Based on limited published evidence, ACTR5 is a proposed core component of the INO80 chr20 remodeling complex involved in transcriptional regulation, DNA replication, and DNA repair. UniProt annotations indicate roles in DNA double-strand break repair, UV-damage excision repair, and regulation of DNA-templated transcription. Recent studies identified ACTR5 variants in childhood-onset systemic lupus erythematosus, where a de novo variant enhanced type I interferon signaling 1, and in recessive intellectual disability 2, suggesting potential involvement in immune and neurological pathways, though mechanisms require further investigation.