Sotagliflozin

1 INDICATIONS AND USAGE INPEFA is indicated to reduce the risk of cardiovascular death, hospitalization for heart failure, and urgent heart failure visit in adults with: heart failure or type 2 diabetes mellitus, chronic kidney disease, and other cardiovascular risk factors INPEFA is a sodium-glucose cotransporter 2 (SGLT2) inhibitor indicated to reduce the risk of cardiovascular death, hospitalization for heart failure, and urgent heart failure visit in adults with: heart failure ( 1 ) or type 2 diabetes mellitus, chronic kidney disease, and other cardiovascular risk factors ( 1 )

2 DOSAGE AND ADMINISTRATION Correct volume status before starting INPEFA at 200 mg daily and titrate to 400 mg as tolerated. ( 2.2 ) In patients with decompensated heart failure, begin dosing when patients are hemodynamically stable. ( 2.1 ) Withhold INPEFA at least 3 days, if possible, prior to major surgery or procedures associated with prolonged fasting. ( 2.3 ) 2.1 Prior to Initiation of INPEFA Assess volume status and, if necessary, correct volume depletion prior to initiation of INPEFA [see Warnings and Precautions ( 5.2 ) and Use in Specific Populations ( 8.5 , 8.6 )] . Assess renal function prior to initiation of INPEFA and then as clinically indicated [see Warnings and Precautions ( 5.2 )] . For patients with decompensated heart failure, dosing may begin as soon as the patient is hemodynamically stable, including during hospitalization or urgent outpatient treatment or immediately upon discharge. 2.2 Recommended Dosage The recommended starting dose of INPEFA is 200 mg orally once daily not more than one hour before the first meal of the day. Up-titrate after at least 2 weeks to 400 mg orally once daily as tolerated [see Clinical Studies ( 14 )] . Down-titrate to 200 mg as necessary [see Adverse Reactions ( 6.1 ), Warnings and Precautions ( 5 ) and Use in Specific Populations ( 8.6 )]. Swallow tablets whole. Do not cut, crush, or chew tablets. If a dose of INPEFA is missed by more than 6 hours, take the next dose as prescribed the next day. 2.3 Temporary Interruption for Surgery Withhold INPEFA at least 3 days, if possible, prior to major surgery or procedures associated with prolonged fasting. Resume INPEFA when the patient is clinically stable and has resumed oral intake [see Warnings and Precautions ( 5.1 ) and Clinical Pharmacology ( 12.3 )] .

6 ADVERSE REACTIONS The following important adverse reactions are described elsewhere in the labeling: Diabetic Ketoacidosis in Patients with Type 1 Diabetes Mellitus and Other Ketoacidosis [see Warnings and Precautions ( 5.1 )] Volume Depletion [see Warnings and Precautions ( 5.2 )] Urosepsis and Pyelonephritis [see Warnings and Precautions ( 5.3 )] Hypoglycemia with Concomitant Use with Insulin and Insulin Secretagogues [see Warnings and Precautions ( 5.4 )] Necrotizing Fasciitis of the Perineum (Fournier's Gangrene) [see Warnings and Precautions ( 5.5 )] Genital Mycotic Infections [see Warnings and Precautions ( 5.6 )] Most common adverse reactions (incidence ≥ 5%) are urinary tract infection, volume depletion, diarrhea, and hypoglycemia. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Lexicon at 1-855-330-2573 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice. In the phase 3 (SOLOIST [see Clinical Studies ( 14.1 )] and SCORED [see Clinical Studies ( 14.2 )] ) placebo-controlled trials, 5,896 subjects received INPEFA. In the SOLOIST study, 336 patients (56%) reached the 400 mg dose. In the SCORED study, 3,934 patients (74%) reached the 400 mg dose. In the SOLOIST study, 5.6% of patients in the INPEFA group and 5.4% of patients in the placebo group discontinued therapy due to adverse events (AEs). In the SCORED study, 5.0% of patients in the INPEFA group and 4.5% of patients in the placebo group discontinued therapy due to AEs. Table 1 Adverse Reactions Reported in ≥ 2% of Patients Treated with INPEFA and Greater Than Placebo in Either SOLOIST or SCORED Adverse Reaction SOLOIST N = 1,216 SCORED N = 10,577 Placebo (%) N = 611 INPEFA (%) N = 605 Placebo (%) N = 5,286 INPEFA (%) N = 5,291 Urinary tract infection 7.2 8.6 11.0 11.5 Volume depletion 8.8 9.3 4.0 5.2 Diarrhea 4.1 6.9 6.0 8.4 Hypoglycemia 2.8 4.3 7.9 7.7 Dizziness 2.5 2.6 2.8 3.3 Genital mycotic infection 0.2 0.8 0.9 2.4 Changes in Laboratory Test Values During Treatment Increase in Serum Creatinine and Decrease in eGFR Initiation of SGLT2 inhibitors, including INPEFA, causes a small increase in serum creatinine and decrease in eGFR. These changes in serum creatinine and eGFR generally occur within 4 weeks of starting therapy and then stabilize regardless of baseline kidney function. Changes that do not fit this pattern should prompt further evaluation to exclude the possibility of acute kidney injury. In studies that included patients with type 2 diabetes mellitus with moderate renal impairment, the acute effect on eGFR reversed after treatment discontinuation, suggesting acute hemodynamic changes may play a role in the renal function changes observed with INPEFA [see Warnings and Precautions ( 5.2 ) and Use in Specific Populations ( 8.6 )] .

