- Periaxin (PRX)
- Proline Rich Transmembrane Protein 1 (PRRT1)
- Phosphoribosyl Pyrophosphate Synthetase Associated Protein 2 (PRPSAP2)
- Phosphoribosyl Pyrophosphate Synthetase Associated Protein 1 (PRPSAP1)
- Phosphoribosyl Pyrophosphate Synthetase 2 (PRPS2)
- Phosphoribosyl Pyrophosphate Synthetase 1 (PRPS1)
- Prion Protein 2, Dublet (PRND)
- Protamine 2 (PRM2)
- Protamine 1 (PRM1)
- Prolactin Receptor (PRLR)
- Prolactin Releasing Hormone (PRLH)
- Protein Kinase, Y-Linked (PRKY)
- Protein Kinase, X-Linked (PRKX)
- Protein Kinase, cGMP Dependent Type II (PRKG2)
- Protein Kinase, cGMP Dependent Type I (PRKG1)
