Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
let1U022804896
let1AL0350654896rpt6    SPBC23G7.12c   
LET1X7037328985
let1NC_0034234896SPBC23G7.12c   

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

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Text2Knowledge ... Yong Huang 2002