Your Query returns 8 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Chek2NM_01668110090CHK2    Cds1    Rad53    HUCDS1    604373
CHEK2BC0042079606CHK2    CDS1    HuCds1    PP1425    RAD53    bA444G7    604373
CHEK2NM_0071949606CDS1    CHK2    RAD53    HuCds1    PP1425    bA444G7    604373
CHEK2NM_1458629606CDS1    CHK2    RAD53    HuCds1    PP1425    bA444G7    604373
Chek2NT_03930810090604373
Chek2BC05661710090CHK2    Cds1    HUCDS1    604373
CHEK2AY33564832630
CHEK2NT_0115209606604373

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

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Text2Knowledge ... Yong Huang 2002