SNORD109B, Official Symbol SNORD109Bprovided by HGNC Official Full Name small nucleolar RNA, C/D box 109Bprovided by HGNC Primary source HGNC:HGNC:32774 See related Ensembl:ENSG00000239169 AllianceGenome:HGNC:32774 Gene type snoRNA RefSeq status REVIEWED Organism Homo sapiens Lineage Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo Also known as HBII-438B Summary This gene encodes a C/D box-type small nucleolar RNA that is expressed predominantly in the brain. Expression of this RNA is not detectable in the brains of patients with Prader-Willi syndrome. [provided by RefSeq, Jun 2010]