Trial reportJournal of the American Society of Nephrology : JASN2020

Different eGFR Decline Thresholds and Renal Effects of Canagliflozin: Data from the CANVAS Program.

Megumi Oshima, Bruce Neal, Tadashi Toyama, Toshiaki Ohkuma, Qiang Li, Dick de Zeeuw, Hiddo J L Heerspink, Kenneth W Mahaffey, Gregory Fulcher, William Canovatchel and 2 more

2 registry-linked trialsOpen access · greenAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Journal of the American Society of Nephrology : JASN, 2020. The graph read 3 numbers from its abstract, feeding 1 cell of the map, but it casts no vote: it is a later paper about NCT01032629, whose primary report (PMID 28605608) speaks for the trial. It reports registered trial NCT01032629. Cited by 10 papers, 3 of them syntheses that pooled it.

3numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 3 pooled it
2.3field-weighted citation impact, top 11% of its field
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.

Read, but not usablea number the graph found but could not read as for or against

Kidney outcomescomparator not stated · t2d, ckdfeeds one cell of the map
RR 0.610.45 to 0.83
Compared with a 57% eGFR reduction (risk ratio [RR], 0.51; 95% confidence interval [95% CI], 0.34 to 0.77), the effect sizes were progressively attenuated when using 50% (RR, 0.61; 95% CI, 0.45 to 0.83), 40% (RR, 0.70; 95% CI, 0.57 to 0.86), or 30% (RR, 0.81; 95% CI, 0.71 to 0.93) eGFR reductions.
Kidney outcomescomparator not stated · t2d, ckdfeeds one cell of the map
RR 0.700.57 to 0.86
Compared with a 57% eGFR reduction (risk ratio [RR], 0.51; 95% confidence interval [95% CI], 0.34 to 0.77), the effect sizes were progressively attenuated when using 50% (RR, 0.61; 95% CI, 0.45 to 0.83), 40% (RR, 0.70; 95% CI, 0.57 to 0.86), or 30% (RR, 0.81; 95% CI, 0.71 to 0.93) eGFR reductions.
Kidney outcomescomparator not stated · t2d, ckdfeeds one cell of the map
RR 0.810.71 to 0.93
Compared with a 57% eGFR reduction (risk ratio [RR], 0.51; 95% confidence interval [95% CI], 0.34 to 0.77), the effect sizes were progressively attenuated when using 50% (RR, 0.61; 95% CI, 0.45 to 0.83), 40% (RR, 0.70; 95% CI, 0.57 to 0.86), or 30% (RR, 0.81; 95% CI, 0.71 to 0.93) eGFR reductions.

clause the extractor read what became the number

2 · Its place on the map

Where it lands on the map

Rows are treatments, columns are outcomes. The coloured squares are the cells this paper feeds, coloured by the vote it casts there. Click one to jump to what this paper adds to it.

supports the treatmentfavours the comparatorno clear differenceread, but no usable result
3 · What it changes

What it adds to each cell

For every cell the paper feeds: the belief in the claim with and without this paper, and this paper's estimate drawn against every other readable study in the cell. The ringed dot is this paper.

SGLT2 inhibitors×kidney outcomes

No readable resultOpen on the map →What to test next →

13 readable studies in this cell: 10 favour the treatment, 1 find no difference, 2 favour the comparator.

Belief with this paper
0.89established · 8 families support, 1 contradict · against placebo
Without itNot a counted family in this claim, so removing it changes nothing.
← favours the treatmentfavours the comparator →
1 · no effect
This paper’s trial, registry resultNCT01989754 · 5,813 enrolled · 2014
HR 0.640.57 to 0.73
This paper’s trial, registry resultNCT01032629 · 4,330 enrolled · 2009
OR 0.800.67 to 0.97
NCT02864914333,580 enrolled · 2016
IRR 0.690.45 to 1.05
NCT0546531762,197 enrolled · 2022
HR 0.750.65 to 0.86
NCT0173053417,190 enrolled · 2013
HR 0.760.67 to 0.87
NCT030579515,988 enrolled · 2017
Treatment by time interaction 1.360.86 to 1.86
NCT020657914,401 enrolled · 2014
HR 0.700.59 to 0.82
NCT030579773,730 enrolled · 2017
Treatment by time interaction 1.730.67 to 2.80
4 · 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.

NCT01032629 phase3completed

A Randomized, Multicenter, Double-Blind, Parallel, Placebo-Controlled Study of the Effects of JNJ-28431754 on Cardiovascular Outcomes in Adult Subjects With Type 2 Diabetes Mellitus

Ran2009Enrolled4,330Registered outcomes13Posted comparisons33ConditionsCardiovascular Diseases, Diabetes Mellitus, Type 2, Risk FactorsArmsCanagliflozin (JNJ-28431754) 100 mg, Canagliflozin (JNJ-28431754) 300 mg, Placebo
Open the trial in the graph
NCT01989754 phase4completed

A Randomized, Multicenter, Double-Blind, Parallel, Placebo-Controlled Study of the Effects of Canagliflozin on Renal Endpoints in Adult Subjects With Type 2 Diabetes Mellitus

