Phase IV Study to Gather More Information About the Safety of ACZONE Gel, 5% in Treating Subjects With Acne Who Have G6PD Deficiency
|ClinicalTrials.gov Identifier: NCT00243542|
Recruitment Status : Completed
First Posted : October 24, 2005
Last Update Posted : May 30, 2011
The purpose of this study is to gather more information about the safety of ACZONE Gel, 5% in treating subjects with acne who have certain blood disorders.
ACZONE Gel, 5% is a prescription skin use (topical) medicine used to help treat acne in people 12 years and older. ACZONE Gel, 5% has been studied in approximately 4000 people and was shown to reduce the number of pimples and improve acne.
The active drug ingredient in ACZONE Gel, 5% is dapsone. People with blood disorders called "G6PD deficiency", "methemoglobin reductase deficiency", and "hemoglobin M" have a higher chance of side effects with dapsone.
G6PD is short for "glucose-6-phosphate dehydrogenase". It is an enzyme found in red blood cells, which carry oxygen to all parts of the body. G6PD helps the red blood cells to function normally. Some people have less G6PD in their red blood cells than the average person. This is called G6PD deficiency.
Two treatments - ACZONE Gel, 5% and placebo - will be studied for comparison.
|Condition or disease||Intervention/treatment||Phase|
|Acne Vulgaris||Drug: ACZONE Gel, 5% Drug: Vehicle||Phase 4|
- To compare the safety profile and risk of hemolysis of ACZONE Gel, 5% to that of the vehicle after 12 weeks each of twice daily applications in acne vulgaris subjects with glucose-6-phosphate-dehydrogenase (G6PD) deficiency.
- To determine the systemic levels of plasma dapsone and N-acetyl dapsone during treatment with ACZONE Gel, 5%.
Approximately 60 male and female subjects
All subjects in the study will receive ACZONE Gel, 5% and vehicle in 1 of 2 sequences; each for a 12-week period.
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||64 participants|
|Intervention Model:||Crossover Assignment|
|Official Title:||ACZ ACN 01. A Phase 4, Double-Blind, Multicenter, Randomized, Vehicle-Controlled, Cross-Over Study to Further Evaluate the Risk of Hematological Adverse Events in G6PD-Deficient Subjects With Acne Vulgaris Treated With ACZONE™ (Dapsone) Gel, 5%.|
|Study Start Date :||November 2005|
|Primary Completion Date :||October 2006|
|Study Completion Date :||October 2006|
- The within-subject between treatment period differences in change from baseline to the 2nd week of each treatment period and change from baseline to the end of each treatment period will be summarized based upon various lab parameters.
- The safety evaluable data set will be used, and each variable will be summarized using descriptive statistics.
- Analyses of clinical lab values, AEs, vitals, and concomitant meds will be performed on all subjects who received treatment.
- Acne Lesions: Tabular summaries of total lesion counts will be provided by appropriate descriptive statistics.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00243542
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|Study Director:||Steven Garrett, MS, DDS||QLT USA, Inc.|