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Ref Type | Journal Article | ||||||||||||
PMID | (38716076) | ||||||||||||
Authors | Falkman L, Sundin A, Skogseid B, Botling J, Bernardo Y, Wallin G, Zhang L, Welin S, Lase I, Mollazadegan K, Crona J | ||||||||||||
Title | Genetics-guided therapy in neuroendocrine carcinoma: response to BRAF- and MEK-inhibitors. | ||||||||||||
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Abstract Text | Metastatic neuroendocrine carcinoma (NEC) is associated with short survival. Other than platinum-based chemotherapy, there is no clear standard regimen. Current guidelines suggest that combination treatment with BRAF-inhibitors should be considered for patients with BRAF V600E-mutated NEC. However, since only eight such patients have been reported in the literature, our object was to confirm the validity of this recommendation.This was a single-center retrospective cohort study conducted at Uppsala University Hospital. The included patients 1) had a histopathologically confirmed diagnosis of NEC, 2) were diagnosed between January 1st, 2018 and December 31st, 2023, 3) had tumor tissue genetically screened by a broad next-generation sequencing (NGS) panel, and 4) showed a tumor mutation for which there is a currently available targeted therapy.We screened 48 patients diagnosed with NEC between January 1st, 2018 and December 31st, 2023. Twelve had been analyzed with a broad NGS-panel, and two had a targetable mutation. Both these patients harbored a BRAF V600E-mutated colon-NEC and were treated with BRAF- and MEK-inhibitors dabrafenib and trametinib in second-line. At first radiological evaluation (RECIST 1.1), both patients had a reduction of tumor size, which decreased by 31 and 40%. Both had short response periods, and their overall survival was 12 and 9 months.BRAF-mutated NEC is sensitive to treatment with BRAF- and MEK-inhibitor combination. These results further support that DNA sequencing should be considered as standard of care in NECs to screen for potential treatment targets. |
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Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
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BRAF V600E | colon neuroendocrine neoplasm | predicted - sensitive | Dabrafenib + Trametinib | Case Reports/Case Series | Actionable | In a clinical study, second-line treatment with the combination of Mekinist (trametinib) and Tafinlar (dabrafenib) resulted in a partial response in two patients with a neuroendocrine carcinoma of the colon harboring BRAF V600E, with progression-free survival of 6 months in one patient and 4 months in the second patient (PMID: 38716076). | 38716076 |