chr	group_id	NB_Genes	location	strand	ENS_ID	Name	Description
15	654	2	23004684	-1	ENSG00000140157	NIPA2	non imprinted in Prader-Willi/Angelman syndrome 2 [Source:HGNC Symbol;Acc:17044]
15	654	2	23043277	-1	ENSG00000170113	NIPA1	non imprinted in Prader-Willi/Angelman syndrome 1 [Source:HGNC Symbol;Acc:17043]