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Completed

NCT Number: NCT04236219

ALLN-346 Single Ascending Dose (SAD) Study in Healthy Volunteers

The purpose of this study is to evaluate the safety of ALLN-346 in healthy volunteers, in this first in human, single ascending dose study. ALLN-346 is an enzyme that degrades urate in the gastrointestinal tract.

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Key information

About this study

This is a Phase I, randomized, double-blind, placebo-controlled single ascending dose study of orally administered ALLN-346. The study will evaluate the safety and tolerability, inflammation and immunogenicity, pharmacokinetics and pharmacodynamics of ALLN-346 in healthy volunteers. The study consists of a Screening Period, a Treatment Period of 3 days, which includes 1 single day of dosing and 3 days of in-house observation, and a safety Follow-up Period through Day 28 following dosing.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Signed informed consent form
  • Incapable of pregnancy, not nursing, and agrees to use an effective method of contraception; males subjects must agree to abstain from sperm donation
  • Good general health as determined by medical history and physical examination
  • Normal clinical laboratory test results and ECG

Exclusion criteria

  • Presence or history of any significant cardiovascular, gastrointestinal, hepatic, renal, pulmonary, hematologic, endocrine, immunologic, dermatologic, neurological, psychiatric disease or history of hyperuricemia
  • Any other condition (including surgery) known to interfere with the absorption, distribution, metabolism, or excretion of medicines
  • Positive screen results for drugs of abuse, alcohol, or cotinine or recent history of drug or alcohol abuse
  • Clinically significant abnormal findings on physical examination, vital signs or on electrocardiogram (ECG)
  • Positive test result for hepatitis B surface antigen, hepatitis C virus antibody, or human immunodeficiency virus (HIV) antibody
  • Received treatment with or exposure to an Investigational drug or device within 30 days prior to or during Screening
  • Per Investigator judgment, is not an ideal clinical study candidate

Treatment and study plan

ALLN-346

Drug

ALLN-346 is novel urate oxidase provided as capsules for oral administration. Single ascending doses within 3 sequential cohorts: Cohort A - 3 capsules administered once, Cohort B - 6 capsules administered once and Cohort C - 12 capsules administered as 6 capsules twice on 1 day.

Other names: Engineered urate oxidase

Placebo

Drug

Matching placebo capsules for oral administration. Single ascending doses within 3 sequential cohorts: Cohort A - 3 capsules administered once, Cohort B - 6 capsules administered once and Cohort C - 12 capsules administered as 6 capsules twice on 1 day.

Other names: Matching placebo capsule

Primary outcomes

  1. Incidence of treatment emergent adverse events (TEAEs)

    Time frame: 28 days

    Number of participants with treatment emergent adverse events as assessed by the Common Terminology Criteria for Adverse Events (CTCAE) version 5.0

Secondary outcomes

  1. Anti-drug antibody assessment of immune response

    Time frame: 28 days

    Development of anti-drug antibodies (total Immunoglobin levels, mg/dL)

  2. Serum level of ALLN-346

    Time frame: 48 hours

    Change of serum ALLN-346 level (ng/mL)

  3. Serum ALLN-346 uricase activity level

    Time frame: 48 hours

    Change of serum ALLN-346 activity (ng/mL)

  4. Serum uric acid assessment of pharmacodynamic response

    Time frame: 48 hours

    Change in serum uric acid concentration (mg/dL)

  5. C-reactive protein (CRP) assessment of inflammation response

    Time frame: 48 hours

    Change in CRP blood levels (mg/L)

Sponsors and collaborators

Lead sponsor

Allena Pharmaceuticals

Industry

Registry information

Official study title

A Phase I Randomized, Double-Blind, Placebo-Controlled Single Ascending Dose Study of ALLN-346 (Engineered Urate Oxidase)

Acronym: SAD

Important dates

Study start
2020
Primary completion
2020
Study completion
2020
First posted
Jan 22, 2020
Registry last updated
Jul 23, 2021

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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