ClinicalTrials.gg
TerminatedNCT04987294Updated Jun 23, 2023

Phase IIa Study of ALLN-346 (Engineered Urate Oxidase) in Subjects With Hyperuricemia, Gout and Chronic Kidney Disease

A Phase 2 interventional study of ALLN-346 and Placebo in Hyperuricemia, Gout and Chronic Kidney Diseases, sponsored by Allena Pharmaceuticals. Terminated at 17 sites in United States. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2023-06-23.

Sponsored by Allena Pharmaceuticals · Phase 2, Interventional, and Treatment

Why this study was terminated
Company Financing

From the registry’s dates

  • Primary completion was Sep 2022, 4 years 2 months ago, and no results have been posted to the registry.
Phase
Phase 2
Study type
Interventional
Enrollment
19
Allocation
Randomized
Ages
18 Years to 70 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 75 studies in Hyperuricemia with a site in United States — 6 open to participants now, 10 under way, 3 of them phase 3. Hyperuricemia · United States.

Enrollment
63rd of 70
19 · median 39
Started
2022
with 3 others
Phase 2
33 of 75
1 open now
Registered
57th of 75
by date
Lead sponsor
4 of 75
Allena Pharmaceuticals

Among the 75 studies in Hyperuricemia with a site in United States, this one is the 63rd largest by enrollment of the 70 interventional ones, is one of 4 that started in 2022, is one of 33 in phase 2, and was the 57th registered.

By phase

75 studies; the count open now beside each. This study's row is marked.

Phase 2this study33 · 1 open
Phase 117 · 0 open
Phase 39 · 2 open
No phase5 · 0 open
Observational5 · 1 open
Phase 43 · 1 open
Phase 1/22 · 0 open
Phase 2/31 · 1 open

By the year they started

First in 2004; this study’s year is marked. 4 started in 2022.

Size and results

Median enrollment 39 across the 70 interventional studies, 100 across the 5 observational. Of the 60 that completed or were terminated, 21 (35%) have results posted.

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Watch this landscapeDownload CSVWith an account: a weekly mail of what changed among 75 studies in Hyperuricemia with a site in United States, or all of them as a file.
02

Study summary

The purpose of this Phase IIa study is to evaluate the safety, tolerability and pharmacodynamics of ALLN-346 in subjects with hyperuricemia and gout, and with mild to moderate chronic kidney disease.

Read the detailed description

This is a randomized, double-blind, placebo-controlled parallel group, multi-center phase II clinical study or orally administered ALLN-346 in subjects with hyperuricemia, gout and mild to moderate chronic kidney disease over a two-week period. Subjects will be enrolled in two cohorts based on estimated glomerular filtration rate (eGFR).

03

Conditions studied

  • Hyperuricemia
  • Gout
  • Chronic Kidney Diseases
04

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Male or female, age 18 to 70 years
  • Serum UA level ≥ 8.0 mg/dL at Screening (hyperuricemia)
  • Meets 2015 American College of Rheumatology (ACR)/EULAR criteria for gout
  • Screening of ≥60 - \<90 mL/minute/1.73 m2 for Cohort A and ≥30 - \<60 mL/minute/1.73 m2 for Cohort B.
  • Concomitant medications stable for a minimum of 4 weeks prior to and during Screening
  • (BMI) ≥ 18 and ≤ 40 kg/m2, inclusive, at screening
  • Not pregnant, not capable of pregnancy, not nursing, and agrees to use an effective method of ; males subjects must agree to abstain from sperm donation

Exclusion criteria

Exclusion Criteria:

  • Currently taking any oral urate-lowering medication within 2 weeks prior to Screening
  • Prior uricase therapy or exposure to recombinant uricase, such as Rasburicase or Pegloticase
  • Gout flare requiring treatment within 14 days prior to or during Screening
  • finding during Screening, any ongoing clinically significant illness requiring a clinically significant intervention or change in management within 4 weeks prior to or during Screening
  • History of GI surgery, including gastric sleeve, Roux-en-Y or gastric banding (unless gastric band removed for a minimum of 12 months prior to Screening
  • Received treatment with or exposure to an drug or device within 30 days - prior to or during Screening
  • Prior dosing in ALLN-346 clinical study
  • Per Investigator judgment, is not an ideal clinical study candidate
Terms in these criteria, in plain language(5)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
19 participants (actual)

