Finally, our patients were categorized into groups according to their PLA1A levels as lower than, equal to, or higher than the median expression of PLA1A (FC: 0.072 for PLA1A mRNA expression and 40.91 μg/L for serum PLA1A levels) to determine any possible relationship between PLA1A expression and disease-free survival (DFS) of melanoma patients using the Kaplan–Meier method and log-rank test (Fig. 5A). Here, PLA1A is linked to melanoma.