PPT2-EGFL8 readthrough (PPT2-EGFL8)

The PPT2-EGFL8 locus represents a read-through transcript between the palmitoyl-protein thioesterase 2 (PPT2) and EGF-like domain multiple 8 (EGFL8) genes, found within the major histocompatibility complex region on chromosome 6. This transcript is classified as a nonsense-mediated decay (NMD) candidate and is generally not thought to produce a functional protein product[3][7]. The fusion gene has been implicated in rare genetic disorders with developmental abnormalities and intellectual disability, possibly through the unique structure combining the phosphatase domain of PPT2 with an EGFL8 domain[1]. However, its precise biological function and clinical significance remain largely hypothetical, with most functional disease data attributed to PPT2 itself, a lysosomal enzyme involved in palmitoyl-CoA hydrolysis and lipid metabolism[2][5][8]. PPT2 deficiency leads to neurodegenerative disorders in model organisms, but the PPT2-EGFL8 fusion transcript has limited direct clinical or therapeutic characterization.

Other names

PPT-2PPT2Lysosomal thioesterase PPT2S-thioesterase G14C6orf8EGFL8 readthroughPPT2-EGFL8

None established for this transcript. For PPT2 enzyme: palmitoyl-CoA hydrolysis by lysosomal thioesterase mechanism