Recent studies have highlighted advancements in melanoma treatment, particularly focusing on immunotherapy and its efficacy. A study assessed the accuracy of calculating the percentage of residual viable tumor (%RVT) after neoadjuvant immunotherapy in stage III melanoma, suggesting that reduced tumor bed examination does not compromise prognostic information (ref: Rawson doi.org/10.1016/j.annonc.2025.10.1237/). Another trial evaluated the combination of nivolumab and ipilimumab in advanced mismatch repair-deficient noncolorectal cancers, reporting a remarkable overall response rate of 63%, indicating the potential for durable responses in this patient population (ref: Carlino doi.org/10.1001/jamaoncol.2025.4721/). However, the use of adjuvant immunotherapy in acral melanoma showed no significant benefit in distant metastasis-free survival, raising questions about its effectiveness in specific melanoma subtypes (ref: Sanogo doi.org/10.1111/jdv.70136/). Furthermore, the role of TET2 in enhancing immune checkpoint blockade responses was explored, revealing that TET2 inactivation in hematopoietic cells could improve immunotherapy outcomes (ref: Rondeau doi.org/10.1158/0008-5472.CAN-24-3329/). These findings underscore the complexity of melanoma treatment, where patient-specific factors and tumor characteristics significantly influence therapeutic efficacy.