A Study to Evaluate Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of AG-181 in Subjects With Phenylketonuria

Trial statusRecruiting
Trial phasePhase 1
Trial typeInterventional
Biological sexAll
Age18-69
SponsorAgios Pharmaceuticals, Inc.

About this trial

The primary purpose of this study is to assess the safety and tolerability of AG-181 in subjects with Phenylketonuria (PKU).

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Diagnosis of PKU, defined as documented presence of 2 mutant alleles in the phenylalanine hydroxylase (PAH) gene, of which at least 1 is the R408W mutation, as determined during Screening per the genotyping performed by the study central genotyping laboratory.

At least 1 plasma Phe concentration greater than (>) 600 micromoles per liter (μmol/L) in the 52 weeks before providing informed consent.

Average concentration of plasma Phe > 600 μmol/L in Phe samples taken during Screening, with no individual assessment below 360 μmol/L. Any Phe samples taken after Day -20 will not be included.

Body mass index (BMI) greater than or equal to (≥) 18.0 kilograms per meter square (kg/m²) to lesser than or equal to (≤) 35.0 kg/m² and weight ≥ 50 kilograms (kg) at any time during the Screening Period.

Disqualifiers

Prior exposure to AG-181.

Receiving inhibitors of P-glycoprotein (P-gp) that have not been stopped for ≥ 5 days or a timeframe equivalent to 5 half-lives (whichever is longer) before administration of the first dose of study drug.

Receiving products that are strong inhibitors or strong inducers of cytochrome P450 CYP1A2, CYP2C8, or CYP3A that have not been stopped for ≥ 28 days before administration of the first dose of study drug.

Receiving treatment with an acid-reducing agent, including but not limited to proton pump inhibitors and H2 blockers. Short-acting acid-reducing agents such as calcium carbonate are permitted.

Trial design

Design model

Sequential

Treatments tested in this trial

  • AG-181

    Drug

    AG-181 film-coated tablets

Treatment groups

20 Participants
are divided into 2 treatment groups
Group A: Cohort 1: AG-181Experimental treatment 1 intervention
Group B: Cohort 2 (Optional Cohort): AG-181Experimental treatment 1 intervention

Trial outcomes

Primary outcomes

1

Number of Subjects with Adverse Events (AEs) and Serious Adverse Events (SAEs) by Type, Severity, and Relationship to the Study Drug

Time frame
Up to Day 42

Secondary outcomes

1

Plasma Concentration of AG-181

Time frame
Up to Day 28
2

Maximum Concentration (Cmax) of AG-181

Time frame
Up to Day 28
3

Time to Maximum (Peak) Concentration (Tmax) of AG-181

Time frame
Up to Day 28
4

Area Under the Concentration-Time Curve (AUC) of AG-181

Time frame
Up to Day 28

Other outcomes

Sponsors and contacts

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