Your Query returns 12 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
myogAB1106009913
MyogNM_03118910090myo    MYF4    159980
myogNM_1310067955cb553   
MyogNW_04739510116
MYOGBC0538999606MYF4    MYOGENIN    159980
MYOGNM_0024799606MYF4    MYOGENIN    159980
MyogNT_03918010090159980
MYOGNT_0046719606159980
MyogNM_01711510116
MYOGNM_2041849031
MyoGAY56628231033
MYOGAY57680599883

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

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Text2Knowledge ... Yong Huang 2002