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The Trial to Assess Chelation Therapy 2 (TACT2): Rationale and Design.
The Trial to Assess Chelation Therapy 2 (TACT2): Rationale and Design. American heart journal Lamas, G. A., Anstrom, K. J., Navas-Acien, A., Boineau, R., Kim, H., Rosenberg, Y., Stylianou, M., Jones, T. L., Joubert, B. R., Santella, R. M., Escolar, E., Aude, Y. W., Fonseca, V., Elliott, T., Lewis, E. F., Farkouh, M. E., Nathan, D. M., Mon, A. C., Gosnell, L., Newman, J. D., Mark, D. B., TACT2 Investigators 2022Abstract
The Trial to Assess Chelation Therapy 2 (TACT2) is an NIH-sponsored, randomized, 2x2 factorial, double masked, placebo-controlled, multicenter clinical trial testing 40 weekly infusions of a multi-component edetate disodium (disodium ethylenediamine tetra-acetic acid, or Na2EDTA)-based chelation solution and twice daily oral, high-dose multivitamin and mineral supplements in patients with diabetes and a prior myocardial infarction (MI). TACT2 completed enrollment of 1000 subjects in December 2020, and infusions in December 2021. Subjects are being followed for 2.5 to 5 years. The primary endpoint is a composite of the time to first occurrence of all-cause mortality, MI, stroke, coronary revascularization, or hospitalization for unstable angina. The trial is designed to have >85% power to detect a 30% relative reduction in the primary endpoint for each active treatment versus placebo comparison. TACT2 also includes a Trace Metals and Biorepository Core Lab, which will test the novel hypothesis that the prognostic benefits of chelation, if present, are due to removal of lead and cadmium from patients. Most of the design features of TACT2 were chosen to replicate selected features of the first TACT trial, which demonstrated a statistically significant reduction in cardiovascular outcomes in the EDTA chelation arm compared with placebo among patients with a prior MI, with the largest effect in patients with diabetes. Results from TACT2, if concordant with TACT, will provide definitive evidence of the benefit of edetate disodium-based chelation on cardiovascular outcomes, as well as the possible clinical importance of longitudinal changes in toxic metal levels of participants.
View details for DOI 10.1016/j.ahj.2022.05.013
View details for PubMedID 35598636