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OncologyPhase 1NCT04727138

3-part Study to Assess Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of EXS21546

A Phase 1 study testing EXS21546 Powder for Oral Suspension, EXS21546 Granule in Capsule and Midazolam in people with Oncology, run by Exscientia AI Limited at 1 site in United Kingdom.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

A 3-part Study to Assess Safety, Tolerability, PK and PD of Single (Part 1) and Multiple (Part 2) Ascending Doses of EXS21546, and to Evaluate the Relative Bioavailability of a Solid Dose Formulation Compared to a Powder for Oral Suspension (Part 3), in Healthy Male Subjects. Read more about this study

Who is it for?
Ages 18 to 55 years, men onlyHealthy volunteers can take part
Conditions the study is for
Oncology
What is being tested?
EXS21546 Powder for Oral Suspension, EXS21546 Granule in Capsule and Midazolam
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
64 participants
Where
1 siteUnited Kingdom
Study dates
8 Dec 2020to 12 May 2022
Phase
Phase 1
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 55 years
  • Men only
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • BMI 18.0 to 30.0 kg/m2
  • Weight ≥60 kg
  • Must adhere to contraception requirements

Who cannot join

  • Subjects who have received any IMP in a clinical research study within the 90 days prior to Day 1
  • Subjects who have previously been administered IMP in this study.
  • Evidence of current SARS-CoV-2 infection
  • History of any drug or alcohol abuse in the past 2 years
  • Regular alcohol consumption in males >21 units per week
  • A confirmed positive alcohol breath test at screening or admission
Show all 15Show fewer
  • Current smokers and those who have smoked within the last 12 months. A confirmed breath carbon monoxide reading of greater than 10 ppm at screening or admission
  • Current users of e-cigarettes and nicotine replacement products and those who have used these products within the last 12 months
  • Subjects with pregnant or lactating partners
  • Positive hepatitis B surface antigen (HBsAg), hepatitis C virus antibody (HCV Ab) or human immunodeficiency virus (HIV) antibody results
  • Regimen L only: History of sleep apnea
  • Subjects with a history of cholecystectomy or gall stones
  • Serious adverse reaction or serious hypersensitivity to any drug or the formulation excipients
  • Presence or history of clinically significant allergy requiring treatment, as judged by the investigator. Hay fever is allowed unless it is active
  • Donation of blood or plasma within the previous 3 months or loss of greater than 400 mL of blood

Trial locations and contacts

1 site in 1 country.

United Kingdom1 site
  • Quotient Sciences

    Nottingham, NG11 6JS

Other trials in United Kingdom

About this study

Official title: 3-part Study to Assess Safety, Tolerability, PK and PD of Single and Multiple Ascending Doses of EXS21546, and to Evaluate the Relative Bioavailability of 2 Formulations, in Healthy Male Subjects

A 3-part Study to Assess Safety, Tolerability, PK and PD of Single (Part 1) and Multiple (Part 2) Ascending Doses of EXS21546, and to Evaluate the Relative Bioavailability of a Solid Dose Formulation Compared to a Powder for Oral Suspension (Part 3), in Healthy Male Subjects.

Read the detailed description

Part 1 is a randomised, double-blind, placebo-controlled, SAD study with a food effect assessment.

Part 2 is a randomised, double-blind, placebo controlled, MAD study over 14 days. In order to explore the potential CYP3A4 inducer effect, midazolam will also be administered in one cohort.

Part 3 is a 3-period, open label, randomised, sequential study. Each subject will receive solid dose formulation and powder for oral suspension in a randomised manner.

Conditions
Oncology
Being tested
EXS21546 Powder for Oral Suspension, EXS21546 Granule in Capsule, Midazolam, Food Effect, Placebo Powder for Oral Suspension
Medical subject headings
Neoplasms

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • EXS21546 Powder for Oral SuspensionDrug

    EXS21546 Powder for Oral Suspension

  • EXS21546 Granule in CapsuleDrug

    EXS21546 Granule in Capsule

  • MidazolamOther

    Interaction

  • Food EffectOther

    Fed/Fasted

  • Placebo Powder for Oral SuspensionOther

    Placebo Powder for Oral Suspension

Study groups in NCT04727138
Study groupRoleWhat they receive
EXS21546 Powder for Oral SuspensionExperimentalEXS21546 Powder for Oral Suspension
Receives: Drug: EXS21546 Powder for Oral Suspension; Other: Midazolam; Other: Food Effect
PlaceboPlacebo comparatorPlacebo Powder for Oral Suspension
Receives: Other: Midazolam; Other: Food Effect; Other: Placebo Powder for Oral Suspension
EXS21546 Granule in CapsuleExperimentalEXS21546 Granule in Capsule
Receives: Drug: EXS21546 Granule in Capsule; Other: Food Effect

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of participants with treatment emergent Adverse Events

    Number of participants with treatment emergent Adverse Events

    Measured: 1 month

  2. EXS21546 and Metabolite Area under the plasma concentration versus time curve (AUC)

    EXS21546 and Metabolite Area under the plasma concentration versus time curve (AUC)

    Measured: 17 days

  3. EXS21546 and Metabolite Peak Plasma Concentration (Cmax)

    EXS21546 and Metabolite Peak Plasma Concentration (Cmax)

    Measured: 17 days

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted27 Jan 2021
  2. Study start8 Dec 2020
  3. Primary completion16 Apr 2022
  4. Study completion12 May 2022

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Sequential
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
64 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04727138
Sponsor's protocol ID
EXS21546-001
Status last verified
May 2022
First submitted
23 Dec 2020
Last updated
16 May 2022
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing EXS21546 Powder for Oral Suspension, EXS21546 Granule in Capsule and Midazolam in people with Oncology, run by Exscientia AI Limited at 1 site in United Kingdom.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 15 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 16 May 2022. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United Kingdom. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of participants with treatment emergent Adverse Events (time frame: 1 month). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 16 May 2022.

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