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Safety and Efficacy Study of Photodynamic Therapy With Levulan Kerastick + Blue Light for Actinic Keratoses on the Upper Extremities

A Phase 3 Study of Photodynamic Therapy With Levulan Kerastick Topical Solution + Blue Light Versus Topical Solution Vehicle + Blue Light for the Treatment of Actinic Keratoses on the Upper Extremities

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02137785
Enrollment
269
Registered
2014-05-14
Start date
2014-05-31
Completion date
2015-03-31
Last updated
2015-09-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Actinic Keratosis

Keywords

Actinic Keratosis

Brief summary

The purpose of this study is to determine if Levulan Photodynamic Therapy (PDT) is safe and effective in the treatment of actinic keratoses on the upper arms and hands

Interventions

20% ALA applied to upper extremities for 3 hours prior to 10 J/cm2 blue light

Levulan Kerastick containing vehicle ingredients only. Vehicle solution applied to upper extremities 3 hours prior to 10 J/cm2 blue light

DEVICEBlue Light Photodynamic Therapy Illuminator (BLU-U)

10 J/cm2 blue light delivered at 10mW/cm2

Sponsors

DUSA Pharmaceuticals, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Four to fifteen Grade 1/2 actinic keratosis lesions (AKs) on one upper extremity

Exclusion criteria

* Pregnancy * grade 3 and/or atypical \>1cm AKs within Treatment Area * history of cutaneous photosensitization, porphyria, hypersensitivity to porphyrins or photodermatosis * lesions suspicious for skin cancer (skin cancer not ruled out by biopsy) or untreated skin cancers within the Treatment Area * skin pathology or condition which could interfere with the evaluation of the test product or requires the use of interfering topical or systemic therapy * Subject is immunosuppressed * unsuccessful outcome from previous ALA-PDT therapy * currently enrolled in an investigational drug or device study * has received an investigational drug or been treated with an investigational device within 30 days prior to the initiation of treatment * known sensitivity to one or more of the vehicle components (ethyl alcohol, isopropyl alcohol, laureth 4, polyethylene glycol) * use of the following topical preparations on the extremity to be treated: * Keratolytics including urea (greater than 5%), alpha hydroxyacids \[e.g.glycolic acid, lactic acid, etc. greater than 5%\], salicylic acid (greater than 2%) within 2 days of initiation of treatment. * Cryotherapy within 2 weeks of initiation of treatment * Retinoids, including tazarotene, adapalene, tretinoin, within 4 weeks of initiation of treatment. * Microdermabrasion, laser ablative treatments, ALA-PDT, chemical peels, 5-FU, diclofenac, ingenol mebutate, imiquimod or other topical treatments for AK within 8 weeks of initiation of treatment. * use of systemic retinoid therapy within 6 months of initiation of treatment.

Design outcomes

Primary

MeasureTime frameDescription
Complete Clearance RateWeek 12proportion of subjects in each treatment group with a count of zero lesions in the Treatment Area

Secondary

MeasureTime frameDescription
AK Clearance RateBaseline and Week 12{1 - \[(number of AK lesions at follow-up)/(number of AK lesions at Baseline)\]} x 100
Complete Clearance RateWeek 8proportion of subjects in each treatment group with a count of zero lesions in the Treatment Area
Subject Satisfaction ScoreWeek 12Subject satisfaction score 1. = Excellent (very satisfied) 2. = Good (moderately satisfied) 3. = Fair (slightly satisfied) 4. = Poor (not satisfied at all)

Other

MeasureTime frameDescription
Stinging/BurningBaselineSTINGING AND BURNING SCALE Grade 0 = None Grade 1 = Minimal, barely perceptible -tolerable and little discomfort Grade 2 = Moderate - tolerable, but causes some discomfort Grade 3 = Severe - very uncomfortable or intolerable
HyperpigmentationBaselineHYPERPIGMENTATION SCALE Grade 0 = No hyperpigmentation Grade 1 = Light hyperpigmentation involving small areas Grade 2 = Moderate hyperpigmentation involving small areas; light hyperpigmentation involving moderate areas Grade 3 = Moderate hyperpigmentation involving moderate sized areas; light hyperpigmentation involving large areas; small areas of marked hyperpigmentation Grade 4 = Marked hyperpigmentation involving moderate or large sized areas
Oozing/Vesiculation/CrustingBaselineOOZING/VESICULATION/CRUSTING Grade 0 = None Grade 1 = Minimal - a single area of oozing, vesiculation or crusting 3 mm diameter or less in size Grade 2 = Mild - two to four areas of oozing, vesiculation or crusting 3 mm diameter or less in size OR a single area larger than 3 mm diameter in size Grade 3 = Moderate - more than a single area of oozing, vesiculation or crusting larger than 3 mm diameter in size or more than four areas of 3 mm diameter or less in size Grade 4 = Severe - any degree of oozing, vesiculation or crusting greater than (3) above
Scaling & DrynessBaselineSCALING AND DRYNESS SCALE Grade 0 = None Grade 1 = Minimal - barely perceptible desquamation Grade 2 = Mild - limited areas of fine desquamation in up to 1/3 of the treatment area Grade 3 = Moderate - fine desquamation involving 1/3 to 2/3 of the treatment area or limited areas of coarser scaling Grade 4 = Severe - coarser scaling involving more than 2/3 of the treatment area or limited areas of very coarse scaling
HypopigmentationBaselineHYPOPIGMENTATION SCALE Grade 0 = No hypopigmentation Grade 1 = Light hypopigmentation involving small areas Grade 2 = Moderate hypopigmentation involving small areas; light hypopigmentation involving moderate areas Grade 3 = Moderate hypopigmentation involving moderate sized areas; light hypopigmentation involving large areas; small areas of marked hypopigmentation Grade 4 = Marked hypopigmentation involving moderate or large sized areas
ErythemaBaselineErythema Scale - Grade 0 = None Grade 1 = Minimal - barely perceptible erythema Grade 2 = Mild - predominantly minimal erythema (pink) in the treated area with or without a few isolated areas of more intense erythema Grade 3 = Moderate - predominantly moderate erythema (red) in the treated area with or without a few isolated areas of intense erythema (bright red) Grade 4 = Severe - predominantly intense erythema (bright red) in the treated area with or without a few isolated areas of very intense (fiery red) erythema
EdemaBaselineEDEMA SCALE Grade 0 = None Grade 1 = Minimal - scant, rare edema Grade 2 = Mild - easily seen edema, minimally palpable, involving up to 1/3 of the treatment area Grade 3 = Moderate - easily seen edema and typically palpable, involving between 1/3 to 2/3 of the treatment area Grade 4 = Severe - easily seen edema, indurated in some areas, involving over 2/3 of the treatment area

Countries

United States

Participant flow

Participants by arm

ArmCount
ALA-PDT
Aminolevulinic Acid (ALA): 20% ALA applied to upper extremities for 3 hours prior to 10 J/cm2 blue light BLU-U Blue Light Photodynamic Therapy Illuminator: 10 J/cm2 blue light delivered at 10mW/cm2
135
Vehicle
Topical Solution Vehicle: Levulan Kerastick containing vehicle ingredients only. Vehicle solution applied to upper extremities 3 hours prior to 10 J/cm2 blue light BLU-U Blue Light Photodynamic Therapy Illuminator: 10 J/cm2 blue light delivered at 10mW/cm2
134
Total269

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyLost to Follow-up10
Overall Studysubject moved out of state10
Overall StudyWithdrawal by Subject14

Baseline characteristics

CharacteristicVehicleTotalALA-PDT
Age, Continuous67.6 years67.6 years67.6 years
Ethnicity (NIH/OMB)
Hispanic or Latino
3 Participants3 Participants0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
131 Participants266 Participants135 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
134 Participants269 Participants135 Participants
Sex: Female, Male
Female
38 Participants81 Participants43 Participants
Sex: Female, Male
Male
96 Participants188 Participants92 Participants
Skin Type
Type I
16 participants33 participants17 participants
Skin Type
Type II
73 participants140 participants67 participants
Skin Type
Type III
32 participants69 participants37 participants
Skin Type
Type IV
13 participants27 participants14 participants
Skin Type
Type V
0 participants0 participants0 participants
Skin Type
Type VI
0 participants0 participants0 participants
Total Number AK Lesions (Grade 1/2)8.6 lesions per subject
STANDARD_DEVIATION 3.4
8.5 lesions per subject
STANDARD_DEVIATION 3.5
8.5 lesions per subject
STANDARD_DEVIATION 3.6

