GDC Terminology Molecular Sequence Variation Type GDC Value Terminology Gene Abnormality Gene Fusion Abnormality Fusion C45584 Gene Fusion Abnormality Gene Fusion Fusion of two genes or segments of genes that were previously separated prior to a mutation abnormality such as translocation. A gene fusion abnormality results in the formation of a new genetic unit that typically exhibits altered functional characteristics. This type of mutation abnormality can be either heritable or occur somatically. Cell or Molecular Dysfunction Fusion C1705736 Gene Fusion Abnormality Gene_Fusion_Abnormality GDC