Therapeutic Equivalence of Fluorouracil Cream, 5% Compared With Fluorouracil 5% Topical Cream of MylanPharmaceuticals Inc., U.S.A in the Treatment of Actinic Keratosis

NCT ID: NCT05078827

Last Updated: 2023-03-14

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE3
• Total Enrollment: 458 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2022-03-01
• Study Completion Date: 2022-12-01

Brief Summary

Fluorouracil is recommended for the topical treatment of multiple actinic or solar keratoses. In the 5% strength, it is also useful in the treatment of superficial basal cell carcinomas when conventional methods are impractical, such as with multiple lesions or difficult treatment sites.

Detailed Description

There is evidence that the metabolism of Fluorouracil in the anabolic pathway blocks the methylation reaction of deoxyuridylic acid to thymidylic acid. In this manner, Fluorouracil interferes with the synthesis of deoxyribonucleic acid (DNA) and to a lesser extent inhibits the formation of ribonucleic acid (RNA). As DNA and RNA are essential for cell division and growth, the effect of Fluorouracil may be to create a thymine deficiency, which, provokes unbalanced growth and death of the cell. The effects of DNA and RNA deprivation are most marked on those cells that grow more rapidly and take up Fluorouracil at a more rapid rate. The catabolic metabolism of Fluorouracil results in degradation products (e.g., CO2, urea, α-fluoro-β-alanine), which are inactive.

Systemic absorption studies of topically applied Fluorouracil have been performed on patients with actinic keratoses using tracer amounts of 14C-labeled Fluorouracil added to a 5% preparation. All patients had been receiving nonlabeled Fluorouracil until the peak of the inflammatory reaction occurred (2 to 3 weeks), ensuring that the time of maximum absorption was used for measurement. One gram of labeled preparation was applied to the entire face and neck and left in place for 12 hours. Urine samples were collected. At the end of 3 days, the total recovery ranged between 0.48% and 0.94%, with an average of 0.76%, indicating that approximately 5.98% of the topical dose was absorbed systemically. If applied twice daily, this would indicate systemic absorption of topical Fluorouracil to be in the range of 5 to 6 mg per daily dose of 100 mg. In an additional study, negligible amounts of labeled material were found in plasma, urine, and expired CO2 after 3 days of treatment with topically applied 14C-labeled Fluorouracil.

Conditions

Actinic Keratoses

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: QUADRUPLE

Study Groups

Comparator Arm

Reference Product (B): Fluorouracil 5% Topical Cream of Mylan Pharmaceuticals Inc., Morgantown, WV 26505 U.S.A.

Group Type: ACTIVE_COMPARATOR

Reference Product (B): Fluorouracil 5% Topical Cream of Mylan Pharmaceuticals Inc., Morgantown, WV 26505 U.S.A.

Intervention Type: DRUG

Apply cream twice daily in an amount sufficient to cover the lesions. Fluorouracil should be applied preferably with a nonmetal applicator or suitable glove. If Fluorouracil is applied with the fingers, the hands should be washed immediately afterward.

Arms and Interventions

Test Product (A): Fluorouracil Cream, 5% of Encube Ethicals Pvt. Ltd., India

Group Type: EXPERIMENTAL

Test Product (A): Fluorouracil Cream, 5% topical cream

Intervention Type: DRUG

Apply cream twice daily in an amount sufficient to cover the lesions. Fluorouracil should be applied preferably with a nonmetal applicator or suitable glove. If Fluorouracil is applied with the fingers, the hands should be washed immediately afterward.

Placebo Arm

Placebo Product (C): Test vehicle cream for fluorouracil 5% of Encube Ethicals Pvt. Ltd., India

Group Type: PLACEBO_COMPARATOR

Placebo Product (C): Test vehicle cream for fluorouracil 5% of Encube Ethicals Pvt. Ltd., India

Intervention Type: DRUG

Apply cream twice daily in an amount sufficient to cover the lesions. Fluorouracil should be applied preferably with a nonmetal applicator or suitable glove. If Fluorouracil is applied with the fingers, the hands should be washed immediately afterward.

Interventions

Test Product (A): Fluorouracil Cream, 5% topical cream

Apply cream twice daily in an amount sufficient to cover the lesions. Fluorouracil should be applied preferably with a nonmetal applicator or suitable glove. If Fluorouracil is applied with the fingers, the hands should be washed immediately afterward.

