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The AP-GELP Study: A Clinical Trial on the Effects of Apremilast in Female Genital Erosive Lichen Planus

The AP-GELP Study: A Randomized, Placebo-Controlled Clinical Trial on the Effects of Phosphodiesterase 4-Inhibitor Apremilast in Female Genital Erosive Lichen Planus

Status
UNKNOWN
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03656666
Enrollment
42
Registered
2018-09-04
Start date
2019-09-24
Completion date
2023-12-31
Last updated
2023-03-29

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

Conditions

Female Genital Disease, Lichen Planus of Vulva

Keywords

apremilast, genital erosive lichen planus

Brief summary

Genital erosive lichen planus (GELP) is a chronic inflammatory disease causing painful genital sores and scarring in women. Treatment options are limited and often unsatisfactory. This trial will study the effects of treatment with apremilast and quality of life and sexual function in women with GELP.

Detailed description

Genital erosive lichen planus (GELP) is a chronic, inflammatory and scarring genital disease. The disease may have a significant impact on daily living, quality of life and sexual function. There is a considerable lack of high-quality evidence on treatment options for GELP and few effective therapeutic facilities available in current clinical practice. The aims of this study are to investigate clinical and immunohistochemical effects of a new oral anti-inflammatory treatment, apremilast, for women with moderate-to-severe GELP in a double-blinded, randomized, placebo-controlled trial (RCT). Apremilast is an inhibitor of phosphodiesterase 4 (PDE4) with documented effect in several inflammatory skin diseases, but it has not yet been studied in patients with GELP. The drug dose and study design have been chosen based on relevant experience from other studies on apremilast, and is equivalent to the dose used for approved indications (chronic plaque psoriasis and psoriatic arthritis). The main objective of this trial is to assess the efficacy of apremilast in the treatment of GELP in women. Secondary objectives include * Description of immunohistochemical changes in lichen planus lesions * Assessment of safety of apremilast in the treatment of GELP * Assessment of quality of life and sexual function

Interventions

DRUGApremilast

Apremilast oral tablets

DRUGPlacebo

Placebo oral tablets

Sponsors

Celgene Corporation
CollaboratorINDUSTRY
Amgen
CollaboratorINDUSTRY
Oslo University Hospital
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)

Intervention model description

Double-blinded, randomized, placebo-controlled trial

Eligibility

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

Inclusion criteria

* Moderate to severe GELP at inclusion with the diagnosis based on characteristic clinical and/or histological features. Minimum GELP score 5/30 in vagina and/or vulva (scored separately), of which erythema and pain ≥1 are mandatory * Informed consent from the patient to the protocol and clinical procedures.

Exclusion criteria

* Patients receiving other systemic immune modulating therapy * Concomitant use of strong CYP3A4 enzyme inducers * Inadequate birth control, pregnancy and/or breast-feeding * Depression and suicidal ideation * Patients with severe renal impairment * Patients with active tuberculosis, serious infections or cancer * Unexplained and clinically significant weight loss in underweight patients * Hypersensitivity to the active substance(s) or to any of the excipients * Hereditary problems of galactose intolerance, lactase deficiency or glucose-galactose malabsorption * Participating in another trial that might affect the current study or there should be minimum 90 days between participation in another intervention trial

Design outcomes

Primary

MeasureTime frameDescription
Mean GELP score at week 24 in apremilast-treated patients versus placebo-treated patients24 weeksThe GELP (Genital Erosive Lichen Planus) score is a scoring system for clinical assessment of genital erosive lichen planus (GELP) in women. Area of genital involvement, erythema, striae, number of erosions and pain are registered and scored 0-3 (0 is none) for each parameter. Vulval and vaginal involvement is assessed separately, resulting in a maximum GELP score of 30.

