Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
cg2647BX927155196627tig   
CG2647AE0034257227per   
CG2647NC_0043547227Clk    PER    dPER    clk-6    dperiod    EG:155E2.4   
CG2647NM_0803177227Clk    PER    dPER    clk-6    dperiod    EG:155E2.4   

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

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Text2Knowledge ... Yong Huang 2002