Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
P-TEFNG_0005817227CDK9    PTefb    CG5179    P-TEFb    CT16479    p43 PITALRE   
P-TEFNM_0578787227CDK9    PTefb    CG5179    P-TEFb   
P-TEFNT_0337787227CDK9    PTefb    CG5179    P-TEFb   

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

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Text2Knowledge ... Yong Huang 2002