Fusion-class: An S4 class to represent a fusion event.
In chimeraviz: Visualization tools for gene fusions

The Fusion class represents a fusion event, holding data imported from a fusion tool.

id: A unique id representing a fusion event. For deFuse data this will be the cluster id.
fusion_tool: Name of the fusion tool.
genome_version: Name of the genome used to map reads.
spanning_reads_count: The number of spanning reads supporting the fusion.
split_reads_count: The number of split reads supporting the fusion.
fusion_reads_alignment: A Gviz::AlignmentsTrack object holding the fusion reads aligned to the fusion sequence.
gene_upstream: A PartnerGene object holding information of the upstream fusion partner gene.
gene_downstream: A PartnerGene object holding information of the downstream fusion partner gene.
inframe: A logical value indicating whether or not the downstream fusion partner gene is inframe or not. Not all fusion-finders report this.
fusion_tool_specific_data: A list that will hold fields of importance for a specific fusion finder. This field is used because many fusion-finders report important values that are hard to fit into a standardized format. Examples of values that are added to this list is probability from deFuse and EricScore from EricScript.