Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
GnpasBC06196710116Gnasxl    Gnas1    Gnas   
GnpasNM_01913210116Gnas1    Gnasxl    Gnas   
GNPASU5156510116

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

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Text2Knowledge ... Yong Huang 2002