A comparison of isolated limb infusion/perfusion, immune checkpoint inhibitors, and intralesional therapy as first-line treatment for patients with melanoma in-transit metastases

Danielle K. DePalo, Michelle M. Dugan, Syeda Mahrukh Hussnain Naqvi, David W. Ollila, Tina J. Hieken, Matthew S. Block, Winan J. van Houdt, Michel W.J.M. Wouters, Sophie J.M. Reijers, Nethanel Asher, Kristy K. Broman, Zoey Duncan, Matilda Anderson, David E. Gyorki, Hayden Snow, Jenny Held, Jeffrey M. Farma, John T. Vetto, Jane Y.C. Hui, Madison KolbowRobyn P.M. Saw, Serigne N. Lo, Georgina V. Long, John F. Thompson, Youngchul Kim, Lilit Karapetyan, Lars Ny, Alexander C.J. van Akkooi, Roger Olofsson Bagge, Jonathan S. Zager

Research output: Contribution to journalArticlepeer-review

Abstract

BACKGROUND: Isolated limb infusion and perfusion (ILI/ILP) has been a mainstay treatment for unresectable melanoma in-transit metastases (ITM), but increased use of immune checkpoint inhibitors (ICI) and intralesional therapy (talimogene laherparepvec [TVEC]) introduced several different management options. This study compares first-line ILI/ILP, ICI, and TVEC.

METHODS: Retrospective review from 12 international institutions included patients treated from 1990 to 2022 with first-line ILI/ILP, ICI, or TVEC for unresectable melanoma ITM.

RESULTS: A total of 551 patients were treated, with ILI/ILP (n = 356), ICI (n = 125), and TVEC (n = 70) with median follow-up of 5.5 years. Tumor burden was highest with ILI/ILP and lowest with TVEC (p = .002). Breslow thickness was lowest with TVEC (p = .007). TVEC was mostly used in stage IIIB disease versus IIIC for ILI/ILP and ICI (p = .01). Using ICI as the reference category, TVEC had the highest odds of a complete response (CR) (odds ratio, 1.96; p = .029) and a longer local progression-free survival (PFS) (hazard ratio [HR], 0.40; p = .003). ILI/ILP had shorter local PFS (HR, 1.72; p = .012), PFS (HR, 1.79; p < .001), distant metastasis-free survival (DMFS) (HR, 1.75; p = .014), overall survival (HR, 1.82; p = .009), and melanoma-specific survival (HR, 2.29; p = .004). Stage IIIB disease had longer DMFS (HR, 0.24; p < .001) compared to IIIC/D.

CONCLUSIONS: TVEC as first-line therapy for unresectable melanoma ITM was associated with superior CR rates and local PFS. Notably, TVEC was used in patients with a lower Breslow thickness, disease stage, and tumor burden. Therefore, when compared to ILI/ILP and ICI, TVEC should be considered as first-line therapy for unresectable stage IIIB melanoma ITM with minimal tumor burden and lower Breslow thickness.

Original languageEnglish
Article numbere35636
Pages (from-to)e35636
JournalCancer
Volume131
Issue number1
Early online dateOct 10 2024
DOIs
StatePublished - Jan 1 2025

Keywords

  • immune checkpoint inhibitors
  • in-transit metastasis
  • intralesional therapy
  • isolated limb infusion
  • isolated limb perfusion
  • metastatic melanoma
  • regional chemotherapy
  • talimogene laherparepvec
  • Humans
  • Middle Aged
  • Chemotherapy, Cancer, Regional Perfusion/methods
  • Male
  • Extremities/pathology
  • Herpesvirus 1, Human
  • Neoplasm Metastasis
  • Melanoma/drug therapy
  • Aged, 80 and over
  • Biological Products
  • Female
  • Adult
  • Aged
  • Retrospective Studies
  • Immune Checkpoint Inhibitors/administration & dosage
  • Skin Neoplasms/drug therapy

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