Your Query returns 6 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
AMPH1BC0343769606AMPH   
AMPH1NM_0016359606AMPH   
AMPH1NM_1393169606AMPH   
Amph1NW_04749210116
amph1Y1338110116
Amph1NM_02221710116

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

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Text2Knowledge ... Yong Huang 2002