Your Query returns 7 Accession Numbers:

Query Term	Accession	NCBI Taxonid	Synonyms	Phenotype (OMIM) *
PTC4	BC000453	9606	PCM1	600299
PTC4	BC065022	9606	PCM1	600299
PTC4	NM_006197	9606	PCM1	600299
ptc4	AF140285	4896
ptc4	Z98762	4896	SPAC4A8.03c
ptc4	NC_003424	4896	SPAC4A8.03c
PTC4	NC_001134	4932	GCT1

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

Text2Knowledge ... Yong Huang 2002