Study of a Phenylalanine Restricted Diet During Pregnancy to Prevent Symptoms in Offspring of Patients With Phenylketonuria

June 23, 2005 updated by: National Center for Research Resources (NCRR)

OBJECTIVES:

I. Assess the impact of a phenylalanine restricted diet during pregnancy on symptoms in offspring of patients with phenylketonuria.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

PROTOCOL OUTLINE: This is a multicenter study.

Patients receive a phenylalanine restricted diet based on a medical food such as Phenyl-free, Lofenalac, PKU 3, or Maximum XP (may be supplemented with tyrosine as needed) to achieve a target blood phenylalanine level of 2-6 mg/dL. The diet begins approximately 3 months prior to conception and continues until delivery of the baby. Patients are evaluated once a month before conception and weekly during pregnancy. Patients also undergo sonographic examination at 8, 20, 28, and 34 weeks gestation. At birth, the cord blood is evaluated for plasma amino acids. If the baby is found to have an elevated phenylalanine level, blood and urine are obtained to determine the baby's genetic status. Phenylalanine and tyrosine levels are checked in the baby daily for three days after birth.

The baby is followed for physical and mental development at 3 and 6 months and then annually thereafter.

Study Type

Interventional

Phase

  • Not Applicable

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

1 second and older (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Female

Description

  • Women with diagnosis of phenylketonuria who are planning on becoming pregnant Slightly elevated phenylalanine level (hyperphe variant) allowed

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

National Center for Research Resources (NCRR)

Collaborators

University of Texas

Investigators

  • Study Chair: Bobbye M. Rouse, University of Texas

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

December 1, 1983

Study Registration Dates

First Submitted

August 3, 2000

First Submitted That Met QC Criteria

August 3, 2000

First Posted (Estimate)

August 4, 2000

Study Record Updates

Last Update Posted (Estimate)

June 24, 2005

Last Update Submitted That Met QC Criteria

June 23, 2005

Last Verified

August 1, 2000

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 199/15326
  • UTMB-83-188

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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