Family with sequence similarity 169 member A (FAM169A)

Family with sequence similarity 169 member A (FAM169A, also known as SLAP or SLAP75) is a protein localized to the nuclear envelope, especially the nuclear lamina, and is expressed in a cell-type specific manner[1][2][4]. It lacks predicted transmembrane domains and canonical functional motifs, though bioinformatics suggests it may contain a GCN5-related acetyltransferase domain[2]. FAM169A is highly expressed in neural tissue and is critical for proper nuclear morphology, mitosis, and neuronal migration in brain development[2]. Its circular RNA isoform (circ-FAM169A) acts as a molecular sponge for miR-583 and regulates extracellular matrix turnover in intervertebral disc degeneration by modulating genes such as BTRC and SOX9[3]. Gene perturbations and mutations in FAM169A are associated with neurodevelopmental disorders (including autism and intellectual disability) as well as Emery-Dreifuss muscular dystrophy[2][4]. FAM169A is considered a candidate therapeutic target in the context of degenerative diseases and neurodevelopmental pathways, but no direct targeting drugs are currently documented[3][4].

Other names

Soluble lamin-associated protein of 75 kDaSLAP75SLAPKIAA0888Protein FAM169ASoluble-Lamin Associated ProteinSoluble lamina-associated protein of 75 kD

Not established; indirect modulation via gene expression by small molecules, potentially through circ-FAM169A and microRNA interaction. As a competitive endogenous RNA, circ-FAM169A modulates miR-583, affecting downstream targets.