In addition, according to a more recent study, multiple single nucleotide polymorphisms in lncRNAs including LINC00461, PLK1S1-007 and RP1-111D6.3, were identified in ADHD individuals and were significantly associated with gray matter alterations of the superior/middle frontal regions [27], while rare structural variants have been identified in two non-coding RNAs genes, LOC124905257 and PTCHD1-AS, in ASD individuals [35]. Here, RP1 is linked to attention deficit-hyperactivity disorder.