IFNA1 and melanoma: As a first approach to analyze the data resulting from the microarray experiments on the PBMC isolated from melanoma patients (study 1, Figure 1A) and healthy subjects receiving HBV vaccine plus IFNα (study 2, Figure 1C), the two complete data sets profiling each 17,000 genes were independently filtered to sort out the most informative genes (80% gene presence across all experiments and at least 3-fold ratio change).