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Completed

NCT Number: NCT01449513

PEP005 Gel - Biological Effects in Actinic Keratosis Assessed by Reflectance Confocal Microscopy

This trial will be conducted to explore the biological effects in the skin following treatment with PEP005 Gel, 0.05% administered for two consecutive days, assessed by reflectance confocal microscopy.

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Key information

Conditions

Actinic Keratosis Keratosis Keratosis, Actinic Neoplasms Precancerous Conditions Skin Diseases Skin and Connective Tissue Diseases

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 1

Primary location

Charité - Universitätsmedizin Berlin

Berlin, 10117, Germany

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Male or female subjects at least 18 years of age
  • Subjects with AK lesions and subclinical AK lesions within a contiguous 25 cm2 area on the upper extremity
  • Subjects must have a 25 cm2 area of normal skin on the inner upper arm
  • Female subjects must be of either:• Non-childbearing potential, post-menopausal, or have a confirmed clinical history of sterility or • Childbearing potential, with a confirmed negative urine pregnancy test prior to exposure.
  • Female subjects of childbearing potential must be willing to consent to using high effective methods of contraception
  • Ability to follow trial instructions and likely to complete all trial requirements
  • Obtained written informed consent prior to any trial-related procedures

Exclusion criteria

  • Location of the selected treatment areas:• Within 5 cm of an incompletely healed wound or infected area of the skin • Within 10 cm of a suspected basal cell carcinoma (BCC) or squamous cell carcinoma(SCC)
  • History or evidence of skin conditions other than the trial indication that would interfere with evaluation of the investigational product
  • Clinical diagnosis/history or evidence of any medical condition that would expose a subject to an undue risk of a significant AE or interfere with assessments of safety during the course of the trial, as determined by Investigator clinical judgment
  • Anticipated need for in-patient hospitalisation or in-patient surgery during the trial period.
  • Current participation in any other interventional clinical trial
  • Subjects who have received treatment with any non-marketed drug product within the last two months
  • Previous enrolment in this clinical trial
  • Prohibited Therapies and/or Medications 2 weeks prior to the Screening visit within 2 cm of selected treatment area:•Cosmetic or therapeutic procedures •Use of acid-containing therapeutic products • Use of topical salves or topical steroids
  • Prohibited Therapies and/or Medications: within 4 weeks prior to the Screening visit: • Treatment with immunomodulators, cytotoxic drugs or interferon/interferon inducers,systemic medications that suppress the immune system, or with UVB
  • Prohibited Therapies and/or Medications: within 8 weeks prior to the Screening visit: • Treatment with 5-FU, imiquimod, diclofenac, or photodynamic therapy: within 2 cm of the selected treatment areas.
  • Use of systemic retinoids

Treatment and study plan

Ingenol Mebutate

Drug

0.05% Ingenol mebutate Gel once daily for 2 consecutive days

Other names: PEP005

Placebo Gel

Drug

Gel vehicle of PEP005

Primary outcomes

  1. Change in Degree of Infiltration

    Time frame: Baseline to Day 2

    Change from baseline in the degree of infiltration of the epidermis by inflammatory cells following treatment with ingenol mebutate gel, 0.05% as assessed by Reflectance Confocal Microscopy (RCM) in actinic keratosis (AK) skin.This RCM imaging technique is a relatively new non-invasive, real-time evaluation method to generate horizontal skin sections at a resolution comparable to routine histology.

    The degree of infiltration of the epidermis by inflammatory cells will be based on "inflammation/small bright cells" (grading 0-3) as assessed by RCM from baseline across the trial period for the subjects receiving PEP005 Gel. The degree of infiltration of the dermis by inflammatory cells will be based on "inflammatory cells in the dermis" (grading 0-3) as assessed by RCM from baseline across the trial period for the subjects receiving PEP005 Gel.

  2. Change in Degree of Infiltration

    Time frame: Baseline to Day 2

    Change from baseline in the degree of infiltration of the epidermis by inflammatory cells following treatment with ingenol mebutate gel, 0.05% as assessed by Reflectance Confocal Microscopy (RCM) in Sub actinic keratosis (AK) skin.

    The degree of infiltration of the epidermis by inflammatory cells will be based on "inflammation/small bright cells" (grading 0-3) as assessed by RCM from baseline across the trial period for the subjects receiving PEP005 Gel. The degree of infiltration of the dermis by inflammatory cells will be based on "inflammatory cells in the dermis" (grading 0-3) as assessed by RCM from baseline across the trial period for the subjects receiving PEP005 Gel.

  3. Change in Degree of Infiltration

    Time frame: Baseline to Day 2

    Change from baseline in the degree of infiltration of the epidermis by inflammatory cells following treatment with ingenol mebutate gel, 0.05% as assessed by RCM (Reflectance Confocal Microscopy) in normal skin.

    The degree of infiltration of the epidermis by inflammatory cells will be based on "inflammation/small bright cells" (grading 0-3) as assessed by RCM from baseline across the trial period for the subjects receiving PEP005 Gel. The degree of infiltration of the dermis by inflammatory cells will be based on "inflammatory cells in the dermis" (grading 0-3) as assessed by RCM from baseline across the trial period for the subjects receiving PEP005 Gel.

