From Array Suite Wiki
In Fusion report
If the value is InFamilyList, it means the gene pair belongs to the same gene family (defined by HGNC). If the value is InParalogueList, it means the gene pair does not belong to HGNC based gene family, but they belong to two genes that are in the same paralogue group (defined by Ensembl v74, which we finally downloaded the database from Biomart). If it is SameEnsemblGene, it means that these two genes actually are overlapping a “super” ensemble gene (note the fusion comes from UCSC gene model).
See detail definition in Fusion gene detection in RNA-Seq