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
6 / 1356 / 134
serious
Total, serious adverse events
5 / 1352 / 134

Outcome results

Primary

Complete Clearance Rate

proportion of subjects in each treatment group with a count of zero lesions in the Treatment Area

Time frame: Week 12

Population: ITT

ArmMeasureValue (NUMBER)
ALA-PDTComplete Clearance Rate42 participants
VehicleComplete Clearance Rate17 participants
Comparison: A hierarchical procedure was used to control the level of significance. If the primary analysis was sig (p≤0.05), then AKCR at Week 12 were to be compared. If this analysis was significant, then the AKCR at Week 8 were to be compared. If this analysis was significant, then the CCR at Week 8 was to be compared.p-value: 0.0001Cochran-Mantel-Haenszel
Secondary

AK Clearance Rate

{1 - \[(number of AK lesions at follow-up)/(number of AK lesions at Baseline)\]} x 100

Time frame: Baseline and Week 8

Population: ITT using observed data only

ArmMeasureValue (MEAN)Dispersion
ALA-PDTAK Clearance Rate53.4 percentage of baseline lesions clearedStandard Deviation 45
VehicleAK Clearance Rate26.3 percentage of baseline lesions clearedStandard Deviation 44.3
p-value: <0.0001Mixed Models Analysis
Secondary

AK Clearance Rate

{1 - \[(number of AK lesions at follow-up)/(number of AK lesions at Baseline)\]} x 100

Time frame: Baseline and Week 12

Population: ITT using observed data only

ArmMeasureValue (MEAN)Dispersion
ALA-PDTAK Clearance Rate69.1 percentage of baseline lesions clearedStandard Deviation 37.4
VehicleAK Clearance Rate29.9 percentage of baseline lesions clearedStandard Deviation 51.5
p-value: <0.0001Mixed Models Analysis
Secondary

Complete Clearance Rate

proportion of subjects in each treatment group with a count of zero lesions in the Treatment Area

Time frame: Week 8

Population: ITT

ArmMeasureValue (NUMBER)
ALA-PDTComplete Clearance Rate35 participants
VehicleComplete Clearance Rate12 participants
p-value: 0.0001Cochran-Mantel-Haenszel
Secondary

Subject Satisfaction Score

Subject satisfaction score 1. = Excellent (very satisfied) 2. = Good (moderately satisfied) 3. = Fair (slightly satisfied) 4. = Poor (not satisfied at all)

Time frame: Week 12

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTSubject Satisfaction ScoreVery Satisfied71 participants
ALA-PDTSubject Satisfaction ScoreSlightly Satisfied12 participants
ALA-PDTSubject Satisfaction ScoreNot Satisfied4 participants
ALA-PDTSubject Satisfaction ScoreModerately Satisfied47 participants
VehicleSubject Satisfaction ScoreNot Satisfied48 participants
VehicleSubject Satisfaction ScoreVery Satisfied29 participants
VehicleSubject Satisfaction ScoreModerately Satisfied26 participants
VehicleSubject Satisfaction ScoreSlightly Satisfied28 participants
Other Pre-specified

Edema

EDEMA SCALE Grade 0 = None Grade 1 = Minimal - scant, rare edema Grade 2 = Mild - easily seen edema, minimally palpable, involving up to 1/3 of the treatment area Grade 3 = Moderate - easily seen edema and typically palpable, involving between 1/3 to 2/3 of the treatment area Grade 4 = Severe - easily seen edema, indurated in some areas, involving over 2/3 of the treatment area

Time frame: Baseline

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTEdemaGrade 0 (none)133 participants
ALA-PDTEdemaGrade 3 (moderate)0 participants
ALA-PDTEdemaGrade 2 (mild)0 participants
ALA-PDTEdemaGrade 4 (severe)0 participants
ALA-PDTEdemaGrade 1 (minimal)2 participants
VehicleEdemaGrade 4 (severe)0 participants
VehicleEdemaGrade 0 (none)134 participants
VehicleEdemaGrade 1 (minimal)0 participants
VehicleEdemaGrade 2 (mild)0 participants
VehicleEdemaGrade 3 (moderate)0 participants
Other Pre-specified

Edema

EDEMA SCALE Grade 0 = None Grade 1 = Minimal - scant, rare edema Grade 2 = Mild - easily seen edema, minimally palpable, involving up to 1/3 of the treatment area Grade 3 = Moderate - easily seen edema and typically palpable, involving between 1/3 to 2/3 of the treatment area Grade 4 = Severe - easily seen edema, indurated in some areas, involving over 2/3 of the treatment area

Time frame: 8 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTEdemaGrade 1 (minimal)0 participants
ALA-PDTEdemaGrade 3 (moderate)0 participants
ALA-PDTEdemaGrade 2 (mild)1 participants
ALA-PDTEdemaGrade 4 (severe)0 participants
ALA-PDTEdemaGrade 0 (none)131 participants
VehicleEdemaGrade 4 (severe)0 participants
VehicleEdemaGrade 0 (none)128 participants
VehicleEdemaGrade 1 (minimal)0 participants
VehicleEdemaGrade 2 (mild)0 participants
VehicleEdemaGrade 3 (moderate)1 participants
Other Pre-specified

Edema

EDEMA SCALE Grade 0 = None Grade 1 = Minimal - scant, rare edema Grade 2 = Mild - easily seen edema, minimally palpable, involving up to 1/3 of the treatment area Grade 3 = Moderate - easily seen edema and typically palpable, involving between 1/3 to 2/3 of the treatment area Grade 4 = Severe - easily seen edema, indurated in some areas, involving over 2/3 of the treatment area

Time frame: 12 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTEdemaGrade 1 (minimal)0 participants
ALA-PDTEdemaGrade 3 (moderate)0 participants
ALA-PDTEdemaGrade 2 (mild)0 participants
ALA-PDTEdemaGrade 4 (severe)0 participants
ALA-PDTEdemaGrade 0 (none)132 participants
VehicleEdemaGrade 4 (severe)0 participants
VehicleEdemaGrade 0 (none)130 participants
VehicleEdemaGrade 1 (minimal)0 participants
VehicleEdemaGrade 2 (mild)0 participants
VehicleEdemaGrade 3 (moderate)0 participants
Other Pre-specified

Edema

EDEMA SCALE Grade 0 = None Grade 1 = Minimal - scant, rare edema Grade 2 = Mild - easily seen edema, minimally palpable, involving up to 1/3 of the treatment area Grade 3 = Moderate - easily seen edema and typically palpable, involving between 1/3 to 2/3 of the treatment area Grade 4 = Severe - easily seen edema, indurated in some areas, involving over 2/3 of the treatment area

Time frame: 4 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTEdemaGrade 1 (minimal)1 participants
ALA-PDTEdemaGrade 3 (moderate)0 participants
ALA-PDTEdemaGrade 0 (none)134 participants
ALA-PDTEdemaGrade 4 (severe)0 participants
ALA-PDTEdemaGrade 2 (mild)0 participants
VehicleEdemaGrade 4 (severe)0 participants
VehicleEdemaGrade 1 (minimal)0 participants
VehicleEdemaGrade 2 (mild)0 participants
VehicleEdemaGrade 3 (moderate)0 participants
VehicleEdemaGrade 0 (none)132 participants
Other Pre-specified

Edema

EDEMA SCALE Grade 0 = None Grade 1 = Minimal - scant, rare edema Grade 2 = Mild - easily seen edema, minimally palpable, involving up to 1/3 of the treatment area Grade 3 = Moderate - easily seen edema and typically palpable, involving between 1/3 to 2/3 of the treatment area Grade 4 = Severe - easily seen edema, indurated in some areas, involving over 2/3 of the treatment area