Ran2014Enrolled5,813Registered outcomes3Posted comparisons3ConditionsAlbuminuria, Diabetes Mellitus, Type 2ArmsCanagliflozin, 100 mg, Canagliflozin, 300 mg, Placebo
Open the trial in the graph
5 · Its place in the literature

Who cites it

10 citing papers in PubMed, 3 syntheses or guidelines pooled it, 21 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Ertugliflozin and Slope of Chronic eGFR: Prespecified Analyses from the Randomized VERTIS CV Trial.Clinical journal of the American Society of Nephrology : CJASN · 2021
    Trial
  5. Article
  6. Article
  7. Article
  8. Review
  9. Design, recruitment, and baseline characteristics of the EMPA-KIDNEY trial.Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association · 2022
    Article
  10. Article
6 · The record

Corrections and comments

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

7 · Who and what money

Authors and funding

12 authors at 8 institutions in 5 countries.

Megumi OshimaDepartment of Renal and Metabolic, The George Institute for Global Health, University of New South Wales Sydney, Sydney, New South Wales, Australia.ORCID 0000-0002-4108-5229
Bruce NealDepartment of Renal and Metabolic, The George Institute for Global Health, University of New South Wales Sydney, Sydney, New South Wales, Australia.
Tadashi ToyamaDepartment of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan.
Toshiaki OhkumaDepartment of Renal and Metabolic, The George Institute for Global Health, University of New South Wales Sydney, Sydney, New South Wales, Australia.
Qiang LiDepartment of Renal and Metabolic, The George Institute for Global Health, University of New South Wales Sydney, Sydney, New South Wales, Australia.
Dick de ZeeuwDepartment of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
Hiddo J L HeerspinkDepartment of Renal and Metabolic, The George Institute for Global Health, University of New South Wales Sydney, Sydney, New South Wales, Australia.
Kenneth W MahaffeyStanford University School of Medicine, Stanford, California.
Gregory FulcherRoyal North Shore Hospital, Sydney, New South Wales, Australia.
William CanovatchelJanssen Global Services, LLC, Raritan, New Jersey.
David R MatthewsHarris Manchester College, University of Oxford, Oxford, United Kingdom.
Vlado PerkovicDepartment of Renal and Metabolic, The George Institute for Global Health, University of New South Wales Sydney, Sydney, New South Wales, Australia vlado.perkovic@unsw.edu.au.
UNSW Sydney · AUKanazawa University · JPUniversity Medical Center Groningen · NLJanssen (United States) · USRoyal North Shore Hospital · AUStanford University · USThe University of Sydney · AUUniversity of Oxford · GB

Funding

No grant is acknowledged in the PubMed record.

8 · The paper itself

Abstract

The marked sentences are the ones the graph read a number from.

backgroundTraditionally, clinical trials evaluating effects of a new therapy with creatinine-based renal end points use doubling of serum creatinine (equivalent to a 57% eGFR reduction), requiring large sample sizes.

methodsTo assess whether eGFR declines <57% could detect canagliflozin's effects on renal outcomes, we conducted a

resultsAmong the 10,142 participants, 93 (0.9%), 161 (1.6%), 352 (3.5%), and 800 (7.9%) participants recorded renal outcomes on the basis of 57%, 50%, 40%, or 30% eGFR reduction, respectively, during a mean follow-up of 188 weeks. Compared with a 57% eGFR reduction (risk ratio [RR], 0.51; 95% confidence interval [95% CI], 0.34 to 0.77), the effect sizes were progressively attenuated when using 50% (RR, 0.61; 95% CI, 0.45 to 0.83), 40% (RR, 0.70; 95% CI, 0.57 to 0.86), or 30% (RR, 0.81; 95% CI, 0.71 to 0.93) eGFR reductions. In analyses that controlled for the acute hemodynamic fall in eGFR, effect sizes were comparable, regardless of whether a 57%, 50%, 40%, or 30% eGFR reduction was used. Estimated sample sizes for studies on the basis of lesser eGFR reductions were much reduced by controlling for this early hemodynamic effect.

conclusionsDeclines in eGFR <57% may provide robust estimates of canagliflozin's effects on renal outcomes if the analysis controls for the drug's acute hemodynamic effect. CLINICAL TRIAL REGISTRY NAME AND REGISTRATION NUMBER: CANagliflozin cardioVascular Assessment Study (CANVAS), NCT01032629 and CANVAS-R, NCT01989754.

Indexed as

AgedCanagliflozinCohort StudiesDiabetes Mellitus, Type 2Double-Blind MethodFemaleGlomerular Filtration RateHumansKidney Failure, ChronicMaleMiddle AgedSodium-Glucose Transporter 2 InhibitorsSurvival RateCanagliflozinSodium-Glucose Transporter 2 InhibitorscanagliflozineGFR declineSGLT2 inhibitorsType 2 diabetes

Identifiers

PMID32694216
PMCPMC7609006
OpenAlexW3045417598

What OpenQuestion holds

Texttitle and abstract
Read underepoch 390

Registered trials

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.