Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
NEB1BC0031019606NAR    CPSF30    CPSF4    603052
NEB1BC0507389606NAR    CPSF30    CPSF4    603052
NEB1NM_0066939606NAR    CPSF30    CPSF4    603052
Neb1NM_05347310116

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

Google

Text2Knowledge ... Yong Huang 2002