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Melanoma: HELP
Articles by Katherine A. Zukotynski
Based on 2 articles published since 2009
(Why 2 articles?)
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Between 2009 and 2019, Katherine Zukotynski wrote the following 2 articles about Melanoma.
 
+ Citations + Abstracts
1 Clinical Trial Metabolic response by FDG-PET to imatinib correlates with exon 11 KIT mutation and predicts outcome in patients with mucosal melanoma. 2014

Zukotynski, Katherine / Yap, Jeffrey T / Giobbie-Hurder, Anita / Weber, Jeffrey / Gonzalez, Rene / Gajewski, Thomas F / O'Day, Steven / Kim, Kevin / Hodi, F Stephen / Van den Abbeele, Annick D. · ·Cancer Imaging · Pubmed #25609545.

ABSTRACT: BACKGROUND: In patients with metastatic melanoma and KIT amplifications and/or mutations, therapy with imatinib mesylate may prolong survival. 18F-labeled 2-fluoro-2-deoxy-D-glucose (18F-FDG) PET/CT may be used to assess metabolic response. We investigated associations of metabolic response, mutational status, progression-free survival and overall survival in this population. METHODS: Baseline and 4-week follow-up 18F-FDG-PET/CT were evaluated in 17 patients with metastatic melanoma and KIT amplifications and/or mutations treated with imatinib in a multicenter phase II clinical trial. The maximum standardized uptake values (SUVmax) were measured in up to 10 lesions on each scan. Metabolic response was classified using modified EORTC criteria. Each patient had a diagnostic CT or MR at baseline, after 6 weeks of therapy and then at intervals of 2 months and anatomic response was classified using RECIST 1.0. Median follow-up was 9.8 months. RESULTS: Partial metabolic response (PMR), stable metabolic disease (SMD) and progressive metabolic disease (PMD) was seen in 5 (29%), 5 (29%), and 7 (41%) patients respectively. Five patients (29%) had a KIT mutation in exon 11, four of whom (80%) had PMR while 1 (20%) had SMD. Twelve patients (71%) did not have a KIT mutation in exon 11, and only 1 (8%) had PMR, 4 (33%) had SMD and 7 (58%) had PMD. There was agreement of metabolic and anatomic classification in 12 of 17 patients (71%). Four of 17 patients (24%) had PR on both metabolic and anatomic imaging and all had a KIT mutation in exon 11. Survival of patients with PMD was lower than with SMD or PMR. CONCLUSIONS: Metabolic response by 18F-FDG-PET/CT is associated with mutational status in metastatic melanoma patients treated with imatinib. 18F-FDG-PET/CT may be a predictor of outcome, although a larger study is needed to verify this. CLINICAL TRIAL REGISTRATION: NCT00424515.

2 Clinical Trial Imatinib for melanomas harboring mutationally activated or amplified KIT arising on mucosal, acral, and chronically sun-damaged skin. 2013

Hodi, F Stephen / Corless, Christopher L / Giobbie-Hurder, Anita / Fletcher, Jonathan A / Zhu, Meijun / Marino-Enriquez, Adrian / Friedlander, Philip / Gonzalez, Rene / Weber, Jeffrey S / Gajewski, Thomas F / O'Day, Steven J / Kim, Kevin B / Lawrence, Donald / Flaherty, Keith T / Luke, Jason J / Collichio, Frances A / Ernstoff, Marc S / Heinrich, Michael C / Beadling, Carol / Zukotynski, Katherine A / Yap, Jeffrey T / Van den Abbeele, Annick D / Demetri, George D / Fisher, David E. ·F. Stephen Hodi, Anita Giobbie-Hurder, Philip Friedlander, Jason J. Luke, Katherine A. Zukotynski, Jeffrey T. Yap, Annick D. Van den Abbeele, and George D. Demetri, Dana-Farber Cancer Institute · Jonathan A. Fletcher, Meijun Zhu, and Adrian Marino-Enriquez, Brigham and Women's Hospital · Donald Lawrence, Keith T. Flaherty, and David E. Fisher, Massachusetts General Hospital, Boston, MA · Christopher L. Corless, Michael C. Heinrich, and Carol Beadling, Portland Veterans Administration Medical Center and Oregon Health & Science University, Portland, OR · Philip Friedlander, Mount Sinai Medical Center, New York, NY · Rene Gonzalez, University of Colorado Cancer Center, Aurora, CO · Jeffrey S. Weber, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL · Thomas F. Gajewski, University of Chicago, Chicago, IL · Steven J. O'Day, Beverly Hills Cancer Center, Beverly Hills, CA · Kevin B. Kim, The University of Texas MD Anderson Cancer Center, Houston, TX · Frances A. Collichio, The University of North Carolina at Chapel Hill, Chapel Hill, NC · and Marc S. Ernstoff, Geisel School of Medicine and Norris Cotton Cancer Center, Hanover, NH. ·J Clin Oncol · Pubmed #23775962.

ABSTRACT: PURPOSE: Amplifications and mutations in the KIT proto-oncogene in subsets of melanomas provide therapeutic opportunities. PATIENTS AND METHODS: We conducted a multicenter phase II trial of imatinib in metastatic mucosal, acral, or chronically sun-damaged (CSD) melanoma with KIT amplifications and/or mutations. Patients received imatinib 400 mg once per day or 400 mg twice per day if there was no initial response. Dose reductions were permitted for treatment-related toxicities. Additional oncogene mutation screening was performed by mass spectroscopy. RESULTS: Twenty-five patients were enrolled (24 evaluable). Eight patients (33%) had tumors with KIT mutations, 11 (46%) with KIT amplifications, and five (21%) with both. Median follow-up was 10.6 months (range, 3.7 to 27.1 months). Best overall response rate (BORR) was 29% (21% excluding nonconfirmed responses) with a two-stage 95% CI of 13% to 51%. BORR was significantly greater than the hypothesized null of 5% and statistically significantly different by mutation status (7 of 13 or 54% KIT mutated v 0% KIT amplified only). There were no statistical differences in rates of progression or survival by mutation status or by melanoma site. The overall disease control rate was 50% but varied significantly by KIT mutation status (77% mutated v 18% amplified). Four patients harbored pretreatment NRAS mutations, and one patient acquired increased KIT amplification after treatment. CONCLUSION: Melanomas that arise on mucosal, acral, or CSD skin should be assessed for KIT mutations. Imatinib can be effective when tumors harbor KIT mutations, but not if KIT is amplified only. NRAS mutations and KIT copy number gain may be mechanisms of therapeutic resistance to imatinib.