Condition
Phenylketonurias clinical trials and research
As of November 12, 2026, Find a Trial lists 7 Phenylketonurias clinical trials that are recruiting, at sites in 5 countries (most in United States (3), Switzerland (1), China (1)). By phase: Phase 1/2 (2). Every study is explained in plain English. Data from ClinicalTrials.gov and NIH RePORTER, updated November 12, 2026.
- 7Clinical trials
- 5Countries
Newest Phenylketonurias clinical trials
| Study | Phase | Where | Status | Registered |
|---|---|---|---|---|
| Walking program for children with fatty liver and phenylketonuria | — | Dokki, Giza Governorate | Recruiting | Dec 5, 2024 |
| Evaluating NGGT002 for treating adult Phenylketonuria | Phase 1/2 | Bengbu, Anhui and 1 other locations | Recruiting | Nov 14, 2024 |
| New psychological tools and anxiety intervention for adolescents with PKU | — | Columbia, Missouri | Recruiting | Aug 19, 2024 |
| Evaluating Large Neutral Amino Acids for Treating Phenylketonuria | — | Copenhagen and 1 other locations | Recruiting | Mar 29, 2024 |
| Gene therapy for adults with classic Phenylketonuria | Phase 1/2 | Orange, California and 4 other locations | Recruiting | Mar 27, 2024 |
| Investigating the impact of dietary guidelines on well-being in patients with Phenylketonuria | — | Zurich | Recruiting | Nov 19, 2021 |
| Effects of Palynziq on diet and health in patients with PKU | — | Atlanta, Georgia and 1 other locations | Recruiting | May 27, 2020 |
All recruiting trials (7)
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Walking program for children with fatty liver and phenylketonuria
This study is testing if a daily online walking program can help children with phenylketonuria and fatty liver feel better and improve their health.
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Evaluating NGGT002 for treating adult Phenylketonuria
This study is testing a new gene therapy called NGGT002 to see if it can safely help adults with classic Phenylketonuria lower their blood phenylalanine levels.
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New psychological tools and anxiety intervention for adolescents with PKU
This study is testing a new online program to help teenagers with PKU manage anxiety and depression better over 10 weeks.
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Evaluating Large Neutral Amino Acids for Treating Phenylketonuria
This study is testing if Large Neutral Amino Acids can be a better treatment for adults with Phenylketonuria than the usual diet that limits phenylalanine.
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Gene therapy for adults with classic Phenylketonuria
This study is testing a new gene therapy called NGGT002 to see if it can help adults with classic Phenylketonuria feel better and manage their condition.
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Investigating the impact of dietary guidelines on well-being in patients with Phenylketonuria
This study looks at how following dietary guidelines affects the health and well-being of people with Phenylketonuria (PKU) who are 10 years and older.
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Effects of Palynziq on diet and health in patients with PKU
This study is testing how the medication Palynziq affects the diet and overall health of people with PKU who are 16 and older.
Related topics
Quick answers
How many Phenylketonurias clinical trials are recruiting right now?
7, as of November 12, 2026. We update this list each time we refresh our data from ClinicalTrials.gov.
Where are these trials running?
In 5 countries. The most sites are in United States (3 trials), Switzerland (1 trial), China (1 trial), Egypt (1 trial), Denmark (1 trial). Each study page lists its sites and which ones are recruiting.
What phases are they in?
Phase 1/2: 2. Trials with no phase listed are usually device, behavioural or observational studies.
How do I join one?
Open a study, check the "Is this trial a fit for you?" section, then contact the study team listed on the page. They will ask a few screening questions. Asking is free and does not commit you to anything. Talk it over with your doctor first.
Find the studies that fit you
A list is a starting point. Tell us your situation in your own words and we'll rank the studies that match and explain why. It's free and needs no account.