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Bioavailability and Safety Study Comparing Two Dose Levels of AMZ001 and One Dose Level of Diclofenac Sodium 1% Gel in Healthy Participants

A Phase 1, Single-Center, Randomized, Open-Label, Bioavailability and Safety Three Period Crossover Multiple-Dose Study Comparing Two Dose Levels of AMZ001 (Diclofenac Sodium Gel 3.06%) and One Dose Level of Diclofenac Sodium 1% Gel in Healthy Subjects

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05968482
Enrollment
74
Registered
2023-08-01
Start date
2023-07-11
Completion date
2024-12-02
Last updated
2025-04-09

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

Conditions

Healthy

Brief summary

The goal of this clinical trial is to compare drug exposure from two different products (AMZ001 and Diclofenac Sodium 1% Gel) in healthy participants on Day 7 after repeated topical administrations for 7 days. Participants will receive, in a crossover design, three different treatments * AMZ001 Low dose * AMZ001 High dose * Diclofenac Sodium 1% Gel Safety and tolerability of AMZ001 will be also investigated.

Detailed description

On their both knees, participants will apply once daily either low dose of AMZ001 or high dose of AMZ001 for 7 consecutive days. Participants will also apply Diclofenac Sodium 1% Gel as per label information on each knee. Intensive pharmacokinetic assessment (blood samplings) will be performed on the first day of application (Day 1) as well as on the last day of application (Day 7). Each participant will receive each of the three treatments in a randomized manner. Between each treatment, participant will not receive any of the three tested therapies between 3 weeks before receiving the next therapy. (washout period) Participants will stay on the clinical unit only during each period of treatment but not during washout period.

Interventions

Topical application on both knees

Sponsors

Amzell
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
Yes

Inclusion criteria

* Healthy male or female participants 18-65 years of age (e.g., in general good physical health, as judged by the Investigator and no clinically relevant abnormalities identified by a detailed medical history, full physical examination, including blood pressure and pulse rate measurement, 12-lead ECG (electrocardiogram) or clinical laboratory tests) * Has a body mass index (BMI) between 18.0 and 35.0 kg/m\^2 (kilogram per square meter) at Screening. * In the case of females of child-bearing potential (\[FCBP) unless surgically sterilized \[hysterectomy, bilateral oophorectomy, bilateral tubal ligation\] or are postmenopausal for at least 12 months), are using two acceptable forms of birth control (hormonal contraceptives i.e., oral/implant/injectable/transdermal; intrauterine device (IUD) and/or barrier methods \[female condom, male condom, diaphragm, cervical cap, spermicide\]; note: 2 barrier methods are two acceptable forms of birth control)). Abstinence or partner's vasectomies are acceptable if the female participant agrees to implement two acceptable forms of birth control if her lifestyle/partner changes. * Females of child-bearing potential have a negative serum pregnancy test (SPT) at Screening and negative urine pregnancy test (UPT) on Day -1 of each period and at end of treatment (EOT) visit * Are free of any systemic or dermatologic disorder and chronic or acute infections, which, in the opinion of the Principal Investigator (PI), will interfere with the study results or increase the risk of adverse events (AEs) * Read, understand, and provide signed informed consent before any assessment is performed.

