclusion Criteria:

  • Hypokalemia from GI or renal loss

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

Collaborators and Investigators

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

Sponsor

Ramathibodi Hospital

Investigators

  • Principal Investigator: Wallaya Jongjaroenprasert, MD, Endocrinology Unit, Ramathibodi Hospital, Mahidol University

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

January 1, 2004

Study Completion

December 1, 2005

Study Registration Dates

First Submitted

March 5, 2007

First Submitted That Met QC Criteria

March 5, 2007

First Posted (Estimate)

March 6, 2007

Study Record Updates

Last Update Posted (Estimate)

March 6, 2007

Last Update Submitted That Met QC Criteria

March 5, 2007

Last Verified

March 1, 2007

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 11-46-21

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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