Time frame: 2 weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTEdemaGrade 1 (minimal)4 participants
ALA-PDTEdemaGrade 3 (moderate)0 participants
ALA-PDTEdemaGrade 2 (mild)0 participants
ALA-PDTEdemaGrade 4 (severe)0 participants
ALA-PDTEdemaGrade 0 (none)131 participants
VehicleEdemaGrade 4 (severe)0 participants
VehicleEdemaGrade 0 (none)134 participants
VehicleEdemaGrade 1 (minimal)0 participants
VehicleEdemaGrade 2 (mild)0 participants
VehicleEdemaGrade 3 (moderate)0 participants
Other Pre-specified

Edema

EDEMA SCALE Grade 0 = None Grade 1 = Minimal - scant, rare edema Grade 2 = Mild - easily seen edema, minimally palpable, involving up to 1/3 of the treatment area Grade 3 = Moderate - easily seen edema and typically palpable, involving between 1/3 to 2/3 of the treatment area Grade 4 = Severe - easily seen edema, indurated in some areas, involving over 2/3 of the treatment area

Time frame: 24-48 hours after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTEdemaGrade 1 (minimal)27 participants
ALA-PDTEdemaGrade 3 (moderate)1 participants
ALA-PDTEdemaGrade 2 (mild)18 participants
ALA-PDTEdemaGrade 4 (severe)0 participants
ALA-PDTEdemaGrade 0 (none)89 participants
VehicleEdemaGrade 4 (severe)0 participants
VehicleEdemaGrade 0 (none)133 participants
VehicleEdemaGrade 1 (minimal)0 participants
VehicleEdemaGrade 2 (mild)1 participants
VehicleEdemaGrade 3 (moderate)0 participants
Other Pre-specified

Edema

EDEMA SCALE Grade 0 = None Grade 1 = Minimal - scant, rare edema Grade 2 = Mild - easily seen edema, minimally palpable, involving up to 1/3 of the treatment area Grade 3 = Moderate - easily seen edema and typically palpable, involving between 1/3 to 2/3 of the treatment area Grade 4 = Severe - easily seen edema, indurated in some areas, involving over 2/3 of the treatment area

Time frame: 5 minutes after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTEdemaGrade 1 (minimal)30 participants
ALA-PDTEdemaGrade 3 (moderate)3 participants
ALA-PDTEdemaGrade 2 (mild)10 participants
ALA-PDTEdemaGrade 4 (severe)0 participants
ALA-PDTEdemaGrade 0 (none)92 participants
VehicleEdemaGrade 4 (severe)0 participants
VehicleEdemaGrade 0 (none)127 participants
VehicleEdemaGrade 1 (minimal)7 participants
VehicleEdemaGrade 2 (mild)0 participants
VehicleEdemaGrade 3 (moderate)0 participants
Other Pre-specified

Erythema

Erythema Scale - Grade 0 = None Grade 1 = Minimal - barely perceptible erythema Grade 2 = Mild - predominantly minimal erythema (pink) in the treated area with or without a few isolated areas of more intense erythema Grade 3 = Moderate - predominantly moderate erythema (red) in the treated area with or without a few isolated areas of intense erythema (bright red) Grade 4 = Severe - predominantly intense erythema (bright red) in the treated area with or without a few isolated areas of very intense (fiery red) erythema

Time frame: 5 minutes after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTErythemaGrade 1 (light)26 participants
ALA-PDTErythemaGrade 3 (moderate)52 participants
ALA-PDTErythemaGrade 2 (mild)43 participants
ALA-PDTErythemaGrade 4 (severe)2 participants
ALA-PDTErythemaGrade 0 (none)12 participants
VehicleErythemaGrade 4 (severe)0 participants
VehicleErythemaGrade 0 (none)57 participants
VehicleErythemaGrade 1 (light)41 participants
VehicleErythemaGrade 2 (mild)27 participants
VehicleErythemaGrade 3 (moderate)9 participants
Other Pre-specified

Erythema

Erythema Scale - Grade 0 = None Grade 1 = Minimal - barely perceptible erythema Grade 2 = Mild - predominantly minimal erythema (pink) in the treated area with or without a few isolated areas of more intense erythema Grade 3 = Moderate - predominantly moderate erythema (red) in the treated area with or without a few isolated areas of intense erythema (bright red) Grade 4 = Severe - predominantly intense erythema (bright red) in the treated area with or without a few isolated areas of very intense (fiery red) erythema

Time frame: 2 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTErythemaGrade 1 (minimal)46 participants
ALA-PDTErythemaGrade 3 (moderate)10 participants
ALA-PDTErythemaGrade 2 (mild)51 participants
ALA-PDTErythemaGrade 4 (severe)0 participants
ALA-PDTErythemaGrade 0 (none)28 participants
VehicleErythemaGrade 4 (severe)0 participants
VehicleErythemaGrade 0 (none)61 participants
VehicleErythemaGrade 1 (minimal)58 participants
VehicleErythemaGrade 2 (mild)14 participants
VehicleErythemaGrade 3 (moderate)1 participants
Other Pre-specified

Erythema

Erythema Scale - Grade 0 = None Grade 1 = Minimal - barely perceptible erythema Grade 2 = Mild - predominantly minimal erythema (pink) in the treated area with or without a few isolated areas of more intense erythema Grade 3 = Moderate - predominantly moderate erythema (red) in the treated area with or without a few isolated areas of intense erythema (bright red) Grade 4 = Severe - predominantly intense erythema (bright red) in the treated area with or without a few isolated areas of very intense (fiery red) erythema

Time frame: 4 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTErythemaGrade 1 (minimal)54 participants
ALA-PDTErythemaGrade 3 (moderate)3 participants
ALA-PDTErythemaGrade 2 (mild)24 participants
ALA-PDTErythemaGrade 4 (severe)0 participants
ALA-PDTErythemaGrade 0 (none)54 participants
VehicleErythemaGrade 4 (severe)0 participants
VehicleErythemaGrade 0 (none)72 participants
VehicleErythemaGrade 1 (minimal)49 participants
VehicleErythemaGrade 2 (mild)11 participants
VehicleErythemaGrade 3 (moderate)0 participants
Other Pre-specified

Erythema

Erythema Scale - Grade 0 = None Grade 1 = Minimal - barely perceptible erythema Grade 2 = Mild - predominantly minimal erythema (pink) in the treated area with or without a few isolated areas of more intense erythema Grade 3 = Moderate - predominantly moderate erythema (red) in the treated area with or without a few isolated areas of intense erythema (bright red) Grade 4 = Severe - predominantly intense erythema (bright red) in the treated area with or without a few isolated areas of very intense (fiery red) erythema

Time frame: 8 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTErythemaGrade 1 (minimal)30 participants
ALA-PDTErythemaGrade 3 (moderate)5 participants
ALA-PDTErythemaGrade 2 (mild)18 participants
ALA-PDTErythemaGrade 4 (severe)0 participants
ALA-PDTErythemaGrade 0 (none)79 participants
VehicleErythemaGrade 4 (severe)0 participants
VehicleErythemaGrade 0 (none)81 participants
VehicleErythemaGrade 1 (minimal)39 participants
VehicleErythemaGrade 2 (mild)7 participants
VehicleErythemaGrade 3 (moderate)2 participants
Other Pre-specified

Erythema

Erythema Scale - Grade 0 = None Grade 1 = Minimal - barely perceptible erythema Grade 2 = Mild - predominantly minimal erythema (pink) in the treated area with or without a few isolated areas of more intense erythema Grade 3 = Moderate - predominantly moderate erythema (red) in the treated area with or without a few isolated areas of intense erythema (bright red) Grade 4 = Severe - predominantly intense erythema (bright red) in the treated area with or without a few isolated areas of very intense (fiery red) erythema

Time frame: 12 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTErythemaGrade 1 (minimal)34 participants
ALA-PDTErythemaGrade 3 (moderate)3 participants
ALA-PDTErythemaGrade 2 (mild)15 participants
ALA-PDTErythemaGrade 4 (severe)0 participants
ALA-PDTErythemaGrade 0 (none)80 participants
VehicleErythemaGrade 4 (severe)0 participants
VehicleErythemaGrade 0 (none)85 participants
VehicleErythemaGrade 1 (minimal)36 participants
VehicleErythemaGrade 2 (mild)8 participants
VehicleErythemaGrade 3 (moderate)1 participants
Other Pre-specified

