The Dallas Hereditary Spherocytosis Cohort Study

May 13, 2013 updated by: University of Texas Southwestern Medical Center

The purpose of this study is to

  1. better characterize the short term and long term natural history of hereditary spherocytosis (HS) including diagnosis, complications, and indications for and response to splenectomy
  2. evaluate and describe the health-related quality of life in children with HS.

Study Overview

Status

Terminated

Conditions

Detailed Description

Patients with a new or established diagnosis of HS seen at Children's Medical Center will be asked to enroll in the study. Previous and current medical records will be reviewed to systematically catalogue their history of HS, including diagnosis, complications, hospitalizations, medications and laboratory data. Health-related quality of life questionnaires will be given to the patients and their parents at enrollment and periodically during the follow-up. Those who agree will have up to three small samples of blood collected and frozen for future laboratory studies of complications associated with HS and/or splenectomy.

We anticipate enrolling approximately 200 children and young adults with HS in this study and following them until adulthood (age 18-21 years).

Study Type

Observational

Enrollment (Actual)

55

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

No older than 19 years (Child, Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Center for Cancer and Blood Disorders outpatient clinics

Description

Inclusion Criteria:

  • Diagnosis of HS with or without prior splenectomy
  • Age 0 - 21 years
  • Spanish-speaking subjects are eligible to participate

Exclusion Criteria:

  • Unable to provide contact information for follow-up

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

  • Observational Models: Cohort
  • Time Perspectives: Prospective

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Health related quality of life
Time Frame: Approximately at 5 years
PedsQL measurement
Approximately at 5 years

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Primary indications for splenectomy
Time Frame: Approximately at 5 years
Primary indication for splenectomy determined at time of splenectomy, if performed.
Approximately at 5 years
Complications of HS
Time Frame: Approximately at 5 years and at 10 years
Approximately at 5 years and at 10 years
Complications of splenectomy
Time Frame: Approximately at 5 years
Approximately at 5 years
Diagnosis of HS
Time Frame: At enrollment
At enrollment

Collaborators and Investigators

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

Sponsor

University of Texas Southwestern Medical Center

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

May 1, 2010

Primary Completion (Actual)

May 1, 2013

Study Completion (Actual)

May 1, 2013

Study Registration Dates

First Submitted

June 4, 2010

First Submitted That Met QC Criteria

June 8, 2010

First Posted (Estimate)

June 10, 2010

Study Record Updates

Last Update Posted (Estimate)

May 14, 2013

Last Update Submitted That Met QC Criteria

May 13, 2013

Last Verified

May 1, 2013

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • IRB # 022010-024

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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