In patients with type 2 dibetes and moderate-to-severe chronic kidney disease, dulaglutide treatment led to body weight (BW) loss and lesser eGFR decline compared to insulin glargine. As BW may affect muscle mass, creatinine-based eGFR can be altered independently of kidney function. Cystatin C-based eGFR is not affected by muscle mass. The objective of this post-hoc analysis was to determine whether the lesser eGFR decline with dulaglutide was related to BW loss. Baseline characteristics were similar between treatments ([mean ± SD] age, 64.6 ± 8.6 years; women, 48%; BW, 89.1 ± 17.7 kg; eGFR [CKD-EPI-cystatin C] 38 ± 14 mL/min/1.73m2 ). BW decreased with dulaglutide 1.5 and 0.75 mg and increased with insulin glargine ([LSM change (SE)], -2.66 [0.47] kg and -1.71 [0.45] vs 1.57 [0.43] kg; P < 0.001). Changes in eGFR were not significant with dulaglutide 1.5 and 0.75 mg, but eGFR significantly decreased with insulin glargine (eGFR-CKD-EPI-cystatin C [LSM change (95%CI)], -0.7 [-2.5, 1.0] and -0.7 [-2.4, 1.1] vs -3.3 [-5.1, -1.6] mL/min/1.73 m2 ; P ≤ 0.037 vs glargine). Changes in BW did not correlate with changes in eGFR-CKD-EPI-cystatin C (r = -0.041; n = 471; P = 0.379) or eGFR-CKD-EPI-creatinine (r = -0.074; n = 473; P = 0.106). In conclusion, the lesser decline in eGFR observed with dulaglutide was not influenced by BW loss.
Keywords: GLP-1; type 2 diabetes.
© 2019 John Wiley & Sons Ltd.