Your Query returns 9 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
C21orf33BC0035879606ES1    GT335    HES1    D21S2048E    KNPI    KNP-Ia    KNPH    KNP-I    601659
C21orf33BC0023709606ES1    GT335    HES1    D21S2048E    KNPI    KNPH    KNP-I    601659
C21orf33AP0017539606601659
C21orf33AY4195539606601659
C21orf33AY4195549598
C21orf33AY41955510090601659
C21orf33NM_1981559606ES1    HES1    KNPH    KNPI    GT335    KNP-I    D21S2048E    601659
C21orf33NM_0046499606ES1    HES1    KNPH    KNPI    GT335    KNP-I    D21S2048E    601659
C21orf33NT_0115159606601659

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

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Text2Knowledge ... Yong Huang 2002