Your Query returns 5 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
2-21NM_02062210090FAM3B    D16Jhu19e    9030624C24Rik    ORF9   
2-21BC04894910090FAM3B    ORF9   
2-21BC0578299606PRED44    C21orf11    ORF9    C21orf76    FAM3B   
2-21NM_0581869606ORF9    PRED44    C21orf11    C21orf76    FAM3B   
2-21NM_2069649606ORF9    PRED44    C21orf11    C21orf76    FAM3B   

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

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Text2Knowledge ... Yong Huang 2002