Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
MGC10317NM_0048789606PGES    PIG12    PP102    PP1294    MGST-IV    MGST1L1    TP53I12    MGST1-L1    PTGES   
MGC10317NM_1987979606PGES    PIG12    PP102    PP1294    MGST-IV    MGST1L1    TP53I12    MGST1-L1    PTGES   

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

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Text2Knowledge ... Yong Huang 2002