Effects of Tirzepatide Versus Insulin Glargine on Cystatin C-Based Kidney Function: A SURPASS-4 Post Hoc Analysis.
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ABSTRACT: Objective
Tirzepatide reduces HbA1c and body weight, and creatinine-based estimated glomerular filtration rate (eGFR) decline. Unlike creatine-derived eGFR (eGFR-creatinine), cystatin C-derived eGFR (eGFR-cystatin C) is unaffected by muscle mass changes. We assessed effects of tirzepatide on eGFR-creatinine and eGFR-cystatin C.Research design and methods
Our primary outcome was eGFR change from baseline at 52 weeks with pooled tirzepatide (5, 10, and 15 mg) and titrated insulin glargine in adults with type 2 diabetes and high cardiovascular risk (SURPASS-4).Results
Least squares mean (SE) eGFR-creatinine (mL/min/1.73 m2) changes from baseline with tirzepatide and insulin glargine were -2.5 (0.38) and -3.9 (0.38) (between-group difference, 1.4 [95% CI 0.3-2.4]) and -3.5 (0.37) and -5.3 (0.37) (between-group difference, 1.8 [95% CI 0.8-2.8]) for eGFR-cystatin C. Baseline, 1-year, and 1-year change from baseline values significantly correlated between eGFR-cystatin C and eGFR-creatinine. Measures of eGFR changes did not correlate with body weight changes.Conclusions
Tirzepatide slows the eGFR decline rate, supporting a kidney-protective effect.
SUBMITTER: Heerspink HJL
PROVIDER: S-EPMC10369133 | biostudies-literature | 2023 Aug
REPOSITORIES: biostudies-literature
Publications
Effects of Tirzepatide Versus Insulin Glargine on Cystatin C-Based Kidney Function: A SURPASS-4 Post Hoc Analysis.
Heerspink Hiddo J L HJL Sattar Naveed N Pavo Imre I Haupt Axel A Duffin Kevin L KL Yang Zhengyu Z Wiese Russell J RJ Wilson Jonathan M JM Hemmingway Andrea A Cherney David Z I DZI Tuttle Katherine R KR
Diabetes care 20230801 8
<h4>Objective</h4>Tirzepatide reduces HbA1c and body weight, and creatinine-based estimated glomerular filtration rate (eGFR) decline. Unlike creatine-derived eGFR (eGFR-creatinine), cystatin C-derived eGFR (eGFR-cystatin C) is unaffected by muscle mass changes. We assessed effects of tirzepatide on eGFR-creatinine and eGFR-cystatin C.<h4>Research design and methods</h4>Our primary outcome was eGFR change from baseline at 52 weeks with pooled tirzepatide (5, 10, and 15 mg) and titrated insulin g ...[more]
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| S-EPMC9298323 | biostudies-literature
Project description:IntroductionTirzepatide, a once-weekly glucose-dependent insulinotropic polypeptide/glucagon-like peptide-1 receptor agonist approved in the US for treating type 2 diabetes (T2D) and obesity, has demonstrated significant improvements in glycated hemoglobin A1c (HbA1c) and clinically meaningful weight loss in the SURPASS-1 to -5 clinical trials. This post hoc analysis examined the safety and efficacy results for tirzepatide in older participants with T2D who do not have obesity.MethodsA post hoc analysis was conducted on a subgroup of participants aged ≥ 65 years with a body mass index (BMI) < 30 kg/m2 amongst the pooled SURPASS-1 through -5 clinical trial populations. Primary efficacy endpoints and safety were assessed for both this subgroup and overall pooled populations.ResultsParticipants aged ≥ 65 years with BMI < 30 kg/m2 treated with tirzepatide experienced clinically meaningful HbA1c reduction (- 1.97 to - 2.10%) regardless of the assigned randomized maintenance dose. In contrast, a dose-proportional HbA1c decrease was observed in the overall population. Weight reduction in this subgroup was dose-proportional but numerically lower than in the overall population. Older participants without obesity were more likely to discontinue treatment due to adverse events (AEs), although the overall incidence of AEs was low in this subgroup. The incidence of hypoglycemia in this group was consistent with that of the overall cohort, regardless of concurrent insulin or sulfonylurea use.ConclusionsTirzepatide may be an effective treatment for older adults without obesity, and in this post hoc analysis, it was associated with clinically relevant HbA1c reduction and dose-proportional weight loss without increasing hypoglycemic risk.
