Generation of an Artificial Intelligence Algorithm Based on the Analysis of Melanoma Peri-scar Dermatoheliosis, as a Predictive Factor of Response to Anti-PD-1

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Total Enrollment

700 participants

Study Classification

OBSERVATIONAL

Study Start Date

2023-07-24

Study Completion Date

2028-07-24

Brief Summary

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In the last decade, the advent of immunotherapies with inhibitors of immune checkpoints, such as anti-PD-1 and anti-CTLA-4, has revolutionized the treatment of advanced or metastatic melanoma. However, the clinical benefit remains limited to a subset of patients. Identifying the patients most likely to benefit from these novel therapies (and avoiding unnecessary toxicity in non-responding patients) is therefore critical. Previous studies found a significant link between the high mutational load of a tumor (TMB) and its response to anti-PD-1 monotherapy, regardless of the histological type of cancer. Unfortunately, TMB measurement is expensive, and requires extensive sequencing approaches difficult to implement in clinical practice. I have shown that melanomas known to be secondary to mutagenic ultraviolet rays (UVR) often carry a high TMB. The cumulative UVR damage translates into visible stigmas termed "dermatoheliosis" on patients' skin, easy to recognize with the naked eye of the clinician around the scar of the primary melanoma. My project proposes to establish, for the first time, dermatoheliosis as a novel predictive factor of response to anti-PD-1 immunotherapy, to be used within multidisciplinary tumor boards as a powerful decision-support tool to select the best treatment option. Specifically, I will 1) develop, validate and test in a prospective manner, an artificial intelligence (AI)-based algorithm, to assess features of pericicatricial dermatoheliosis based on a collection of photographs obtained from patients with unresectable locally advanced or metastatic melanoma 2) demonstrate the link between dermatoheliosis, TMB, immune and treatment response by characterizing pericicatricial skin single cell transcriptomics, as well as tumor DNA, RNA and host immunological profiles of the patients. This directly accessible, non-invasive, surrogate marker for TMB will be a game changer in clinical practice and will subsequently be translated to other skin cancers.

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Detailed Description

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Conditions

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Metastatic Melanoma

Study Design

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Observational Model Type

COHORT

Study Time Perspective

OTHER

Study Groups

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Retrospective

Photograph

Photo

Intervention Type OTHER

Photography intake

Prospective

Photo

Intervention Type OTHER

Photography intake

Interventions

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Photo

Photography intake

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Adult patients with inoperable stage III or IV melanoma, or inoperable skin carcinoma (cutaneous squamous cell carcinoma or basal cell carcinoma)
* Retrospective cohort: patients who received systemic treatment for their inoperable skin cancer for at least 3 months, with at least 6 months of follow-up, without immunosuppression and whose site of the primary tumor is not altered by a concomitant dermatosis
* Prospective cohort: Patients naïve to immunotherapy for the management of their melanoma at the introduction of systemic treatment. Adjuvant immunotherapy tolerated if it has been stopped for at least 6 months before starting the curative treatment
* Patients who have expressed their agreement to participate in the research and who have signed an image rights authorization

Exclusion Criteria

* Retrospective cohort: Patients who received their systemic skin cancer treatment for less than 90 days
* Patients who received adjuvant immunotherapy in the 6 months preceding the curative treatment
* Patients whose primary skin cancer site cannot be photographed (example of choroidal melanomas, mucosal melanomas except for melanomas with a vulvar or penile starting point, etc.)
* Patients treated with systemic corticosteroids (dose greater than 10 mg/day) at the introduction of the immunotherapy under consideration
* Immunocompromised patients (associated blood disease, human immunodeficiency virus infection, transplant patient, etc.)
* Patients with iatrogenic peri-scarring vitiligo
* Patients who refused to participate in the research
* Adults protected by law
* Pregnant women

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No