Your Query returns 6 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
HTR1NC_0011394932PUF5    UTH4    MPT5   
HTR1NC_0011364932DGT1    BPC1    MTH1   
htr1AE00507564091VNG1659G   
HTR1D255414932
htr1AE00443764091VNG1659G   
htr1NC_00260764091

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

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Text2Knowledge ... Yong Huang 2002