Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
CMD1DBC0026539606CMH2    TNNT2    191045
CMD1DNM_0003649606CMH2    TNNT2    191045

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

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Text2Knowledge ... Yong Huang 2002