Efficacy and Safety of Dapagliflozin in Patients With
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1938 Diabetes Care Volume 41, September 2018 fi Chantal Mathieu,1 Paresh Dandona,2 Ef cacy and Safety of Pieter Gillard,1 Peter Senior,3 fl Christoph Hasslacher,4 Eiichi Araki,5 Dapagli ozin in Patients With Marcus Lind,6,7 Stephen C. Bain,8 Serge Jabbour,9 Niki Arya,10 Lars Hansen,11 EMERGING THERAPIES: DRUGS AND REGIMENS Inadequately Controlled Type 1 Fredrik Thoren,´ 12 and Anna Maria Langkilde,12 on behalf of the Diabetes (the DEPICT-2 Study): DEPICT-2 Investigators* 24-Week Results From a Randomized Controlled Trial Diabetes Care 2018;41:1938–1946 | https://doi.org/10.2337/dc18-0623 1Clinical and Experimental Endocrinology, Uni- versity of Leuven, Leuven, Belgium 2Department of Medicine, State University of New York at Buffalo, Buffalo, NY 3Division of Endocrinology, University of Alberta, Edmonton, Canada 4Diabetesinstitut Heidelberg, Heidelberg, Germany 5Department of Metabolic Medicine, Faculty of OBJECTIVE Life Sciences, Kumamoto University, Kumamoto, Japan This 24-week, double-blinded, phase 3 clinicaltrial (DEPICT-2; ClinicalTrials.gov, 6Institute of Medicine, University of Gothenburg, NCT02460978) evaluated efficacy and safety of dapagliflozin as adjunct therapy to Gothenburg, Sweden 7 adjustable insulin in patients with inadequately controlled type 1 diabetes (HbA Department of Medicine, NU Hospital Group, 1c Uddevalla, Sweden 7.5–10.5%). 8Diabetes Research Unit, Swansea University, Swansea, Wales, U.K. RESEARCH DESIGN AND METHODS 9Division of Endocrinology, Diabetes and Met- Patients were randomized 1:1:1 to dapagliflozin 5 mg (n = 271), dapagliflozin abolic Diseases, Sidney Kimmel Medical College 10 mg (n = 270), or placebo (n = 272) plus insulin. Insulin dose was adjusted by at Thomas Jefferson University, Philadelphia, PA 10AstraZeneca, Gaithersburg, MD investigators according to self-monitored glucose readings, local guidance, and 11MedImmune, Gaithersburg, MD individual circumstances. 12AstraZeneca, Gothenburg, Sweden Corresponding author: Chantal Mathieu, RESULTS [email protected]. Baseline characteristics were balanced between treatment groups. At week 24, Received 21 March 2018 and accepted 18 June dapagliflozin significantly decreased HbA1c (primary outcome; difference vs. 2018. placebo: dapagliflozin 5 mg 20.37% [95% CI 20.49, 20.26], dapagliflozin Clinical trial reg. no. NCT02460978, clinicaltrials 10 mg –0.42% [20.53, 20.30]), total daily insulin dose (210.78% [213.73, .gov. 27.72] and 211.08% [214.04, 28.02], respectively), and body weight (23.21% This article contains Supplementary Data online [23.96, 22.45] and 23.74% [24.49, 22.99], respectively) (P < 0.0001 for all). at http://care.diabetesjournals.org/lookup/suppl/ doi:10.2337/dc18-0623/-/DC1. Mean interstitial glucose, amplitude of glucose excursion, and percent of readings This article is featured in a podcast available at within target glycemic range (>70 to £180 mg/dL) versus placebo were signifi- http://www.diabetesjournals.org/content/diabetes- cantly improved. More patients receiving dapagliflozin achieved a reduction in core-update-podcasts. HbA1c ‡0.5% without severe hypoglycemia compared with placebo. Adverse events At the time of the study, L.H. worked at Bristol- were reported for 72.7%, 67.0%, and 63.2% of patients receiving dapagliflozin 5 mg, Myers Squibb, Princeton, NJ. dapagliflozin 10 mg, and placebo, respectively. Hypoglycemia, including severe *A completelist of the DEPICT-2Investigatorscan hypoglycemia, was balanced between groups. There were more adjudicated def- be found in the Supplementary Data online. inite diabetic ketoacidosis (DKA) events with dapagliflozin: 2.6%, 2.2%, and 0% © 2018 by the American Diabetes Association. fl fl Readers may use this article as long as the work for dapagli ozin 5 mg, dapagli ozin 10 mg, and placebo, respectively. is properly cited, the use is educational and not for profit, and the work is not altered. More infor- CONCLUSIONS mation is available at http://www.diabetesjournals Dapagliflozin as adjunct therapy to adjustable insulin in patients with type 1 .org/content/license. diabetes was well tolerated and improved glycemic control with no increase in See accompanying articles, pp. 1970 hypoglycemia versus placebo but with more DKA events. and 1981. care.diabetesjournals.org Mathieu and Associates 1939 Less than one-third of patients with adjustable insulin, providing further sup- or malignancy (within 5 years) or had type 1 diabetes achieve optimal glycemic portive evidence for its use in the treat- previously used any SGLT2 inhibitor. A control (HbA1c ,7% [,53 mmol/mol]) ment of type 1 diabetes. comprehensive list of inclusion and exclu- (1,2). Even when target HbA1c levels sion criteria is provided in Supplementary are achieved, there is still evidence RESEARCH DESIGN AND METHODS Table 1. for excess mortality in patients with Study Design type 1 diabetes (3). Insulin therapy is DEPICT-2 was the second of two random- Study Medications and Procedures the mainstay of treatment (4); however, Eligible patients entered an 8-week lead- ized, double-blind, parallel-controlled, it