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Surgical resection of metastatic melanoma in the era of immunotherapy and targeted therapy.

ABSTRACT: Melanoma is the deadliest form of skin cancer and one of the few malignancies whose incidence is on the rise. The treatment of metastatic melanoma continues to be quite challenging, although in recent years, there has been significant progress. Current National Comprehensive Cancer Network guidelines list immunotherapy, chemotherapy, surgery and clinical trials as potential options for patients with metastatic disease but do not clearly recommend which is superior. Additionally, when utilizing combined modality treatment there are no clear guidelines for the optimal timing of surgery in the treatment of metastatic melanoma. In this paper we sought to compile the current evidence and on-going trials in order to provide a comprehensive review of the different options available and underway in regards to the treatment of metastatic melanoma. It is clear that with the responses now seen with systemic immunotherapies and targeted therapies, an expanded role for surgery is the logical next step.

SUBMITTER: Tyrell R

PROVIDER: S-EPMC6094597 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature

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Surgical resection of metastatic melanoma in the era of immunotherapy and targeted therapy.

Tyrell Richard R Antia Camila C Stanley Sharon S Deutsch Gary B GB

Melanoma management 20170221 1

Melanoma is the deadliest form of skin cancer and one of the few malignancies whose incidence is on the rise. The treatment of metastatic melanoma continues to be quite challenging, although in recent years, there has been significant progress. Current National Comprehensive Cancer Network guidelines list immunotherapy, chemotherapy, surgery and clinical trials as potential options for patients with metastatic disease but do not clearly recommend which is superior. Additionally, when utilizing c ...[more]

PMID: 30190905

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Project description:Opinion statementMelanoma has several clinically and pathologically distinguishable subtypes, which also differ genetically. Mutation patterns vary among different melanoma subtypes, and efficacy of immune-checkpoint inhibitors differs depending on the subtype of melanoma. In spite of the recent revolution of systemic therapies for advanced melanoma, access to innovative agents is still restricted in many countries. This review article aimed to describe the epidemiology and current status of systemic therapies for melanoma in Japan, where melanoma is rare, but access to innovative agents is available. Acral and mucosal melanomas, which are common in Asian populations, predominantly occur in sun-protected areas and share several biological features. Both the melanomas harbor KIT mutation in approximately 15% of the cases; BRAF or NRAS mutation is found in approximately 10-15% of acral melanoma, but these mutations are less frequent in mucosal melanoma. Combined use of BRAF and MEK inhibitors is one of the standards of care for patients with advanced BRAF-mutant melanoma. In patients with melanoma harboring KIT mutation in exon 11 or 13, KIT inhibitors can be a treatment option; however, none of them have been approved in Japan. Immune-checkpoint inhibitors are expected to be less effective against acral and mucosal melanomas because their somatic mutation burden is lower than those in non-acral cutaneous melanomas. A recently completed phase II trial of nivolumab and ipilimumab combination therapy in 30 Japanese patients with melanoma, including seven with acral and 12 with mucosal melanoma, demonstrated an objective response rate of 43%. Regarding oncolytic viruses, canerpaturev (C-REV, also known as HF10) and talimogene laherparepvec (T-VEC) are currently under review in early phase trials. In the adjuvant setting, dabrafenib plus trametinb combination, nivolumab monotherapy, and pembrolizumab monotherapy were approved in July, August, and December 2018 in Japan, respectively. However, most of the adjuvant phase III trials excluded patients with mucosal melanoma. A phase III trial of adjuvant therapy with locoregional interferon (IFN)-β versus surgery alone is ongoing in Japan (JCOG1309, J-FERON), in which IFN-β is injected directly into the site of the primary tumor postoperatively, so that it would be drained through the untreated lymphatic route to the regional node basin. After the recent approval of these new agents, the JCOG1309 trial will be revised to focus on patients with stage II disease. In conclusion, acral and mucosal melanomas have been treated based on the available medical evidence for the treatment of non-acral cutaneous melanomas. Considering the differences in genetic backgrounds and therapeutic efficacy of immunotherapy, specialized therapeutic strategies for these subtypes of melanoma should be established in the future.

Project description:Background:Immunotherapies and targeted therapies have drastically improved survival in metastatic melanoma, but they can cause a range of adverse events (AEs). Understanding the costs of these events would facilitate an accurate comparison of melanoma treatments. Objective:To compare the costs and frequency of AEs associated with immunotherapy and with targeted therapy in elderly patients with metastatic melanoma. Methods:We conducted a retrospective cohort study using Medicare claims data from 2011 to 2014. Patients included had to have ?1 diagnoses of metastatic melanoma and ?1 claims for an immunotherapy or targeted therapy. We compared the 30-day expenditures of patients with and without each AE using a generalized linear model to determine the incremental cost per AE in patients who received immunotherapy or targeted therapy. The baseline demographic and clinical differences were adjusted for using propensity score with inverse probability of treatment. We also compared the mean costs of AEs associated with immunotherapy and targeted therapy. Results:A total of 844 patients were included in the study (mean age, 75 years; standard deviation, 14 years). The mean baseline Charlson Comorbidity Index score was 8.4, and 65% of the patients were male. The mean cost for AEs was highest for respiratory events (ie, $24,150). Gastrointestinal, respiratory, and hematologic AEs were more common in patients who received immunotherapy, whereas general and administration-site AEs and other AEs (eg, fatigue, infections, muscular weakness) were more frequent in patients who received targeted therapy. AE-related costs with immunotherapy were highest for gastrointestinal, respiratory, and pain-related AEs; AEs with targeted therapy were highest for cardiovascular and general and administration-site events. Conclusion:These findings suggest that incremental costs associated with treatment-related AEs among elderly patients with metastatic melanoma were substantial, but the risks for and costs of the various types of AEs differed by therapy. Understanding the risks for and costs of AEs associated with the various therapeutic options can inform treatment decision-making in elderly patients with metastatic melanoma.

Dataset Information

Surgical resection of metastatic melanoma in the era of immunotherapy and targeted therapy.

Publications

Surgical resection of metastatic melanoma in the era of immunotherapy and targeted therapy.

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