Circular RNA detection identifies circPSEN1 alterations in brain specific to autosomal dominant Alzheimer’s disease.

Autosomal-dominant Alzheimer’s disease (ADAD) is caused by pathogenic mutations in APP, PSEN1, and PSEN2, which usually lead to an early age at onset (< 65). Circular RNAs are a family of non-coding RNAs highly expressed in the nervous system and especially in synapses. We aimed to investigate differences in brain gene expression of linear and circular transcripts from the three ADAD genes in controls, sporadic AD, and ADAD.