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      Diphencyprone as a therapeutic option in cutaneous metastasis of melanoma. A single-institution experience*

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          Abstract

          Diphencyprone has been reported as a local immunotherapy for cutaneous melanoma metastases. We aim to report cases of melanoma patients treated with diphencyprone in a single Brazilian institution and highlight their outcomes. Since 2012, we have treated 16 melanoma patients with cutaneous metastases with topical diphencyprone. To date, we have had 37.5% of complete response, 25% of partial responses, and 31.25% patients without any response. Treatment was well tolerated and local toxicity was easily controlled. We believe topical diphencyprone is a feasible treatment that can be another option for treating melanoma patients, especially in cases of in-transit or extensive disease.

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          Topical immunotherapy with diphencyprone for in transit and cutaneously metastatic melanoma.

          Topical diphencyprone (DPCP) can be used to treat in transit and cutaneously metastastatic melanoma. To date, 50 patients have received DPCP therapy for at least 1 month at our institution, with complete clearance of cutaneous disease in 46% and partial response in a further 38% of patients. Topical immunotherapy with DPCP is inexpensive and well-tolerated and should be considered in patients with skin metastases unsuitable for or refractory to other forms of therapy.
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            Topical diphencyprone immunotherapy for cutaneous metastatic melanoma.

            Topical immunotherapy with contact sensitizers for metastatic melanoma was first reported more than 30 years ago. Diphencyprone (DPCP) immunotherapy is frequently used to treat cutaneous warts and alopecia areata, and we have previously reported the use of DPCP as a single agent to successfully treat extensive, radiotherapy-resistant melanoma metastases on the scalp. We now report DPCP treatment of a further six patients with cutaneous metastatic melanoma. Of seven patients treated with DPCP thus far, four have demonstrated complete responses of their cutaneous lesions and three have had partial responses. The treatment was well-tolerated by all patients. Topical immunotherapy with DPCP is inexpensive and relatively non-invasive and should be considered in patients with locally advanced skin metastases that are unsuitable for other therapies.
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              Contact immunotherapy enhances the therapeutic effects of nivolumab in treating in-transit melanoma: Two cases reports.

              Because nivolumab significantly prolongs survival in patients with metastatic melanoma, enhancing its antitumor immune response is of great interest to dermato-oncologists. In this report, we describe two cases of metastatic melanoma successfully treated with nivolumab in combination with contact immunotherapy, using contact sensitizing agents, such as squaric acid dibutylester and diphencyprone. In addition, immunohistochemical staining supported one of the possible mechanisms of this combination therapy. Our present cases suggested a possible therapy for metastatic melanoma using nivolumab in combination with contact immunotherapy.
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                Author and article information

                Journal
                An Bras Dermatol
                An Bras Dermatol
                abd
                Anais Brasileiros de Dermatologia
                Sociedade Brasileira de Dermatologia
                0365-0596
                1806-4841
                Mar-Apr 2018
                Mar-Apr 2018
                : 93
                : 2
                : 299-301
                Affiliations
                [1 ] Skin Cancer Center - AC Camargo Cancer Center - São Paulo (SP), Brazil.
                [2 ] Oncology Residency Training Program - AC Camargo Cancer Center - São Paulo (SP), Brazil.
                [3 ] Department of Pathology - AC Camargo Cancer Center - São Paulo (SP), Brazil.
                Author notes
                Mailing address: Eduardo Bertolli. E-mail: ebertolli@ 123456hotmail.com
                Article
                10.1590/abd1806-4841.20187162
                5916415
                29723355
                0e2670fa-1956-48d4-88ff-e478cef7d155

                This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivative License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium provided the original work is properly cited and the work is not changed in any way.

                History
                : 12 April 2017
                : 19 July 2017
                Categories
                Communication

                melanoma,neoplasm metastasis,therapeutics
                melanoma, neoplasm metastasis, therapeutics

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