Your Query returns 7 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Hook1BC03087710090azh    Hook1-pending   
Hook1BC06168810090Hook1-pending   
Hook1NM_03001410090azh    A930033L17Rik   
HOOK1BC0116219606HK1   
HOOK1AF0449239606
HOOK1NM_0158889606HK1   
HOOK1NT_0329779606

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

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Text2Knowledge ... Yong Huang 2002