SLC28A1 and nephrotic syndrome: Additionally, CNT1 transports a wide range of antiviral (anti-HIV, anti-hepatitis B/C, anti-herpes) nucleoside drugs (e.g., zidovudine, lamivudine, zalcitabine, stavudine, emtricitabine, trifluridine, etc.)and agents used in the treatment of steroid-resistant nephrotic syndromes (e.g., mizoribine)69 Several reports have shown that these drugs exhibit significant pharmacokinetic variability in patients.