Exclusion criteria

* Participant has any visible skin disease, skin lesions, wounds, or a significant amount of hair at the application site (knee) * Use of an investigational medicinal product (IMP) within 30 days or 5 half-lives (if known), whichever is longer, of enrollment or during the study. * Treated with systemic or local diclofenac within 30 days of enrollment or during the study (except for study IMP) * Known hypersensitivity to diclofenac, aspirin, Xarelto, coumadin, or other non-steroidal anti-inflammatory drugs (NSAIDs), including Cyclooxygenase-2 (COX-2) inhibitors. * Any history of drug hypersensitivity, asthma, urticaria, or other significant allergic diathesis. Participants with uncomplicated seasonal allergic rhinitis can be accepted only if the expected allergy season is clearly outside enrollment / treatment periods. * Females who are pregnant and/or lactating * Of child-bearing potential but not willing to use adequate contraception for the duration of the study * Participant is a current smoker and unable to abstain from smoking during the treatment periods. * Use of any topical medication, cosmetics, cream, ointments, lotions on the treatment site 1 week prior to enrollment through EOT visit * Use of any medication (including over-the-counter medication, dietary supplements, and herbal remedies) within 2 weeks before first scheduled study drug administration or within less than 5 times the elimination half-life of the respective drug (whichever is longer) or is anticipated to require concomitant medication during the 2-week period or at any time throughout the study. Consumption of any drug metabolizing enzyme (e.g., cytochrome P450 3A4 (CYP3A4) or other cytochrome P450 enzymes) inducing or inhibiting beverages or food (e.g., broccoli, Brussel sprouts, grapefruit, grapefruit juice, star fruit) within 3 days prior to and during each treatment period * Participant has a known or suspected malignancy, excluding basal cell cancer unless it is associated with the treatment area. * Participant has a positive blood screen for human immunodeficiency virus (HIV), hepatitis B surface antigen (HBsAg), hepatitis C antibody (Anti-HCV) * Participant has any acute or chronic condition or is using medications, which, in the investigator's opinion, would make it unsafe for the participant to participate in this study, including clinically significant abnormal laboratory values, vital signs, physical examination findings prior to randomization or during study participation. * History or current evidence of renal disease or impaired renal function at screening as indicated by abnormal levels of serum creatinine (greater than (\>) 1.43 mg/dL (milligram per deciliter)) or blood urea nitrogen (greater than or equal to (≥) 35 mg/dL) or the presence of clinical significant abnormal urinary constituents (e.g., albuminuria) * History or current evidence of ongoing hepatic disease or impaired hepatic function at screening. A participant will be excluded if more than one of the following lab value deviations are found: 1) aspartate aminotransferase (AST) (≥ 1.5 upper limit of normal (ULN)), alanine aminotransferase (ALT) (≥ 1.5 ULN), 2) Gamma-Glutamyl Transferase (GGT) (≥ 1.5 ULN), alkaline phosphatase (ALP) (≥ 1.5 ULN), 3) total bilirubin (\> 2.00 mg/dL) or creatine kinase (≥ 3 ULN). A single deviation from the above values is acceptable and will not exclude the participant, unless specifically advised by the Investigator. * Participant has clinically relevant chronic or acute infectious illnesses or febrile infections within 2 weeks prior to the first scheduled study drug administration * Participant has gastrointestinal bleeding issues, e.g., Gastroesophageal Reflux Disease (GERD), Peptic Ulcer Disease (PUD) * Participant has a hospital admission or major surgery within 30 days prior to randomization. * Participant has a donation or blood collection of more than 1 unit (approximately 450 mL(milliliter)) of blood (or blood products) or acute loss of blood during the 30 days prior to randomization. * Participant has a history of alcohol abuse, prescription drug abuse, or illicit drug use within 6 months prior to Screening. * Participant meets eligibility criteria, but study is filled * Participant who is an investigational site staff member directly involved in the conduct of the study and his/her family members, site staff member otherwise supervised by the Investigator, or participant who is a Amzell B.V. employee directly involved in the conduct of the study

Design outcomes

Primary

MeasureTime frameDescription
Compare Exposure to DiclofenacDay 7Area under the curve (AUC) from time zero to 24 hours
Pharmacokinetic Parameter - CmaxDay 1Maximum plasma drug concentration (Cmax)

Secondary

MeasureTime frameDescription
Pharmacokinetic Parameter - KeDay 7Terminal disposition rate constant (Ke)
Pharmacokinetic Parameter - CminDay 7Minimum plasma drug concentration (Cmin)
Local TolerabilityDay 1 to Day 7Incidence of application site reactions according to the terminology of the International Contact Dermatitis Research Group
Pharmacokinetic Parameter - CavgDay 7Average plasma concentration (Cavg)
Pharmacokinetic Parameter - TmaxDay 7Time to reach maximum plasma concentration (Tmax)

Countries

United States

Participant flow

Participants by arm

ArmCount
AMZ001 Low/AMZ001 High/Diclofenac
Low/High/Diclofenac
12
Diclofenac/AMZ001 High/AMZ001 Low
Diclofenac/High/Low
12
Diclofenac/AMZ001 Low/AMZ001 High
Diclofenac/Low/High
12
AMZ001 High/AMZ001 Low/Diclofenac
High/Low/Diclofenac
13
AMZ001 Low/Diclofenac/AMZ001 High
Low/Diclofenac/High
13
AMZ001 High/Diclofenac/AMZ001 Low
High/Diclofenac/Low
12
Total74

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004FG005
First Crossover PeriodAdverse Event000001
First Crossover PeriodWithdrawal by Subject001000
Second Crossover PeriodWithdrawal by Subject000010
Third Crossover PeriodAdverse Event000010
Third Crossover Periodfailure to meet continuation criteria010000

