Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
IGHD2-15AJ5509339606
IGHD2-15NT_0264379606D2    IGHD215   
IGHD2-15NG_0010199606D2    IGHD215   

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

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Text2Knowledge ... Yong Huang 2002