Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
HsCDC6BC0252329606CDC18L    HsCDC18    CDC6   
HsCDC6NM_0012549606CDC18L    HsCDC18    CDC6   
HsCDC6U779499606

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

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Text2Knowledge ... Yong Huang 2002