Secondary

MeasureTime frameDescription
Separate GELP score assessments: Intensity of erythema24 weeksRange 0-3 (none=0, mild=1, moderate=2, strong=3). Recorded as part of the GELP score at time points specified in the protocol.
Patient Global Assessment (PtGA)24 weeks5-point disease severity scoring system, assessed by the patient at time points specified in the protocol (0=clear, 1=almost clear, 2=mild, 3=moderate, 4=severe).
DLQI score24 weeksThe Dermatology Life Quality Index (DLQI) is a 10-question validated questionnaire. Each question is scored 0-3, with a maximum score of 30. The higher the score, the more quality of life is impaired. The time points for DLQI score are specified in the protocol.
GHQ-28 score24 weeksGHQ-28 is a 28-item version of the General Health Questionnaire (GHQ) subdivided into somatic symptoms, anxiety/insomnia, social dysfunction and severe depression. Each question is scored 0-1. The higher the score, the more severe the condition.The time points for GHQ-28 score are specified in the protocol.
Sexual function assessments24 weeksThe Female Sexual Distress Scale - Revised (FSDS-R) is a 13-item questionnaire used for sexual function assessment. Each question is scored 0-4. The total score range is 0-52, with higher scores indicating more sexually related distress.
Mean GELP score improvement from week 0 to week 24 in all patients24 weeksThe GELP (Genital Erosive Lichen Planus) score is a scoring system for clinical assessment of genital erosive lichen planus (GELP) in women. Area of genital involvement, erythema, striae, number of erosions and pain are registered and scored 0-3 (0 is none) for each parameter. Vulval and vaginal involvement is assessed separately, resulting in a maximum GELP score of 30.
Weekly use of topical steroid, collected from patient diary24 weeksFrequency of application is recorded once a week in the patient diary as the number of days being used per week
Weekly VAS pain score, collected from patient diary24 weeksVAS is recorded once a week in the patient diary using a visual linear scale of 100mm ranging from 0 (no pain) to 10 (worst imaginable pain).
Number of patients with GELP score improvement at week 16 and 2424 weeksThe GELP (Genital Erosive Lichen Planus) score is a scoring system for clinical assessment of genital erosive lichen planus (GELP) in women. Area of genital involvement, erythema, striae, number of erosions and pain are registered and scored 0-3 (0 is none) for each parameter. Vulval and vaginal involvement is assessed separately, resulting in a maximum GELP score of 30.
Separate GELP score assessments: Area of involvement (in cm²)24 weeksRange 0-3 (none=0, \<3 cm²=1, 3-6 cm²=2, \>6 cm²=3). Recorded as part of the GELP score at time points specified in the protocol.
Separate GELP score assessments: Number of erosions24 weeksRange 0-3 (none=0, 1=1, 2-3=2, \>3=3). Recorded as part of the GELP score at time points specified in the protocol.
Separate GELP score assessments: Striae24 weeksRange 0-3 (none=0, minimal=1, moderate=2, extensive=3). Recorded as part of the GELP score at time points specified in the protocol.
Separate GELP score assessments: Pressure-induced pain (VAS)24 weeksPatient-reported pain is induced by pressuring the involved area with a cotton swab, using a visual linear scale of 100mm ranging from 0 (no pain) to 10 (worst imaginable pain). GELP score range 0-3 (no pain=0, VAS 1-3=1, VAS 4-6=2,VAS 7-10=3). Recorded as part of the GELP score at time points specified in the protocol.
Physician Global Assessment (PGA)24 weeks5-point disease severity scoring system, assessed by the clinician at time points specified in the protocol (0=clear, 1=almost clear, 2=mild, 3=moderate, 4=severe).

Other

MeasureTime frameDescription
Evaluation of clinical photos24 weeksClinical photos of lichen planus lesions are taken by a medical photographer at week 0 and 24
Adverse events24 weeksAdverse events are registered at time point described in the protocol
Description of extragenital lichen planus at week 0, 16 and 2424 weeksExtragenital lichen planes is described and compared at 0,16 and 24 weeks
Description of immune histochemical changes and expression of selected cytokines before and after apremilast therapy, assessed in vulvar or vaginal biopsies24 weeksAsessment in biopsies at week 0 and 24

Countries

Norway

Outcome results

None listed

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