| S-EPMC11925828 | biostudies-literature
Project description:IntroductionThe presence of metabolic abnormalities in patients with type 2 diabetes (T2D) increases the risk of cardiovascular disease and other comorbidities. This analysis compared the effects of tirzepatide (5, 10, and 15 mg) and dulaglutide 0.75 mg on the prevalence of metabolic abnormalities in Japanese patients with T2D.MethodsThis was a post hoc analysis of SURPASS J-mono, a multicenter, randomized, double-blind, active-controlled, parallel-group, phase 3 trial that compared the efficacy and safety of tirzepatide monotherapy (5, 10, and 15 mg) to dulaglutide 0.75 mg in Japanese patients with T2D. Thresholds for abnormalities were based on the Japanese criteria for metabolic syndrome. Proportions of participants meeting a composite endpoint (visceral fat accumulation measured by waist circumference plus two or more of dyslipidemia, hypertension, or hyperglycemia) or individual component thresholds were calculated at baseline and week 52 for the overall population and for baseline body mass index (BMI) subgroups (< 25, 25 to < 30, and ≥ 30 kg/m2).ResultsOf 636 randomized participants, 431 (67.8%) met the composite endpoint at baseline, with similar findings observed across treatment arms. At week 52, the proportion of participants on treatment that met the composite endpoint was 31.7%, 23.0%, and 14.2% in the tirzepatide 5-, 10-, and 15-mg arms, respectively, and 56.5% in the dulaglutide arm (p < 0.001). A higher proportion met the composite endpoint at baseline in the BMI 25 to < 30 and ≥ 30 kg/m2 subgroups (73.2-79.3%) compared with the < 25 kg/m2 subgroup (45.3%), with reductions observed across all BMI subgroups treated with tirzepatide. The proportion of participants with individual metabolic abnormalities showed similar trends to those observed for the composite endpoint. Tirzepatide was consistently superior to dulaglutide across all assessments.ConclusionsTirzepatide reduced the prevalence of multiple metabolic abnormalities, indicating tirzepatide may have metabolic benefit in Japanese patients with T2D.Trial registrationClinicalTrials.gov, NCT03861052.
| S-EPMC10942919 | biostudies-literature
Project description:Abstract Context Tirzepatide is a glucose-dependent insulinotropic polypeptide and glucagon-like peptide-1 receptor agonist approved for treatment of type 2 diabetes (T2D). SURPASS-1, a phase 3 trial of tirzepatide monotherapy in people with early T2D, enables evaluating effects of tirzepatide on pancreatic beta-cell function and insulin sensitivity (IS) without other background antihyperglycemic medications. Objective Explore changes in biomarkers of beta-cell function and IS with tirzepatide monotherapy. Design Post hoc analyses of fasting biomarkers with analysis of variance and mixed model repeated measures. Setting Forty-seven sites in 4 countries. Patients Four hundred seventy-eight T2D participants. Intervention Tirzepatide (5, 10, 15 mg), placebo. Main Outcome Measure(s) Analyze biomarkers of beta-cell function and IS at 40 weeks. Results At 40 weeks, markers of beta-cell function improved with tirzepatide monotherapy vs placebo with reductions from baseline in fasting proinsulin levels (49-55% vs −0.6%) and in intact proinsulin/C-peptide ratios (47-49% vs −0.1%) (P < .001, all doses vs placebo). Increases from baseline in homeostatic model assessment for beta-cell function (computed with C-peptide) (77-92% vs −1.4%) and decreases in glucose-adjusted glucagon levels (37-44% vs +4.8%) were observed with tirzepatide vs placebo (P < .001, all doses vs placebo). IS improved as indicated by reductions from baseline in homeostatic model assessment for insulin resistance (9-23% vs +14.7%) and fasting insulin levels (2-12% vs +15%), and increases in total adiponectin (16-23% vs −0.2%) and insulin-like growth factor binding protein 2 (38-70% vs +4.1%) with tirzepatide vs placebo at 40 weeks (P ≤ .031, all doses vs placebo, except for fasting insulin levels with tirzepatide 10 mg). Conclusions As monotherapy for early T2D, tirzepatide achieved significant improvements in biomarkers of both pancreatic beta-cell function and IS.
