Your Query returns 7 Accession Numbers:
Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Ptpn21NM_01187710090PTPD1    PTPRL10   
PTPN21AL3537869606
PTPN21NM_0070399606PTPD1    PTPRL10   
Ptpn21NT_03955210090
Ptpn21BC05594210090PTPD1    PTPRL10   
PTPN21NT_0264379606
Ptpn21BC06685610090PTPD1    PTPRL10   

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

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Text2Knowledge ... Yong Huang 2002