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Validation of Saliva in the Esoterix Genetic Laboratories Fragile X Assay

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified June 2012 by Esoterix Genetic Laboratories, LLC.
Recruitment status was:  Not yet recruiting
Information provided by (Responsible Party):
Esoterix Genetic Laboratories, LLC Identifier:
First received: June 7, 2012
Last updated: NA
Last verified: June 2012
History: No changes posted
The purpose of this research is to determine if saliva samples can be used as an alternate sample type to test for fragile X. By using saliva instead of blood, it would be easier for patients to have fragile X testing.

Fragile X Syndrome

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective
Official Title: Acquisition of Saliva Samples for Validation as a Specimen Type in the Esoterix Genetic Laboratories Fragile X Assay

Resource links provided by NLM:

Further study details as provided by Esoterix Genetic Laboratories, LLC:

Biospecimen Retention:   Samples With DNA
In some cases, the de-identified, residual saliva specimen may be used in quality assurance; it may be used in clinical testing as a control; it may be used for future research studies.

Estimated Enrollment: 100
Study Start Date: July 2012
Estimated Study Completion Date: December 2012
Estimated Primary Completion Date: December 2012 (Final data collection date for primary outcome measure)
Fragile X full mutation (affected)
Individual whose previous blood specimen was tested at Esoterix Genetic Laboratories and molecular analysis for fragile X revealed >200 CGG repeats with abnormal methylation pattern; interpretation is full mutation for fragile X syndrome
Fragile X premutation (carriers)
Individual whose previous blood specimen was tested at Esoterix Genetic Laboratories and molecular analysis for fragile X revealed 55-200 CGG repeats with normal methylation pattern; interpretation is premutation carrier of fragile X syndrome
Fragile X intermediate
Individual whose previous blood specimen was tested at Esoterix Genetic Laboratories and fragile X molecular analysis revealed 45-54 CGG repeats; interpretation is intermediate, not a carrier of a fragile X expansion mutation

Detailed Description:

Saliva samples will be prospectively collected from subjects who have previously been tested by Esoterix Genetic Laboratories, LLC using blood specimens and diagnosed as fragile X intermediates, premutations (carriers) or full mutations (affected). Results from fragile X testing with saliva will be compared to results from the blood sample that was previously submitted to Esoterix Genetic Laboratories for testing.

Data from this study will be used for regulatory submissions.


Ages Eligible for Study:   Child, Adult, Senior
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Fragile X full mutations (affecteds), fragile X premutations (carriers), and fragile X intermediates who previously had fragile X testing through Esoterix Genetic Laboratories. Subject population will be in the US.

Inclusion Criteria:

  • Subject has previously been identified through molecular testing at Esoterix Genetic Laboratories as a Fragile X intermediate, premutation (carrier) or full mutation (affected).
  • In the opinion of the subject's physician, the subject is medically stable and able to provide the required quantity of saliva.
  • If Subject is at least 18 years of age:
  • Subject must be willing to give written informed consent
  • Subject must be willing to comply with the collection procedure
  • If Subject is under 18 years of age, the legally authorized representative must give written informed consent and agree to comply with study procedures.

Exclusion Criteria:

  • Subject has been determined to be an individual with a normal FMR1 gene.
  • Subject has a known medical condition that would cause risk to the donor or, if relevant, the fetus as a result of saliva collection.
  Contacts and Locations
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Please refer to this study by its identifier: NCT01616589

Contact: Naomi Nakata, MA 310 482-5561

United States, Massachusetts
Integrated Genetics Not yet recruiting
Westborough, Massachusetts, United States, 01581
Contact: Naomi Nakata, MA    310-482-5561   
Sponsors and Collaborators
Esoterix Genetic Laboratories, LLC
Principal Investigator: Thomas Scholl, PhD Esoterix Genetic Laboratories, LLC
  More Information

Responsible Party: Esoterix Genetic Laboratories, LLC Identifier: NCT01616589     History of Changes
Other Study ID Numbers: GGFX0001
Study First Received: June 7, 2012
Last Updated: June 7, 2012

Keywords provided by Esoterix Genetic Laboratories, LLC:
Fragile X syndrome
Fragile X full mutation
Fragile X premutation
Fragile X intermediate
CGG repeat length

Additional relevant MeSH terms:
Fragile X Syndrome
Mental Retardation, X-Linked
Intellectual Disability
Neurobehavioral Manifestations
Neurologic Manifestations
Nervous System Diseases
Sex Chromosome Disorders
Chromosome Disorders
Congenital Abnormalities
Genetic Diseases, Inborn
Genetic Diseases, X-Linked
Heredodegenerative Disorders, Nervous System processed this record on May 23, 2017