ClinicalTrials.gg
CompletedNCT05168683Updated Jan 23, 2023

Scintigraphy Study in Healthy Volunteers to Characterize the Performance of ALLN-346 Tablets

A Phase 1 interventional study of Each ALLN-346 treatment will be radiolabelled to contain 4 MBq 99mTc at time of dosing with light meal and Each ALLN-346 treatment will be radiolabelled to contain 4 MBq 99mTc at time of dosing in fasted/fed state in Hyperuricemia and Gout, sponsored by Allena Pharmaceuticals. Completed at 1 site in United Kingdom. Open to male participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-01-23.

Sponsored by Allena Pharmaceuticals · Phase 1, Interventional, and Other

From the registry’s dates

  • Primary completion was Feb 2022, 4 years 8 months ago, and no results have been posted to the registry.
Phase
Phase 1
Study type
Interventional
Enrollment
12
Allocation
Non-randomized
Ages
18 Years to 65 Years
Sex
Male
01

Study summary

The purpose of the study is to understand the gastrointestinal transit time and disintegration behavior of the formulations in vivo in normal healthy volunteers when ALLN-346 formulations are given with light meal or in fasted or other fed states.

Read the detailed description

This study includes two parts. Part One will evaluate two ALLN-346 formulations, a fast release and a slower sustained release. Subjects will receive a single tablet of each formulation and a capsule of each formulation at separate assessment visits. Subjects will attend a maximum of 4 assessment visits. The primary purpose of this part of the study is to understand the gastrointestinal transit time and disintegration behaviour of the formulations in vivo in normal healthy volunteers when ALLN-346 formulations are given with light meal.

Part Two will involve a second cohort of subjects and will comprise further scintigraphic studies on one or both formulation(s) from Part One in fasted and/or fed states. Subjects will attend a maximum of 4 assessment visits, the number of treatment arms will be decided following completion of Part One.

02

Conditions studied

  • Hyperuricemia
  • Gout

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03

In context

Hyperuricemia

240 studies on the registry are indexed under Hyperuricemia; 44 are open to participants now.

This study's enrollment of 12 is below the median of 68 across 193 interventional studies indexed under Hyperuricemia.

Browse Hyperuricemia studies →

Lead sponsor

Allena Pharmaceuticals is the lead sponsor of 12 studies on the registry; none are open to participants now.

Of its 9 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
Male
Accepts healthy volunteers
Yes

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

  • between 18 and 30 kg/m², inclusive.
  • Body weight ≥50 kg
  • Voluntary written
  • Good general health with no and/or relevant abnormalities of medical history or prior to dosing evaluations, including physical examination, vital signs and and screening clinical laboratory results

Exclusion criteria

Exclusion Criteria:

  • Current or recurrent disease that could affect the study conduct or laboratory assessments
  • History of current or relevant previous non-self-limiting gastrointestinal disorders
  • Currently suffering from disease known to impact gastric emptying, e.g., migraine, Type 1 or Type 2 diabetes mellitus
  • Untreated hypertension or has hypertension under treatment.
  • Diagnosis of an illness or a condition requiring chronic immunosuppression.
  • As a result of a physical examination or screening investigations, and available prior to dosing evaluations, the PMI or medically qualified designee/physician responsible considers the volunteer unfit for the study
  • Any contradictions to the gamma scintigraphy procedure
  • Measured body temperature >38°C at screening visit (COVID-19 risk reduction procedure)
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.

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.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

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.

ECG (electrocardiogram)

A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

05

Study design

Phase
Phase 1
Primary purpose
Other
Allocation
Non-randomized
Intervention model
Crossover assignment
Masking
None (open label)
Enrollment
12 participants (actual)

Study arms

  • Experimental
    Part One

    Four Study Treatments will be dosed during Part One of the study with radiolabelled ALLN-346 tablets (in 12 subjects): Treatment A ALLN-346 enteric coated (EC) fast release tablet; Treatment B ALLN-346 fast release capsule; Treatment C ALLN-346 EC slow release tablet; Treatment D ALLN-346 slow release capsule. Subjects will be dosed in a lightly fed state.

    Drug: Each ALLN-346 treatment will be radiolabelled to contain 4 MBq 99mTc at time of dosing with light meal

  • Experimental
    Part Two

    Following completion of Part One of the study, study treatment (one or both of those administered in Part One) and dosing requirements will be confirmed for dosing in Part Two, to be administered in fasted and/or fed states (in 12 subjects).

    Drug: Each ALLN-346 treatment will be radiolabelled to contain 4 MBq 99mTc at time of dosing in fasted/fed state

Interventions

  • DrugEach ALLN-346 treatment will be radiolabelled to contain 4 MBq 99mTc at time of dosing with light meal

    Dosing or radiolabelled ALLN-346 fast or slow release tablets or capsules. Scintigraphic images will be taken

    Also known as: Engineered urate oxidase radiolabelled

  • DrugEach ALLN-346 treatment will be radiolabelled to contain 4 MBq 99mTc at time of dosing in fasted/fed state

    Selected dosing of Part One treatments in fasted and/or fed states

    Also known as: Engineered urate oxidase radiolabelled

06

What researchers measure

Primary outcomes

  1. Scintigraphic images to detect transit time of radiolabel release

    To assess the onset of disintegration/release with transit time for the radiolabelled study treatments in each ALLN-346 formulation

    Time frame: 12 hours

Secondary outcomes

  1. Incidence of Adverse Events

    Number of subjects with treatment emergent adverse events

    Time frame: 14 Days

07

Study locations

1 site
  • BDD Pharma Ltd Bio-Imaging Centre Within Glasgow Royal Infirmary
    Glasgow, Scotland G4 0SF, United Kingdom
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 23, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT05168683
Lead sponsor
Allena Pharmaceuticals
Collaborators
BDD Pharma Ltd
Responsible party
Sponsor
First posted
Dec 23, 2021
Start date
Jan 11, 2022
Primary completion
Feb 23, 2022
Completion
Feb 23, 2022
Last update
Jan 23, 2023

Study contacts

Christine Tosone
study director · Allena Pharmaceuticals, Inc.

Oversight

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

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

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