Your Query returns 13 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Stxbp3NM_01150410090Sxtbp3    Munc-18c   
Stxbp3NW_04762710116
STXBP3BC0280289606UNC-18C   
STXBP3BC0380999606UNC-18C   
STXBP3BC0477649606UNC-18C    MUNC18-3    MUNC18C    PSP   
STXBP3AY4039239606
STXBP3AY4039249598
STXBP3AY40392510090
STXBP3NM_0072699606PSP    MUNC18C    UNC-18C    MUNC18-3   
Stxbp3NT_03923910090
Stxbp3BC06290110090Munc-18c   
STXBP3NT_0192739606
Stxbp3NM_05363710116Munc18-c   

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

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Text2Knowledge ... Yong Huang 2002