Your Query returns 16 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
alas2BC0563387955alas-e    cb1063   
ALAS2U170839615
Alas2NM_00965310090ALAS    Alas-2    301300
ALAS2AY1903229606301300
ALAS2BC0302309606ANH1    ASB    301300
ALAS2AF0686249606301300
ALAS2X672709606301300
ALAS2NM_0000329606ASB    ANH1    301300
Alas2SEG_AB085234S10090301300
Alas2AB08523510090301300
Alas2NT_03971810090301300
Alas2BC02457510090ALAS    301300
alas2NM_1316827955alas-e   
alas2BC0671497955alas-e    cb1063   
ALAS2NT_0116309606301300
Alas2NM_01319710116

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

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Text2Knowledge ... Yong Huang 2002