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Add on dapagliflozin may attenuate fluid retention caused by high doses of zibotentan in CKD: Study
Add-on dapagliflozin may attenuate fluid retention caused by high doses of zibotentan in CKD suggests a study published in the Journal of the American Society of Nephrology.
Endothelin receptor antagonists (ERAs) reduce albuminuria but are limited by fluid retention risk, particularly in patients with chronic kidney disease (CKD). Combining ERAs with sodium-glucose cotransporter 2 (SGLT2) inhibitors, which have diuretic effects, offers a promising strategy to mitigate fluid retention. In this post-hoc analysis of the ZENITH-CKD trial, we assessed fluid dynamics in patients with CKD treated with the ERA zibotentan alone, and in combination with the SGLT2 inhibitor dapagliflozin.In ZENITH-CKD, 508 patients with CKD (estimated glomerular filtration rate ≥ 20 mL/min/1.73m2 and a urinary albumin-to-creatinine ratio of 150–5000 mg/g) were randomized to treatment with placebo, dapagliflozin 10 mg plus placebo, zibotentan (0.25, 1.5 or 5 mg) plus dapagliflozin 10 mg and zibotentan 5 mg plus placebo. We evaluated correlations between changes in fluid retention markers and bioimpedance-measured extracellular fluid (ECF) in response to zibotentan treatment. We used Cox proportional hazards regression to assess the association between zibotentan/dapagliflozin treatment, baseline characteristics, and fluid retention, and the relationship between zibotentan plasma exposure and fluid retention.
Results: After 3 weeks of treatment with zibotentan 0.25, 1.5 or 5 mg plus dapagliflozin 10 mg, changes in body weight (β=0.36 [95%CI 0.26,0.45]) per kg, B-type natriuretic peptide (β=0.38 [95%CI 0.22, 0.54]) per doubling, and haemoglobin (β=-0.29 [95%CI -0.48, -0.10]) per g/dL were independently associated with changes in ECF. Higher doses of zibotentan were associated with a significantly higher risk of fluid retention compared to dapagliflozin alone (zibotentan 5 mg HR 8.50 (95%CI 3.40, 21.30). The hazard ratio attenuated when zibotentan was combined with dapagliflozin (HR zibotentan/dapagliflozin 5/10 mg 3.09 [95%CI 1.08, 8.80], zibotentan/dapagliflozin 1.5/10 mg 2.70 [95%CI 1.44, 5.07] and zibotentan/dapagliflozin 0.25/10 mg HR 1.21 [95%CI 0.50, 2.91]). The risk of fluid retention was higher with higher zibotentan exposure and lower eGFR. High doses of zibotentan were associated with a higher risk of fluid retention, which was attenuated with lower doses and the addition of dapagliflozin.
Reference:
Smeijer, J. David1; Wasehuus, Victor S2; Dhaun, Neeraj3; Gorriz, Jose Luis4; Soler, Maria José5; Åstrand, Magnus6; Mercier, Anne-Kristina6; Greasley, Peter J.6; Ambery, Phil6; Heerspink, Hiddo J.L.1,7,a. Effects of Zibotentan Alone and in Combination with Dapagliflozin on Fluid Retention in Patients with CKD. Journal of the American Society of Nephrology ():10.1681/ASN.0000000000000436, July 12, 2024. | DOI: 10.1681/ASN.0000000000000436
Dr. Shravani Dali has completed her BDS from Pravara institute of medical sciences, loni. Following which she extensively worked in the healthcare sector for 2+ years. She has been actively involved in writing blogs in field of health and wellness. Currently she is pursuing her Masters of public health-health administration from Tata institute of social sciences. She can be contacted at editorial@medicaldialogues.in.
Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751