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Phenylketonuria clinical trials in Portland, OR

5 studies for Phenylketonuria are looking for participants at sites in and around Portland (within about 30 miles). Open a study to see who can join and how to contact the study team.

Recruiting for a study here? Feature it at the top of this page — $99 for 30 days →

A Study of JNT-517 in Participants With Phenylketonuria (PKU)

RecruitingPhase 3
  • Oregon Health and Science University, Portland
Ages 18 and older · All sexes · Updated Jul 8, 2026 · NCT06971731

Immune Modulation During Palynziq® Treatment in Adults (IMPALA)

RecruitingPhase 4
  • Oregon Health & Science University (OHSU) - PARENT, Portland
Ages 18 to 65 · All sexes · Updated Jun 17, 2026 · NCT07477691

A Long-Term Study of JNT-517 in Participants With Phenylketonuria

RecruitingPhase 3
  • Oregon Health and Science University, Portland
Ages 4 and older · All sexes · Updated May 1, 2026 · NCT06628128

A Long-term, Post-marketing Safety Study of Palynziq in Patients With PKU (PALace)

RecruitingObservational study
  • Oregon Health and Science University, Portland
All ages · All sexes · Updated Mar 25, 2026 · NCT05813678

A Long Term, Post-marketing Study of Immune Response in Patients Receiving Palynziq Treatment for PKU (PALisade)

RecruitingObservational study
  • Oregon Health & Science University, Portland
All ages · All sexes · Updated Mar 24, 2026 · NCT06305234

About Phenylketonuria

In phenylketonuria (PKU), your body can't process phenylalanine, an amino acid in most foods. Read about genetics, screening, and special diets.

More about Phenylketonuria on MedlinePlus

Phenylketonuria trials in other cities

Other studies in Portland

From ClinicalTrials.gov, data retrieved Oct 5, 2026. Each study sets its own eligibility; the study team decides who can join.