A phase 2, randomized, double-blind, placebo-controlled, parallel-group, dose-ranging study to investigate the efficacy and safety of 4 dose regimens of oral albaconazole in subjects with distal subungual onychomycosis.
- Conditions
- Distal subungual onychomycosisMedDRA version: 8.1Level: PTClassification code 10030338Term: OnychomycosisMedDRA version: 9.1Level: LLTClassification code 10030338Term: Onychomycosis
- Registration Number
- EUCTR2008-002418-23-IS
- Lead Sponsor
- Stiefel Laboratories Inc.
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- ot Recruiting
- Sex
- All
- Target Recruitment
- 550
1.Subject is male or female aged 18 to 75 years, inclusive, at time of consent.
2.Subject is diagnosed with distal subungual onychomycosis of the toenails that affects at least one great toe (target toenail). The target toenail must have all the following features:
a) At least 25% involvement.
b) No less than 2 mm of clear unaffected toenail at the proximal end.
c) A direct microscopic examination with potassium hydroxide (KOH)/calcofluor that is positive for hyphae associated with dermatophytes.
d) A positive dermatophyte culture (one repeat assay will be allowed for positive culture identification if the first one is negative).
3.Subject is capable of understanding the study requirements and is willing to provide signed and dated written voluntary informed consent (and any local or national authorization requirements) before any protocol-specific procedures are performed.
4.Subject is able to complete the study, comply with study instructions, and take study product orally.
5.Sexually active non-lactating females of childbearing potential participating in the study must agree to use a medically acceptable method of contraception while receiving protocol-assigned product and up to the first menses 60 days following the last dose of study product. A woman of childbearing potential is defined as one who is biologically capable of becoming pregnant; including perimenopausal women who are less than 2 years from their last menses. Contraceptive methods include:
•Hormonal contraception, including oral, injectable, or implantable methods started at least 2 months prior to screening. If hormonal contraception was started less than 2 months prior to screening, then a form of non-hormonal contraception should be added until the third continuous month of hormonal contraception has been completed.
•Two forms of non-hormonal contraception, including intrauterine devices or properly used barrier methods (eg, male or female condoms, diaphragm, or cervical cap). Subjects with surgical sterilization, including tubal ligation or partner’s vasectomy, must use a form of non-hormonal contraception. A barrier method or sterilization plus spermatocide is acceptable.
Women who are not currently sexually active must agree to use a medically accepted method of contraception should she become sexually active while participating in the study.
6.Women of childbearing potential must have a negative pregnancy test at enrollment.
7.Subject has screening laboratory parameters within the normal ranges unless considered to be not clinically relevant by the principal investigator. Subjects will not be enrolled if they have alanine aminotransferase (ALT), aspartate aminotransferase (AST), or total bilirubin values greater than 1.5 times the upper normal limit at screening.
8.Subject has screening and baseline electrocardiogram (ECG) within the normal ranges unless considered to be not clinically relevant by the principal investigator. Subjects will not be enrolled if they have a QT interval with Fridericia’s correction (QTcF) greater than 450 ms
Are the trial subjects under 18? no
Number of subjects for this age range:
F.1.2 Adults (18-64 years) yes
F.1.2.1 Number of subjects for this age range
F.1.3 Elderly (>=65 years) yes
F.1.3.1 Number of subjects for this age range
Subjects with any of the following conditions or characteristics will be excluded from study enrollment (ie, will not receive study product):
1.Subject has one or more of the following conditions on the target toenail:
•Proximal subungual onychomycosis
•White superficial onychomycosis
•Dermatophytoma
•Exclusively lateral disease
2.Subject has received an investigational drug within 4 weeks of the first dose of study product, or is scheduled to receive an investigational drug other than the study product during the study.
3.Subject has received investigational drug for the systemic treatment of onychomycosis of the toenails within 6 months prior to the first dose of study product.
4.Subject is receiving any drugs that are known substrates of the 3A4 isozyme of cytochrome P450 (CYP3A4) with QT prolongation potential or any of the concomitant medications listed under prohibited medication section.
5.Subject has a history of known or suspected intolerance to albaconazole or the formulation excipients, or to azole antifungal drugs in general.
6.Subject has previously participated in a clinical study with albaconazole.
7.Subject is not prepared to give up use of any nail cosmetic products for the duration of the study.
8.Subject has any known immunodeficiency or history of malignancy in the last 4 years, excluding nonmelanoma skin cancer.
9.Subject has any known liver disease or a history of liver toxicity with other drugs.
10.Subject is currently suffering from any disease or condition, including abnormal laboratory tests, and/or is currently using medication which in the opinion of the investigator may affect the evaluation of the study product or place the subject at undue risk.
11.Subject has psoriasis, lichen planus, or other abnormalities that could result in a clinically abnormal toenail.
12.Subject has a history of any condition that could possibly affect absorption of drug (eg, gastrectomy), or uncontrolled diabetes, or clinically significant peripheral vascular disease or peripheral circulatory impairment, or subject has had any major illness within 30 days prior to the screening examination.
13.Subject has a history of drug, prescription medicine, or alcohol abuse within the past 2 years.
14.Female subjects who are pregnant, trying to become pregnant, or lactating.
15.Employees of the investigator/clinical research organization (CRO) or Stiefel Laboratories, Inc., or an immediate family member (partner, offspring, parents, siblings or sibling’s offspring) of an employee.
Study & Design
- Study Type
- Interventional clinical trial of medicinal product
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Main Objective: To assess the efficacy of 4 dose regimens of albaconazole for the treatment of distal subungual onychomycosis of the great toenail.<br>;Secondary Objective: To assess the safety of 4 albaconazole dose regimens in subjects with distal subungual onychomycosis of the great toenail. <br><br>To assess the nail plate and plasma concentration profile of albaconazole and its metabolite in subjects with distal subungual onychomycosis of the great toenail.<br><br>To evaluate the efficacy of each dose regimen for the treatment of any concurrent onychomycosis of the fingernail.<br>;Primary end point(s): the proportion of subjects who achieve effective treatment (defined as mycological cure and clear or almost clear nail) at week 52.
- Secondary Outcome Measures
Name Time Method