Below is a list of Ultraconserved Non-Coding Elements (UCNEs) that reside on the chromosome chr21 in the Human genome (hg19 assembly).

UCNE name	UCNE ID	Position	Type	Length	Overlapping gene	Upstream gene	Downstream gene	Paralogs
NRIP1_Joshua	22575	chr21:16375835-16376234	UTR3	400	NRIP1
NRIP1_Virginia	22577	chr21:16377738-16378047	UTR3	310	NRIP1
NRIP1_Zhong	22578	chr21:16424010-16424348	UTR3	339	NRIP1
chr21_Aaron	22607	chr21:17906778-17907195	intron	418	C21orf34
chr21_Abraham	22609	chr21:17951954-17952219	intron	266	C21orf34
OLIG2_Eduardo	22673	chr21:34291133-34291434	intergenic	302		C21orf62	OLIG2
OLIG2_Joshua	22675	chr21:34327487-34327783	intergenic	297		C21orf62	OLIG2
OLIG2_Laura	22678	chr21:34350507-34350710	intergenic	204		C21orf62	OLIG2
OLIG2_Midori	22681	chr21:34380787-34380996	intergenic	210		C21orf62	OLIG2
OLIG2_Ryan	22682	chr21:34468038-34468399	intergenic	362		OLIG1	C21orf54
chr21_Akiko	22730	chr21:38190237-38190464	intron	228	HLCS
chr21_Eden	22741	chr21:38885584-38886338	UTR3	755	DYRK1A
chr21_Faust	22743	chr21:38887217-38887502	UTR3	286	DYRK1A			chr17:2430807-2430961;
chr21_Frodo	22751	chr21:40033881-40034120	intergenic	240		ERG	NCRNA00114
chr21_Gabriel	22783	chr21:44521353-44521629	UTR3	209	U2AF1