A Prospective Study of Intraarterial Infusion Chemotherapy in Advanced Wild-Type BRAF Melanoma Patients

Stefano Guadagni1, Odysseas Zoras2, Giammaria Fiorentini3

  • 1Department of Applied Clinical Sciences and Biotechnology, University of L'Aquila, L'Aquila, Italy.

Abstract

Insights

Locoregional melphalan chemotherapy offers a safe and effective treatment for advanced cutaneous melanoma (CM) patients with unresectable limb and pelvic metastases, especially when immunotherapy is not an option. This approach showed a 37.1% objective response rate in a prospective study.

Area of Science:

  • Oncology
  • Medical treatment
  • Clinical research

Background:

  • Advanced cutaneous melanoma (CM) presents treatment challenges, particularly for unresectable stage IIIC/D disease in the limbs and pelvis.
  • Patients resistant or ineligible for novel targeted and immunotherapies require alternative treatment strategies.

Purpose of the Study:

  • To evaluate the safety and efficacy of multidisciplinary treatments, including locoregional melphalan chemotherapy, for advanced CM with unresectable metastases in the inferior limbs and pelvis.
  • To assess tumor response in BRAF wild-type CM patients progressing after or ineligible for immunotherapy.

Main Methods:

  • A prospective study involving 62 BRAF wild-type CM patients with locoregional metastases in the inferior limbs and pelvis.
  • Treatments included hyperthermic isolated limb perfusion, isolated limb infusion, or hypoxic pelvic and limb perfusion with melphalan chemotherapy.
  • Multidisciplinary therapy incorporated local, locoregional, and systemic treatments.

Main Results:

  • An objective response rate of 37.1% was observed at 3 months post-locoregional chemotherapy.
  • Median progression-free survival was 4 months.
  • Procedure-related complications were 12.9%, with 30.6% low-grade hematological toxicity and 11.3% severe limb tissue reactions.

Conclusions:

  • Locoregional melphalan chemotherapy demonstrated a safe and effective profile in this subgroup of advanced CM patients.
  • Younger patients (≤ 75 years) and those with exclusively limb-localized metastases showed significantly higher odds of response.

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