Bone Mineral Density in Adults With Hyperphenylalaninemia

Interested in this Trial?

Contact Us

Trial Status Completed

Trial Identifier

NCT01209819

Condition

Phenylketonuria, Phenylketonurias

The below information is taken directly from public registry websites such as ClinicalTrials.gov, EuClinicalTrials.eu, ISRCTN.com, etc. and has not been edited.

Trial Summary

Hyperphenylalaninemia (HPA) is a rare metabolic disorder caused by a deficiency of the enzyme phenylalanine hydroxylase (PAH). Elevated plasma levels of phenylalanine (phe) cause mental retardation, microcephaly, delayed speech, seizures, eczema, and behavior problems. Adequate control of the plasma levels of phe by a phe-restricted diet can prevent the developmental and behavioral problems.

The foundation of this diet is a phe-free medical product/formula made from free amino acids. Based on longitudinal studies, it has been reported that the most benefit is attained by individuals who maintain a phe-restricted diet throughout life. Despite the obvious benefits of the diet, it has been suggested that the dietary restrictions may be associated with poor bone health in these patients. However, data supporting this has been reported in studies with small sample sizes and/or inadequate sample populations that include children. There is a paucity of data on bone health in adults with HPA.

The investigators propose an observational study to describe the bone health status among adults with a diagnosis of HPA and to compare them to established normative age and gender-specific values among healthy individuals. The investigators hypothesize that adults with HPA will have lower bone density as measured by a dual x-ray absorptiometry (DXA) scan compared to the established normative values.

Eligibility Criteria

Birth Sex

All

Age

From 18 Years

Healthy Volunteers

No

Study Type:

Observational

Number of Participants:

28

Study Started:

2010-09

Study Updated:

2015-06-12

Trial Locations

  • University of Texas Health Science Center at Houston

    Houston, Texas, United States

Inclusion Criteria

  • Diagnosis of HPA at birth
  • Aged 18 or older

Exclusion Criteria

  • Peri-menopausal women
  • Menopausal women
  • Patients taking bisphosphonates
  • Pregnant women
  • Women who have been pregnant within one year of study enrollment
  • Women who have breastfed within one year of study enrollmen

Contact BioMarin Clinical Trials

Please complete and submit the following form to express interest in participating and request more information about one of our clinical trials.

By completing this form and clicking the send button, you understand and hereby consent to storage of your personal information, including within the United States and Europe, which will be accessible by BioMarin for purposes such as responding to your request, quality control, fulfilling compliance obligations, and assisting with products, services, or clinical trials. Depending on where you live, you may have the right to request access to, removal, or correction of your personal information held by BioMarin. You may submit your request via the contact information and/or webform located within the full BioMarin Privacy Policy.

*required fields

"*" indicates required fields

This field is hidden when viewing the form
This field is hidden when viewing the form