Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
JV18BC0148409606JV18-1    MADR2    SMAD2    MADH2    601366
JV18BC0256999606JV18-1    MADR2    SMAD2    MADH2    601366
JV18NM_0059019606MADR2    SMAD2    JV18-1    MADH2    601366

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

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Text2Knowledge ... Yong Huang 2002