Efficacy in Ablative Fractional Laser Assisted Photodynamic Therapy According to Ablative Depth for Actinic Keratosis
试验速览
- 阶段
- 1 期
- 状态
- 已完成
- 入组人数
- 45
- 试验地点
- 1
- 主要终点
- Difference of the recurrence rates between 3 groups
研究概览
简要总结
Er:YAG ablative fractional laser-assisted photodynamic therapy (AFL-PDT) has shown significant benefit for the treatment of actinic keratosis(AK). Er:YAG ablative fractional laser ablates the epidermis and dermis without significant thermal injury, creating microscopic ablation zones (MAZ) in the portion of the skin that the laser is applied to. The formed MAZ depends on the laser parameters such as laser depth, laser density and laser passes, which affect the treatment outcome.
详细描述
The investigators aimed to investigate whether the use of increased laser ablative depth affects the efficacy, side effects, cosmetic outcomes, and PPIX accumulation of AFL-PDT for facial AK in a randomized clinical trial.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Factorial
- 主要目的
- Treatment
- 盲法
- Triple (Participant, Investigator, Outcomes Assessor)
入排标准
- 年龄范围
- 60 Years 至 85 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Korean patients aged ≥ 18 years who had biopsy-confirmed Actinic keratosis lesions
排除标准
- •photosensitivity disorder patients
- •lactating or pregnant women
- •patients with porphyria or a known allergy to any of the constituents of the MAL cream and lidocaine
- •patients with systemic disease, history of malignant melanoma, tendency of melasma development or keloid formation, any AK treatment of the area in the previous 4 weeks, or any conditions associated with a risk of poor protocol compliance; and patients on immunosuppressive treatment
研究组 & 干预措施
150μm-AFL-PDT
干预措施: lidocaine/prilocaine (5%) application (Drug)
150μm-AFL-PDT
干预措施: MAL application (Drug)
150μm-AFL-PDT
干预措施: Measurements of the fluorescence intensity (Other)
150μm-AFL-PDT
干预措施: irradiation with red light-emitting diode lamp (Device)
350μm-AFL-PDT
干预措施: lidocaine/prilocaine (5%) application (Drug)
350μm-AFL-PDT
干预措施: MAL application (Drug)
350μm-AFL-PDT
干预措施: Measurements of the fluorescence intensity (Other)
350μm-AFL-PDT
干预措施: irradiation with red light-emitting diode lamp (Device)
500μm-AFL-PDT
干预措施: lidocaine/prilocaine (5%) application (Drug)
500μm-AFL-PDT
干预措施: MAL application (Drug)
500μm-AFL-PDT
干预措施: Measurements of the fluorescence intensity (Other)
500μm-AFL-PDT
干预措施: irradiation with red light-emitting diode lamp (Device)
结局指标
主要结局
Difference of the recurrence rates between 3 groups
时间窗: Recurrence rates were evaluated respectively at 12 months after treatment
In all cases of complete response, the patients were reviewed at 12 months to check for recurrence. Recurrence was assessed by inspection, dermoscopy, photography, palpation, and histologic findings. For the histopathologic evaluation of treatment response, at the 12-month follow-up visit, a 3-mm punch biopsy of the treated AK lesion was performed in all cases of clinically incomplete response.
Differences of short-term complete response rates between 3 groups
时间窗: Short-term complete response rates were evaluated at 3 months after treatment
Lesion responses were classified as either a complete response (complete disappearance of the lesion) or a noncomplete response (incomplete disappearance)
Differences of the fluorescence intensity between 3 groups
时间窗: After 3 hours of application with MAL, fluorescence intensity imaging was assessed 10 minutes before illumination.
After 3 hours of application with MAL, Fluorescence imaging analysis was performed on treatment area with ultraviolet examination light (model 31602,356 nm; Burton Medical Products Crop.) at 10 cm height above the base of each lesion. The red fluorescence was separated and extracted by Matlab program and then used to measure the amount of 633 nm fluorescence of protoporphyrin IX.
Differences of long-term complete response rates between 3 groups
时间窗: Long-term complete response rates were evaluated at 12 months
In all cases of complete response, the patients were reviewed at 12 months to check for recurrence. Recurrence was assessed by inspection, dermoscopy, photography, palpation, and histologic findings. For the histopathologic evaluation of treatment response, at the 12-month follow-up visit, a 3-mm punch biopsy of the treated AK lesion was performed in all cases of clinically incomplete response.
次要结局
- Difference of adverse events (erythema, post-inflammatory hyperpigmentation, edema, itching, oozing, bleeding) rates between 3 groups(Within 12 months after each treatment)
- Differences of cosmetic outcomes between 3 groups(The overall cosmetic outcome was assessed 12 months after treatment)
研究者
Song Ki-Hoon
Professor and chairman, Department of dermatology Dong-A University, College of medicine
Dong-A University