Several biomarkers associated with myocardial stress and necrosis
The recent CANVAS trial revealed that, among individuals with type 2 diabetes with and without CKD, several biomarkers were associated with myocardial stress and necrosis, and renal tubular injury, predicting the progression of CKD with albuminuria, and the risk for heart failure events.
Taking inspiration from those findings, the current researchers studied a panel of similar cardiac and renal biomarkers among participants from the CREDENCE trial, for which 4,401 patients with type 2 diabetes and CKD at high risk of progression were randomly assigned to canagliflozin or placebo.
The current analysis involved 2,627 participants who had baseline plasma samples available for analysis of four circulating biomarkers: N-terminal pro-B-type natriuretic peptide (NT-proBNP), high-sensitivity cardiac troponin T (hs-cTnT), growth differentiation factor-15 (GDF-15), and IGFBP7.
Among those, 2,385 participants also had year 1 plasma samples available for analysis, while year 3 plasma samples were available for 895 individuals.
The results showed that, in general, median baseline concentrations of each biomarker in both treatment groups were elevated compared with healthy reference populations.
Baseline log-transformed concentrations of each biomarker were also strongly predictive of cardiac and renal outcomes, including heart failure and progression of CKD.
For example, each unit increase in baseline NT-proBNP concentrations was associated with a hazard ratio of 1.35 for the primary composite endpoint of end-stage kidney disease, doubling of serum creatinine levels, renal death, or cardiovascular disease (P < .001).
For each unit increase in hs-cTnT levels, the hazard ratio for the primary composite was 1.73 (P < .001), for GDF-15 it was 1.84 (P < .0001), and for IGFBP7 the hazard ratio was 3.14 (P < .001).
Combining the four biomarkers into a single multimarker panel revealed that, compared with individuals with a low-risk score, those with a high-risk score had a hazard ratio for the primary outcome of 4.01, whereas those with a moderate risk score had a hazard ratio of 2.39 (P < .001 for both).
For the individual outcome of heart failure hospitalization, the effect was even greater. A high-risk score was associated with a hazard ratio vs. a low-risk score of 6.04 (P < .001), whereas patients with a moderate risk score had a hazard ratio of 2.45 (P = .04).
The researchers also reported that, between baseline and year 1, concentrations of all four biomarkers rose from 6% to 29% in the placebo group, but from 3% to just 10% in those treated with canagliflozin.
“It was reassuring to discover that canagliflozin helped reduce risks the most in people with the highest chances for complications,” said Dr. Januzzi.
The CREDENCE trial and the current analysis were funded by Janssen Research & Development LLC. NT-proBNP, hs-cTnT, GDF-15, and IGFBP7 reagents were provided by Roche Diagnostics. Dr. Januzzi is funded in part by the Hutter Family Professorship. Dr. Januzzi declared relationships with Imbria Pharmaceuticals, Jana Care, Abbott, Applied Therapeutics, HeartFlow, Innolife, Roche Diagnostics, Beckman, Boehringer Ingelheim, Bristol-Myers Squibb, Janssen, Merck, Novartis, Pfizer, Siemens, Abbott, AbbVie, CVRx, Intercept, and Takeda.
A version of this article first appeared on Medscape.com.