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SGLT-2 Inhibitors A New Modality for Treating Type 2 Diabetes David Joffe BSPharm, CDE, Clinical Assistant Professor of Pharmacotherapy and Translational Research Courtney Glanzrock, PharmD Candidate University of Florida College of Pharmacy SGLT-1 and SGLT-2 Two sodium glucose transporters, cause glucose reabsorption, have been identified: SGLT-1 and SGLT-2 SGLT-2 is found only in the proximal tubule of the kidney, accounts for 90% of the re-absorption of glucose SGLT-1 is found in the gut and other tissues, account for approximately 10% of glucose reabsorption SGLT-2 Inhibitor - Canagliflozin Invokana (Canagliflozin) 1st SGLT-2 inhibitor, approved March 2013 Once daily dosing before 1st meal of day, 100mg or 300mg tablets MOA: Inhibition of SGLT2 reduces reabsorption of glucose in the kidney, resulting in increased urinary glucose excretion, with a consequent lowering of plasma glucose levels as well as weight loss. Blocks approximately 50-80 grams of glucose per day from being reabsorbed SGLT2-I SGLT-2 Inhibitor-Canagliflozin Positive effects: Reduction in body weight and systolic blood pressure Side effects: Most common: Vaginal yeast infection, urinary tract infection and increased urination. Hypoglycemia (<5%), dehydration, dizziness or fainting, hyperkalemia Contraindications: Clinicians should not use canagliflozin to treat patients with type 1 diabetes, patients with type 2 diabetes who have increased ketones in their blood or urine, severe renal impairment, end-stage renal disease or patients receiving dialysis SGLT-2 Inhibitor First In Class Canagliflozin Side Effects http://www.invokanahcp.com/safety-information/safety-and-tolerabilityprofile?utm_source=google&utm_medium=cpc&utm_campaign=Invokana+HCP&utm_term=canagliflozin%20side%20effects&utm_content=Side+Effe cts+-+Exact|mkwid|suZUJen2m|pcrid|24016786155 Canagliflozin Drug Interactions: 1.UGT Inducers (Rifampin, Phenytoin, Phenobarbitol, Ritonavir)- Decreased canagliflozin, consider increasing dose of canagliflozin 2.Digoxin- Increased digoxin concentration, monitor levels Pregnancy Category C Do Not Use: GFR <30mL/min, end stage renal disease, or patients on dialysis SGLT-2 Inhibitor-Canagliflozin Pre-Marketing Study Results: Average decrease in A1C levels 1% Weight Loss average 5-10 pounds Decrease in systolic blood pressure approximately 4% Increase HDL approximately 7.6% Increase LDL approximately 11.7% Low risk of hypoglycemia SGLT-2 Inhibitors Pipeline: 1.Empagliglozin (Eli Lilly/Behringer) 2.Dapagliflozin (AstraZeneca) 3.Remogliflozin Etabonate (GlaxoSmithKline) 4.Sergliflozin Etabonate (GlaxoSmithKline) 5.Tofoglitazone (Roche & Chugal) Comparing Agents Medication Average A1C lowering Hypoglycemic Agent Weight Gain/Loss Metformin 1.5% No Loss Sulfonylureas 1.5% Yes Gain Glinides 1-1.5% No Gain SGLT-2 Inhibitors 1% No Loss TZDs 0.5-1.4% No Gain α-Glucosidase Inhibitor 0.5-0.8% No Neutral No Neutral DPP-4 Inhibitors 0.5-1% References Berkrot, Bill. "Johnson & Johnson Diabetes Drug Tops Older Therapies in Studies." Reuters. Thomson Reuters, 09 June 2012. Web. 02 Apr. 2013. "Canagliflozin Provided Substantial and Sustained Glycemic Improvements as Monotherapy and in Add-On Combinations in Adults with Type 2 Diabetes in Five Phase 3 Studies." Johnson & Johnson. Jansen Research & Development, 09 June 2012. Web. 02 Apr. 2013. Clarke, Toni. "FDA Approves Johnson & Johnson Diabetes Drug, Canagliflozin." Reuters. Thomson Reuters, 29 Mar. 2013. Web. 01 Apr. 2013. "Diabetes Treatment, Part 2: Oral Agents for Glycemic Management." Clinical Diabetes. N.p., Oct. 2007. Web. 12 Apr. 2013. FDA Approves Invokana to Treat Type 2 Diabetes. N.p., n.d. Web. 01 Apr. 2013 "Invokana." INVOKANA™ (Canagliflozin) Treatment for Type 2 Diabetes. N.p., n.d. Web. 12 Apr. 2013 Nainggolan, Lisa. "FDA Approves Canagliflozin, a First-in-Class Diabetes Drug." Medscape Log In. N.p., 29 Mar. 2013. Web. 01 Apr. 2013.