Your Query returns 14 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Dkk1NM_01005110090mdkk-1    605189
DKK1BC0015399606SK    DKK-1    605189
DKK1AH0098349606605189
DKK1AF2611579606605189
DKK1AF2611589606605189
DKK1AY4132839606605189
DKK1AY4132849598
DKK1AY41328510090605189
DKK1NM_0122429606SK    DKK-1    605189
Dkk1NT_03968710090605189
Dkk1BC05018910090mdkk-1    605189
dkk1AB0234887955
dkk1AF1168527955
DKK1NT_0085839606605189

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

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Text2Knowledge ... Yong Huang 2002