| S-EPMC10157777 | biostudies-literature
Project description:AimThis study compared the 5-year incidence rate of macrovascular and microvascular complications for tirzepatide, semaglutide and insulin glargine in individuals with type 2 diabetes, using the Building, Relating, Assessing, and Validating Outcomes (BRAVO) diabetes simulation model.Research design and methodsThis study was a 5-year SURPASS-2 trial extrapolation, with an insulin glargine arm added as an additional comparator. The 1-year treatment effects of tirzepatide (5, 10 or 15 mg), semaglutide (1 mg) and insulin glargine on glycated haemoglobin, systolic blood pressure, low-density lipoprotein and body weights were obtained from the SUSTAIN-4 and SURPASS-2 trials. We used the BRAVO model to predict 5-year complications for each study arm under two scenarios: the 1-year treatment effects persisted (optimistic) or diminished to none in 5 years (conservative).ResultsWhen compared with insulin glargine, we projected a 5-year risk reduction in cardiovascular adverse events [rate ratio (RR) 0.64, 95% confidence interval (CI) 0.61-0.67] and microvascular composite (RR 0.67, 95% CI 0.64-0.70) with 15 mg tirzepatide, and 5-year risk reduction in cardiovascular adverse events (RR 0.75, 95% CI 0.72-0.79) and microvascular composite (RR 0.79, 95% CI 0.76-0.82) with semaglutide (1 mg) under an optimistic scenario. Lower doses of tirzepatide also had similar, albeit smaller benefits. Treatment effects for tirzepatide and semaglutide were smaller but still significantly higher than insulin glargine under a conservative scenario. The 5-year risk reduction in diabetes-related complication events and mortality for the 15 mg tirzepatide compared with insulin glargine ranged from 49% to 10% under an optimistic scenario, which was reduced by 17%-33% when a conservative scenario was assumed.ConclusionWith the use of the BRAVO diabetes model, tirzepatide and semaglutide exhibited potential to reduce the risk of macrovascular and microvascular complications among individuals with type 2 diabetes, compared with insulin glargine in a 5-year window. Based on the current modelling assumptions, tirzepatide (15 mg) may potentially outperform semaglutide (1 mg). While the BRAVO model offered insights, the long-term cardiovascular benefit of tirzepatide should be further validated in a prospective clinical trial.
| S-EPMC11115367 | biostudies-literature
Project description:BackgroundMetabolic syndrome is characterized as the co-occurrence of interrelated cardiovascular risk factors, including insulin resistance, hyperinsulinemia, abdominal obesity, dyslipidemia and hypertension. Once weekly tirzepatide is approved in the US and EU for the treatment of type 2 diabetes (T2D) and obesity. In the SURPASS clinical trial program for T2D, tirzepatide demonstrated greater improvements in glycemic control, body weight reduction and other cardiometabolic risk factors versus placebo, subcutaneous semaglutide 1 mg, insulin degludec, and insulin glargine. This post hoc analysis assessed the effect of tirzepatide use on the prevalence of patients meeting the criteria for metabolic syndrome across SURPASS 1-5.MethodsMetabolic syndrome was defined as having ≥ 3 of 5 criteria according to the US National Cholesterol Education Program: Adult Treatment Panel III. Analyses were based on on-treatment data at the primary endpoint from patients adherent to treatment (taking ≥ 75% study drug). A logistic regression model with metabolic syndrome status as the response variable, metabolic syndrome status at the baseline visit as an adjustment, and randomized treatment as fixed explanatory effect was used. The effect of tirzepatide use on the prevalence of patients meeting the criteria for metabolic syndrome by categorical weight loss, background medication and gender were assessed.ResultsIn SURPASS, the prevalence of patients meeting the criteria for metabolic syndrome at baseline was 67-88% across treatment groups with reductions at the primary endpoint to 38-64% with tirzepatide versus 64-82% with comparators. Reductions in the prevalence of patients meeting the criteria for metabolic syndrome was significantly