RT Journal Article T1 Real clinical experience after one year of treatment with tolvaptan in patients with autosomal dominant polycystic kidney disease. A1 Naranjo, Javier A1 Borrego, Francisco A1 Rocha, Jose Luis A1 Salgueira, Mercedes A1 Martin-Gomez, Maria Adoracion A1 Orellana, Cristhian A1 Morales, Ana A1 Vallejo, Fernando A1 Hidalgo, Pilar A1 Rodriguez, Francisca A1 Garofano, Remedios A1 Gonzalez, Isabel A1 Esteban, Rafael A1 Espinosa, Mario K1 glomerular filtration rate (eGFR) K1 hepatic toxicity K1 polycystic kidney disease (PKD) K1 tolvaptan K1 urinary osmolality AB Tolvaptan (TV) is the first vasopressin-receptor antagonist approved for the treatment of autosomal dominant polycystic kidney disease (ADPKD). No publications report TV experience in real clinical practice during the first year of treatment. A prospective study of an initial cohort of 220 rapidly progressing patients treated with TV for 12 months. The tolerability of TV, the evolution of the estimated glomerular filtration rate (eGFR), analytical parameters, and blood pressure were analyzed. A total of 163 patients (78.2%) received TV for 1 year. The main causes of treatment withdrawal were the aquaretic effects (11%), eGFR deterioration (5%), and hepatic toxicity (2.3%). eGFR decreased significantly after 1 month of treatment without further changes. The decrease in eGFR in the first month was higher in patients with an initially higher eGFR. The eGFR drop during the first year of treatment with TV was lower than that reported by patients in the 2 years prior to TV treatment (-1.7 ± 7.6 vs. -4.4 ± 4.8 mL/min, p = 0.003). Serum sodium and uric acid concentrations increased, and morning urinary osmolality decreased in the first month, with no further changes. Blood pressure decreased significantly without changes in antihypertensive medication. TV treatment is well tolerated by most patients. Liver toxicity is very rare and self-limited. TV reduces eGFR in the first month without showing further changes during the first year of treatment. Patients with a higher starting eGFR will suffer a greater initial drop, with a longer recovery. We suggest using the eGFR observed after a month of treatment as the reference for future comparisons and calculating the rate of eGFR decline in patients undergoing TV treatment. PB Frontiers Research Foundation SN 2296-858X YR 2022 FD 2022-08-31 LK http://hdl.handle.net/10668/20610 UL http://hdl.handle.net/10668/20610 LA en NO Naranjo J, Borrego F, Rocha JL, Salgueira M, Martín-Gomez MA, Orellana C, et al. Real clinical experience after one year of treatment with tolvaptan in patients with autosomal dominant polycystic kidney disease. Front Med (Lausanne). 2022 Sep 29;9:987092. DS RISalud RD Apr 8, 2025