Reduced Side-Effects Of Photodynamic Therapy For The Treatment Of Moderate To Severe Acne (i-PDT) (i-PDT)
Acne Vulgaris
About this trial
This is an interventional treatment trial for Acne Vulgaris focused on measuring Acne vulgaris, Photodynamic Therapy, Side-effects, Pain
Eligibility Criteria
Inclusion criteria
- Subjects with ages between 14 and 50 years, male or female.
- Subjects with severe acne lesions (one or more nodules or cysts present) on their backs or face
Presence of moderate acne on the back and/or face that has been recalcitrant to previous treatments. Recalcitrant acne is acne with no or mild/temporary (less than 3 months) improvement after using:
- Accutane® for at least one completed treatment cycle, and/or
- Oral antibiotic for ≥ 3 months; and/or
- Topical prescription retinoids (tretinoin - retinoic acid, adapalene, tazarotene or other derivatives) for ≥ 3 months, and/or
- Topical benzoyl peroxide 2.5% or higher concentrations for ≥ 3 months
- Hormonal treatments** for ≥ 3 months.
- Willingness to participate in the study
- Willingness to receive ALA-PDT treatment
- Informed consent agreement signed by the subject
- Willingness to follow the treatment schedule and post treatment care requirements
- Willingness to not use topical or systemic (oral) anti-acne medications including medicated shampoo or soap during the study period.
Exclusion criteria
Subjects receiving concurrent oral retinoids or antibiotics
** Subjects with chronic use of antibiotics may be included if proven that its use has not changed the severity of their acne. AND
*** Chronic use of antibiotic is considered ≥ 2 years of continuous use.
- Scarring or infection of the area to be treated
- Known photosensitivity
- Presence of suntan in the area to be treated
- Subjects who have taken medication known to induce photosensitivity in the previous 3 months
- Subjects who have had prior oral retinoid (Accutane®) use within 6 months of entering the study
- Prior oral antibiotic use within 1 month of entering the study (see exclusion #1)
- Topical antibiotic or other topical anti-acne treatments use within 2 weeks of entering the study
- Known anticoagulation or thromboembolic condition
- Subjects who are immunosuppressed
- Subject is unable to comply with treatment, home care or follow-up visits
- Subject is pregnant or breast feeding
- Subject has a history of being on photosensitive medications (thiazides [used to treat high blood pressure], tetracyclines, fluoroquinolones griseofulvin or sulfonamides [used to treat infections], sulfonylureas [used to treat diabetes], calcium channel blockers [used to treat hypertension]. phenothiazines [used to treat serious emotional problems]).
- Known skin sensitivity to blue light
- Porphyria (a disorder of the metabolism that can lead to sensitivity to light)
- Allergies to chemicals called porphyrins
- Subjects who started hormonal treatment (for medical conditions or birth control) within less than 3 months.
Sites / Locations
- Massachusetts General Hospital
Arms of the Study
Arm 1
Arm 2
Arm 3
Arm 4
Arm 5
No Intervention
Active Comparator
Experimental
Active Comparator
Active Comparator
Control
ALA-PDT
i-PDT
Red Light only
Blue light only
No drug, no treatment
Drug- topical 20% Aminolevulinic acid - ALA followed by red light irradiation - conventional photodynamic therapy -PDT
Drug - topical 20% Aminolevulinic acid - followed by inhibitory light during incubation time, then red light for photodynamic therapy
Red light only - no drug
Blue light only - no drug