9 research outputs found

    Development and Validation of a New Hierarchical Composite End Point for Clinical Trials of Kidney Disease Progression

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    BACKGROUND: The established composite kidney end point in clinical trials combines clinical events with sustained large changes in GFR. However, the statistical method does not weigh the relative clinical importance of the end point components. A HCE accounts for the clinical importance of the end point components and enables combining dichotomous outcomes with continuous measures. METHODS: We developed and validated a new HCE for kidney disease progression, performing post hoc analyses of seven major Phase 3 placebo-controlled trials that assessed the effects of canagliflozin, dapagliflozin, finerenone, atrasentan, losartan, irbesartan, and aliskiren in patients with CKD. We calculated the win odds (WOs) for treatment effects on a kidney HCE, defined as a hierarchical composite of all-cause mortality; kidney failure; sustained 57%, 50%, and 40% GFR declines from baseline; and GFR slope. The WO describes the odds of a more favorable outcome for receiving the active compared with the control. We compared the WO with the hazard ratio (HR) of the primary kidney outcome of the original trials. RESULTS: In all trials, treatment effects calculated with the WO reflected a similar direction and magnitude of the treatment effect compared with the HR. Clinical trials incorporating the HCE would achieve increased statistical power compared with the established composite end point at equivalent sample sizes. CONCLUSIONS: In seven major kidney clinical trials, the WO and HR provided similar direction of treatment effect estimates with smaller HRs associated with larger WOs. The prioritization of clinical outcomes and inclusion of broader composite end points makes the HCE an attractive alternative to the established kidney end point

    The Lantern, 2016-2017

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    • Our Lady of Perpetual Virginity • Essential Terms for the Audience • Stories Untold • Jesus Camp • The Second Avenue Schmear • Driving to the Beach • Thanks, Alice • Decay • Peanut Butter Rhapsody • Transactions • Traffic • Sissy • Melting Wings • Ocean • Small Town Summer • Third Story • Family Trees • Mixed, Just Like Me • Sour Graves • How Sweet the Sound • Goodnight, Halfmoon • I\u27m Going to Ask Him How • Music • Pizza • Manhoodlike • Meditations From a Bunk Bed in a Home on Mount Pocono • Soft • Twilight\u27s Palette • The Oracle • Cynicism • River Ganges • Pinata Body and Hearing the Gun Shot • Song With No Music • Of Mornings Considering Womanhood • 10 Hours in Philadelphia • To Cut • Sachrang • Bavarian Wave Swinger • Irish Rain • Remembrances, Well • The Roses • Buttermilk • The Universe Will Always Listen if You Ask Her, Which is Why I Like Her More Than God • A Lukewarm Light • A Thought of Death • Hobson • Decaying Light • Window Women • Dead Bee • The Imagery • For Rent • Mona Lisa MMXVIhttps://digitalcommons.ursinus.edu/lantern/1185/thumbnail.jp

    Validity and Utility of a Hierarchical Composite End Point for Clinical Trials of Kidney Disease Progression:A Review

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    Clinical trials in nephrology often use composite end points comprising clinical events, such as onset of ESKD and initiation of kidney function replacement therapy, along with a sustained large (e.g., 5050%) decrease in GFR. Such events typically occur late in the disease course, resulting in large trials in which most participants do not contribute clinical events. In addition, components of the end point are considered of equal importance; however, their clinical significance varies. For example, kidney function replacement therapy initiation is likely to be clinically more meaningful than GFR decline of 50%. By contrast, hierarchical composite end points (HCEs) combine multiple outcomes and prioritize each patient’s most clinically relevant outcome for inclusion in analysis. In this review, we consider the use of HCEs in clinical trials of CKD progression, emphasizing the potential to combine dichotomous clinical events such as those typically used in CKD progression trials, with the continuous variable of GFR over time, while ranking all components according to clinical significance. We consider maraca plots to visualize overall treatment effects and the contributions of individual components, discuss the application of win odds in kidney HCE trials, and review general design considerations for clinical trials for CKD progression with kidney HCE as an efficacy end point.</p

    Validity and Utility of a Hierarchical Composite End Point for Clinical Trials of Kidney Disease Progression:A Review

    Get PDF
    Clinical trials in nephrology often use composite end points comprising clinical events, such as onset of ESKD and initiation of kidney function replacement therapy, along with a sustained large (e.g., 5050%) decrease in GFR. Such events typically occur late in the disease course, resulting in large trials in which most participants do not contribute clinical events. In addition, components of the end point are considered of equal importance; however, their clinical significance varies. For example, kidney function replacement therapy initiation is likely to be clinically more meaningful than GFR decline of 50%. By contrast, hierarchical composite end points (HCEs) combine multiple outcomes and prioritize each patient’s most clinically relevant outcome for inclusion in analysis. In this review, we consider the use of HCEs in clinical trials of CKD progression, emphasizing the potential to combine dichotomous clinical events such as those typically used in CKD progression trials, with the continuous variable of GFR over time, while ranking all components according to clinical significance. We consider maraca plots to visualize overall treatment effects and the contributions of individual components, discuss the application of win odds in kidney HCE trials, and review general design considerations for clinical trials for CKD progression with kidney HCE as an efficacy end point.</p

    Development and Validation of a New Hierarchical Composite End Point for Clinical Trials of Kidney Disease Progression

    Get PDF
    Background The established composite kidney end point in clinical trials combines clinical events with sustained large changes in GFR. However, the statistical method does not weigh the relative clinical importance of the end point components. A HCE accounts for the clinical importance of the end point components and enables combining dichotomous outcomes with continuous measures. Methods We developed and validated a new HCE for kidney disease progression, performing post hoc analyses of seven major Phase 3 placebo-controlled trials that assessed the effects of canagliflozin, dapagliflozin, finerenone, atrasentan, losartan, irbesartan, and aliskiren in patients with CKD. We calculated the win odds (WOs) for treatment effects on a kidney HCE, defined as a hierarchical composite of all-cause mortality; kidney failure; sustained 57%, 50%, and 40% GFR declines from baseline; and GFR slope. The WO describes the odds of a more favorable outcome for receiving the active compared with the control. We compared the WO with the hazard ratio (HR) of the primary kidney outcome of the original trials. Results In all trials, treatment effects calculated with the WO reflected a similar direction and magnitude of the treatment effect compared with the HR. Clinical trials incorporating the HCE would achieve increased statistical power compared with the established composite end point at equivalent sample sizes. Conclusions In seven major kidney clinical trials, the WO and HR provided similar direction of treatment effect estimates with smaller HRs associated with larger WOs. The prioritization of clinical outcomes and inclusion of broader composite end points makes the HCE an attractive alternative to the established kidney end point.</p
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