Nail Apparatus Melanoma: Current Management and Future Perspectives

Area of Science:

• Dermatology
• Oncology
• Cancer Research

Background:

• Nail apparatus melanoma (NAM) is a rare subtype of acral melanoma.
• Current management guidelines for NAM are largely based on general cutaneous melanoma treatment, with limited specific evidence.
• Emerging data suggest NAM may possess a distinct genetic profile compared to both non-acral cutaneous melanoma and other acral melanomas.

Purpose of the Study:

• To review recent advancements in the clinical management of Nail apparatus melanoma.
• To highlight the current evidence gaps and areas requiring further investigation in NAM treatment.
• To discuss the genetic distinctions and therapeutic implications for NAM.

Main Methods:

• Literature review focusing on recent studies and clinical data related to Nail apparatus melanoma management.
• Analysis of surgical approaches, staging procedures, and systemic therapies for NAM.
• Synthesis of current understanding regarding the genetic background and treatment efficacy in NAM.

Main Results:

• Surgical excision is the primary treatment for localized NAM, with options including digit amputation and digit-preserving surgery.
• Sentinel lymph node biopsy is considered for staging invasive NAM, but the benefit of completion lymph node dissection in cases of metastasis is unclear.
• Systemic therapies like immune checkpoint inhibitors and BRAF/MEK inhibitors are used for metastatic NAM, though their efficacy in NAM may be lower than in cutaneous melanoma, and data remain limited.

Conclusions:

• Optimal management strategies for Nail apparatus melanoma require further definition due to scarce evidence.
• There is an urgent need for more data collection to establish best practices for NAM treatment, particularly regarding systemic therapies and lymph node management.
• Understanding the unique genetic characteristics of NAM may inform future therapeutic approaches.