Your Query returns 13 Accession Numbers:
Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
IA2BC0077139606IA-2    IA-2/PTP    ICA512    R-PTP-N    PTPRN    601773
IA2NM_0028469606IA-2    ICA512    R-PTP-N    IA-2/PTP    PTPRN    601773
Ia2NM_01037910090IAb    Ia-2    Abeta    H-2Ab    H2-Ab    I-A    I-Abeta    H2-Ab1    601773
ia2AF1267406239
ia2AF1267417227
ia2AY1284287227
ia2BT0101077227
ia2NM_1347187227CG4355    CG11344    R-PTPX/1A2   
ia2NM_1644017227CG4355    CG11344    R-PTPX/1A2   
ia2AE0035877227
ia2NM_1347187227CG4355    CG11344    CG31795    R-PTPX/1A2   
ia2NM_1644017227CG4355    CG11344    CG31795    R-PTPX/1A2   
ia2NT_0337797227CG4355    CG11344    CG31795    R-PTPX/1A2   

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

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Text2Knowledge ... Yong Huang 2002