Eligibility varies among the 4 sodium-glucose cotransporter-2 inhibitor cardiovascular outcomes trials: implications for the general type 2 diabetes US population

Eric T Wittbrodt, James M Eudicone, Kelly F Bell, Devin M Enhoffer, Keith Latham, Jennifer B Green
American Journal of Managed Care 2018, 24 (8 Suppl): S138-S145

OBJECTIVES: Guidance to industry from the FDA requires studies to evaluate the cardiovascular safety of novel type 2 diabetes (T2D) medications. Although the objectives of such cardiovascular outcomes trials (CVOTs) are similar, differences in features such as enrollment criteria present a challenge when trying to assess the applicability of these studies to real-world T2D populations. This study evaluated the proportions of US adults with T2D who met the eligibility criteria for each of the 4 sodium-glucose cotransporter-2 (SGLT2) inhibitor CVOTs.

STUDY DESIGN: A cross-sectional retrospective study was conducted using data from the National Health and Nutrition Examination Survey (NHANES) and published patient eligibility criteria for completed or ongoing SGLT2 inhibitor CVOTs.

METHODS: Data on T2D diagnosis and other relevant clinical and demographic characteristics were extracted from the NHANES (2009-2010 and 2011-2012). Weighted analysis of these data was used to estimate the percentage of US adults with T2D who met the eligibility criteria for the CANVAS program (CANagliflozin cardioVascular Assessment Study) (canagliflozin; NCT01032629, NCT01989754), and the DECLARE-TIMI 58 (dapagliflozin; NCT01730534), EMPA-REG OUTCOME (empagliflozin; NCT01131676), and VERTIS-CV (ertugliflozin; NCT01986881) trials.

RESULTS: The weighted analysis identified a population of 23,941,512 US adults from data on key inclusion criteria and information indicating a diagnosis of T2D. Of these, 4.1% met the criteria for EMPA-REG OUTCOME, 4.8% for VERTIS-CV, 8.8% for the CANVAS program, and 39.8% for the DECLARE-TIMI 58 trial.

CONCLUSIONS: There were considerable differences in the proportions of US adults with T2D who met the eligibility criteria for these studies.The DECLARE-TIMI 58 trial criteria were the most generalizable to the US T2D population.

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