Your Query returns 9 Accession Numbers:

Query Term	Accession	NCBI Taxonid	Synonyms	Phenotype (OMIM) *
GPI2	BC006539	9606	MGC2049 PIGC	601730
GPI2	NM_002642	9606	MGC2049 PIGC	601730
GPI2	NM_153747	9606	MGC2049 PIGC	601730
GPI2	AF050755	5741
gpi2	BX294139	243090	nagB
GPI2	U23788	4932
GPI2	U41849	4932
gpi2	NC_005027	243090	nagB
GPI2	NC_001148	4932	GCR4

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* OMIM link based on symbol match for human and mouse.

Text2Knowledge ... Yong Huang 2002