Your Query returns 23 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
PRF1BC0012379606PBF    170280
PRF1NM_0186609606HDBP2    DKFZp434K1210    PBF    170280
PRF1NC_0011474932PFY1   
prf1AL5961731642
prf1AL5919831639
prf1U407535270
prf1X82071287
PRF1U435933702
PRF1U435903702
PRF1M283939606170280
PRF1M319519606170280
PRF1L405579606170280
PRF1BC0476959606PFP    HPLH2    P1    170280
PRF1BC0630439606PFP    HPLH2    P1    170280
PRF1AY4107939606170280
PRF1AY4107949598
PRF1AY41079510090170280
Prf1NT_03949510090170280
prf1NC_0032121642
prf1NC_003210169963
PRF1NT_0085839606170280
PRF1NM_0050419606P1    PFP    HPLH2    MGC65093    170280
Prf1NM_01107310090Pfp    Prf-1    perforin    170280

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

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Text2Knowledge ... Yong Huang 2002