is associated with hypoglycemia (5–7) in period to optimize diabetes manage- three-arm, multicenter, phase 3 stud- and weight gain (8), both of which are ment. On completing the lead-in period, ies evaluating the efficacy and safety important cardiovascular risk factors patients with an HbA of 7.5–10.5% of dapagliflozin 5 mg and 10 mg as 1c (9,10). Occurrence of hypoglycemia hin- (58–91 mmol/mol) were randomized adjunct therapy to adjustable insulin ders the achievement of glycemic tar- 1:1:1 using an interactive voice/web in adult patients with type 1 diabetes gets and affects the quality of life of response system to oral dapagliflozin and inadequate glycemic control. The patients (11–13), and severe hypoglyce- 5 mg, dapagliflozin 10 mg, or placebo methodology has been published pre- mia is a potentially serious event. Other once daily. Patients were stratified by use viously (16). The study was conducted challenges for patients with type 1 di- of continuous glucose monitoring (CGM) at 148 sites in the following countries: abetes include excessive glycemic vari- at baseline (in which case they would Argentina, Belgium, Canada, Chile, Germany, ability and hypoglycemia unawareness continue to use their own device dur- Japan, the Netherlands, Poland, the (11). Thus, strategies to improve glyce- ing the study in addition to the masked Russian Federation, Sweden, Switzerland, mic control, without increasing hypo- study CGM), use of CSII or MDI for insulin the U.K., and the U.S., in accordance glycemia or weight gain, would fulfill an administration at baseline, and baseline with the Declaration of Helsinki and unmet need. HbA (7.5 to ,9.0% [58 to ,75 mmol/ Good Clinical Practice Guidelines as 1c Sodium–glucose cotransporter 2 mol] or 9.0–10.5% [75–91 mmol/mol]). defined by the International Council (SGLT2) inhibitors are insulin-independent, The lead-in period was followed by a for Harmonisation. It was approved by glucose-dependent antihyperglycemic 24-week, short-term, double-blind treat- the institutional review boards and in- agents that have demonstrated poten- ment period and a 28-week, long-term dependent ethics committees for all tial for use as adjunct therapy to insulin subject- and site-blinded extension phase participating centers. All participants in the treatment of type 1 diabetes, assessing safety, followed by a 4-week provided written informed consent. For providing additional treatment benefits follow-up period. The 24-week results Japanese patients $18 to ,20 years old, such as weight loss and decreased gly- are reported here. informed consent was obtained from cemic variability. Dapagliflozin, an SGLT2 Glycemic control (including self- their parents/guardians. The DEPICT-2 inhibitor approved for the treatment of monitoring of blood glucose [SMBG]) study is registered on ClinicalTrials.gov type 2 diabetes, and sotagliflozin, a non- and home ketone (b-hydroxybutyrate (NCT02460978). selective SGLT2/SGLT1 inhibitor, have [BOHB]) measurements were assessed shown promise as adjunct treatments Study Participants at each study visit. Insulin doses were for type 1 diabetes in previous studies This study included adult patients with adjusted as deemed appropriate by the (14–17). The recent randomized, placebo- inadequately controlled type 1 diabetes investigator, based on SMBG readings controlled, phase 3, 24-week DEPICT-1 (HbA1c 7.7–11.0% [61–97 mmol/mol] at (recommended four times per day at a (Efficacy and safety of dapagliflozin in screening/enrollment; 7.5–10.5% [58–91 minimum and six times per day during patients with inadequately controlled mmol/mol] at randomization) receiv- protocol-specified periods of intense type 1 diabetes [16]) study demonstrated ing adjustable insulin via multiple daily glucose monitoring), local guidance, that when used as adjunct therapy to injections (MDI) or continuous subcutane- and individual circumstances. The pro- adjustable insulin in patients with inad- ous insulin infusion (CSII) for $12 months tocol did not specify uniform insulin equately controlled type 1 diabetes, prior to screening (total insulin dose titration algorithms. After the first dapagliflozin significantly decreased $0.3 IU/kg/day for $3 months prior dose of the study drug, the daily insulin HbA1c, body weight, total insulin dose, to screening), and with C-peptide ,0.7 dose was recommended to be reduced and glycemic variability. Treatment ng/mL and BMI $18.5 kg/m2.Patients by up to 20% to balance the risk of was generally well tolerated, with simi- were excluded if they had type 2 diabe- hypoglycemia and DKA due to excessive lar levels of hypoglycemia compared tes, a history of pancreatic surgery, insulin dose reduction (14,18,19), be- with placebo (16). The overall adverse chronic pancreatitis, or other pancre- fore subsequently attempting to titrate event (AE) profile was consistent with that atic disorders resulting in decreased it back as far as possible to baseline observed in patients with type 2 diabe- b-cell capacity, signs of poorly controlled levels. Events of potential DKA were tes. There were few events of diabetic diabetes (including DKA requiring medi- monitored throughout the study.