Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
PEPCK1BC0239789606PEPCKC    MGC22652    PCK1   
PEPCK1NM_0025919606PEPCKC    MGC22652    PCK1   
PEPCK1AY238893176275

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

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Text2Knowledge ... Yong Huang 2002