Evidence map›Paper›PMID 35491523›Full record

SynthesisDiabetes, obesity & metabolism2022

Non-inferiority and clinical superiority of glucagon-like peptide-1 receptor agonists and sodium-glucose co-transporter-2 inhibitors: Systematic analysis of cardiorenal outcome trials in type 2 diabetes.

Francesco Zaccardi, David E Kloecker, Kamlesh Khunti, Melanie J Davies

Abstract readSystematic Review
In one paragraph

Synthesis in Diabetes, obesity & metabolism, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Francesco ZaccardiLeicester Real World Evidence Unit, University of Leicester, Leicester General Hospital, Leicester, UK.ORCID 0000-0002-2636-6487
David E KloeckerLeicester Real World Evidence Unit, University of Leicester, Leicester General Hospital, Leicester, UK.ORCID 0000-0002-8910-2091
Kamlesh KhuntiLeicester Real World Evidence Unit, University of Leicester, Leicester General Hospital, Leicester, UK.ORCID 0000-0003-2343-7099
Melanie J DaviesDiabetes Research Centre, University of Leicester, Leicester General Hospital, Leicester, UK.ORCID 0000-0002-9987-9371

Funding

Department of Health
6 · The paper itself

Abstract

aimsMost trials leading to the approval of glucagon-like peptide receptor agonists (GLP-1RAs) and sodium-glucose co-transporter-2 inhibitors (SGLT2is) were primarily designed to confirm their non-inferiority to placebo (commonly using an upper 95% confidence limit threshold of 1.3) and, if confirmed, superiority (threshold 1): this asymmetry of margins (1 vs. 1.3) favours the active intervention. We aimed to quantify the probability of clinical superiority of the active treatment by applying the same threshold used to claim non-inferiority. MATERIALS AND

methodsWe searched PubMed and Cochrane CENTRAL for cardiorenal outcome trials in subjects with type 2 diabetes published before 5 December 2021, to reconstruct from Kaplan-Meier plots individual-level data for the primary outcome or all-cause mortality. We calculated Bayesian posterior densities to obtain the probability for a treatment effect (hazard ratio) <0.769, which is symmetric to the 1.3 threshold (i.e. its reciprocal 1/1.3), emulating a scenario where the active treatment is placebo and placebo is the active treatment.

resultsWe extracted data from 27 Kaplan-Meier plots (18 for the primary outcome, nine for mortality). Probabilities of clinical superiority to placebo varied significantly: for GLP-1RAs, from a minimum of 0% to a maximum of 69% for the primary outcome and from 0% to 8% for mortality; corresponding estimates for SGLT2is were 0% to 96% and 0% to 93%. Probabilities were on average greater for SGLT2is, particularly in trials investigating kidney or heart failure outcomes.

conclusionsThe probability of clinical superiority to placebo varies widely across trials previously reported as showing superiority of GLP-1RAs or SGLT2is compared with placebo. These results showed within- and between-class differences, highlight the drawbacks of a binary interpretation of the results, particularly in the context of the current designs of non-inferiority trials, and have implications for decision makers and future clinical recommendations.

Indexed as

Cardiovascular DiseasesDiabetes Mellitus, Type 2Sodium-Glucose Transporter 2 InhibitorsSymportersBayes TheoremGlucagon-Like Peptide-1 Receptor AgonistsGlucoseHumansHypoglycemic AgentsSodiumGlucagon-Like Peptide-1 Receptor AgonistsGlucoseHypoglycemic AgentsSodiumSodium-Glucose Transporter 2 InhibitorsSymporterscardiovascular diseasediabetic nephropathyGLP-1 analoguerandomized trialSGLT2 inhibitor

Identifiers

PMID35491523
PMCPMC9543971

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.