Your Query returns 5 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
IGKJRB1NM_2032849606csl    CBF1    KBF2    RBP-J    RBPJK    IGKJRB    MGC61669    RBPSUH    147183
IGKJRB1NM_2032839606csl    CBF1    KBF2    RBP-J    RBPJK    IGKJRB    MGC61669    RBPSUH    147183
IGKJRB1NM_0053499606csl    CBF1    KBF2    RBP-J    RBPJK    IGKJRB    MGC61669    RBPSUH    147183
IGKJRB1NM_0158749606csl    CBF1    KBF2    RBP-J    RBPJK    IGKJRB    MGC61669    RBPSUH    147183
IGKJRB1BC0649769606KBF2    RBPJK    IGKJRB    csl    CBF1    RBP-J    MGC61669    RBPSUH    147183

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

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Text2Knowledge ... Yong Huang 2002