Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
pbxyNM_1316127955PBX2    fb73g03    wu:fb73g03   
pbxyAJ2459657955

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

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Text2Knowledge ... Yong Huang 2002