Your Query returns 9 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Plekhb1NM_01374610090PHR1    evt-1    Phret1    607651
PLEKHB1BC0080759606PHR1    KPL1    PHRET1    607651
PLEKHB1AY4006509606607651
PLEKHB1AY4006519598
PLEKHB1AY40065210090607651
PLEKHB1NM_0212009606KPL1    PHR1    PHRET1    607651
Plekhb1NT_03942910090607651
Plekhb1BC02475610090PHR1    evt-1    607651
PLEKHB1NT_0339279606607651

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

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Text2Knowledge ... Yong Huang 2002