greater with all tirzepatide doses versus placebo, semaglutide 1 mg, insulin glargine, and insulin degludec (p < 0.001). Individual components of metabolic syndrome were also reduced to a greater extent with tirzepatide vs comparators. Greater reductions in body weight were associated with greater reductions in the prevalence of patients meeting the criteria for metabolic syndrome and its individual components. Background SGLT2i or sulfonylurea use or gender did not impact the change in prevalence of patients meeting the criteria for metabolic syndrome.ConclusionsIn this post hoc analysis, tirzepatide at all doses studied was associated with a greater reduction in the prevalence of patients meeting the criteria for metabolic syndrome compared to placebo, semaglutide 1 mg, insulin degludec, and insulin glargine. Although more evidence is needed, these data would support greater potential improvement in cardiovascular risk factor profile with tirzepatide treatment in people across the continuum of T2D.
| S-EPMC10859014 | biostudies-literature
Project description:ImportanceThe effects of tirzepatide, a dual glucose-dependent insulinotropic polypeptide and glucagon-like peptide-1 receptor agonist, as an addition to insulin glargine for treatment of type 2 diabetes have not been described.ObjectiveTo assess the efficacy and safety of tirzepatide added to insulin glargine in patients with type 2 diabetes with inadequate glycemic control.Design, setting, and participantsRandomized phase 3 clinical trial conducted at 45 medical research centers and hospitals in 8 countries (enrollment from August 30, 2019, to March 20, 2020; follow-up completed January 13, 2021) in 475 adults with type 2 diabetes and inadequate glycemic control while treated with once-daily insulin glargine with or without metformin.InterventionsPatients were randomized in a 1:1:1:1 ratio to receive once-weekly subcutaneous injections of 5-mg (n = 116), 10-mg (n = 119), or 15-mg (n = 120) tirzepatide or volume-matched placebo (n = 120) over 40 weeks. Tirzepatide was initiated at 2.5 mg/week and escalated by 2.5 mg every 4 weeks until the assigned dose was achieved.Main outcomes and measuresThe primary end point was mean change from baseline in glycated hemoglobin A1c (HbA1c) at week 40. The 5 key secondary end points included mean change in body weight and percentage of patients achieving prespecified HbA1c levels.ResultsAmong 475 randomized participants (211 [44%] women; mean [SD] age, 60.6 [9.9] years; mean [SD] HbA1c, 8.31% [0.85%]), 451 (94.9%) completed the trial. Treatment was prematurely discontinued by 10% of participants in the 5-mg tirzepatide group, 12% in the 10-mg tirzepatide group, 18% in the 15-mg tirzepatide group, and 3% in the placebo group. At week 40, mean HbA1c change from baseline was -2.40% with 10-mg tirzepatide and -2.34% with 15-mg tirzepatide vs -0.86% with placebo (10 mg: difference vs placebo, -1.53% [97.5% CI, -1.80% to -1.27%]; 15 mg: difference vs placebo, -1.47% [97.5% CI, -1.75% to -1.20%]; P < .001 for both). Mean HbA1c change from baseline was -2.11% with 5-mg tirzepatide (difference vs placebo, -1.24% [95% CI, -1.48% to -1.01%]; P < .001]). Mean body weight change from baseline was -5.4 kg with 5-mg tirzepatide, -7.5 kg with 10-mg tirzepatide, -8.8 kg with 15-mg tirzepatide and 1.6 kg with placebo (5 mg: difference, -7.1 kg [95% CI, -8.7 to -5.4]; 10 mg: difference, -9.1 kg [95% CI, -10.7 to -7.5]; 15 mg: difference, -10.5 kg [95% CI, -12.1 to -8.8]; P < .001 for all). Higher percentages of patients treated with tirzepatide vs those treated with placebo had HbA1c less than 7% (85%-90% vs 34%; P < .001 for all). The most common treatment-emergent adverse events in the tirzepatide groups vs placebo group were diarrhea (12%-21% vs 10%) and nausea (13%-18% vs 3%).Conclusions and relevanceAmong patients with type 2 diabetes and inadequate glycemic control despite treatment with insulin glargine, the addition of subcutaneous tirzepatide, compared with placebo, to titrated insulin glargine resulted in statistically significant improvements in glycemic control after 40 weeks.Trial registrationClinicalTrials.gov Identifier: NCT04039503.
