Your Query returns 5 Accession Numbers:
Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
IL1RBBC0277339606MGC47725    IL1R2    147811
IL1RBBC0390319606MGC47725    IL1R2    147811
IL1RBNM_0046339606MGC47725    IL1R2    147811
IL1RBNM_1733439606MGC47725    IL1R2    147811
IL1RBAJ27711012643

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

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Text2Knowledge ... Yong Huang 2002