Sodium Glucose Co-transporter (SGLT) Inhibitors in Nonobstructive Hypertrophic Cardiomyopathy

The goal of this clinical trial is to learn if sotagliflozin, a dual SGLT1 and SGLT2 inhibitor, works to treat symptomatic, nonobstructive hypertrophic cardiomyopathy (noHCM) in adult patients. It will also learn about the safety of sotagliflozin in this patient population. The main questions it aims to answer are: 1. Will sotagliflozin be well tolerated in patients with nonobstructive HCM? 2. Will sotaglifozin improve exercise capacity, diastolic dysfunction and/or physical functioning in patients with nonobstructive HCM? 3. Will sotagliflozin improve circulating markers of cardiac metabolism in patients with nonobstructive HCM? Researchers will compare sotagliflozin to a placebo (a look-alike substance that contains no drug) to see if sotagliflozin is effective at treating hypertrophic cardiomyopathy (HCM). Participants will: Take sotagliflozin or a placebo every day for 12 weeks. They will then cross-over (or switch) to taking placebo or sotagliflozin (whichever one they did not take initially) for an additional 12 weeks. Visit the clinic once every 4-12 weeks for checkups, surveys, and tests including a stress test and echocardiogram.