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Broman KK , Hughes T , Dossett L , Sun J , Kirichenko D , Carr MJ , Sharma A , Bartlett EK , Nijhuis AAG , Thompson JF , Hieken TJ , Kottschade L , Downs J , Gyorki DE , Stahlie E , van Akkooi A , Ollila DW , Frank J , Song Y , Karakousis G , Moncrieff M , Nobes J , Vetto J , Han D , Farma JM , Deneve JL , Fleming MD , Perez MC , Lowe MC , Olofsson Bagge R , Mattsson J , Lee AY , Berman RS , Chai H , Kroon HM , Teras J , Teras RM , Farrow NE , Beasley G , Hui JYC , Been L , Kruijff S , Kim Y , Naqvi SMH , Sarnaik AA , Sondak VK , Zager JS
Active surveillance of patients who have sentinel node positive melanoma: An international, multi-institution evaluation of adoption and early outcomes after the Multicenter Selective Lymphadenectomy trial II (MSLT-2)
Cancer. 2021 Jul 1;127(13) :2251-2261
PMID: 33826754 URL: https://www.ncbi.nlm.nih.gov/pubmed/33826754
AbstractBACKGROUND: For patients with sentinel lymph node (SLN)-positive cutaneous melanoma, the Second Multicenter Selective Lymphadenectomy trial demonstrated equivalent disease-specific survival (DSS) with active surveillance using nodal ultrasound versus completion lymph node dissection (CLND). Adoption and outcomes of active surveillance in clinical practice and in adjuvant therapy recipients are unknown. METHODS: In a retrospective cohort of SLN-positive adults treated at 21 institutions in Australia, Europe, and the United States from June 2017 to November 2019, the authors evaluated the impact of active surveillance and adjuvant therapy on all-site recurrence-free survival (RFS), isolated nodal RFS, distant metastasis-free survival (DMFS), and DSS using Kaplan-Meier curves and Cox proportional hazard models. RESULTS: Among 6347 SLN biopsies, 1154 (18%) were positive and had initial negative distant staging. In total, 965 patients (84%) received active surveillance, 189 (16%) underwent CLND. Four hundred thirty-nine patients received adjuvant therapy (surveillance, 38%; CLND, 39%), with the majority (83%) receiving anti-PD-1 immunotherapy. After a median follow-up of 11 months, 220 patients developed recurrent disease (surveillance, 19%; CLND, 22%), and 24 died of melanoma (surveillance, 2%; CLND, 4%). Sixty-eight patients had an isolated nodal recurrence (surveillance, 6%; CLND, 4%). In patients who received adjuvant treatment without undergoing prior CLND, all isolated nodal recurrences were resectable. On risk-adjusted multivariable analyses, CLND was associated with improved isolated nodal RFS (hazard ratio [HR], 0.36; 95% CI, 0.15-0.88), but not all-site RFS (HR, 0.68; 95% CI, 0.45-1.02). Adjuvant therapy improved all-site RFS (HR, 0.52; 95% CI, 0.47-0.57). DSS and DMFS did not differ by nodal management or adjuvant treatment. CONCLUSIONS: Active surveillance has been adopted for most SLN-positive patients. At initial assessment, real-world outcomes align with randomized trial findings, including in adjuvant therapy recipients. LAY SUMMARY: For patients with melanoma of the skin and microscopic spread to lymph nodes, monitoring with ultrasound is an alternative to surgically removing the remaining lymph nodes. The authors studied adoption and real-world outcomes of ultrasound monitoring in over 1000 patients treated at 21 centers worldwide, finding that most patients now have ultrasounds instead of surgery. Although slightly more patients have cancer return in the lymph nodes with this strategy, typically, it can be removed with delayed surgery. Compared with up-front surgery, ultrasound monitoring results in the same overall risk of melanoma coming back at any location or of dying from melanoma.
Notes1097-0142 Broman, Kristy Kummerow Orcid: 0000-0002-4679-4665 Hughes, Tasha Dossett, Lesly Sun, James Kirichenko, Dennis Orcid: 0000-0003-0550-9335 Carr, Michael J Sharma, Avinash Bartlett, Edmund K Orcid: 0000-0002-0923-153x Nijhuis, Amanda A G Thompson, John F Hieken, Tina J Orcid: 0000-0002-4277-8692 Kottschade, Lisa Downs, Jennifer Gyorki, David E Stahlie, Emma van Akkooi, Alexander Ollila, David W Frank, Jill Song, Yun Orcid: 0000-0002-1822-303x Karakousis, Giorgos Orcid: 0000-0002-9321-2795 Moncrieff, Marc Nobes, Jenny Vetto, John Han, Dale Farma, Jeffrey M Deneve, Jeremiah L Fleming, Martin D Perez, Matthew C Lowe, Michael C Orcid: 0000-0003-4853-7352 Olofsson Bagge, Roger Mattsson, Jan Lee, Ann Y Berman, Russell S Chai, Harvey Kroon, Hidde M Teras, Juri Teras, Roland M Farrow, Norma E Beasley, Georgia Hui, Jane Yuet Ching Orcid: 0000-0002-2628-0720 Been, Lukas Kruijff, Schelto Kim, Youngchul Naqvi, Syeda Mahrukh Hussnain Sarnaik, Amod A Sondak, Vernon K Zager, Jonathan S H. Lee Moffitt Cancer Center and Research Institute/ P30-CA076292/National Cancer Institute-designated comprehensive cancer center/ Journal Article United States Cancer. 2021 Apr 7. doi: 10.1002/cncr.33483.