Erythema

Erythema Scale - Grade 0 = None Grade 1 = Minimal - barely perceptible erythema Grade 2 = Mild - predominantly minimal erythema (pink) in the treated area with or without a few isolated areas of more intense erythema Grade 3 = Moderate - predominantly moderate erythema (red) in the treated area with or without a few isolated areas of intense erythema (bright red) Grade 4 = Severe - predominantly intense erythema (bright red) in the treated area with or without a few isolated areas of very intense (fiery red) erythema

Time frame: Baseline

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTErythemaGrade 1 (minimal)38 participants
ALA-PDTErythemaGrade 3 (moderate)3 participants
ALA-PDTErythemaGrade 2 (mild)21 participants
ALA-PDTErythemaGrade 4 (severe)0 participants
ALA-PDTErythemaGrade 0 (none)73 participants
VehicleErythemaGrade 4 (severe)0 participants
VehicleErythemaGrade 0 (none)73 participants
VehicleErythemaGrade 1 (minimal)39 participants
VehicleErythemaGrade 2 (mild)19 participants
VehicleErythemaGrade 3 (moderate)3 participants
Other Pre-specified

Erythema

Erythema Scale - Grade 0 = None Grade 1 = Minimal - barely perceptible erythema Grade 2 = Mild - predominantly minimal erythema (pink) in the treated area with or without a few isolated areas of more intense erythema Grade 3 = Moderate - predominantly moderate erythema (red) in the treated area with or without a few isolated areas of intense erythema (bright red) Grade 4 = Severe - predominantly intense erythema (bright red) in the treated area with or without a few isolated areas of very intense (fiery red) erythema

Time frame: 24-48 hours after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTErythemaGrade 1 (minimal)16 participants
ALA-PDTErythemaGrade 3 (moderate)66 participants
ALA-PDTErythemaGrade 2 (mild)48 participants
ALA-PDTErythemaGrade 4 (severe)3 participants
ALA-PDTErythemaGrade 0 (none)2 participants
VehicleErythemaGrade 4 (severe)0 participants
VehicleErythemaGrade 0 (none)64 participants
VehicleErythemaGrade 1 (minimal)43 participants
VehicleErythemaGrade 2 (mild)23 participants
VehicleErythemaGrade 3 (moderate)4 participants
Other Pre-specified

Hyperpigmentation

HYPERPIGMENTATION SCALE Grade 0 = No hyperpigmentation Grade 1 = Light hyperpigmentation involving small areas Grade 2 = Moderate hyperpigmentation involving small areas; light hyperpigmentation involving moderate areas Grade 3 = Moderate hyperpigmentation involving moderate sized areas; light hyperpigmentation involving large areas; small areas of marked hyperpigmentation Grade 4 = Marked hyperpigmentation involving moderate or large sized areas

Time frame: 24-48 hours after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTHyperpigmentationGrade 1 (light)49 participants
ALA-PDTHyperpigmentationGrade 3 (moderate - moderate)11 participants
ALA-PDTHyperpigmentationGrade 2 (moderate - small)28 participants
ALA-PDTHyperpigmentationGrade 4 (marked)1 participants
ALA-PDTHyperpigmentationGrade 0 (none)46 participants
VehicleHyperpigmentationGrade 4 (marked)2 participants
VehicleHyperpigmentationGrade 0 (none)58 participants
VehicleHyperpigmentationGrade 1 (light)34 participants
VehicleHyperpigmentationGrade 2 (moderate - small)30 participants
VehicleHyperpigmentationGrade 3 (moderate - moderate)10 participants
Other Pre-specified

Hyperpigmentation

HYPERPIGMENTATION SCALE Grade 0 = No hyperpigmentation Grade 1 = Light hyperpigmentation involving small areas Grade 2 = Moderate hyperpigmentation involving small areas; light hyperpigmentation involving moderate areas Grade 3 = Moderate hyperpigmentation involving moderate sized areas; light hyperpigmentation involving large areas; small areas of marked hyperpigmentation Grade 4 = Marked hyperpigmentation involving moderate or large sized areas

Time frame: Baseline

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTHyperpigmentationGrade 1 (light)51 participants
ALA-PDTHyperpigmentationGrade 3 (moderate - moderate)10 participants
ALA-PDTHyperpigmentationGrade 2 (moderate - small)27 participants
ALA-PDTHyperpigmentationGrade 4 (marked)1 participants
ALA-PDTHyperpigmentationGrade 0 (none)46 participants
VehicleHyperpigmentationGrade 4 (marked)2 participants
VehicleHyperpigmentationGrade 0 (none)53 participants
VehicleHyperpigmentationGrade 1 (light)34 participants
VehicleHyperpigmentationGrade 2 (moderate - small)35 participants
VehicleHyperpigmentationGrade 3 (moderate - moderate)10 participants
Other Pre-specified

Hyperpigmentation

HYPERPIGMENTATION SCALE Grade 0 = No hyperpigmentation Grade 1 = Light hyperpigmentation involving small areas Grade 2 = Moderate hyperpigmentation involving small areas; light hyperpigmentation involving moderate areas Grade 3 = Moderate hyperpigmentation involving moderate sized areas; light hyperpigmentation involving large areas; small areas of marked hyperpigmentation Grade 4 = Marked hyperpigmentation involving moderate or large sized areas

Time frame: 2 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTHyperpigmentationGrade 0 (none)45 participants
ALA-PDTHyperpigmentationGrade 3 (moderate - moderate)10 participants
ALA-PDTHyperpigmentationGrade 2 (moderate - small)33 participants
ALA-PDTHyperpigmentationGrade 4 (marked)1 participants
ALA-PDTHyperpigmentationGrade 1 (light)46 participants
VehicleHyperpigmentationGrade 4 (marked)2 participants
VehicleHyperpigmentationGrade 0 (none)58 participants
VehicleHyperpigmentationGrade 1 (light)35 participants
VehicleHyperpigmentationGrade 2 (moderate - small)30 participants
VehicleHyperpigmentationGrade 3 (moderate - moderate)9 participants
Other Pre-specified

Hyperpigmentation

HYPERPIGMENTATION SCALE Grade 0 = No hyperpigmentation Grade 1 = Light hyperpigmentation involving small areas Grade 2 = Moderate hyperpigmentation involving small areas; light hyperpigmentation involving moderate areas Grade 3 = Moderate hyperpigmentation involving moderate sized areas; light hyperpigmentation involving large areas; small areas of marked hyperpigmentation Grade 4 = Marked hyperpigmentation involving moderate or large sized areas

Time frame: 4 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTHyperpigmentationGrade 1 (light)44 participants
ALA-PDTHyperpigmentationGrade 3 (moderate - moderate)9 participants
ALA-PDTHyperpigmentationGrade 2 (moderate - small)30 participants
ALA-PDTHyperpigmentationGrade 4 (marked)1 participants
ALA-PDTHyperpigmentationGrade 0 (none)51 participants
VehicleHyperpigmentationGrade 4 (marked)2 participants
VehicleHyperpigmentationGrade 0 (none)56 participants
VehicleHyperpigmentationGrade 1 (light)37 participants
VehicleHyperpigmentationGrade 2 (moderate - small)28 participants
VehicleHyperpigmentationGrade 3 (moderate - moderate)9 participants
Other Pre-specified

Hyperpigmentation

HYPERPIGMENTATION SCALE Grade 0 = No hyperpigmentation Grade 1 = Light hyperpigmentation involving small areas Grade 2 = Moderate hyperpigmentation involving small areas; light hyperpigmentation involving moderate areas Grade 3 = Moderate hyperpigmentation involving moderate sized areas; light hyperpigmentation involving large areas; small areas of marked hyperpigmentation Grade 4 = Marked hyperpigmentation involving moderate or large sized areas

