Acral melanoma is a rare subtype of melanoma with unique histologic and biologic characteristics. Given its relative rarity compared with nonacral cutaneous melanoma, acral melanoma has been understudied and underrepresented in modern-day prospective clinical trials that have shaped the contemporary management of advanced cutaneous melanoma. Therefore, treatment principles for advanced acral melanoma are mostly derived from retrospective analyses or extrapolated from data largely based on nonacral cutaneous melanoma. Further studies are warranted to evaluate the efficacy of systemic immune and targeted molecular therapies, and to identify molecular targets for patients with advanced acral melanoma.
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