Baseline characteristics

CharacteristicAMZ001 Low/AMZ001 High/DiclofenacDiclofenac/AMZ001 High/AMZ001 LowDiclofenac/AMZ001 Low/AMZ001 HighAMZ001 High/AMZ001 Low/DiclofenacAMZ001 Low/Diclofenac/AMZ001 HighAMZ001 High/Diclofenac/AMZ001 LowTotal
Age, Continuous44.0 years
STANDARD_DEVIATION 11.2
42.3 years
STANDARD_DEVIATION 14.69
36.4 years
STANDARD_DEVIATION 12.35
42.3 years
STANDARD_DEVIATION 10.6
39.8 years
STANDARD_DEVIATION 11.98
41.8 years
STANDARD_DEVIATION 13.47
41.1 years
STANDARD_DEVIATION 12.69
Ethnicity (NIH/OMB)
Hispanic or Latino
3 Participants3 Participants5 Participants8 Participants4 Participants4 Participants27 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
9 Participants9 Participants7 Participants5 Participants9 Participants8 Participants47 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants1 Participants0 Participants0 Participants1 Participants2 Participants
Race (NIH/OMB)
Black or African American
6 Participants6 Participants7 Participants5 Participants6 Participants7 Participants37 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
1 Participants0 Participants0 Participants1 Participants0 Participants1 Participants3 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
5 Participants6 Participants4 Participants7 Participants7 Participants3 Participants32 Participants
Sex: Female, Male
Female
7 Participants5 Participants5 Participants10 Participants7 Participants4 Participants38 Participants
Sex: Female, Male
Male
5 Participants7 Participants7 Participants3 Participants6 Participants8 Participants36 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 710 / 720 / 72
other
Total, other adverse events
7 / 718 / 725 / 72
serious
Total, serious adverse events
0 / 710 / 720 / 72

Outcome results

Primary

Compare Exposure to Diclofenac

Area under the curve (AUC) from time zero to 24 hours

Time frame: Day 7

Population: All subjects for which at least AUC0-τ or Cmax can be determined for the reference treatment (Diclofenac Sodium 1% Gel) along with at least one of Treatments AMZ001 Low dose or AMZ001 High dose are included in the analysis population.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
AMZ001 Low DoseCompare Exposure to Diclofenac141.5 ng*hr/mLGeometric Coefficient of Variation 89.8
AMZ001 High DoseCompare Exposure to Diclofenac166.1 ng*hr/mLGeometric Coefficient of Variation 90.3
Diclofenac Sodium 1% GelCompare Exposure to Diclofenac202.3 ng*hr/mLGeometric Coefficient of Variation 79.4
Primary

Pharmacokinetic Parameter - Cmax

Maximum plasma drug concentration (Cmax)

Time frame: Day 1

Population: All subjects for which at least AUC0-τ or Cmax can be determined for the reference treatment (Diclofenac Sodium 1% Gel) along with at least one of Treatments AMZ001 Low dose or AMZ001 High dose are included in the analysis population.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
AMZ001 Low DosePharmacokinetic Parameter - Cmax4.66 ng/mLGeometric Coefficient of Variation 122.4
AMZ001 High DosePharmacokinetic Parameter - Cmax6.22 ng/mLGeometric Coefficient of Variation 128.9
Diclofenac Sodium 1% GelPharmacokinetic Parameter - Cmax3.85 ng/mLGeometric Coefficient of Variation 122.2
Secondary

Local Tolerability

Incidence of application site reactions according to the terminology of the International Contact Dermatitis Research Group

Time frame: Day 1 to Day 7

Population: The Safety population includes randomized subjects who received at least one dose of AMZ001 Low dose or High dose or Diclofenac Sodium 1% Gel

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
AMZ001 Low DoseLocal Tolerabilitymild skin erythema1 Participants
AMZ001 Low DoseLocal Tolerabilitydoubtful skin reaction7 Participants
AMZ001 Low DoseLocal Tolerabilitystrong skin erythema1 Participants
AMZ001 Low DoseLocal Tolerabilityno skin reaction62 Participants
AMZ001 High DoseLocal Tolerabilitymild skin erythema4 Participants
AMZ001 High DoseLocal Tolerabilitystrong skin erythema0 Participants
AMZ001 High DoseLocal Tolerabilityno skin reaction61 Participants
AMZ001 High DoseLocal Tolerabilitydoubtful skin reaction7 Participants
Diclofenac Sodium 1% GelLocal Tolerabilitystrong skin erythema0 Participants
Diclofenac Sodium 1% GelLocal Tolerabilitymild skin erythema1 Participants
Diclofenac Sodium 1% GelLocal Tolerabilitydoubtful skin reaction7 Participants
Diclofenac Sodium 1% GelLocal Tolerabilityno skin reaction64 Participants
Secondary

Pharmacokinetic Parameter - Cavg

Average plasma concentration (Cavg)

Time frame: Day 7

Population: All subjects for which at least AUC0-τ or Cmax can be determined for the reference treatment (Diclofenac Sodium 1% Gel) along with at least one of Treatments AMZ001 Low dose or AMZ001 High dose are included in the analysis population.

