The ratio of male and female patients was comparable in the entire study population and there was no significant gender bias between 2.5% M605108 group and M605108 vehicle group (hereinafter, vehicle group). The overall mean age was 20.7 years (20.8 years for 2.5% M605108 group and 20.7 years for vehicle group) and was similar in the groups. The age distribution was similar in the groups with patients <- 30 years accounting for >- 90% (91.7% for 2.5% M605108 group and 91.2% for vehicle group). The total lesion counts (sum of inflammatory and non-inflammatory lesion counts), and the mean of lesion and non-inflammatory lesion counts at baseline was 61.1, 22.5, and 38.6 for the 2.5% M605108 group and 58.9, 21.6, and 37.4 for the vehicle group, respectively, showing no differences between the groups.
A total of 222 patients were randomly assigned to the 2.5% M605108 group (109 patients) or the vehicle group (113 patients), and all received the study drug. Of the 222 patients, 5 (2 in the 2.5% M605108 group, 3 in the vehicle group) discontinued the study and 217 completed the study (107 in the 2.5% M605108 group, 110 in the vehicle group). All patients who received the study drug were included in the full analysis set and the safety analysis set.
The incidence of adverse events was similar between the 2.5% M605108 group and the vehicle group (29.4% versus 23.9%). Of these, the incidence of drug-related adverse events was slightly higher in the 2.5% M605108 group compared with the vehicle group (11.9% versus 6.2%). Severity was mild in all but moderate in 2.8% of the 2.5% M605108 group and 1.8% of the vehicle group. No deaths occurred, and other serious adverse event was gastroenteritis in 1 patient (0.9%) in the 2.5% M605108 group, which was considered not related to the study drug. The incidence of adverse events leading to study drug discontinuation was 1.8% only in the 2.5% M605108 group. The incidence of adverse events corresponding to skin irritation was higher in the 2.5% M605108 group (18.3%) compared with the vehicle group (9.7%). Skin safety scores (scaling, erythema) shows that the majority of patients had no scaling (>- 95% patients) and no erythema (>- 90% patients) at each assessment time point with no clear difference between groups. No clinically significant changes were observed in laboratory values.
The least squares mean of percentage reduction in total lesion counts at Week 12, the primary endpoint, was 63.02% in the 2.5% M605108 group and 26.54% in the vehicle group. The difference between the groups (two-sided 95% confidence intervals) were 36.48% (26.28% to 46.68%), showing a significant reduction in total lesion counts in the 2.5% M605108 group than in the vehicle group. A reduction in the total lesion counts was observed from an early stage, with significant difference between the groups starting 2 weeks after treatment.
The percentage reduction in inflammatory and non-inflammatory total lesion counts at Week 12, one of the secondary endpoints, indicated significant differences between the 2.5% M605108 and the vehicle groups, supporting the primary endpoint results.
This study demonstrated that 2.5% M605108 once-daily for 12 weeks was efficacious in the treatment of patients with acne vulgaris. Moreover, the regimen was considered well tolerated because the incidence of adverse events leading to study drug discontinuation was low and the severity of most adverse events was mild.
A phase III, randomized, double-blind, placebo-controlled, parallel-group, multi-center study to evaluate the efficacy and safety of M605108 in patients with acne vulgaris
A phase III, randomized, double-blind, placebo-controlled, parallel-group, multi-center study to evaluate the efficacy and safety of M605108 in patients with acne vulgaris
-Patients with concurrent presense of serious cardiac, hepatic, renal, plumonary, hematologic, or other diseases considered inappropriate for paticipation in the clinical study
-Patients with a history of hypersensitivity to investigational drug ingredients
-Pregnant or lactating women
Patients apply a sufficient quantity of benzoyl peroxide to cover the entire face (except the lips and around the eyes) once daily at night after they washed and dried their faces.
主たる評価項目 / Primary Outcome(s)
12週後の総皮疹数の減少率
Percentage change in total lesion count from baseline to week 12
副次的な評価項目 / Secondary Outcome(s)
12週後の炎症性皮疹数、非炎症性皮疹数の減少率
Percentage change in inflammatory lesion and non-inflammatory lesion counts from baseline to week 12
(2)試験等に用いる医薬品等の概要
医薬品、医療機器、再生医療等製品の別
医薬品
医薬品医療機器等法における未承認、適応外、承認内の別
未承認
一般名称等
医薬品
一般名称
Benzoyl Peroxide
販売名(海外製品の場合は国名も記載すること)
なし
承認番号
なし
3 試験等の実施状況の確認に関する事項
(1)監査の実施予定
(2)試験等の進捗状況
試験等の進捗状況
進捗状況
/ Recruitment status
研究終了
Complete
4 試験等の対象者に健康被害が生じた場合の補償及び医療の提供に関する事項
5 依頼者等に関する事項
(1)依頼者等に関する事項
依頼者等の名称
マルホ株式会社
Primary Sponsor
Maruho co.,Ltd
研究資金提供の有無
なし
(2)依頼者以外の企業からの研究資金等の提供
研究資金等の提供組織の有無
なし
6 IRBの名称等
IRBの名称 / Name of IRB
医療法人財団同仁記念会 明和病院 治験審査委員会
Doujin Memorial Medical Foundation, Meiwa Hospital IRB