Key Takeaways
- In a multicenter cohort of 1,101 patients with resected stage III melanoma, the 3-year recurrence-free survival (RFS) rate was 58% overall, dropping to 44% for those with nodal involvement greater than 3 nodes
- For stage IIB melanoma patients (n=468), the 5-year melanoma-specific survival (MSS) post-recurrence was 52%, with locoregional recurrence occurring in 28%
- Among 2,350 stage IIIA melanoma cases, the cumulative incidence of distant metastasis recurrence at 5 years was 21%
- Sentinel lymph node biopsy-positive rate in stage II was 16%, increasing recurrence risk 3-fold
- Ulceration present in primary tumor raised recurrence hazard ratio (HR) to 1.9 (95% CI 1.6-2.3)
- Age >65 years associated with 1.4-fold increased recurrence risk (p=0.002), n=4,500
- In 1,250 recurrent melanoma patients, median post-recurrence survival (PRS) was 9.2 months
- Locoregional recurrence only (n=450) had 5-year PRS of 38%
- Distant metastatic recurrence (n=2,100) median PRS 6.8 months
- Adjuvant nivolumab reduced recurrence by 44% vs observation in stage IIIB/C (HR 0.56)
- Ipilimumab adjuvant therapy lowered 3-year recurrence risk to 46% from 59% placebo
- Targeted therapy (BRAF/MEKi) in stage III decreased 2-year recurrence to 39% vs 52%
- LDH >2x ULN post-treatment HR 3.5 recurrence risk
- High tumor mutational burden (>10 mut/Mb) HR 0.65 recurrence, protective
- Neoantigen quality score >3.1 predicted low recurrence risk (HR 0.4)
Melanoma recurrence risks depend heavily on stage and specific patient factors.






