Your Query returns 8 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Act4NM_00961010090SMGA    ACTA3    Act-4    Actg2   
ACT4NC_0011424932ARP3   
act4X167996239
act4X168006239
ACT4U279803702
ACT4L371114932
act4AF482418156230
ACT4AY3057263635

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

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Text2Knowledge ... Yong Huang 2002