  4. Change in Degree of Infiltration

    Time frame: Baseline to Day 3

    Change from baseline in the degree of infiltration of the epidermis by inflammatory cells following treatment with ingenol mebutate gel, 0.05% as assessed by RCM (Reflectance Confocal Microscopy) in AK (actinic keratosis) skin

  5. Change in Degree of Infiltration

    Time frame: Baseline to Day 3

    Change from baseline in the degree of infiltration of the epidermis by inflammatory cells following treatment with ingenol mebutate gel, 0.05% as assessed by RCM (Reflectance Confocal Microscopy) in Sub AK (actinic keratosis) skin.

    The degree of infiltration of the epidermis by inflammatory cells will be based on "inflammation/small bright cells" (grading 0-3) as assessed by RCM from baseline across the trial period for the subjects receiving PEP005 Gel. The degree of infiltration of the dermis by inflammatory cells will be based on "inflammatory cells in the dermis" (grading 0-3) as assessed by RCM from baseline across the trial period for the subjects receiving PEP005 Gel.

  6. Change in Degree of Infiltration

    Time frame: Baseline to Day 3

    Change from baseline in the degree of infiltration of the epidermis by inflammatory cells following treatment with ingenol mebutate gel, 0.05% as assessed by RCM (Reflectance Confocal Microscopy) in normal skin

    The degree of infiltration of the epidermis by inflammatory cells will be based on "inflammation/small bright cells" (grading 0-3) as assessed by RCM from baseline across the trial period for the subjects receiving PEP005 Gel. The degree of infiltration of the dermis by inflammatory cells will be based on "inflammatory cells in the dermis" (grading 0-3) as assessed by RCM from baseline across the trial period for the subjects receiving PEP005 Gel.

  7. Change in Degree of Infiltration

    Time frame: Baseline to Day 8

    Change from baseline in the degree of infiltration of the epidermis by inflammatory cells following treatment with ingenol mebutate gel, 0.05% as assessed by RCM (Reflectance Confocal Microscopy) in AK (actinic keratosis) skin

    The degree of infiltration of the epidermis by inflammatory cells will be based on "inflammation/small bright cells" (grading 0-3) as assessed by RCM from baseline across the trial period for the subjects receiving PEP005 Gel. The degree of infiltration of the dermis by inflammatory cells will be based on "inflammatory cells in the dermis" (grading 0-3) as assessed by RCM from baseline across the trial period for the subjects receiving PEP005 Gel.

  8. Change in Degree of Infiltration

    Time frame: Baseline to Day 8

    Change from baseline in the degree of infiltration of the epidermis by inflammatory cells following treatment with ingenol mebutate gel, 0.05% as assessed by RCM (Reflectance Confocal Microscopy) in Sub AK (actinic keratosis) skin

    The degree of infiltration of the epidermis by inflammatory cells will be based on "inflammation/small bright cells" (grading 0-3) as assessed by RCM from baseline across the trial period for the subjects receiving PEP005 Gel. The degree of infiltration of the dermis by inflammatory cells will be based on "inflammatory cells in the dermis" (grading 0-3) as assessed by RCM from baseline across the trial period for the subjects receiving PEP005 Gel.

  9. Change in Degree of Infiltration

    Time frame: Baseline to Day 8

    Change from baseline in the degree of infiltration of the epidermis by inflammatory cells following treatment with ingenol mebutate gel, 0.05% as assessed by RCM (Reflectance Confocal Microscopy) in normal skin

    The degree of infiltration of the epidermis by inflammatory cells will be based on "inflammation/small bright cells" (grading 0-3) as assessed by RCM from baseline across the trial period for the subjects receiving PEP005 Gel. The degree of infiltration of the dermis by inflammatory cells will be based on "inflammatory cells in the dermis" (grading 0-3) as assessed by RCM from baseline across the trial period for the subjects receiving PEP005 Gel.

  10. Change in Degree of Infiltration

    Time frame: Baseline to Day 57

    Change from baseline in the degree of infiltration of the epidermis by inflammatory cells following treatment with ingenol mebutate gel, 0.05% as assessed by RCM (Reflectance Confocal Microscopy) in AK (actinic keratosis) skin

    The degree of infiltration of the epidermis by inflammatory cells will be based on "inflammation/small bright cells" (grading 0-3) as assessed by RCM from baseline across the trial period for the subjects receiving PEP005 Gel. The degree of infiltration of the dermis by inflammatory cells will be based on "inflammatory cells in the dermis" (grading 0-3) as assessed by RCM from baseline across the trial period for the subjects receiving PEP005 Gel.

  11. Change in Degree of Infiltration

    Time frame: Baseline to Day 57

    Change from baseline in the degree of infiltration of the epidermis by inflammatory cells following treatment with ingenol mebutate gel, 0.05% as assessed by RCM (Reflectance Confocal Microscopy) in Sub AK (actinic keratosis) skin

    The degree of infiltration of the epidermis by inflammatory cells will be based on "inflammation/small bright cells" (grading 0-3) as assessed by RCM from baseline across the trial period for the subjects receiving PEP005 Gel. The degree of infiltration of the dermis by inflammatory cells will be based on "inflammatory cells in the dermis" (grading 0-3) as assessed by RCM from baseline across the trial period for the subjects receiving PEP005 Gel.

