Imiquimod to Detect Residual Lesions and Prevent Recurrence of Lentigo Maligna

Lentigo Maligna Clinical Trial

Official title:

An Open Monocentric Pilot Study to Investigate the Potential of Imiquimod 5% Cream to Detect Residual and to Prevent Recurrence of Lentigo Maligna After Surgical Excision

Clinical Trial Details — Status: Active, not recruiting

Administrative data

• NCT number: NCT01088737
• Other study ID #: Trial Photoderm Graz 2010-1
• Status: Active, not recruiting
• Phase: Phase 2/Phase 3
• Start date: January 2011
• Est. completion date: December 2021

Study information

• Verified date: August 2019
• Source: Medical University of Graz
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This is a prospective, longitudinal, uncontrolled study with follow-up for 5 years.Patients having undergone surgical excision of lentigo maligna (LM) or lentigo maligna melanoma (LMM) will be invited to this study. Eligible patients will start treatment with imiquimod 6 weeks after the excision, the treatment will last for up to 12 weeks. Inflammatory reactions and the occurrence of residual lesions will be documented. The healing effect will be determined (initial clearance rate) 20 weeks after start of treatment with imiquimod. All patients who were enrolled (=exposed to imiquimod in this study) will be followed up for 5 years or until recurrence of the LM or LMM

Description:

Imiquimod (Aldara) 5% cream will be applied starting 6 weeks post-surgery to an area within 5 cm of treatment margins to each side of the original scar of the LM or LMM excision. Time period between removal of stitches and first administration of imiquimod should be 4 weeks, correspondent to approximate 6 weeks post surgery. Imiquimod cream is applied once daily. Each patient will begin with the application 3x/week. After two weeks of treatment the inflammation response to imiquimod will be assessed. If no or only minor inflammation is detectable in the treatment area, the dosing schedule will be increased to 5x/week. After four weeks of treatment the inflammation response will be assessed again. If still no or only minor inflammation is detectable, application will be extended to daily use. An interruption of the treatment with imiquimod cream is considered if severe local inflammatory reaction occurs, severe systemic reactions are apparent or if super-infection is observed at the treatment area. The primary objective of the study is to investigate the potential of imiquimod 5% cream to eliminate possible subclinical lesions of LM that resides after surgical excision by determining the long-term recurrence rates. Secondary objectives of the study describe the incidence of subclinical residual lesions and local skin reactions.

Recruitment information / eligibility

• Status: Active, not recruiting
• Enrollment: 60
• Est. completion date: December 2021
• Est. primary completion date: December 2021
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Age > 18 years

• Having undergone surgical excision of LM or LMM

• Positive histological finding of LM or LMM (positive histology of primary excision)

Exclusion Criteria:

• History of allergic reaction to imiquimod or its excipients.

• Pregnancy, breast-feeding or planned pregnancy during the study and women of child-bearing potential not using adequate contraception. Women of child bearing potential not using a highly effective method of birth control defined as those which result in a low failure rate (i.e. <1% per year) when used consistently and correctly such as implants, injectables, combined oral contraceptives, hormonal IUDs, tubal ligation or vasectomised partner

• History of malignant melanoma having metastasised or where metastasis could be expected

• Other malignant tumours in the study treatment area (exception actinic keratosis (AK))

• Lack of ability or willingness to give informed consent

• Lack of willingness to have personal study related data collected, archived or transmitted according to protocol

• Anticipated non-availability for study visits/procedures

Related Conditions & MeSH terms

• Lentigo
• Lentigo Maligna
• Recurrence

Intervention

Drug:
• Imiquimod
Imiquimod 5% cream is applied once daily. Each patient will begin with the application 3x/week. After two weeks of treatment the inflammation response to imiquimod will be assessed. If no or only minor inflammation is detectable in the treatment area, the dosing schedule will be increased to 5x/week. After four weeks of treatment the inflammation response will be assessed again. If still no or only minor inflammation is detectable, application will be extended to daily use.

Locations

Country	Name	City	State
Austria	Medical University of Graz	Graz
Austria	Medical University of Graz, Dept. Dermatology	Graz

Sponsors (1)

Lead Sponsor	Collaborator
Medical University of Graz

Country where clinical trial is conducted

Austria, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Elimination of possible subclinical lesions of LM that resides after surgical excision by determining the long-term recurrence rates.		60 months
Secondary	Incidence of subclinical residual lesions and local skin reactions.		20 weeks