Your Query returns 16 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
CAMK2AAY4654299685
Camk2aNW_04751410116
Camk2aNM_01292010116PKCCD    PK2CDD   
CAMK2AAY3697909598
CAMK2AAY3697919544
CAMK2ABC0404579606CAMKA    KIAA0968    114078
CAMK2ANM_0159819606CAMKA    KIAA0968    114078
CAMK2ANM_1718259606CAMKA    KIAA0968    114078
Camk2aAB05943210116
Camk2aNT_08238110090114078
Camk2aBC03174510090CaMKII    114078
CAMK2AAY33570932630
CAMK2ANT_0292899606114078
Camk2aNM_17740710090CaMKII    mKIAA0968    114078
Camk2aNM_00979210090CaMKII    mKIAA0968    114078
CAMK2ANM_2042959031

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

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Text2Knowledge ... Yong Huang 2002