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Bioequivalence of Azathioprine Suspension 10 mg/mL (Jayempi) Versus Azathioprine Tablet 50mg (Imurek®)

A Single Centre, Two Period Crossover Study to Assess the Bioequivalence of an Oral Azathioprine Suspension 10 mg/mL (Jayempi™) Versus Oral Azathioprine Tablet 50mg (Imurek®) in at Least 30 Healthy Adult Subjects Under Fasting Conditions

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03930264
Acronym
AZA
Enrollment
30
Registered
2019-04-29
Start date
2019-04-11
Completion date
2019-05-31
Last updated
2021-06-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Therapeutic Equivalency

Brief summary

A single center, single dose, open-label, randomized, two period crossover study to assess the bioequivalence of an oral azathioprine suspension 10 mg/mL (Jayempi™) versus oral azathioprine tablet 50mg (Imurek®, Aspen Pharma Trading Limited, Dublin, Ireland.) in at least 30 healthy adult subjects under fasting conditions.

Detailed description

This will be a single-dose, open-label, randomised, two-period crossover study with orally administered 1 x 5mL (50 mg) of Jayempi™ Oral Suspension 10mg/mL versus oral azathioprine tablet 50mg (Imurek®, Aspen Pharma Trading Limited, Dublin, Ireland) on two separate occasions conducted under fasting conditions in healthy male and female subjects at a single study centre. The study will comprise: * Thiopurine methyltransferase (TPMT) testing; * Screening period of maximum 28 days * Two treatment periods (each of which will include a PK profile period of 12 hours) separated by a wash-out period of at least 3 calendar days (minimum number of days based on half-life of the analyte) and maximum of 14 calendar days between consecutive administrations of the IMP * A post-study visit 7-10 days after the last dose of the last treatment period of the study. Subjects will be randomly assigned to treatment sequence, prior to the first administration of IMP.

Interventions

DRUGAzathioprine 50Mg Tab

tablet

DRUGAzathioprine 10mg/mL oral suspension

oral suspension

Sponsors

Medicines Evaluation Unit Ltd
CollaboratorINDUSTRY
Syne Qua Non Limited
CollaboratorINDUSTRY
Alderley Analytical Ltd.
CollaboratorINDUSTRY
Black County Pathology Services
CollaboratorOTHER
Diamond Pharma Services Regulatory Affairs Consultancy
CollaboratorOTHER
Boyd Consultants
CollaboratorINDUSTRY
Nova Laboratories Limited
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
OTHER
Masking
SINGLE (Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

* Healthy Volunteers. * No significant medical history or conditions that may interfere with the study. * Adequate contraception.

Exclusion criteria

* Volunteers who may be likely to have the inherited mutated NUDT15. * Subjects with a deficient, low or intermediate TPMT enzyme activity. * Disease that may interfere with the safety of the participant or the study outcome measures. * Participants who want to procreate in the next 6 months.

Design outcomes

Primary

MeasureTime frameDescription
Maximum Observed Plasma Concentration (Cmax)18 hoursThe maximum (peak) plasma concentration assesses the rate of drug absorption
AUC0-t18 hoursArea under the curve time=0 hours to t hours
AUC0-∞18 hoursArea under to curve from time=0 hours to infinity

Countries

United Kingdom

Participant flow

Recruitment details

Cross Over

Participants by arm

ArmCount
Imurek®, First
Generic name : Azathioprine Trade name : Imurek® 50mg tablet Dosage form : Tablet containing 50 mg azathioprine Dose : 1 x Imurek 50mg Tablet per treatment period under fasting conditions Mode of administration : Orally Manufacturer : Aspen Pharma Trading Limited, Dublin, Ireland Country of origin : Ireland Azathioprine: tablet
15
Jayempi™, First
Generic name : Azathioprine Trade name : (Jayempi™) 10 mg/ mL Oral solution Dosage form : Oral suspension containing 10 mg/mL Azathioprine Dose : 1 x 5mL (50 mg) of Jayempi™ Oral Suspension 10mg/mL per treatment period under fasting conditions Mode of administration : Orally Manufacturer : Nova Laboratories Ltd. Country of origin : Leicester, UK Azathioprine: oral suspension
15
Total30

Baseline characteristics

CharacteristicJayempi™, FirstTotalImurek®, First
Age, Continuous
Age
33.5 years
STANDARD_DEVIATION 9.61
37 years
STANDARD_DEVIATION 9.88
40.8 years
STANDARD_DEVIATION 9
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
1 Participants1 Participants0 Participants
Race (NIH/OMB)
Black or African American
2 Participants2 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
12 Participants27 Participants15 Participants
Sex: Female, Male
Female
6 Participants11 Participants5 Participants
Sex: Female, Male
Male
9 Participants19 Participants10 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 300 / 30
other
Total, other adverse events
2 / 300 / 30
serious
Total, serious adverse events
0 / 300 / 30

Outcome results

Primary

AUC0-∞

Area under to curve from time=0 hours to infinity

Time frame: 18 hours

ArmMeasureValue (MEAN)Dispersion
ImurekAUC0-∞17.71 h.ng/mLStandard Deviation 27.1
Jayempi™AUC0-∞18.96 h.ng/mLStandard Deviation 31.6
p-value: 0.569690% CI: [0.96, 1.09]ANOVA
Primary

AUC0-t

Area under the curve time=0 hours to t hours

Time frame: 18 hours

ArmMeasureValue (MEAN)Dispersion
ImurekAUC0-t17.10 h.ng/mLStandard Deviation 33.8
Jayempi™AUC0-t18.17 h.ng/mLStandard Deviation 32.1
p-value: 0.106190% CI: [1, 1.13]ANOVA
Primary

Maximum Observed Plasma Concentration (Cmax)

The maximum (peak) plasma concentration assesses the rate of drug absorption

Time frame: 18 hours

ArmMeasureValue (MEAN)Dispersion
ImurekMaximum Observed Plasma Concentration (Cmax)15.49 ng/mLStandard Deviation 67.1
Jayempi™Maximum Observed Plasma Concentration (Cmax)17.35 ng/mLStandard Deviation 54.4
p-value: 0.300890% CI: [0.93, 1.35]ANOVA

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026