Phenylketonuria Trial, Recruiting
Who may be able to join
AI generated eligibility summary. Written by an AI model from the official source data and checked on a sample basis. It can contain mistakes, so confirm anything important against the original source. How we use AI
Who might be able to join this trial:
Children and teenagers with PKU:
- Children and teenagers aged 3 to 17 years old
- People who were diagnosed with phenylketonuria (PKU) through newborn screening
- People who are currently receiving ongoing medical care for PKU
- For the diet-only group: people whose PKU is managed through a special low-phenylalanine diet alone, without taking the medications sapropterin or sepiapterin
- For the sapropterin group: people who have been taking the medication sapropterin for at least three months in a row, and whose ability to eat natural protein has at least doubled compared to before starting the medication
- For the sepiapterin group: people who have been taking the medication sepiapterin for at least three months in a row, and whose ability to eat natural protein has at least doubled compared to before starting the medication
Healthy household members (controls):
- People aged 3 years or older who live in the same household as a child or teenager participating in the trial with PKU
- People with no known diagnosis of PKU or any other inherited metabolic condition
Who may not be able to join:
- People who were born with structural physical abnormalities (congenital malformations)
- People who have a long-term condition affecting the digestive system
- People who have a condition affecting the hormone system, liver, or kidneys
- People who have another ongoing medical condition that could affect the balance of bacteria in the gut
- People who have followed a special medical diet for any condition other than PKU at any point in the six months before providing a stool sample
Important: Always verify eligibility with the trial site directly before applying.
Based on publicly available eligibility criteria from ClinicalTrials.gov. Verify directly with the trial site before acting. This is not medical advice.
Contact this trial
Principal Investigator: Anita MacDonald, PhD, Birmingham Children's Hospital
Phone: +44 121 333 9999
Contact details sourced from ClinicalTrials.gov. Verify directly with the trial site before attending.
GP referral letter
Print a one-page summary to share with your doctor.
Trial details
Where this trial is recruiting
Primary endpoints
Faecal gut microbiota taxonomic composition assessed by shotgun metagenomic sequencing
Can't join this trial?
Data last synced from ClinicalTrials.gov: 28 July 2026. Trial status can change. Always verify current status directly with the trial site before making any decision.