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Sodium-Glucose Co-Transporter-2 Inhibitors and Cardiac Outcomes Among Patients Treated With Anthracyclines
Carlos A Gongora1, Zsofia D Drobni2, Thiago Quinaglia Araujo Costa Silva3
1Cardiovascular Imaging Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA; Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA.
Background:
Sodium-glucose co-transporter-2 (SGLT2) inhibitors improve outcomes among patients with established heart failure. Despite supportive basic science studies, there are no data on the value of SGLT2 inhibitors among patients treated with anthracyclines.
Objectives:
This study sought to test the cardiac efficacy and overall safety of SGLT2 inhibitors in patients treated with anthracyclines.
Methods:
This study identified 3,033 patients with diabetes mellitus (DM) and cancer who were treated with anthracyclines. Cases were patients with cancer and DM who were on SGLT2 inhibitor therapy during anthracycline treatment (n = 32). Control participants (n = 96) were patients with cancer and DM who were also treated with anthracyclines, but were not on an SGLT2 inhibitor. The primary cardiac outcome was a composite of cardiac events (heart failure incidence, heart failure admissions, new cardiomyopathy [>10% decline in ejection fraction to <53%], and clinically significant arrhythmias). The primary safety outcome was overall mortality.
Results:
Age, sex, ethnicity, cancer type, cancer stage, and other cardiac risk factors were similar between groups. There were 20 cardiac events over a median follow-up period of 1.5 years. The cardiac event incidence was lower among case patients in comparison to control participants (3% vs 20%; P = 0.025). Case patients also experienced lower overall mortality when compared with control participants (9% vs 43%; P < 0.001) and a lower composite of sepsis and neutropenic fever (16% vs 40%; P = 0.013).
Conclusions:
SGLT2 inhibitors were associated with lower rate of cardiac events among patients with cancer and DM who were treated with anthracyclines. Additionally, SGLT2 inhibitors appeared to be safe. These data support the conducting of a randomized clinical trial testing SGLT2 inhibitors in patients at high cardiac risk treated with anthracyclines.
Insights
Sodium-glucose co-transporter-2 (SGLT2) inhibitors reduced cardiac events and mortality in cancer patients receiving anthracyclines. This study suggests SGLT2 inhibitors are safe and effective in this high-risk population.
Area of Science:
- Cardiology
- Oncology
- Pharmacology
Background:
- Sodium-glucose co-transporter-2 (SGLT2) inhibitors are known to improve heart failure outcomes.
- Limited data exist on SGLT2 inhibitor efficacy in patients treated with anthracyclines.
Purpose of the Study:
- To evaluate the cardiac efficacy of SGLT2 inhibitors in patients receiving anthracyclines.
- To assess the overall safety of SGLT2 inhibitors in this patient cohort.
Main Methods:
- Retrospective study of 3,033 patients with diabetes mellitus and cancer treated with anthracyclines.
- Case group (n=32) received SGLT2 inhibitors during anthracycline treatment; control group (n=96) did not.
- Primary outcomes: composite cardiac events and overall mortality.
Main Results:
- SGLT2 inhibitor use was associated with a significantly lower incidence of cardiac events (3% vs. 20%, P=0.025).
- Overall mortality was substantially lower in the SGLT2 inhibitor group (9% vs. 43%, P<0.001).
- SGLT2 inhibitors also reduced sepsis and neutropenic fever composite outcomes (16% vs. 40%, P=0.013).
Conclusions:
- SGLT2 inhibitors demonstrate significant cardiac benefits in patients with cancer and diabetes mellitus undergoing anthracycline therapy.
- The findings support the use of SGLT2 inhibitors as a potentially safe and effective treatment in this high-risk population.
- A randomized clinical trial is warranted to confirm these promising results.
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Secondary Active Transport
Glucose Transporters
Facilitated diffusion-glucose transporters (GLUTs) are encoded by the solute-linked carrier (SLC) family 2, subfamily A gene family, or SLC2A. The 14 GLUT protein members are distributed into three classes:

