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Bravo-Garzón MA, Bornstein-Quevedo L, de Camargo VP, Sanku G, Jansen AM, de Macedo MP, Rico-Restrepo M, Chacón M. BRAF-Mutated Melanoma Journey in Latin America: Expert Recommendations From Diagnosis to Treatment. Cancer Control 2024; 31:10732748241251572. [PMID: 38751033 PMCID: PMC11100406 DOI: 10.1177/10732748241251572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 03/28/2024] [Accepted: 04/10/2024] [Indexed: 05/19/2024] Open
Abstract
OBJECTIVES • Gather a panel of Latin American experts in testing and treating BRAF-melanoma. • Describe the current landscape of BRAF-mutated melanoma in Latin America. • Outline the current gaps in testing and recommend improvements for testing and treating BRAF-mutated melanoma in the region. INTRODUCTION Melanoma prevalence in Latin America is lower than in high- and middle-income countries. However, recent data indicate that the region's incidence and mortality are rising, with more stage IV patients being diagnosed. According to international clinical practice guidelines, conducting BRAF-mutation testing in patients with stage III or stage IV melanoma and high-risk resected disease is imperative. Still, BRAF-mutation testing and targeted therapies are inconsistently available in the region. METHODS Americas Health Foundation convened a meeting of Latin American experts on BRAF-mutated melanoma to develop guidelines and recommendations for diagnosis through treatment. RESULTS AND CONCLUSIONS Some recommendations for improving diagnostics through improving access and reducing the cost of BRAF-mutation testing, enhancing efficiency in pathology laboratories, and creating country-specific local guidelines. The panel also gave treatment recommendations for neo-adjuvant therapy, adjuvant therapy, and therapy for patients with metastatic disease in Latin America.
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Affiliation(s)
- María A. Bravo-Garzón
- Luis Carlos Sarmiento Angulo Cancer Treatment and Research Center – CTIC, Bogotá D.C., Colombia
| | | | | | | | | | | | | | - Matías Chacón
- Alexander Fleming Institute, Buenos Aires, Argentina
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Salman P, de Melo AC, Rico-Restrepo M, Rodriguez J, Russi A, Schmerling RA, Zambrano A, Cinat G. Addressing the unmet needs of patients with BRAF-mutated melanoma in Latin America: Expert perspective. Front Oncol 2023; 13:1032300. [PMID: 36998456 PMCID: PMC10043339 DOI: 10.3389/fonc.2023.1032300] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 02/27/2023] [Indexed: 03/16/2023] Open
Abstract
Melanoma represents an increasing public health burden with extensive unmet needs in Latin America (LA). A mutation in the BRAF gene is present in approximately 50% of all melanomas in White populations and is a target of precision medicine, with the potential to dramatically improve patient outcomes. Thus, increased access to BRAF testing and therapy is LA must be explored. At a multi-day conference, a panel of Latin American experts in oncology and dermatology were provided with questions to address the barriers limiting access to testing for BRAF mutation in patients with melanoma in LA, who may be eligible for targeted therapy to improve their prognosis. During the conference, responses were discussed and edited until a consensus on addressing the barriers was achieved. Identified challenges included ignorance of BRAF-status implications, limited human and infrastructural resources, affordability and reimbursement, fragmented care delivery, pitfalls in the sample journey, and lack of local data. Despite the clear benefits of targeted therapies for BRAF-mutated melanoma in other regions, there is no clear path to prepare LA for a sustainable personalized medicine approach to this disease. Due to melanoma’s time-sensitive nature, LA must aim to provide early access to BRAF testing and consider mutational status within treatment decision making. To this end, recommendations are provided and include establishing multidisciplinary teams and melanoma referral centers and improving access to diagnosis and treatment.
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Affiliation(s)
- Pamela Salman
- Oncology Department, Oncovida Cancer Center, Santiago, Chile
- *Correspondence: Pamela Salman,
| | | | | | | | - Andrea Russi
- Departamento de Oncología, Hospital Universitario San Ignacio, Centro Javeriano de Oncología, Bogotá, Colombia
| | | | - Angela Zambrano
- Departamento de Oncología, Fundación Valle del Lili, Cali, Colombia
| | - Gabriela Cinat
- Instituto de Oncología Ángel Roffo, Universidad de Buenos Aires, Fundación CIDEA, Buenos Aires, Argentina
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Manca A, Paliogiannis P, Colombino M, Casula M, Lissia A, Botti G, Caracò C, Ascierto PA, Sini MC, Palomba G, Pisano M, Doneddu V, Cossu A, Palmieri G. Mutational concordance between primary and metastatic melanoma: a next-generation sequencing approach. J Transl Med 2019; 17:289. [PMID: 31455347 PMCID: PMC6712827 DOI: 10.1186/s12967-019-2039-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Accepted: 08/18/2019] [Indexed: 12/21/2022] Open
Abstract
Background Cutaneous malignant melanoma (CMM) is one of the most common skin cancers worldwide. Limited information is available in the current scientific literature on the concordance of genetic alterations between primary and metastatic CMM. In the present study, we performed next-generation sequencing (NGS) analysis of the main genes participating in melanoma pathogenesis and progression, among paired primary and metastatic lesions of CMM patients, with the aim to evaluate levels of discrepancies in mutational patterns. Methods Paraffin-embedded tumor tissues of the paired lesions were retrieved from the archives of the institutions participating in the study. NGS was performed using a specific multiple-gene panel constructed by the Italian Melanoma Intergroup (IMI) to explore the mutational status of selected regions (343 amplicons; amplicon range: 125–175 bp; coverage 100%) within the main 25 genes involved in CMM pathogenesis; sequencing was performed with the Ion Torrent PGM System. Results A discovery cohort encompassing 30 cases, and a validation cohort including eleven Sardinian patients with tissue availability from both the primary and metachronous metastatic lesions were identified; the global number of analyzed tissue specimens was 90. A total of 829 genetic non-synonymous variants were detected: 101 (12.2%) were pathogenic/likely pathogenic, 131 (15.8%) were benign/likely benign, and the remaining 597 (72%) were uncertain/unknown significance variants. Considering the global cohort, the consistency in pathogenic/pathogenic like mutations was 76%. Consistency for BRAF and NRAS mutations was 95.2% and 85.7% respectively, without statistically significant differences between the discovery and validation cohort. Conclusions Our study showed a high level of concordance in mutational patterns between primary and metastatic CMM, especially when pathogenic mutations in driver genes were considered.