ArmMeasureValue (GEOMETRIC_LEAST_SQUARES_MEAN)Dispersion
AMZ001 Low DosePharmacokinetic Parameter - Cavg5.90 ng/mLGeometric Coefficient of Variation 89.8
AMZ001 High DosePharmacokinetic Parameter - Cavg6.92 ng/mLGeometric Coefficient of Variation 90.3
Diclofenac Sodium 1% GelPharmacokinetic Parameter - Cavg8.43 ng/mLGeometric Coefficient of Variation 79.4
Secondary

Pharmacokinetic Parameter - Cavg

Average plasma concentration (Cavg)

Time frame: Day 1

Population: All subjects for which at least AUC0-τ or Cmax can be determined for the reference treatment (Diclofenac Sodium 1% Gel) along with at least one of Treatments AMZ001 Low dose or AMZ001 High dose are included in the analysis population.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
AMZ001 Low DosePharmacokinetic Parameter - Cavg2.59 ng/mLGeometric Coefficient of Variation 119.8
AMZ001 High DosePharmacokinetic Parameter - Cavg3.48 ng/mLGeometric Coefficient of Variation 124.8
Diclofenac Sodium 1% GelPharmacokinetic Parameter - Cavg1.60 ng/mLGeometric Coefficient of Variation 109.9
Secondary

Pharmacokinetic Parameter - Cmin

Minimum plasma drug concentration (Cmin)

Time frame: Day 7

Population: All subjects for which at least AUC0-τ or Cmax can be determined for the reference treatment (Diclofenac Sodium 1% Gel) along with at least one of Treatments AMZ001 Low dose or AMZ001 High dose are included in the analysis population.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
AMZ001 Low DosePharmacokinetic Parameter - Cmin3.09 ng/mLGeometric Coefficient of Variation 96.3
AMZ001 High DosePharmacokinetic Parameter - Cmin3.38 ng/mLGeometric Coefficient of Variation 90.1
Diclofenac Sodium 1% GelPharmacokinetic Parameter - Cmin5.03 ng/mLGeometric Coefficient of Variation 80.1
Secondary

Pharmacokinetic Parameter - Ke

Terminal disposition rate constant (Ke)

Time frame: Day 7

Population: All subjects for which at least AUC0-τ or Cmax can be determined for the reference treatment (Diclofenac Sodium 1% Gel) along with at least one of Treatments AMZ001 Low dose or AMZ001 High dose are included in the analysis population.~Analysis specified that Ke would be determined whenever the elimination phase after the Day 7 dose appeared to be adequately sampled based on a visual inspection of the log-linear plots.

ArmMeasureValue (GEOMETRIC_LEAST_SQUARES_MEAN)
AMZ001 Low DosePharmacokinetic Parameter - KeNA 1/hr
AMZ001 High DosePharmacokinetic Parameter - KeNA 1/hr
Diclofenac Sodium 1% GelPharmacokinetic Parameter - KeNA 1/hr
Secondary

Pharmacokinetic Parameter - Tmax

Time to reach maximum plasma concentration (Tmax)

Time frame: Day 7

Population: All subjects for which at least AUC0-τ or Cmax can be determined for the reference treatment (Diclofenac Sodium 1% Gel) along with at least one of Treatments AMZ001 Low dose or AMZ001 High dose are included in the analysis population.

ArmMeasureValue (MEDIAN)
AMZ001 Low DosePharmacokinetic Parameter - Tmax8 hr
AMZ001 High DosePharmacokinetic Parameter - Tmax10 hr
Diclofenac Sodium 1% GelPharmacokinetic Parameter - Tmax18 hr
Secondary

Pharmacokinetic Parameter - Tmax

Time to reach maximum plasma concentration

Time frame: Day 1

Population: All subjects for which at least AUC0-τ or Cmax can be determined for the reference treatment (Diclofenac Sodium 1% Gel) along with at least one of Treatments AMZ001 Low dose or AMZ001 High dose are included in the analysis population.

ArmMeasureValue (MEDIAN)
AMZ001 Low DosePharmacokinetic Parameter - Tmax14 hr
AMZ001 High DosePharmacokinetic Parameter - Tmax16 hr
Diclofenac Sodium 1% GelPharmacokinetic Parameter - Tmax20 hr

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