12.3 Pharmacokinetics Plasma C max and AUC of sotagliflozin increased in a dose-proportional manner in the therapeutic dose range of 200 mg to 400 mg once daily. Accumulation of sotagliflozin was observed with an approximate 50-100% increase in both C max and area under the concentration-time curve from 0 to 24 hours (AUC 0-24h ) at steady state verses the first day of dosing. Absorption The absolute bioavailability of oral sotagliflozin 400 mg dose was approximately 25% (90% confidence interval [CI] 16% to 39%) for area under the concentration-time curve from time 0 to last measurable concentration (AUC 0-last ). The contribution of enterohepatic circulation to the overall exposure is estimated to be approximately 50%. The median time to maximum plasma concentration (T max ) ranged from 1.25 to 3 hours, over a single-dose range of 200 mg to 2000 mg. Following administration of multiple doses (400 mg and 800 mg), the median T max values ranged from 2.5 to 4 hours. Food Effect When sotagliflozin tablets were administered with a high-caloric breakfast compared to fasting conditions, plasma exposure to sotagliflozin as measured by C max and AUC 0-inf increased by 149% and 50%, respectively. Multiple doses of sotagliflozin 400 mg given immediately before breakfast, 30 minutes prior to breakfast, and 1-hour before breakfast in healthy subjects showed a consistent effect of sotagliflozin on urine glucose excretion (UGE), insulin, and postprandial glucose (PPG) across all dose schedules. It is recommended that INPEFA be taken not more than one hour before the first meal of the day. Distribution Both sotagliflozin and its major human metabolite sotagliflozin 3-O-glucuronide exhibited high binding to human plasma proteins in vitro (> 93% bound), which was not dependent on the concentration of sotagliflozin and sotagliflozin 3-O-glucuronide and was not influenced by the degree of renal or hepatic function. Following administration of a single 400 mg dose of [ 14 C]-sotagliflozin, the mean blood/plasma ratios for total radioactivity were 0.5 and 0.4 for C max and AUC 0-last , respectively, and the mean whole blood to plasma concentration ratio of sotagliflozin ranged from 0.5 to 0.6. The mean apparent volume of distribution of sotagliflozin following administration of a single 400 mg oral dose of [ 14 C]-sotagliflozin was 9000 L. Elimination Metabolism Following the administration of a single dose of 400 mg [ 14 C]-sotagliflozin in healthy subjects, sotagliflozin was extensively metabolized predominantly to sotagliflozin 3-O-glucuronide and it represented 94.3% of the radioactivity in plasma. The key enzymes responsible for the metabolism of sotagliflozin were UGT1A9 and, to a lesser extent, CYP3A4. Following incubation of sotagliflozin with UGT1A9, the 3-O-glucuronide metabolite of sotagliflozin was the main conjugate observed. No acyl glucuronides of sotagliflozin were identified. Excretion Following the administration of a single dose of 400 mg [ 14 C]-sotagliflozin, 57% and 37% of the radioactivity was recovered in the urine and feces, respectively. These results indicate that the main route of elimination was renal. The predominant metabolite detected in urine was sotagliflozin 3-O-glucuronide, representing a mean of 33% of the administered radioactive dose. Unchanged [ 14 C]-sotagliflozin was the predominant radioactive peak detected in fecal extracts representing a mean of 23% of the total administered radioactive dose. Sotagliflozin undergoes enterohepatic circulation. Following administration of 200 mg and 400 mg, mean terminal half-life (T 1/2 ) ranged from 21 to 35 hours for sotagliflozin and from 19 to 26 hours for sotagliflozin 3-O-glucuronide. Effective half-life of sotagliflozin ranged from 5 to 10 hours. Steady state was generally achieved after 5 days of once daily dosing with sotagliflozin 200 mg and 400 mg. In healthy volunteers, mean oral clearance (CL/F) of sotagliflozin ranged from 260 to 370 L/hr following administration of 200 mg and 400 mg sotagliflozin. The median population PK model predicted CL/F in type 2 diabetes mellitus patients with normal renal function was about 300 L/hr. Specific