Your Query returns 12 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Mch2NM_03177510116Casp6   
MCH2BC0003059606CASP6    601532 606111
MCH2BC0044609606CASP6    601532 606111
MCH2NM_0012269606CASP6    601532 606111
MCH2NM_0329929606CASP6    601532 606111
MCH2NM_0325039606SLT    MCH2R    MCHR2    GPR145    601532 606111
Mch2BC00202210090mCASP-6    Casp6    601532 606111
Mch2NM_00981110090mCASP-6    Casp6    601532 606111
Mch2U205369606601532 606111
Mch2U205379606601532 606111
Mch2AF02567010116
MCH20N/A

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

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Text2Knowledge ... Yong Huang 2002