chr	group_id	NB_Genes	location	strand	ENS_ID	Name	Description
12	589	2	121570622	1	ENSG00000089041	P2RX7	purinergic receptor P2X, ligand-gated ion channel, 7 [Source:HGNC Symbol;Acc:8537]
12	589	2	121647660	1	ENSG00000135124	P2RX4	purinergic receptor P2X, ligand-gated ion channel, 4 [Source:HGNC Symbol;Acc:8535]