Time frame: 8 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTHyperpigmentationGrade 1 (light)44 participants
ALA-PDTHyperpigmentationGrade 3 (moderate - moderate)9 participants
ALA-PDTHyperpigmentationGrade 2 (moderate - small)27 participants
ALA-PDTHyperpigmentationGrade 4 (marked)1 participants
ALA-PDTHyperpigmentationGrade 0 (none)51 participants
VehicleHyperpigmentationGrade 4 (marked)2 participants
VehicleHyperpigmentationGrade 0 (none)53 participants
VehicleHyperpigmentationGrade 1 (light)37 participants
VehicleHyperpigmentationGrade 2 (moderate - small)27 participants
VehicleHyperpigmentationGrade 3 (moderate - moderate)10 participants
Other Pre-specified

Hyperpigmentation

HYPERPIGMENTATION SCALE Grade 0 = No hyperpigmentation Grade 1 = Light hyperpigmentation involving small areas Grade 2 = Moderate hyperpigmentation involving small areas; light hyperpigmentation involving moderate areas Grade 3 = Moderate hyperpigmentation involving moderate sized areas; light hyperpigmentation involving large areas; small areas of marked hyperpigmentation Grade 4 = Marked hyperpigmentation involving moderate or large sized areas

Time frame: 12 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTHyperpigmentationGrade 1 (light)42 participants
ALA-PDTHyperpigmentationGrade 3 (moderate - moderate)8 participants
ALA-PDTHyperpigmentationGrade 2 (moderate - small)29 participants
ALA-PDTHyperpigmentationGrade 4 (marked)1 participants
ALA-PDTHyperpigmentationGrade 0 (none)52 participants
VehicleHyperpigmentationGrade 4 (marked)2 participants
VehicleHyperpigmentationGrade 0 (none)49 participants
VehicleHyperpigmentationGrade 1 (light)43 participants
VehicleHyperpigmentationGrade 2 (moderate - small)26 participants
VehicleHyperpigmentationGrade 3 (moderate - moderate)10 participants
Other Pre-specified

Hypopigmentation

HYPOPIGMENTATION SCALE Grade 0 = No hypopigmentation Grade 1 = Light hypopigmentation involving small areas Grade 2 = Moderate hypopigmentation involving small areas; light hypopigmentation involving moderate areas Grade 3 = Moderate hypopigmentation involving moderate sized areas; light hypopigmentation involving large areas; small areas of marked hypopigmentation Grade 4 = Marked hypopigmentation involving moderate or large sized areas

Time frame: 24-48 hours after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTHypopigmentationGrade 3 (moderate - moderate)5 participants
ALA-PDTHypopigmentationGrade 4 (marked)0 participants
ALA-PDTHypopigmentationGrade 0 (none)76 participants
ALA-PDTHypopigmentationGrade 1 (light)42 participants
ALA-PDTHypopigmentationGrade 2 (moderate - small)12 participants
VehicleHypopigmentationGrade 2 (moderate - small)14 participants
VehicleHypopigmentationGrade 3 (moderate - moderate)4 participants
VehicleHypopigmentationGrade 1 (light)46 participants
VehicleHypopigmentationGrade 4 (marked)2 participants
VehicleHypopigmentationGrade 0 (none)68 participants
Other Pre-specified

Hypopigmentation

HYPOPIGMENTATION SCALE Grade 0 = No hypopigmentation Grade 1 = Light hypopigmentation involving small areas Grade 2 = Moderate hypopigmentation involving small areas; light hypopigmentation involving moderate areas Grade 3 = Moderate hypopigmentation involving moderate sized areas; light hypopigmentation involving large areas; small areas of marked hypopigmentation Grade 4 = Marked hypopigmentation involving moderate or large sized areas

Time frame: Baseline

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTHypopigmentationGrade 1 (light)40 participants
ALA-PDTHypopigmentationGrade 3 (moderate - moderate)4 participants
ALA-PDTHypopigmentationGrade 2 (moderate - small)16 participants
ALA-PDTHypopigmentationGrade 4 (marked)0 participants
ALA-PDTHypopigmentationGrade 0 (none)75 participants
VehicleHypopigmentationGrade 4 (marked)2 participants
VehicleHypopigmentationGrade 0 (none)64 participants
VehicleHypopigmentationGrade 1 (light)47 participants
VehicleHypopigmentationGrade 2 (moderate - small)17 participants
VehicleHypopigmentationGrade 3 (moderate - moderate)4 participants
Other Pre-specified

Hypopigmentation

HYPOPIGMENTATION SCALE Grade 0 = No hypopigmentation Grade 1 = Light hypopigmentation involving small areas Grade 2 = Moderate hypopigmentation involving small areas; light hypopigmentation involving moderate areas Grade 3 = Moderate hypopigmentation involving moderate sized areas; light hypopigmentation involving large areas; small areas of marked hypopigmentation Grade 4 = Marked hypopigmentation involving moderate or large sized areas

Time frame: 12 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTHypopigmentationGrade 1 (light)40 participants
ALA-PDTHypopigmentationGrade 3 (moderate - moderate)3 participants
ALA-PDTHypopigmentationGrade 2 (moderate - small)16 participants
ALA-PDTHypopigmentationGrade 4 (marked)0 participants
ALA-PDTHypopigmentationGrade 0 (none)73 participants
VehicleHypopigmentationGrade 4 (marked)2 participants
VehicleHypopigmentationGrade 0 (none)66 participants
VehicleHypopigmentationGrade 1 (light)45 participants
VehicleHypopigmentationGrade 2 (moderate - small)14 participants
VehicleHypopigmentationGrade 3 (moderate - moderate)3 participants
Other Pre-specified

Hypopigmentation

HYPOPIGMENTATION SCALE Grade 0 = No hypopigmentation Grade 1 = Light hypopigmentation involving small areas Grade 2 = Moderate hypopigmentation involving small areas; light hypopigmentation involving moderate areas Grade 3 = Moderate hypopigmentation involving moderate sized areas; light hypopigmentation involving large areas; small areas of marked hypopigmentation Grade 4 = Marked hypopigmentation involving moderate or large sized areas

Time frame: 8 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTHypopigmentationGrade 2 (moderate - small)15 participants
ALA-PDTHypopigmentationGrade 3 (moderate - moderate)3 participants
ALA-PDTHypopigmentationGrade 0 (none)75 participants
ALA-PDTHypopigmentationGrade 1 (light)39 participants
ALA-PDTHypopigmentationGrade 4 (marked)0 participants
VehicleHypopigmentationGrade 4 (marked)2 participants
VehicleHypopigmentationGrade 2 (moderate - small)15 participants
VehicleHypopigmentationGrade 1 (light)45 participants
VehicleHypopigmentationGrade 3 (moderate - moderate)4 participants
VehicleHypopigmentationGrade 0 (none)63 participants
Other Pre-specified

Hypopigmentation

HYPOPIGMENTATION SCALE Grade 0 = No hypopigmentation Grade 1 = Light hypopigmentation involving small areas Grade 2 = Moderate hypopigmentation involving small areas; light hypopigmentation involving moderate areas Grade 3 = Moderate hypopigmentation involving moderate sized areas; light hypopigmentation involving large areas; small areas of marked hypopigmentation Grade 4 = Marked hypopigmentation involving moderate or large sized areas

Time frame: 4 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTHypopigmentationGrade 1 (light)42 participants
ALA-PDTHypopigmentationGrade 3 (moderate - moderate)4 participants
ALA-PDTHypopigmentationGrade 2 (moderate - small)13 participants
ALA-PDTHypopigmentationGrade 4 (marked)0 participants
ALA-PDTHypopigmentationGrade 0 (none)76 participants
VehicleHypopigmentationGrade 4 (marked)2 participants
VehicleHypopigmentationGrade 0 (none)65 participants
VehicleHypopigmentationGrade 1 (light)47 participants
VehicleHypopigmentationGrade 2 (moderate - small)14 participants
VehicleHypopigmentationGrade 3 (moderate - moderate)4 participants
Other Pre-specified

