Environmental Polymorphisms Registry

This study is currently recruiting participants. (see Contacts and Locations)
Verified April 2016 by National Institutes of Health Clinical Center (CC)
Information provided by (Responsible Party):
National Institutes of Health Clinical Center (CC) ( National Institute of Environmental Health Sciences (NIEHS) )
ClinicalTrials.gov Identifier:
First received: June 19, 2006
Last updated: May 11, 2016
Last verified: April 2016

This study conducted by the NIEHS and the University of North Carolina Medical Center will create and maintain a biorespository containing the genetic material (DNA) from up to 20,000 individuals recruited from North Carolina. These samples will allow scientists to look for differences in each individual s DNA. These differences are not known to be associated with any condition or disease to date, but the purpose of the study is test these differences for possible susceptibility to (or protection to) common conditions such as asthma, cardiovascular disease, cancer and many others. Many of the differences to be studied are in environmental response genes. These genes determine the various ways humans respond to toxic substances in the environment, their diet and lifestyles (e.g. no exercise vs. exercise), and exposures to other substances, e.g. therapeutics.

Participants will be recruited from the general NC population through health fairs, studies drives at community venues and corporations, and from out patient clinics within the University of North Carolina health care system. Participants can also visit one of two locations in the Research Triangle area to volunteer for this study. All participants will be asked to provide a blood sample and some basic information on their gender, race and ethnicity, and will be compensated for their time by receiving $20.

DNA will be extracted from the blood, encrypted with a secret identification number, and placed in the registry's biorepository. The registry will exist for up to 25 years. During that time, the DNAs will be available to researchers to look for the differences in the DNAs as described above. Participants who have certain differences might be asked to participate in a future study of people with the same DNA differences. The future studies will most likely involve filling out a questionnaire or participating in a telephone survey, but may involve being interviewed or having a physical examination or laboratory evaluation, including blood tests. Participants will be asked to update their contact information once a year for up to 25 years.


Study Type: Observational
Official Title: Environmental Polymorphism Registry (EPR)

Further study details as provided by National Institutes of Health Clinical Center (CC):

Estimated Enrollment: 20000
Study Start Date: November 2003
Detailed Description:

We are establishing a large biorepository of frozen DNA specimens (approximately 20,000) in which the DNAs are linked to the donor s identities, contact information, and some basic demographics through a personal identification number (PIN). DNAs are available to investigators in coded form to anonymously screen for the presence of Single-nucleotide polymorphisms (SNPs) and other mutations by standard genotyping methods. Once participants with the genotypes of interest have been identified, investigators can apply for re-identification of the specimens and ask the same participants to participate in follow-up phenotyping studies in a process known as phenotype-by-genotype. Investigators may also select participants to participate in follow-up studies based upon exposure or disease states of interest, as we are increasing the phenotypic characterization of participants through administration of health and exposure surveys, including the 214-question Health and Exposure Survey, which provides data on family history of disease, occupational, socioeconomic status, and lifestyle for EPR participants. As additional surveys are implemented, data from these surveys will be used to identify participants for participation in follow-up studies based upon genotype, exposure, and disease states.

To investigate the feasibility of establishing this biorepository, named the Environmental Polymorphisms Registry (EPR), we conducted a pilot study (Environmental Polymorphisms Study or EPS) at two University of North Carolina (UNC) Healthcare clinics, (February-August 2001). The EPS assessed the willingness of outpatients to participate in a genetic study of this sort and identified potential problems that might arise when conducting a much larger 20,000- specimen registry (EPR). Recruitment rates were high, with 77% of patients approached enrolling in the registry. Based on these results, we decided to proceed with recruitment for the EPR. EPS participants and their specimens were incorporated into the larger EPR and the EPS and EPR protocols were merged into this one protocol.

EPR participants are recruited from and enrolled at the NIEHS Clinical Research Unit (CRU), National Institutes of Health (NIH) Clinical Center, various healthcare clinics, and from the general public. The latter includes university campuses, health fairs, study drives held at various locations (e.g., corporations, community centers, community events, etc.) and the EPR website. Participants are asked to donate blood for DNA isolation and archiving. Consent is administered during which participants are told that their specimens will be used for genetic screening projects, we will contact them annually to update contact information, and they may be recontacted to participate in voluntary followup studies. EPR participants will also be given the opportunity to complete the EPR Health and Exposure Survey, in order to collect health, family history of disease, environmental exposure, socioeconomic status, and lifestyle data. Information collected in the survey will be used to better characterize the EPR population, making it more useful in answering research questions related to gene environment interactions. Participants may be contacted to participate in follow-up studies based upon the data collected by the survey.


Ages Eligible for Study:   8 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
  • Adults (greater than or equal to 18 years of age) or minors (ages 8-17 years old) are eligible to enroll in the Environmental Polymorphisms Registry.
  • Participants must be able to understand and provide written informed consent (adult participants or parent/ guardian of minors) and

assent (minors) to participate.

There are no other inclusion or exclusion criteria.

  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00341237

Contact: Shepherd H Schurman, M.D. (919) 541-7736 schurmansh@mail.nih.gov

United States, Maryland
National Institutes of Health Clinical Center, 9000 Rockville Pike Recruiting
Bethesda, Maryland, United States, 20892
United States, North Carolina
University of North Carolina Recruiting
Chapel Hill, North Carolina, United States, 27599-7030
Rex UNC Health Care Center Recruiting
Raleigh, North Carolina, United States, 27607
NIEHS Clinical Research Unit (CRU) Recruiting
Research Triangle Park, North Carolina, United States
Contact: Stavros Garantziotis, M.D.    919-541-0985    garantziotis@niehs.nih.gov   
Sponsors and Collaborators
National Institute of Environmental Health Sciences (NIEHS)
Principal Investigator: Shepherd H Schurman, M.D. National Institute of Environmental Health Sciences (NIEHS)
  More Information

Additional Information:
Responsible Party: National Institutes of Health Clinical Center (CC) ( National Institute of Environmental Health Sciences (NIEHS) )
ClinicalTrials.gov Identifier: NCT00341237     History of Changes
Other Study ID Numbers: 040053  04-E-0053 
Study First Received: June 19, 2006
Last Updated: May 11, 2016
Health Authority: United States: Federal Government

Keywords provided by National Institutes of Health Clinical Center (CC):
Environmental Factor
Single Nucleotide Polymorphism

ClinicalTrials.gov processed this record on May 23, 2016