Populations Renal Impairment Exposure of sotagliflozin was evaluated in a dedicated PK study in subjects with mild (eGFR 60 to < 90 mL/min/1.73 m²) and moderate (eGFR 30 to < 60 mL/min/1.73 m²) renal impairment and with normal renal function (eGFR ≥ 90 mL/min/1.73 m²). Exposure to sotagliflozin following a single dose of 400 mg was approximately 70% higher in subjects with mild and up to 170% higher in subjects with moderate renal impairment compared to subjects with normal renal function [see Use in Specific Populations ( 8.6 )]. Hepatic Impairment In a study with subjects with reduced hepatic function, AUC of sotagliflozin was not increased in mild (Child Pugh A) hepatic impaired subjects but was increased by approximately 3-fold in moderate (Child Pugh B) and approximately 6-fold in severe (Child Pugh C) hepatic impaired subjects compared to subjects with normal hepatic function [see Use in Specific Populations ( 8.7 )] . Effects of Age, Sex, Race, and Body Weight on Pharmacokinetics Based on population PK analysis, age, body weight, sex and race (non-white versus primarily whites) do not have a clinically meaningful effect on the PK of sotagliflozin. Drug Interactions In Vitro Studies The major human metabolite of sotagliflozin, sotagliflozin 3-O-glucuronide, was shown to have an in vitro potential to inhibit CYP3A4 and CYP2D6 and to induce CYP3A4. Sotagliflozin was shown to have inhibitory effects on P-glycoprotein (P-gp) and breast cancer resistance protein (BCRP). Sotagliflozin is a substrate of the human uptake transporters organic anion transporter (OAT)3, organic-anion-transporting polypeptides (OATP)1B1, and OATP1B3, but not OAT1 and organic cation transporter 2 (OCT2). Sotagliflozin does not inhibit any of these human uptake transporters at clinically relevant plasma concentrations. In Vivo Studies Figure 1 summarizes the effect on sotagliflozin by concomitantly administered drugs. The observed changes in overall exposure (AUC) of sotagliflozin following coadministration with hydrochlorothiazide, ramipril, metformin, mefenamic acid, and oral contraceptives are not considered to be clinically relevant. Rifampicin (UGT inducer) decreases exposure to sotagliflozin [see Drug Interactions ( 7.2 )]. Figure 1 Effect of Various Medications on the Pharmacokinetics of Sotagliflozin, Displayed as Geometric Mean AUCs and C max Ratios Vertical reference lines indicate 100% (solid) and the 80%-125% range (dashed) a 400 mg sotagliflozin, administered as a single dose b 400 mg sotagliflozin, at steady state AUC 0-last = area under the concentration-time curve from time 0 to last measurable concentration; AUC 0-tau = area under the concentration-time curve from time 0 to end of the dosing period; C max = maximum drug concentration; EE = ethinyl estradiol; NO = norgestimate Figure 2 summarizes the effect on concomitantly administered drugs by sotagliflozin. The increases in exposure (AUC) of metoprolol (CYP2D6 substrate) and rosuvastatin (BCRP substrate), as well as the decrease in exposure to midazolam (CYP3A4 substrate) are not considered to be clinically relevant. The increased exposure (C max and AUC) in ramipril is not considered clinically significant because the exposure of ramiprilat, the primary active metabolite, is minimally increased. The increase in exposure (C max and AUC) of digoxin, a P-gp substrate, when coadministered with sotagliflozin, requires monitoring of patients [see Drug Interactions ( 7.1 )] . Figure 2 Effect of Sotagliflozin on the Pharmacokinetics of Various Medications, Displayed as Geometric Mean AUCs and C max Ratios Vertical reference lines indicate 100% (solid) and the 80%-125% range (dashed) a 400 mg sotagliflozin, administered as a single dose b 400 mg sotagliflozin, at steady state c Norelgestromin is the primary active metabolite of NO d Ramiprilat is the primary active metabolite of ramipril AUC 0-last = area under the concentration-time curve from time 0 to last measurable concentration; AUC 0-tau = area under the concentration-time curve from time 0 to end of the dosing period; C max maximum drug concentration; EE = ethinyl estradiol; NO = norgestimate Figure 1 Figure 2