Hypopigmentation

HYPOPIGMENTATION SCALE Grade 0 = No hypopigmentation Grade 1 = Light hypopigmentation involving small areas Grade 2 = Moderate hypopigmentation involving small areas; light hypopigmentation involving moderate areas Grade 3 = Moderate hypopigmentation involving moderate sized areas; light hypopigmentation involving large areas; small areas of marked hypopigmentation Grade 4 = Marked hypopigmentation involving moderate or large sized areas

Time frame: 2 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTHypopigmentationGrade 1 (light)44 participants
ALA-PDTHypopigmentationGrade 3 (moderate - moderate)4 participants
ALA-PDTHypopigmentationGrade 2 (moderate - small)13 participants
ALA-PDTHypopigmentationGrade 4 (marked)0 participants
ALA-PDTHypopigmentationGrade 0 (none)74 participants
VehicleHypopigmentationGrade 4 (marked)2 participants
VehicleHypopigmentationGrade 0 (none)67 participants
VehicleHypopigmentationGrade 1 (light)47 participants
VehicleHypopigmentationGrade 2 (moderate - small)14 participants
VehicleHypopigmentationGrade 3 (moderate - moderate)4 participants
Other Pre-specified

Oozing/Vesiculation/Crusting

OOZING/VESICULATION/CRUSTING Grade 0 = None Grade 1 = Minimal - a single area of oozing, vesiculation or crusting 3 mm diameter or less in size Grade 2 = Mild - two to four areas of oozing, vesiculation or crusting 3 mm diameter or less in size OR a single area larger than 3 mm diameter in size Grade 3 = Moderate - more than a single area of oozing, vesiculation or crusting larger than 3 mm diameter in size or more than four areas of 3 mm diameter or less in size Grade 4 = Severe - any degree of oozing, vesiculation or crusting greater than (3) above

Time frame: 8 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTOozing/Vesiculation/CrustingGrade 1 (minimal)5 participants
ALA-PDTOozing/Vesiculation/CrustingGrade 3 (moderate)0 participants
ALA-PDTOozing/Vesiculation/CrustingGrade 2 (mild)2 participants
ALA-PDTOozing/Vesiculation/CrustingGrade 4 (severe)0 participants
ALA-PDTOozing/Vesiculation/CrustingGrade 0 (none)125 participants
VehicleOozing/Vesiculation/CrustingGrade 4 (severe)0 participants
VehicleOozing/Vesiculation/CrustingGrade 0 (none)124 participants
VehicleOozing/Vesiculation/CrustingGrade 1 (minimal)3 participants
VehicleOozing/Vesiculation/CrustingGrade 2 (mild)2 participants
VehicleOozing/Vesiculation/CrustingGrade 3 (moderate)0 participants
Other Pre-specified

Oozing/Vesiculation/Crusting

OOZING/VESICULATION/CRUSTING Grade 0 = None Grade 1 = Minimal - a single area of oozing, vesiculation or crusting 3 mm diameter or less in size Grade 2 = Mild - two to four areas of oozing, vesiculation or crusting 3 mm diameter or less in size OR a single area larger than 3 mm diameter in size Grade 3 = Moderate - more than a single area of oozing, vesiculation or crusting larger than 3 mm diameter in size or more than four areas of 3 mm diameter or less in size Grade 4 = Severe - any degree of oozing, vesiculation or crusting greater than (3) above

Time frame: 12 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTOozing/Vesiculation/CrustingGrade 1 (minimal)5 participants
ALA-PDTOozing/Vesiculation/CrustingGrade 3 (moderate)1 participants
ALA-PDTOozing/Vesiculation/CrustingGrade 2 (mild)3 participants
ALA-PDTOozing/Vesiculation/CrustingGrade 4 (severe)0 participants
ALA-PDTOozing/Vesiculation/CrustingGrade 0 (none)123 participants
VehicleOozing/Vesiculation/CrustingGrade 4 (severe)0 participants
VehicleOozing/Vesiculation/CrustingGrade 0 (none)125 participants
VehicleOozing/Vesiculation/CrustingGrade 1 (minimal)4 participants
VehicleOozing/Vesiculation/CrustingGrade 2 (mild)0 participants
VehicleOozing/Vesiculation/CrustingGrade 3 (moderate)1 participants
Other Pre-specified

Oozing/Vesiculation/Crusting

OOZING/VESICULATION/CRUSTING Grade 0 = None Grade 1 = Minimal - a single area of oozing, vesiculation or crusting 3 mm diameter or less in size Grade 2 = Mild - two to four areas of oozing, vesiculation or crusting 3 mm diameter or less in size OR a single area larger than 3 mm diameter in size Grade 3 = Moderate - more than a single area of oozing, vesiculation or crusting larger than 3 mm diameter in size or more than four areas of 3 mm diameter or less in size Grade 4 = Severe - any degree of oozing, vesiculation or crusting greater than (3) above

Time frame: Baseline

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTOozing/Vesiculation/CrustingGrade 1 (minimal)7 participants
ALA-PDTOozing/Vesiculation/CrustingGrade 3 (moderate)0 participants
ALA-PDTOozing/Vesiculation/CrustingGrade 2 (mild)0 participants
ALA-PDTOozing/Vesiculation/CrustingGrade 4 (severe)0 participants
ALA-PDTOozing/Vesiculation/CrustingGrade 0 (none)128 participants
VehicleOozing/Vesiculation/CrustingGrade 4 (severe)0 participants
VehicleOozing/Vesiculation/CrustingGrade 0 (none)129 participants
VehicleOozing/Vesiculation/CrustingGrade 1 (minimal)4 participants
VehicleOozing/Vesiculation/CrustingGrade 2 (mild)1 participants
VehicleOozing/Vesiculation/CrustingGrade 3 (moderate)0 participants
Other Pre-specified

Oozing/Vesiculation/Crusting

OOZING/VESICULATION/CRUSTING Grade 0 = None Grade 1 = Minimal - a single area of oozing, vesiculation or crusting 3 mm diameter or less in size Grade 2 = Mild - two to four areas of oozing, vesiculation or crusting 3 mm diameter or less in size OR a single area larger than 3 mm diameter in size Grade 3 = Moderate - more than a single area of oozing, vesiculation or crusting larger than 3 mm diameter in size or more than four areas of 3 mm diameter or less in size Grade 4 = Severe - any degree of oozing, vesiculation or crusting greater than (3) above

Time frame: 24-48 hours after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTOozing/Vesiculation/CrustingGrade 1 (minimal)12 participants
ALA-PDTOozing/Vesiculation/CrustingGrade 3 (moderate)2 participants
ALA-PDTOozing/Vesiculation/CrustingGrade 2 (mild)5 participants
ALA-PDTOozing/Vesiculation/CrustingGrade 4 (severe)0 participants
ALA-PDTOozing/Vesiculation/CrustingGrade 0 (none)116 participants
VehicleOozing/Vesiculation/CrustingGrade 4 (severe)0 participants
VehicleOozing/Vesiculation/CrustingGrade 0 (none)127 participants
VehicleOozing/Vesiculation/CrustingGrade 1 (minimal)3 participants
VehicleOozing/Vesiculation/CrustingGrade 2 (mild)3 participants
VehicleOozing/Vesiculation/CrustingGrade 3 (moderate)1 participants
Other Pre-specified

Oozing/Vesiculation/Crusting

OOZING/VESICULATION/CRUSTING Grade 0 = None Grade 1 = Minimal - a single area of oozing, vesiculation or crusting 3 mm diameter or less in size Grade 2 = Mild - two to four areas of oozing, vesiculation or crusting 3 mm diameter or less in size OR a single area larger than 3 mm diameter in size Grade 3 = Moderate - more than a single area of oozing, vesiculation or crusting larger than 3 mm diameter in size or more than four areas of 3 mm diameter or less in size Grade 4 = Severe - any degree of oozing, vesiculation or crusting greater than (3) above

