Your Query returns 13 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
HPS1AF4501339606HPS    604982
Hps1NM_01942410090ep    Hps    6030422N11Rik    604982
Hps1NW_04756610116
Hps1NT_07963710116
Hps1NM_04066910116Hps   
HPS1BC0001759606HPS    MGC5277    604982
HPS1NM_0001959606HPS    MGC5277    604982
HPS1NM_1826379606HPS    MGC5277    604982
HPS1NM_1826389606HPS    MGC5277    604982
HPS1NM_1826399606HPS    MGC5277    604982
Hps1NT_03969210090604982
Hps1BC04632910090ep    Hps    6030422N11Rik    604982
HPS1NT_0300599606604982

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

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Text2Knowledge ... Yong Huang 2002