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Affiliation(s)
- Antonella Manca
- Unit of Cancer Genetics, Institute of Biomolecular Chemistry, National Research Council, Traversa La Crucca 3, 07100, Sassari, Italy
| | - Panagiotis Paliogiannis
- Department of Medical, Surgical, and Experimental Sciences, University of Sassari, Viale San Pietro 43, 07100, Sassari, Italy
| | - Maria Colombino
- Unit of Cancer Genetics, Institute of Biomolecular Chemistry, National Research Council, Traversa La Crucca 3, 07100, Sassari, Italy
| | - Milena Casula
- Unit of Cancer Genetics, Institute of Biomolecular Chemistry, National Research Council, Traversa La Crucca 3, 07100, Sassari, Italy
| | - Amelia Lissia
- Department of Medical, Surgical, and Experimental Sciences, University of Sassari, Viale San Pietro 43, 07100, Sassari, Italy
| | - Gerardo Botti
- Istituto Nazionale Tumori "Fondazione Pascale", Via Mariano Semmola, 53, 80131, Naples, Italy
| | - Corrado Caracò
- Istituto Nazionale Tumori "Fondazione Pascale", Via Mariano Semmola, 53, 80131, Naples, Italy
| | - Paolo A Ascierto
- Istituto Nazionale Tumori "Fondazione Pascale", Via Mariano Semmola, 53, 80131, Naples, Italy
| | - Maria Cristina Sini
- Unit of Cancer Genetics, Institute of Biomolecular Chemistry, National Research Council, Traversa La Crucca 3, 07100, Sassari, Italy
| | - Grazia Palomba
- Unit of Cancer Genetics, Institute of Biomolecular Chemistry, National Research Council, Traversa La Crucca 3, 07100, Sassari, Italy
| | - Marina Pisano
- Unit of Cancer Genetics, Institute of Biomolecular Chemistry, National Research Council, Traversa La Crucca 3, 07100, Sassari, Italy
| | | | | | - Valentina Doneddu
- Department of Medical, Surgical, and Experimental Sciences, University of Sassari, Viale San Pietro 43, 07100, Sassari, Italy
| | - Antonio Cossu
- Department of Medical, Surgical, and Experimental Sciences, University of Sassari, Viale San Pietro 43, 07100, Sassari, Italy
| | - Giuseppe Palmieri
- Unit of Cancer Genetics, Institute of Biomolecular Chemistry, National Research Council, Traversa La Crucca 3, 07100, Sassari, Italy.
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Valdeira ASC, Ritt DA, Morrison DK, McMahon JB, Gustafson KR, Salvador JAR. Synthesis and Biological Evaluation of New Madecassic Acid Derivatives Targeting ERK Cascade Signaling. Front Chem 2018; 6:434. [PMID: 30324102 PMCID: PMC6172662 DOI: 10.3389/fchem.2018.00434] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 09/03/2018] [Indexed: 01/29/2023] Open
Abstract
In the present study, a series of novel madecassic acid derivatives was synthesized and screened against the National Cancer Institute's 60 human cancer cell line panel. Among them, compounds 5, 12, and 17 displayed potent and highly differential antiproliferative activity against 80% of the tumor cells harboring the B-RafV600E mutation within the nanomolar range. Structure-activity analysis revealed that a 5-membered A ring containing an α,β-unsaturated aldehyde substituted at C-23 with a 2-furoyl group seems to be crucial to produce this particular growth inhibition signature. In silico analysis of the cytotoxicity pattern of these compounds identified two highly correlated clinically approved drugs with known B-RafV600E inhibitory activity. Follow-up analysis revealed inhibition of the ERK signaling pathway through the reduction of cellular Raf protein levels is a key mechanism of action of these compounds. In particular, 17 was the most potent compound in suppressing tumor growth of B-RafV600E-mutant cell lines and displayed the highest reduction of Raf protein levels among the tested compounds. Taken together, this study revealed that modifications of madecassic acid structure can provide molecules with potent anticancer activity against cell lines harboring the clinically relevant B-RafV600E mutation, with compound 17 identified as a promising lead for the development of new anticancer drugs.
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Affiliation(s)
- Ana S C Valdeira
- Laboratory of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal.,Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - Daniel A Ritt
- Laboratory of Cell and Developmental Signaling, Center for Cancer Research, National Cancer Institute, Frederick, MD, United States
| | - Deborah K Morrison
- Laboratory of Cell and Developmental Signaling, Center for Cancer Research, National Cancer Institute, Frederick, MD, United States
| | - James B McMahon
- Molecular Targets Program, Center for Cancer Research, National Cancer Institute, Frederick, MD, United States
| | - Kirk R Gustafson
- Molecular Targets Program, Center for Cancer Research, National Cancer Institute, Frederick, MD, United States
| | - Jorge A R Salvador
- Laboratory of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal.,Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
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