Time frame: 2 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTOozing/Vesiculation/CrustingGrade 1 (minimal)23 participants
ALA-PDTOozing/Vesiculation/CrustingGrade 3 (moderate)4 participants
ALA-PDTOozing/Vesiculation/CrustingGrade 2 (mild)16 participants
ALA-PDTOozing/Vesiculation/CrustingGrade 4 (severe)0 participants
ALA-PDTOozing/Vesiculation/CrustingGrade 0 (none)92 participants
VehicleOozing/Vesiculation/CrustingGrade 4 (severe)0 participants
VehicleOozing/Vesiculation/CrustingGrade 0 (none)129 participants
VehicleOozing/Vesiculation/CrustingGrade 1 (minimal)4 participants
VehicleOozing/Vesiculation/CrustingGrade 2 (mild)1 participants
VehicleOozing/Vesiculation/CrustingGrade 3 (moderate)0 participants
Other Pre-specified

Oozing/Vesiculation/Crusting

OOZING/VESICULATION/CRUSTING Grade 0 = None Grade 1 = Minimal - a single area of oozing, vesiculation or crusting 3 mm diameter or less in size Grade 2 = Mild - two to four areas of oozing, vesiculation or crusting 3 mm diameter or less in size OR a single area larger than 3 mm diameter in size Grade 3 = Moderate - more than a single area of oozing, vesiculation or crusting larger than 3 mm diameter in size or more than four areas of 3 mm diameter or less in size Grade 4 = Severe - any degree of oozing, vesiculation or crusting greater than (3) above

Time frame: 4 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTOozing/Vesiculation/CrustingGrade 1 (minimal)12 participants
ALA-PDTOozing/Vesiculation/CrustingGrade 3 (moderate)0 participants
ALA-PDTOozing/Vesiculation/CrustingGrade 2 (mild)2 participants
ALA-PDTOozing/Vesiculation/CrustingGrade 4 (severe)0 participants
ALA-PDTOozing/Vesiculation/CrustingGrade 0 (none)121 participants
VehicleOozing/Vesiculation/CrustingGrade 4 (severe)0 participants
VehicleOozing/Vesiculation/CrustingGrade 0 (none)129 participants
VehicleOozing/Vesiculation/CrustingGrade 1 (minimal)2 participants
VehicleOozing/Vesiculation/CrustingGrade 2 (mild)1 participants
VehicleOozing/Vesiculation/CrustingGrade 3 (moderate)0 participants
Other Pre-specified

Scaling & Dryness

SCALING AND DRYNESS SCALE Grade 0 = None Grade 1 = Minimal - barely perceptible desquamation Grade 2 = Mild - limited areas of fine desquamation in up to 1/3 of the treatment area Grade 3 = Moderate - fine desquamation involving 1/3 to 2/3 of the treatment area or limited areas of coarser scaling Grade 4 = Severe - coarser scaling involving more than 2/3 of the treatment area or limited areas of very coarse scaling

Time frame: 4 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTScaling & DrynessGrade 1 (minimal)44 participants
ALA-PDTScaling & DrynessGrade 3 (moderate)3 participants
ALA-PDTScaling & DrynessGrade 2 (mild)15 participants
ALA-PDTScaling & DrynessGrade 4 (severe)0 participants
ALA-PDTScaling & DrynessGrade 0 (none)73 participants
VehicleScaling & DrynessGrade 4 (severe)0 participants
VehicleScaling & DrynessGrade 0 (none)83 participants
VehicleScaling & DrynessGrade 1 (minimal)38 participants
VehicleScaling & DrynessGrade 2 (mild)11 participants
VehicleScaling & DrynessGrade 3 (moderate)0 participants
Other Pre-specified

Scaling & Dryness

SCALING AND DRYNESS SCALE Grade 0 = None Grade 1 = Minimal - barely perceptible desquamation Grade 2 = Mild - limited areas of fine desquamation in up to 1/3 of the treatment area Grade 3 = Moderate - fine desquamation involving 1/3 to 2/3 of the treatment area or limited areas of coarser scaling Grade 4 = Severe - coarser scaling involving more than 2/3 of the treatment area or limited areas of very coarse scaling

Time frame: 12 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTScaling & DrynessGrade 1 (minimal)33 participants
ALA-PDTScaling & DrynessGrade 3 (moderate)5 participants
ALA-PDTScaling & DrynessGrade 2 (mild)9 participants
ALA-PDTScaling & DrynessGrade 4 (severe)0 participants
ALA-PDTScaling & DrynessGrade 0 (none)85 participants
VehicleScaling & DrynessGrade 4 (severe)0 participants
VehicleScaling & DrynessGrade 0 (none)86 participants
VehicleScaling & DrynessGrade 1 (minimal)32 participants
VehicleScaling & DrynessGrade 2 (mild)10 participants
VehicleScaling & DrynessGrade 3 (moderate)2 participants
Other Pre-specified

Scaling & Dryness

SCALING AND DRYNESS SCALE Grade 0 = None Grade 1 = Minimal - barely perceptible desquamation Grade 2 = Mild - limited areas of fine desquamation in up to 1/3 of the treatment area Grade 3 = Moderate - fine desquamation involving 1/3 to 2/3 of the treatment area or limited areas of coarser scaling Grade 4 = Severe - coarser scaling involving more than 2/3 of the treatment area or limited areas of very coarse scaling

Time frame: Baseline

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTScaling & DrynessGrade 1 (minimal)35 participants
ALA-PDTScaling & DrynessGrade 3 (moderate)7 participants
ALA-PDTScaling & DrynessGrade 2 (mild)10 participants
ALA-PDTScaling & DrynessGrade 4 (severe)0 participants
ALA-PDTScaling & DrynessGrade 0 (none)83 participants
VehicleScaling & DrynessGrade 4 (severe)0 participants
VehicleScaling & DrynessGrade 0 (none)78 participants
VehicleScaling & DrynessGrade 1 (minimal)41 participants
VehicleScaling & DrynessGrade 2 (mild)11 participants
VehicleScaling & DrynessGrade 3 (moderate)4 participants
Other Pre-specified

Scaling & Dryness

SCALING AND DRYNESS SCALE Grade 0 = None Grade 1 = Minimal - barely perceptible desquamation Grade 2 = Mild - limited areas of fine desquamation in up to 1/3 of the treatment area Grade 3 = Moderate - fine desquamation involving 1/3 to 2/3 of the treatment area or limited areas of coarser scaling Grade 4 = Severe - coarser scaling involving more than 2/3 of the treatment area or limited areas of very coarse scaling

Time frame: 24-48 hours after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTScaling & DrynessGrade 1 (minimal)30 participants
ALA-PDTScaling & DrynessGrade 3 (moderate)4 participants
ALA-PDTScaling & DrynessGrade 2 (mild)17 participants
ALA-PDTScaling & DrynessGrade 4 (severe)0 participants
ALA-PDTScaling & DrynessGrade 0 (none)84 participants
VehicleScaling & DrynessGrade 4 (severe)0 participants
VehicleScaling & DrynessGrade 0 (none)79 participants
VehicleScaling & DrynessGrade 1 (minimal)40 participants
VehicleScaling & DrynessGrade 2 (mild)10 participants
VehicleScaling & DrynessGrade 3 (moderate)5 participants
Other Pre-specified

Scaling & Dryness

SCALING AND DRYNESS SCALE Grade 0 = None Grade 1 = Minimal - barely perceptible desquamation Grade 2 = Mild - limited areas of fine desquamation in up to 1/3 of the treatment area Grade 3 = Moderate - fine desquamation involving 1/3 to 2/3 of the treatment area or limited areas of coarser scaling Grade 4 = Severe - coarser scaling involving more than 2/3 of the treatment area or limited areas of very coarse scaling

Time frame: 2 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTScaling & DrynessGrade 1 (minimal)47 participants
ALA-PDTScaling & DrynessGrade 3 (moderate)26 participants
ALA-PDTScaling & DrynessGrade 2 (mild)29 participants
ALA-PDTScaling & DrynessGrade 4 (severe)0 participants
ALA-PDTScaling & DrynessGrade 0 (none)33 participants
VehicleScaling & DrynessGrade 4 (severe)0 participants
VehicleScaling & DrynessGrade 0 (none)81 participants
VehicleScaling & DrynessGrade 1 (minimal)38 participants
VehicleScaling & DrynessGrade 2 (mild)11 participants
VehicleScaling & DrynessGrade 3 (moderate)4 participants
Other Pre-specified

