Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
R-PTP-NBC0077139606IA-2    IA-2/PTP    ICA512    IA2    PTPRN   
R-PTP-NNM_0028469606IA2    IA-2    ICA512    IA-2/PTP    PTPRN   

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

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Text2Knowledge ... Yong Huang 2002