- Retinoic Acid Receptor Responder 1 (RARRES1)
- Rap Guanine Nucleotide Exchange Factor 6 (RAPGEF6)
- Rap Guanine Nucleotide Exchange Factor 5 (RAPGEF5)
- Rap Guanine Nucleotide Exchange Factor 4 (RAPGEF4)
- Rap Guanine Nucleotide Exchange Factor 3 (RAPGEF3)
- Rap Guanine Nucleotide Exchange Factor 2 (RAPGEF2)
- Receptor Activity Modifying Protein 1 (RAMP1)
- Receptor Activity Modifying Protein 2 (RAMP2)
- Receptor Activity Modifying Protein 3 (RAMP3)
- Ral Guanine Nucleotide Dissociation Stimulator (RALGDS)
- RalA Binding Protein 1 (RALBP1)
- Renal Tumor Antigen (RAGE)
- Recombination Activating Gene 2 (RAG2)
- Recombination Activating Gene 1 (RAG1)
- Retinoic Acid Early Transcript 1L (RAET1L)
