Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Hook2-pendingNT_07859910090
Hook2-pendingBC02660910090MGC28586   
Hook2-pendingBC01948610090MGC28586    A630054I03Rik   
Hook2-pendingBC05588110090MGC28586    A630054I03Rik   

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

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Text2Knowledge ... Yong Huang 2002