- Sperm Associated Antigen 4 (SPAG4)
- Sperm Associated Antigen 5 (SPAG5)
- Sperm Associated Antigen 6 (SPAG6)
- Sperm Associated Antigen 7 (SPAG7)
- Sperm Associated Antigen 8 (SPAG8)
- Sperm Associated Antigen 9 (SPAG9)
- Spindlin 2 (SPIN2)
- Sterol Regulatory Element Binding Transcription Factor 2 (SREBF2)
- Signal Sequence Receptor Beta (SSRb)
- Signal Sequence Receptor Gamma (SSRg)
- Signal Sequence Receptor Delta (SSRd)
- Stabilin 2 (STAB2)
- Stanniocalcin 2 (STC2)
- Ribonucleotide Reductase M1 (RRM1)
- Ribonucleotide Reductase M2 (RRM2)
