Trial record 20 of 76 for:    Open Studies | "Thalassemia"

A Case Control Study to Evaluate the Cognitive and Brain Function of β-thalassemia Patients.

This study is not yet open for participant recruitment. (see Contacts and Locations)
Verified September 2013 by HaEmek Medical Center, Israel
Information provided by (Responsible Party):
HaEmek Medical Center, Israel Identifier:
First received: August 7, 2013
Last updated: September 2, 2013
Last verified: September 2013

β-thalassemia syndromes are a group of hereditary disorders characterized by a genetic deficiency in the synthesis of beta-globin chains.

In recent studies done in β-thalassemia major patients abnormal iron deposition was evident using MRI in brain structures, cortex, putamen, and caudate nucleus . In most of the cases the neurological involvement is subclinical. Cognitive functioning was evaluated in beta thalassemia major, compared with healthy controls, using a neuropsychological battery including tests of abstract reasoning, attention, executive functions, language, constructional/visuospatial skills, and memory. Patients with beta thalassemia major, in particular those showing signs of hemosiderosis, had significantly impaired function in all neuropsychological tests. There was no relationship between cognitive performances and signs of deferoxamine toxicity, deferoxamine dosage, and levels of hemoglobin and ferritin. Event-related potentials (ERPs) are one of the most informative and dynamic methods of monitoring the information stream in the living brain. ERPs are linked in time with a physical or mental event, and are typically extracted from the scalp-recorded electroencephalogram (EEG) by means of signal averaging.

ERPs have been used in the assessment of cognitive function in several disorders, including anemia and iron deficiency anemia. However, literature regarding cognitive function and ERP activity in thalassemia patients is extremely limited, especially in adults.

The purpose of this study is to evaluate the cognitive and brain function in a group of 60 thalassemia patients and compare the results to healthy controls.

Brain Function (Measured by ERP Level)

Study Type: Observational
Study Design: Observational Model: Case Control
Time Perspective: Prospective
Official Title: A Case Control Study to Evaluate the Cognitive and Brain Function of β-thalassemia Patients in EMEK MEDICAL CENTER Compare to Healthy Controls.

Resource links provided by NLM:

Further study details as provided by HaEmek Medical Center, Israel:

Primary Outcome Measures:
  • Brain function assessment evaluated by Event-related potentials (ERPs of the information stream in the brain of Thalassemia patients. [ Time Frame: one year ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • correlation between brain function evaluated by ERP measurements and Hemosiderosis parameters like ferritin levels, Iron transferrin and Saturation. [ Time Frame: one year ] [ Designated as safety issue: No ]

Other Outcome Measures:
  • correlation between pre and post transfusion status related to the Hemoglobin concentration and brain function measured by ERP. [ Time Frame: one year ] [ Designated as safety issue: No ]

Estimated Enrollment: 120
Study Start Date: September 2013
Estimated Primary Completion Date: August 2014 (Final data collection date for primary outcome measure)

Ages Eligible for Study:   6 Years to 70 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population

60 Thalasssemia major and intermedia patients. 60 healthy controls.


Inclusion Criteria:

  • Thalassemia major and intermedia patients older than 6 years treated at Emek Medical Center Afula Israel.
  • healthy controls matched for age and ethnicity.

Exclusion Criteria:

  • patients suffering from acute diseases.
  Contacts and Locations
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No Contacts or Locations Provided
  More Information

No publications provided

Responsible Party: HaEmek Medical Center, Israel Identifier: NCT01935661     History of Changes
Other Study ID Numbers: 111-12-EMC
Study First Received: August 7, 2013
Last Updated: September 2, 2013
Health Authority: Israel: Ministry of Health

Keywords provided by HaEmek Medical Center, Israel:
Blood transfusion

Additional relevant MeSH terms:
Anemia, Hemolytic
Anemia, Hemolytic, Congenital
Genetic Diseases, Inborn
Hematologic Diseases
Hemoglobinopathies processed this record on July 28, 2015