Study arms

  • Experimental
    ALLN-346 (Engineered Urate Oxidase)

    ALLN-346 is novel urate oxidase provided as capsules for oral administration. ALLN-346 will be administered as 5 capsules thrice daily (15 capsules per day total) to each of two subject cohorts based on estimated glomerular filtration rate (eGFR). Treatment Period is 14 Days.

    Drug: ALLN-346

  • Placebo comparator
    Placebo

    Matching placebo capsules for oral administration. Placebo capsules will be administered as 5 capsules thrice daily (15 capsules per day total) to each of two subject cohorts based on estimated glomerular filtration rate (eGFR). Treatment Period is 14 Days.

    Drug: Placebo

Interventions

  • ALLN-346 (Engineered Urate Oxidase) is an orally administered, novel urate oxidase; provided as capsules for oral administration

    Also known as: Engineered urate oxidase

  • DrugPlacebo

    Matched placebo capsules are similar in weight and appearance to the ALLN-346 capsules

    Also known as: Matching placebo capsule

06

What researchers measure

Primary outcomes

  1. Incidence of Treatment Emergent Adverse Events (TEAEs)

    Treatment emergent adverse events

    Time frame: 42 days

Secondary outcomes

  1. Serum Urate

    Serum urate \[mg/dL\]

    Time frame: 14 Days

07

Study locations

17 sites
  • University of Alabama at Birmingham
    Birmingham, Alabama 35294, United States
  • Syed Research Consultants, LLC
    Muscle Shoals, Alabama 35661, United States
  • Syed Research Consultants, LLC
    Sheffield, Alabama 35660, United States
  • Orthopedic Physicians Alaska
    Anchorage, Alaska 99508, United States
  • Allameh Medical Corporation
    Mission Viejo, California 92691, United States
  • Eastern Research, Inc.
    Hialeah, Florida 33013, United States
  • Best Quality Research, Inc.
    Hialeah, Florida 33016, United States
  • New Generation of Medical Research
    Hialeah, Florida 33016, United States
  • Kendall South Medical Center, Inc.
    Miami, Florida 33185, United States
  • The Center of Rheumatology and Bone Research
    Wheaton, Maryland 20902, United States
  • Elite Clinical Research, LLC
    Jackson, Mississippi 39202, United States
  • NY Total Medical Care, PC
    Brooklyn, New York 11215, United States
  • Burke Primary Care
    Morganton, North Carolina 28655, United States
  • Summit research Group, LLC
    Stow, Ohio 44224, United States
  • Northeast Clinical Research Center, LLC
    Bethlehem, Pennsylvania 18017, United States
  • P&I Clinical Research, LLC
    Lufkin, Texas 75904, United States
  • Briggs Clinical Research, LLC
    San Antonio, Texas 78224, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Sep 2022 to primary completion in Sep 2022, 0 months.

How these figures are worked out, and which studies are left out of them.

Registered
Jul 26, 2021
First posted
Aug 3, 2021
StartActual
Sep 2, 2022
Primary completionActual
Sep 2, 2022
CompletionActual
Sep 2, 2022
Last update
Jun 23, 2023
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jun 23, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04987294
Lead sponsor
Allena Pharmaceuticals
Responsible party
Sponsor
First posted
Aug 3, 2021
Start date
Sep 2, 2022
Primary completion
Sep 2, 2022
Completion
Sep 2, 2022
Last update
Jun 23, 2023

Study contacts

C Tosone, MS, RAC
study director · Allena Pharmaceuticals

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is terminated, as verified in Jun 2023. You cannot join it, but the record below documents what was studied.

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Discussion

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Studies of the drug tested here: ALLN-346

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