Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
PITALRENM_13086010090Cdk9   
PITALREBC0019689606CDC2L4    C-2k    TAK    CDK9   
PITALRENM_0012619606TAK    C-2k    CDC2L4    CDK9   
PITALREBC00390110090Cdk9   

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

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Text2Knowledge ... Yong Huang 2002