View clinical trials related to Keratosis.
Filter by:This is a randomized, single-center, controlled, within-subject comparison study assessing the sensitization potential of the investigational product, LEO 43204 gel under open conditions in healthy volunteers. LEO 43204 Gel and Vehicle Gel will be applied to adjacent sites on the infrascapular area of the back. Evaluation of dermal reactions at the application sites will be assessed clinically using a visual scale that rates the degree of erythema, edema and other signs of cutaneous irritation. Following induction, subjects will have a 10 to 14-day Rest Phase, after which they will enter the Challenge Phase, which consists of one 48-hour application to a naive site on the opposite side of the back. Observations at the naive site during Challenge and the patterns of reactivity during the Induction Phase will provide a basis for an interpretation of contact sensitization. A total of 10 applications will be made over a period of approximately 6-8 weeks.
Photodynamic therapy technique (PDT) is a conventional technique which is performed applying the product under occlusion lesions, let it incubate for 3 hours and then exposed skin to a light source, usually red. The conclusions of efficacy, tolerance and satisfaction that today are known about PDT with MAL, but not with ALA, which is a new photosensitizer indicated for Actinic Keratoses. The pharmaceutical form of ALA is a gel, which gives a hypothetical better penetration and consequently it is more effectively.
This pilot study will try to minimize the pain during exposure to a new red light source (RhodoLED®, Biofrontera Bioscience GmbH, Leverkusen, Germany) used for PDT without compromising its effect on AKs. The study design will have an open and prospective, two-armed, split-face design. Participants with AK lesions distributed symmetrically on the scalp, forehead, cheeks, torso, back, arms and/or dorsal parts of the hands are eligible for inclusion. The purpose is to investigate if a modified irradiation protocol can lower the pain while having the same effect on AK clearance rates as compared to the standard PDT irradiation protocol. Before any study-related procedures are performed, the participants will be thoroughly informed about the study and will be given the opportunity to ask questions. The participants will thereafter sign and date the informed consent form. This constitutes as visit 0. On visit 1, a randomization to either the standard or the modified irradiation protocol will be performed on one side of the face/body and the other irradiation protocol will then be applied on the other side of the face/body. The participants should have AKs on two comparable sites, i.e. two cheeks, arms or dorsal parts of the hands. One side will be randomized to receive PDT with BF200-ALA and irradiation with the RhodoLED® lamp and the other side will receive BF200-ALA and the Aktilite CL-128 lamp (PhotoCure ASA, Oslo, Norway), which is the traditional lamp used at our department as mentioned above. The treatment will be given at visit 1. During the treatment, the participants will be asked continuously, every third minute, to estimate the pain on each treatment side using the visual analogue scale, VAS, (where 0 is no pain and 10 is the worst pain imaginable). At the end of the treatment, the participants will also be asked to summarize the treatment as a whole on the VAS-scale. After visit 1, the participants will fill in a follow-up diary form with questions regarding adverse effects (AEs) during the hours and days after the treatment. The efficacy of the treatment will also be assessed at a follow-up (FU) visit, visit 2. The investigators are aiming for a non-inferior analysis, i.e. the new modified irradiation protocol should be at least as good as the standard irradiation protocol. The randomization is blinded for the investigator at the FU visit to minimize the possibility of favoring one irradiation protocol.
The purpose of this study is to determine the viability of microneedle lesion preparation (MN) to enhance treatment benefit when performed prior to ALA PDT to an actinic keratosis (AK) field on the face.
The purpose of this study is to evaluate the potential for systemic exposure of aminolevulinic acid (ALA) and protoporphyrin IX (PpIX) when applied topically under occlusion, in a maximal use setting in patients with multiple actinic keratoses (AK) involving the upper extremities.
This is an investigator initiated, two center, randomized, evaluator-blinded, bilateral (right vs. left) study of photodynamic therapy in subjects with facial actinic keratoses. Subject's face will be randomized to receive one of four treatments: Treatment 1, Treatment 2, Treatment 3 or Treatment 4. Treatment 1 will include microneedling performed prior to ALA application to their right face and ALA application only to the left face 60 minutes prior to BLUE light treatment for 1000 seconds (16 minutes 40 seconds). Treatment 2 will include microneedling performed prior to ALA application to their left face and ALA application only to the right side of their face 60 minutes prior to BLUE light treatment for 1000 seconds (16 minutes 40 seconds). Treatment 3 will include microneedling performed prior to ALA application to their right face and ALA application only to the left side of their face 30 minutes prior to BLUE light treatment for 1000 seconds (16 minutes 40 seconds). Treatment 4 will include microneedling performed prior to ALA application to their left face and ALA application only to the right side of their face 30 minutes prior to BLUE light treatment for 1000 seconds (16 minutes 40 seconds). The face is defined as the surface of the skin encompassing the forehead to the hair line and tops of the eyebrows, the entire nasal dorsum, the cheeks (bounded by the orbital rim, the anterior border of the ear, the jawline, the nose and the chin), the upper lip (not including the vermilion border) and the chin (bounded by the lower edge of the vermilion border, the cheek junction and the jawline). The treatment areas will be not be occluded. A line will be drawn with a marker that intersects the nose, forehead, upper lip and chin in the midline. The left face is defined as the face to the left of this line and the right face is defined as the face to the right of this line. Posttreatment follow-up visits will be scheduled to occur 48 hours after the treatment and at 1, 3 and 6 months after the treatment. A blinded evaluator who will remain blinded with respect to the randomization will conduct grading of the subject's actinic keratoses and photodamage. Tolerability of treatment will be assessed by evaluations of the local skin response (erythema, edema, etc.) and will be conducted by an unblinded evaluator. Safety will be evaluated by adverse events and local skin responses reported during the study
This study is to evaluate the efficacy and safety of a generic formulation of fluorouracil 0.5% cream against the brand product (Carac) in participants with actinic keratoses.
To compare the efficacy and safety profiles of Teva's Diclofenac Sodium Gel, 5% (test product) to Solaraze® (diclofenac sodium) Gel, 3% (reference product) to demonstrate the clinical equivalence and to show that the efficacy of the 2 active formulations is superior to that of vehicle in treating subjects with actinic keratosis (AK) on the face or bald scalp.
This is a Phase I, single-centre, open label, within-subject comparison trial to explore the biological effects of LEO 43204 Gel, 0.037%, applied once daily for 3 consecutive days in patients with actinic keratosis on the upper extremity. The treatment area for each patient will be as defined as a contiguous area of 250 cm2 of skin on the upper extremity (including the dorsum manus) that contains a minimum of 5 AK lesions. Additionally there must be at least one AK lesion located in a non-treated area on the contralateral arm. All eligible subjects will receive LEO 43204 Gel, 0.037%, on the treatment area on Days 1, 2 and 3. Study medication application will be (sub)investigator applied. A total of 30 patients will be enrolled into this study (n=15 in each of the two groups). Patients will be divided into two groups with different biopsy schedules.
The aim of this study is to investigate how varying incubation periods of topical aminolevulinic acid after pretreatment with microneedle application can facilitate the penetration and efficacy of photodynamic therapy.