Exogenous Toxicants and Genetic Susceptibility in ALS

This study has been completed.
Information provided by:
National Institute of Environmental Health Sciences (NIEHS)
ClinicalTrials.gov Identifier:
First received: February 12, 2001
Last updated: March 22, 2006
Last verified: March 2006
Amyotrophic lateral sclerosis (ALS), also known as Lou Gehrig's disease, is a fatal neurodegenerative disease that poses a significant burden for affected individuals and their family members. The principal objective of this epidemiologic study is to identify environmental and genetic risk factors for ALS. Of primary interest is whether environmental chemicals such as heavy metals, pesticides and organic solvents contribute to the cause of ALS. We also aim to identify genetic factors that contribute to the risk of ALS because individuals with certain genetic traits may be unable to protect against the toxic effects of chemical exposure. Other factors that may protect against the development of ALS, such as dietary antioxidants, are also under investigation. If modifiable factors affecting the risk for ALS could be identified, interventions to delay or even prevent the development of ALS could be developed.

Amyotrophic Lateral Sclerosis

Study Type: Observational
Study Design: Observational Model: Defined Population
Time Perspective: Cross-Sectional

Resource links provided by NLM:

Further study details as provided by National Institute of Environmental Health Sciences (NIEHS):

Estimated Enrollment: 525
Study Start Date: September 1996
Estimated Study Completion Date: August 2002
Detailed Description:
The principal objective of this study is to identify environmental and/or genetic risk factors for amyotrophic lateral sclerosis (ALS). We are addressing this objective by conducting a case-control study of ALS in the Northern California Kaiser Permanente Medical Care Program (KPMCP). Over a four-year period, approximately 175 persons newly diagnosed with ALS will be identified and recruited through physician referrals and computerized mechanisms available within the Kaiser system. The patients with ALS will be compared to a sample of 350 age- and gender-matched persons without ALS from the same membership. Specific study aims are as follows: (1) to investigate the association of ALS with exposure to neurotoxicants including lead, other heavy metals, solvents and pesticides; (2) to determine whether inadequate oxidative defenses for protecting against free-radicals enhance the toxicity of exogenous exposures; (3) to examine the evidence for familial aggregation of neurodegenerative diseases among first-degree relatives of patients with ALS; and (4) to estimate the incidence of ALS in diverse racial and ethnic groups.

Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes

Individuals with ALS within the Kaiser Permanente population of Northern California, ages 18 years and older, with first diagnosis of ALS in the years 1996-2000.

Controls are individuals who are age- and sex-matched to the patients with ALS, also from the Kaiser Permanente population.

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  More Information

ClinicalTrials.gov Identifier: NCT00011154     History of Changes
Other Study ID Numbers: 8150-CP-001 
Study First Received: February 12, 2001
Last Updated: March 22, 2006
Health Authority: United States: Federal Government

Additional relevant MeSH terms:
Amyotrophic Lateral Sclerosis
Central Nervous System Diseases
Metabolic Diseases
Motor Neuron Disease
Nervous System Diseases
Neurodegenerative Diseases
Neuromuscular Diseases
Proteostasis Deficiencies
Spinal Cord Diseases
TDP-43 Proteinopathies

ClinicalTrials.gov processed this record on May 02, 2016