- CTD Small Phosphatase Like Protein (CTDSPL)
- CTD Small Phosphatase 2 (CTDSP2)
- CTD Small Phosphatase 1 (CTDSP1)
- CTD Phosphatase 1 (CTDP1)
- Di-N-Acetyl Chitobiase (CTBS)
- Cancer/Testis Antigen 1A (CTAG1A)
- Cancer/Testis Antigen 1B (CTAG1B)
- Cancer/Testis Antigen 2 (CTAG2)
- Cutaneous T-Cell Lymphoma Associated Antigen 4 (CTAGE4)
- Cleavage Stimulation Factor 3 (CSTF3)
- Cleavage Stimulation Factor 2 (CSTF2)
- Cleavage Stimulation Factor 1 (CSTF1)
- Cystatin B (CSTB)
- Cystatin 2 (CST2)
- Cystatin 4 (CST4)