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dc.contributor.authorDiamond, EL
dc.contributor.authorSubbiah, V
dc.contributor.authorLockhart, AC
dc.contributor.authorBlay, J-Y
dc.contributor.authorPuzanov, I
dc.contributor.authorChau, I
dc.contributor.authorRaje, NS
dc.contributor.authorWolf, J
dc.contributor.authorErinjeri, JP
dc.contributor.authorTorrisi, J
dc.contributor.authorLacouture, M
dc.contributor.authorElez, E
dc.contributor.authorMartínez-Valle, F
dc.contributor.authorDurham, B
dc.contributor.authorArcila, ME
dc.contributor.authorUlaner, G
dc.contributor.authorAbdel-Wahab, O
dc.contributor.authorPitcher, B
dc.contributor.authorMakrutzki, M
dc.contributor.authorRiehl, T
dc.contributor.authorBaselga, J
dc.contributor.authorHyman, DM
dc.date.accessioned2018-02-14T10:18:58Z
dc.date.issued2018-03
dc.identifier.citationJAMA oncology, 2018, 4 (3), pp. 384 - 388
dc.identifier.issn2374-2437
dc.identifier.urihttps://repository.icr.ac.uk/handle/internal/1065
dc.identifier.eissn2374-2445
dc.identifier.doi10.1001/jamaoncol.2017.5029
dc.description.abstractImportance:The histiocytic neoplasms Erdheim-Chester disease (ECD) and Langerhans cell histiocytosis (LCH) are highly enriched for BRAF V600 mutations and have been previously shown to be responsive to treatment with vemurafenib, an inhibitor of the BRAF V600 kinase. However, the long-term efficacy and safety of prolonged vemurafenib use in these patients are not defined. Here we analyze the final efficacy and safety data for vemurafenib in patients with ECD and LCH enrolled in the VE-BASKET study. Objective:To determine the efficacy and safety of vemurafenib in adults with ECD or LCH enrolled in the VE-BASKET study. Design, Setting, and Participants:The VE-BASKET study was an open-label, nonrandomized, multicohort study for patients with nonmelanoma cancers harboring the BRAF V600 mutation. Patients with BRAF V600-mutant ECD or LCH were enrolled in an "other solid tumor" cohort of the VE-BASKET study, and they were enrolled in the present study. Interventions:Patients received vemurafenib, 960 mg, twice daily continuously until disease progression, study withdrawal, or occurrence of intolerable adverse effects. Main Outcomes and Measures:The primary end point was confirmed objective response rate (ORR) by Response Evaluation Criteria in Solid Tumors (RECIST, version 1.1). Secondary end points included progression-free survival (PFS), overall survival (OS), metabolic response by modified positron-emission tomography (PET) Response Criteria in Solid Tumors (PERCIST) using 18F-fluorodeoxyglucose (FDG)-PET/computed tomography (CT), and safety. Results:A total of 26 patients from the VE-BASKET trial (22 with ECD, 4 with LCH) were included in the present study (14 women and 12 men; median age, 61 years; age range, 51-74 years). The confirmed ORR was 61.5% (95% CI, 40.6%-79.8%) in the overall cohort and 54.5% (95% CI, 32.2%-75.6%) in patients with ECD. All evaluable patients achieved stable disease or better. The median PFS and OS had not been reached in the overall cohort at study closure despite a median follow-up of 28.8 months; 2-year PFS was 86% (95% CI, 72%-100%), and 2-year OS was 96% (95% CI, 87%-100%). All 15 patients evaluated by FDG-PET/CT achieved a metabolic response, including 12 patients (80%) with a complete metabolic response. The most common adverse events (AEs) in the overall cohort included arthralgia, maculopapular rash, fatigue, alopecia, prolonged QT interval, skin papilloma, and hyperkeratosis. Hypertension and dermatologic AEs occurred at higher rates than those reported in metastatic melanoma. Conclusions and Relevance:In this study, vemurafenib had prolonged efficacy in patients with BRAF V600-mutant ECD and LCH and warrants consideration as a new standard of care for these patients.
dc.formatPrint
dc.format.extent384 - 388
dc.languageeng
dc.language.isoeng
dc.subjectHumans
dc.subjectHistiocytosis, Langerhans-Cell
dc.subjectErdheim-Chester Disease
dc.subjectProto-Oncogene Proteins B-raf
dc.subjectFluorodeoxyglucose F18
dc.subjectValine
dc.subjectPrognosis
dc.subjectTreatment Outcome
dc.subjectSurvival Analysis
dc.subjectAmino Acid Substitution
dc.subjectMutation, Missense
dc.subjectAged
dc.subjectMiddle Aged
dc.subjectFemale
dc.subjectMale
dc.subjectPositron Emission Tomography Computed Tomography
dc.subjectVemurafenib
dc.titleVemurafenib for BRAF V600-Mutant Erdheim-Chester Disease and Langerhans Cell Histiocytosis: Analysis of Data From the Histology-Independent, Phase 2, Open-label VE-BASKET Study.
dc.typeJournal Article
rioxxterms.versionofrecord10.1001/jamaoncol.2017.5029
rioxxterms.licenseref.startdate2018-03
rioxxterms.typeJournal Article/Review
dc.relation.isPartOfJAMA oncology
pubs.issue3
pubs.notesNot known
pubs.organisational-group/ICR
pubs.organisational-group/ICR/Primary Group
pubs.organisational-group/ICR/Primary Group/Royal Marsden Clinical Units
pubs.organisational-group/ICR
pubs.organisational-group/ICR/Primary Group
pubs.organisational-group/ICR/Primary Group/Royal Marsden Clinical Units
pubs.publication-statusPublished
pubs.volume4
pubs.embargo.termsNot known
dc.contributor.icrauthorChau, Ianen
dc.contributor.icrauthorMarsden,en


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