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Introduction





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Treatment with Ipilimumab: A Case Report of Complete Response in a Metastatic Malignant Melanoma Patient

Alfredo Addeoa,* and Ciro Roberto Rinaldib

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Abstract

Introduction

Over the past year, 3 agents have been approved for the treatment of melanoma by the Food and Drug Administration. These include pegylated interferon α-2b for stage III melanoma, vemurafenib for unresectable or metastatic melanoma with BRAF V600E mutation, and ipilimumab for unresectable or metastatic melanoma.

Case Presentation

We present here the case of a 65-year-old Caucasian male diagnosed with advanced melanoma in April 2011 and treated with ipilimumab (Yervoy®), a monoclonal antibody targeting cytotoxic T-lymphocyte-associated antigen 4 (CTLA-4), as second-line treatment after progression with dacarbazine, for (wild-type BRAF) metastatic melanoma. The patient was referred to us for several painful lumps on his right arm. A biopsy of one of them revealed melanoma. CT and PET scans did not show any other lesions or a primary site. The patient was started on first-line chemotherapy with dacarbazine 850 mg/m2 on day 1, every 3 weeks. After 3 cycles, the patient showed disease progression with an increase in size of the skin metastasis. Second-line treatment was started with ipilimumab 3 mg/kg on day 1, every 3 weeks. At the end of the treatment, after 4 cycles, we documented a complete clinical response with total resolution of the skin metastasis. At the time of writing this paper, our patient had finished his treatment more than 9 months earlier and is still in complete remission.

Conclusion

This is a paradigmatic case where, despite extensive metastatic disease, treatment with ipilimumab has confirmed its efficacy. It is still an open question why only a minority of patients have such a remarkable response, and further trials are warranted to address this important question.

Key words:Melanoma, Ipilimumab, Complete response

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Introduction

About 200,000 cases of melanoma are diagnosed and 48,000 melanoma-related deaths occur worldwide each year [1]. Among cancers in patients under 40 years of age, the incidence of melanoma is second only to that of breast cancer in women and leukemia in men [2].

Since 2010, a real breakthrough has occurred in advanced melanoma therapy that had been anticipated for decades. Molecular targeted therapy has been added to the treatment regimen of this disease. Before 2010, no systemic therapy had been shown to improve overall survival among patients with metastatic melanoma. Ipilimumab, a monoclonal antibody targeting cytotoxic T-lymphocyte-associated antigen 4 (CTLA-4), and vemurafenib, a selective BRAF inhibitor, have both been shown to improve survival among patients with metastatic melanoma in randomized trials [3, 4, 5].

Here, we present the case of a 65-year-old Caucasian male diagnosed with advanced melanoma in April 2011 and treated with ipilimumab, after dacarbazine failed, for (wildtype BRAF) metastatic disease.

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