Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
2410083I15RikNM_00855410090Mash2    Ascl2   
2410083I15RikBC01952010090Ascl2   

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

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Text2Knowledge ... Yong Huang 2002