| S-EPMC8826179 | biostudies-literature
Project description:IntroductionThe objective of this work was to assess the association of tirzepatide with changes in insulin sensitivity and beta-cell function in Japanese patients with type 2 diabetes (T2D).MethodsThis was a prespecified analysis of SURPASS J-mono, a multicenter, randomized, double-blind, active-controlled phase 3 study in Japanese participants with T2D. Participants were randomly assigned to receive tirzepatide 5, 10, 15 mg, or dulaglutide 0.75 mg once weekly for 52 weeks. Changes from baseline in homeostatic model assessment (HOMA2) parameters were assessed by a mixed model for repeated measures. Post hoc subgroup analyses were conducted based on high and low baseline C-peptide categories (cutoff: median 1.86 µg/l).ResultsThis analysis included 636 participants (tirzepatide 5 mg: n = 159; 10 mg: n = 158; 15 mg: n = 160; dulaglutide 0.75 mg: n = 159). Fasting insulin and C-peptide levels were significantly reduced from baseline at week 52 at all three tirzepatide doses compared with dulaglutide 0.75 mg (estimated treatment differences [ETDs] for tirzepatide 5, 10, and 15 mg, respectively: insulin, - 22.6%, - 29.8%, and - 31.0%; C-peptide, - 14.2%, - 21.5%, and - 20.7%; p < 0.001 all comparisons). Insulin sensitivity and beta-cell function indices significantly increased in all tirzepatide groups compared with the dulaglutide 0.75-mg group (ETDs for tirzepatide 5, 10, and 15 mg, respectively: HOMA2-%S [insulin], 31.8%, 43.2%, and 49.9%; HOMA2-%S [C-peptide], 24.8%, 33.9%, and 38.2%; HOMA2-%B [insulin], 27.3%, 34.9%, and 40.6%; HOMA2-%B [C-peptide], 31.6%, 40.1%, and 46.7%; p < 0.001 all comparisons). Regardless of baseline C-peptide level, the tirzepatide groups showed significant improvement in glycated hemoglobin at week 52 compared with the dulaglutide group (C-peptide < 1.86 µg/l: - 2.31% to - 2.75% vs. - 1.45%; ≥ 1.86 µg/l: - 2.43% to - 2.89% vs. - 1.12%; p < 0.001).ConclusionsIn these prespecified and post hoc analyses, tirzepatide was associated with improved insulin sensitivity and insulin secretion in Japanese participants with T2D, which may result in reduced fasting insulin levels.ClinicaltrialsGOV: NCT03861052.