  12. Change in Degree of Infiltration

    Time frame: Baseline to Day 57

    Change from baseline in the degree of infiltration of the epidermis by inflammatory cells following treatment with ingenol mebutate gel, 0.05% as assessed by RCM (Reflectance Confocal Microscopy) in normal skin

    The degree of infiltration of the epidermis by inflammatory cells will be based on "inflammation/small bright cells" (grading 0-3) as assessed by RCM from baseline across the trial period for the subjects receiving PEP005 Gel. The degree of infiltration of the dermis by inflammatory cells will be based on "inflammatory cells in the dermis" (grading 0-3) as assessed by RCM from baseline across the trial period for the subjects receiving PEP005 Gel.

  13. Change in Degree of Necrosis

    Time frame: Baseline to Day 2

    Change from baseline in the degree of necrosis in the epidermis following treatment with ingenol mebutate gel, 0.05% as assessed by RCM (Reflectance Confocal Microscopy) in AK (actinic keratosis) skin

  14. Change in Degree of Necrosis

    Time frame: Baseline to Day 2

    Change from baseline in the degree of necrosis in the epidermis following treatment with ingenol mebutate gel, 0.05% as assessed by RCM (Reflectance Confocal Microscopy) in Sub AK (actinic keratosis) skin

  15. Change in Degree of Necrosis

    Time frame: Baseline to Day 2

    Change from baseline in the degree of necrosis in the epidermis following treatment with ingenol mebutate gel, 0.05% as assessed by RCM (Reflectance Confocal Microscopy) in normal skin

  16. Change in Degree of Necrosis

    Time frame: Baseline to Day 3

    Change from baseline in the degree of necrosis in the epidermis following treatment with ingenol mebutate gel, 0.05% as assessed by RCM(Reflectance Confocal Microscopy) in AK (actinic keratosis) skin

  17. Change in Degree of Necrosis

    Time frame: Baseline to Day 3

    Change from baseline in the degree of necrosis in the epidermis following treatment with ingenol mebutate gel, 0.05% as assessed by RCM (Reflectance Confocal Microscopy) in Sub AK (actinic keratosis) skin

  18. Change in Degree of Necrosis

    Time frame: Baseline to Day 3

    Change from baseline in the degree of necrosis in the epidermis following treatment with ingenol mebutate gel, 0.05% as assessed by RCM (Reflectance Confocal Microscopy) in normal skin

  19. Change in Degree of Necrosis

    Time frame: Baseline to Day 8

    Change from baseline in the degree of necrosis in the epidermis following treatment with ingenol mebutate gel, 0.05% as assessed by RCM (Reflectance Confocal Microscopy) in AK (actinic keratosis) skin

  20. Change in Degree of Necrosis

    Time frame: Baseline to Day 8

    Change from baseline in the degree of necrosis in the epidermis following treatment with ingenol mebutate gel, 0.05% as assessed by RCM (Reflectance Confocal Microscopy) in Sub AK (actinic keratosis) skin

  21. Change in Degree of Necrosis

    Time frame: Baseline to Day 8

    Change from baseline in the degree of necrosis in the epidermis following treatment with ingenol mebutate gel,0.05% as assessed by RCM (Reflectance Confocal Microscopy) in normal skin

  22. Change in Degree of Necrosis

    Time frame: Baseline to Day 57

    Change from baseline in the degree of necrosis in the epidermis following treatment with ingenol mebutate gel, 0.05% as assessed by RCM (Reflectance Confocal Microscopy) in AK (actinic keratosis) skin

  23. Change in Degree of Necrosis

    Time frame: Baseline to Day 57

    Change from baseline in the degree of necrosis in the epidermis following treatment with ingenol mebutate gel, 0.05% as assessed by RCM (Reflectance Confocal Microscopy) in Sub AK (actinic keratosis) skin

  24. Change in Degree of Necrosis

    Time frame: Baseline to Day 57

    Change from baseline in the degree of necrosis in the epidermis following treatment with ingenol mebutate gel, 0.05% as assessed by RCM in normal skin

Sponsors and collaborators

Lead sponsor

LEO Pharma

Industry

Registry information

Official study title

A Phase 1, Two-stage, Single-centre, Open Label, Within- and Between-subject Comparison Trial to Explore the Biological Effects of PEP005 (Ingenol Mebutate) Gel, 0.05%, Applied Once Daily for 2 Consecutive Days in Subjects With Actinic Keratosis on the Upper Extrem-ity. A Single-arm First Stage Followed by a Two-arm, Parallel Group, Randomized, Placebo (Vehicle) -Controlled Second Stage

Important dates

Study start
2011
Primary completion
2012
Study completion
2012
First posted
Oct 10, 2011
Registry last updated
Mar 7, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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