~4 spots leftby Mar 2026

Efficacy and Safety of SYNB1618 and SYNB1934 in Adult Patients With Phenylketonuria

(SynPheny-1 Trial)

Recruiting in Palo Alto (17 mi)
+10 other locations
Age: 18+
Sex: Any
Travel: May Be Covered
Time Reimbursement: Varies
Trial Phase: Phase 2
Waitlist Available
Sponsor: Synlogic
No Placebo Group
Prior Safety Data

Trial Summary

What is the purpose of this trial?This Phase 2 study in patients with phenylketonuria (PKU) will be an open-label, dual-arm study of either a SYNB1618 or SYNB1934 dose-ramp regimen. All evaluations and assessments throughout this study may be conducted either at the clinical site or by a home healthcare professional at an alternative location (e.g., patient's home, hotel).

Eligibility Criteria

Inclusion Criteria

Age ≥ 18 years.
Able and willing to voluntarily complete the informed consent process.
Diagnosis of classic PKU based on medical history as assessed by the investigator (e.g., Phe concentration of >1200 µmol/L at any time, low dietary Phe tolerance, or genetic diagnosis).
+7 more

Participant Groups

2Treatment groups
Experimental Treatment
Group I: SYNB1934Experimental Treatment1 Intervention
Dose ramp of SYNB1934
Group II: SYNB1618Experimental Treatment1 Intervention
Dose ramp of SYNB1618

Find a Clinic Near You

Research Locations NearbySelect from list below to view details:
Children's Hospital ColoradoAurora, CO
University of Pittsburgh Medical CenterPittsburgh, PA
Vanderbilt University Medical CenterNashville, TN
University of Texas Health Science Center at HoustonHouston, TX
More Trial Locations
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Who Is Running the Clinical Trial?

SynlogicLead Sponsor

References