Your Query returns 8 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
tbx15AF4485047955
tbx15NM_1536647955
TBX15XM_3529379606604127
Tbx15AF04182210090604127
Tbx15NT_03923910090604127
Tbx15NM_00932310090de    604127
TBX15NT_0047549606604127
TBX15XM_3712849606604127

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

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Text2Knowledge ... Yong Huang 2002