Abstract | INTRODUCTION: METHODS: A post hoc analysis of tolvaptan-related discontinuations from the pivotal randomized controlled trial TEMPO 3:4 and its open-label extension TEMPO 4:4. RESULTS: In total, 750 of 961 tolvaptan-treated subjects (78%) in TEMPO 3:4 reported at least one AAE. Of these 750 subjects, 72 (10%) discontinued because of an AAE (aquaretic-discontinued group) and 573 (76%) continued (aquaretic-continued group). The aquaretic-discontinued subjects were younger, had better baseline renal function, and had higher fasting urine osmolality than aquaretic-continued subjects. Of the 750 subjects reporting an AAE, 105 (14%) discontinued for another reason (non-aquaretic-discontinued group). Compared to non-aquaretic-discontinued subjects, aquaretic-discontinued subjects were more commonly male, had better baseline renal function, and discontinued the study drug faster. After 3 years of therapy, 75% of tolvaptan subjects indicated that they could tolerate their current dose for the rest of their lives, compared to 85% of placebo subjects. These findings were corroborated by results in the open-label extension trial TEMPO 4:4. DISCUSSION: In this study, AAEs were common but well tolerated in ADPKD patients on tolvaptan. ADPKD patients in earlier stages of disease progression may be more sensitive to aquaretic symptoms, which may help in guiding tolvaptan dosing and titration decisions in the future.
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Authors | Olivier Devuyst, Arlene B Chapman, Susan E Shoaf, Frank S Czerwiec, Jaime D Blais |
Journal | Kidney international reports
(Kidney Int Rep)
Vol. 2
Issue 6
Pg. 1132-1140
(Nov 2017)
ISSN: 2468-0249 [Electronic] United States |
PMID | 29270521
(Publication Type: Journal Article)
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