Scaling & Dryness

SCALING AND DRYNESS SCALE Grade 0 = None Grade 1 = Minimal - barely perceptible desquamation Grade 2 = Mild - limited areas of fine desquamation in up to 1/3 of the treatment area Grade 3 = Moderate - fine desquamation involving 1/3 to 2/3 of the treatment area or limited areas of coarser scaling Grade 4 = Severe - coarser scaling involving more than 2/3 of the treatment area or limited areas of very coarse scaling

Time frame: 8 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTScaling & DrynessGrade 1 (minimal)35 participants
ALA-PDTScaling & DrynessGrade 3 (moderate)3 participants
ALA-PDTScaling & DrynessGrade 2 (mild)11 participants
ALA-PDTScaling & DrynessGrade 4 (severe)0 participants
ALA-PDTScaling & DrynessGrade 0 (none)83 participants
VehicleScaling & DrynessGrade 4 (severe)0 participants
VehicleScaling & DrynessGrade 0 (none)86 participants
VehicleScaling & DrynessGrade 1 (minimal)35 participants
VehicleScaling & DrynessGrade 2 (mild)5 participants
VehicleScaling & DrynessGrade 3 (moderate)3 participants
Other Pre-specified

Stinging/Burning

STINGING AND BURNING SCALE Grade 0 = None Grade 1 = Minimal, barely perceptible -tolerable and little discomfort Grade 2 = Moderate - tolerable, but causes some discomfort Grade 3 = Severe - very uncomfortable or intolerable

Time frame: 12 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTStinging/BurningGrade 2 (moderate)1 participants
ALA-PDTStinging/BurningGrade 1 (mild)1 participants
ALA-PDTStinging/BurningGrade 3 (severe)0 participants
ALA-PDTStinging/BurningGrade 0 (none)130 participants
VehicleStinging/BurningGrade 3 (severe)0 participants
VehicleStinging/BurningGrade 1 (mild)0 participants
VehicleStinging/BurningGrade 2 (moderate)0 participants
VehicleStinging/BurningGrade 0 (none)130 participants
Other Pre-specified

Stinging/Burning

STINGING AND BURNING SCALE Grade 0 = None Grade 1 = Minimal, barely perceptible -tolerable and little discomfort Grade 2 = Moderate - tolerable, but causes some discomfort Grade 3 = Severe - very uncomfortable or intolerable

Time frame: During PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTStinging/BurningGrade 0 (none)10 participants
ALA-PDTStinging/BurningGrade 1 (mild)39 participants
ALA-PDTStinging/BurningGrade 2 (moderate)74 participants
ALA-PDTStinging/BurningGrade 3 (severe)12 participants
VehicleStinging/BurningGrade 3 (severe)0 participants
VehicleStinging/BurningGrade 0 (none)111 participants
VehicleStinging/BurningGrade 2 (moderate)0 participants
VehicleStinging/BurningGrade 1 (mild)23 participants
Other Pre-specified

Stinging/Burning

STINGING AND BURNING SCALE Grade 0 = None Grade 1 = Minimal, barely perceptible -tolerable and little discomfort Grade 2 = Moderate - tolerable, but causes some discomfort Grade 3 = Severe - very uncomfortable or intolerable

Time frame: 5 minutes after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTStinging/BurningGrade 0 (none)30 participants
ALA-PDTStinging/BurningGrade 1 (mild)70 participants
ALA-PDTStinging/BurningGrade 2 (moderate)35 participants
ALA-PDTStinging/BurningGrade 3 (severe)0 participants
VehicleStinging/BurningGrade 3 (severe)0 participants
VehicleStinging/BurningGrade 0 (none)130 participants
VehicleStinging/BurningGrade 2 (moderate)0 participants
VehicleStinging/BurningGrade 1 (mild)4 participants
Other Pre-specified

Stinging/Burning

STINGING AND BURNING SCALE Grade 0 = None Grade 1 = Minimal, barely perceptible -tolerable and little discomfort Grade 2 = Moderate - tolerable, but causes some discomfort Grade 3 = Severe - very uncomfortable or intolerable

Time frame: 24-48 Hours after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTStinging/BurningGrade 0 (none)107 participants
ALA-PDTStinging/BurningGrade 1 (mild)23 participants
ALA-PDTStinging/BurningGrade 2 (moderate)5 participants
ALA-PDTStinging/BurningGrade 3 (severe)0 participants
VehicleStinging/BurningGrade 3 (severe)0 participants
VehicleStinging/BurningGrade 0 (none)132 participants
VehicleStinging/BurningGrade 2 (moderate)0 participants
VehicleStinging/BurningGrade 1 (mild)2 participants
Other Pre-specified

Stinging/Burning

STINGING AND BURNING SCALE Grade 0 = None Grade 1 = Minimal, barely perceptible -tolerable and little discomfort Grade 2 = Moderate - tolerable, but causes some discomfort Grade 3 = Severe - very uncomfortable or intolerable

Time frame: 2 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTStinging/BurningGrade 0 (none)131 ITT
ALA-PDTStinging/BurningGrade 1 (mild)3 ITT
ALA-PDTStinging/BurningGrade 2 (moderate)0 ITT
ALA-PDTStinging/BurningGrade 3 (severe)1 ITT
VehicleStinging/BurningGrade 3 (severe)0 ITT
VehicleStinging/BurningGrade 0 (none)134 ITT
VehicleStinging/BurningGrade 2 (moderate)0 ITT
VehicleStinging/BurningGrade 1 (mild)0 ITT
Other Pre-specified

Stinging/Burning

STINGING AND BURNING SCALE Grade 0 = None Grade 1 = Minimal, barely perceptible -tolerable and little discomfort Grade 2 = Moderate - tolerable, but causes some discomfort Grade 3 = Severe - very uncomfortable or intolerable

Time frame: 4 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTStinging/BurningGrade 0 (none)132 participants
ALA-PDTStinging/BurningGrade 1 (mild)2 participants
ALA-PDTStinging/BurningGrade 2 (moderate)1 participants
ALA-PDTStinging/BurningGrade 3 (severe)0 participants
VehicleStinging/BurningGrade 3 (severe)0 participants
VehicleStinging/BurningGrade 0 (none)132 participants
VehicleStinging/BurningGrade 2 (moderate)0 participants
VehicleStinging/BurningGrade 1 (mild)0 participants
Other Pre-specified

Stinging/Burning

STINGING AND BURNING SCALE Grade 0 = None Grade 1 = Minimal, barely perceptible -tolerable and little discomfort Grade 2 = Moderate - tolerable, but causes some discomfort Grade 3 = Severe - very uncomfortable or intolerable

Time frame: 8 Weeks after PDT #1

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTStinging/BurningGrade 0 (none)130 participants
ALA-PDTStinging/BurningGrade 1 (mild)2 participants
ALA-PDTStinging/BurningGrade 2 (moderate)0 participants
ALA-PDTStinging/BurningGrade 3 (severe)0 participants
VehicleStinging/BurningGrade 3 (severe)0 participants
VehicleStinging/BurningGrade 0 (none)129 participants
VehicleStinging/BurningGrade 2 (moderate)0 participants
VehicleStinging/BurningGrade 1 (mild)0 participants
Other Pre-specified

Stinging/Burning

STINGING AND BURNING SCALE Grade 0 = None Grade 1 = Minimal, barely perceptible -tolerable and little discomfort Grade 2 = Moderate - tolerable, but causes some discomfort Grade 3 = Severe - very uncomfortable or intolerable

Time frame: Baseline

Population: ITT

ArmMeasureGroupValue (NUMBER)
ALA-PDTStinging/BurningGrade 0 (none)134 participants
ALA-PDTStinging/BurningGrade 1 (mild)1 participants
ALA-PDTStinging/BurningGrade 2 (moderate)0 participants
ALA-PDTStinging/BurningGrade 3 (severe)0 participants
VehicleStinging/BurningGrade 3 (severe)0 participants
VehicleStinging/BurningGrade 0 (none)133 participants
VehicleStinging/BurningGrade 2 (moderate)1 participants
VehicleStinging/BurningGrade 1 (mild)0 participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026