Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Nrxn4NM_01678210090NCP1    p190    Caspr    Cntnap1    604569 602346
NRXN4NM_0036329606P190    CASPR    CNTNAP    CNTNAP1    604569 602346
NRXN4NM_0141419606CASPR2    CNTNAP2    604569 602346

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

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Text2Knowledge ... Yong Huang 2002