| S-EPMC11926299 | biostudies-literature
Project description:ImportanceTirzepatide is a glucose-dependent insulinotropic polypeptide and glucagon-like peptide-1 receptor agonist used for the treatment of type 2 diabetes. Efficacy and safety of adding tirzepatide vs prandial insulin to treatment in patients with inadequate glycemic control with basal insulin have not been described.ObjectiveTo assess the efficacy and safety of tirzepatide vs insulin lispro as an adjunctive therapy to insulin glargine.Design, setting, and participantsThis open-label, phase 3b clinical trial was conducted at 135 sites in 15 countries (participants enrolled from October 19, 2020, to November 1, 2022) in 1428 adults with type 2 diabetes taking basal insulin.InterventionsParticipants were randomized (in a 1:1:1:3 ratio) to receive once-weekly subcutaneous injections of tirzepatide (5 mg [n = 243], 10 mg [n = 238], or 15 mg [n = 236]) or prandial thrice-daily insulin lispro (n = 708).Main outcomes and measuresOutcomes included noninferiority of tirzepatide (pooled cohort) vs insulin lispro, both in addition to insulin glargine, in HbA1c change from baseline at week 52 (noninferiority margin, 0.3%). Key secondary end points included change in body weight and percentage of participants achieving hemoglobin A1c (HbA1c) target of less than 7.0%.ResultsAmong 1428 randomized participants (824 [57.7%] women; mean [SD] age, 58.8 [9.7] years; mean [SD] HbA1c, 8.8% [1.0%]), 1304 (91.3%) completed the trial. At week 52, estimated mean change from baseline in HbA1c with tirzepatide (pooled cohort) was -2.1% vs -1.1% with insulin lispro, resulting in mean HbA1c levels of 6.7% vs 7.7% (estimated treatment difference, -0.98% [95% CI, -1.17% to -0.79%]; P < .001); results met noninferiority criteria and statistical superiority was achieved. Estimated mean change from baseline in body weight was -9.0 kg with tirzepatide and 3.2 kg with insulin lispro (estimated treatment difference, -12.2 kg [95% CI, -13.4 to -10.9]). The percentage of participants reaching HbA1c less than 7.0% was 68% (483 of 716) with tirzepatide and 36% (256 of 708) with insulin lispro (odds ratio, 4.2 [95% CI, 3.2-5.5]). The most common adverse events with tirzepatide were mild to moderate gastrointestinal symptoms (nausea: 14%-26%; diarrhea: 11%-15%; vomiting: 5%-13%). Hypoglycemia event rates (blood glucose level <54 mg/dL or severe hypoglycemia) were 0.4 events per patient-year with tirzepatide (pooled) and 4.4 events per patient-year with insulin lispro.Conclusions and relevanceIn people with inadequately controlled type 2 diabetes treated with basal insulin, weekly tirzepatide compared with prandial insulin as an additional treatment with insulin glargine demonstrated reductions in HbA1c and body weight with less hypoglycemia.Trial registrationClinicalTrials.gov Identifier: NCT04537923.
| S-EPMC10548360 | biostudies-literature
Project description:BackgroundAdding the measurement of cystatin C to that of serum creatinine to determine the estimated glomerular filtration rate (eGFR) improves accuracy, but the effect on detection, staging, and risk classification of chronic kidney disease across diverse populations has not been determined.MethodsWe performed a meta-analysis of 11 general-population studies (with 90,750 participants) and 5 studies of cohorts with chronic kidney disease (2960 participants) for whom standardized measurements of serum creatinine and cystatin C were available. We compared the association of the eGFR, as calculated by the measurement of creatinine or cystatin C alone or in combination with creatinine, with the rates of death (13,202 deaths in 15 cohorts), death from cardiovascular causes (3471 in 12 cohorts), and end-stage renal disease (1654 cases in 7 cohorts) and assessed improvement in reclassification with the use of cystatin C.ResultsIn the general-population cohorts, the prevalence of an eGFR of less than 60 ml per minute per 1.73 m(2) of body-surface area was higher with the cystatin C-based eGFR than with the creatinine-based eGFR (13.7% vs. 9.7%). Across all eGFR categories, the reclassification of the eGFR to a higher value with the measurement of cystatin C, as compared with creatinine, was associated with a reduced risk of all three study outcomes, and reclassification to a lower eGFR was associated with an increased risk. The net reclassification improvement with the measurement of cystatin C, as compared with creatinine, was 0.23 (95% confidence interval [CI], 0.18 to 0.28) for death and 0.10 (95% CI, 0.00 to 0.21) for end-stage renal disease. Results were generally similar for the five cohorts with chronic kidney disease and when both creatinine and cystatin C were used to calculate the eGFR.ConclusionsThe use of cystatin C alone or in combination with creatinine strengthens the association between the eGFR and the risks of death and end-stage renal disease across diverse populations. (Funded by the National Kidney Foundation and others.).
| S-EPMC3993094 | biostudies-literature