Intervention Type: DRUG

Reference Product (B): Fluorouracil 5% Topical Cream of Mylan Pharmaceuticals Inc., Morgantown, WV 26505 U.S.A.

Apply cream twice daily in an amount sufficient to cover the lesions. Fluorouracil should be applied preferably with a nonmetal applicator or suitable glove. If Fluorouracil is applied with the fingers, the hands should be washed immediately afterward.

Intervention Type: DRUG

Placebo Product (C): Test vehicle cream for fluorouracil 5% of Encube Ethicals Pvt. Ltd., India

Apply cream twice daily in an amount sufficient to cover the lesions. Fluorouracil should be applied preferably with a nonmetal applicator or suitable glove. If Fluorouracil is applied with the fingers, the hands should be washed immediately afterward.

Intervention Type: DRUG

Other Intervention Names

Experimental; Active Comparator; Placebo Comparator

Eligibility Criteria

Inclusion Criteria

• Willing and able to provide voluntary informed consent and follow the protocol requirements
• Males or females at least 18 years of age
• Subjects with at least five (5) and no more than ten (10) clinically typical, visible, discrete, AK lesions, each at least 4 mm in diameter on the face or bald scalp. In this interpretation, if the total number of lesions on the face and bald scalp exceeds 10 and there are either 5-10 lesions on the face or 5-10 lesions on the bald scalp then select the designated treatment area that has 5-10 lesions (i.e., face or bald scalp)
• Skin pigmentation (Fitzpatrick skin type I, II, and III) that will allow differentiation of erythema assessment
• Females of childbearing potential must not be pregnant or lactating at Visit 1 (as confirmed by a negative urine pregnancy test with a sensitivity of less than 50 mIU/mL or equivalent units of human chorionic gonadotropin)
• Women of childbearing potential must agree to the use of a reliable method of contraception (e.g., total abstinence, intrauterine device, a double barrier method, oral, transdermal, injected, or implanted nonhormonal or hormonal contraceptive) throughout the study. Female patients using hormonal contraceptives should have been on the same product/dosing regimen for at least 28 days before Visit 1 and should not change this regimen during the study. A sterile sexual partner is not considered an adequate form of birth control.

Exclusion Criteria

• Known hypersensitivity or allergy to Fluorouracil or any of the excipients in the Test, Reference or Placebo products
• Presence of atopic dermatitis, basal cell carcinoma, eczema, psoriasis, rosacea, squamous cell carcinoma, or other possible confounding skin conditions on the face or bald scalp
• Use within 6 months before Visit 1 on the face or bald scalp of 1) chemical peel, 2) dermabrasion, 3) laser abrasion, 4) PUVA (psoralen plus ultraviolet A) therapy, or 5) ultraviolet B therapy
• Use within 1 month before Visit 1 on the face or scalp of 1) cryo destruction or chemo destruction, 2) curettage, 3) photodynamic therapy, 4) surgical excision, 5) topical 5-fluorouracil, 6) topical corticosteroids 7) topical diclofenac, 8) topical imiquimod, 9) topical retinoids, or 10) other treatments for AK including glycolic acid or over-the-counter products containing retinol, alpha or beta hydroxy acids
• Use within 1 month before Visit 1 of 1) immunomodulators or immunosuppressive therapies, 2) interferon, 3) oral or injectable corticosteroids, or 4) cytotoxic drugs
• Known dihydropyrimidine dehydrogenase (DPD) enzyme deficiency
• Inability to understand the requirements of the study and the relative information or are unable or not willing to comply with the study protocol
• Employees of the Investigator or research center or their immediate family members
• Patients who have participated in this study previously
• Patient lived in the same household as currently enrolled subject

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

CBCC Global Research

NETWORK

Sponsor Role: collaborator

Encube Ethicals Pvt. Ltd.

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

CBCC Global Research Site 005

Bakersfield, California, United States

CBCC Global Research Site 006

Cerritos, California, United States

CBCC Global Research Site 004

Lauderdale Lakes, Florida, United States

CBCC Global Research Site 001

Miami, Florida, United States

CBCC Global Research Site 002

Miami, Florida, United States

CBCC Global Research Site 003

Miramar, Florida, United States

CBCC Global Research Site 007

Sugarloaf, Pennsylvania, United States

Countries

United States

Other Identifiers

CBCC/2021/012

Identifier Type: -

Identifier Source: org_study_id