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Sotagliflozin holds promise for T1D

Audrey Abella
23 Oct 2019

The addition of the dual SGLT*1 and SGLT2 inhibitor sotagliflozin to insulin led to improvements in glycaemic control, body weight, and systolic blood pressure (SBP) in overweight/obese individuals with type 1 diabetes (T1D), according to a post hoc analysis presented at EASD 2019.

Investigators compared the 24-week efficacy and 52-week safety of sotagliflozin 200 and 400 mg as an adjunct to insulin against optimized insulin alone in patients enrolled in the inTandem1 and 2** trials (n=916) with a baseline body mass index (BMI) of ≥27 kg/m². [EASD 2019, abstract OP2]

At 24 weeks, compared with insulin alone, both sotagliflozin doses led to greater reductions in HbA1c (least squares [LS] mean change, -0.43 percent [200 mg] and -0.50 percent [400 mg] vs -0.04 percent) and body weight (LS mean change, -1.93 and -2.98 kg vs 0.34 kg; p<0.001 for all).

Sotagliflozin 400 mg also outdid insulin alone in reducing SBP (LS mean change, -4.0 vs -1.6 mm Hg; p=0.005).

Percentage of time-in-range (70–180 mg/dL) also increased with both sotagliflozin doses vs insulin alone (LS mean change, 6.25 percent; p=0.007 [200 mg] and 13.13 percent; p<0.001 [400 mg] vs -1.92 percent). These translate to an improvement of almost 2 and 3.5 hours with sotagliflozin 200 and 400 mg, respectively, with participants reporting “less blood glucose swings” from day 1 onwards, noted study investigator Dr Thomas Danne from the Hannover Medical School in Hannover, Germany. “This is where dual inhibition [appears to] play out,” he said.

At week 52, both sotagliflozin doses reduced the incidents of severe hypoglycaemia (EAIR***/1,000 subject-years [SY], 46.51 [200 mg] and 41.06 [400 mg] vs 81.03 [insulin alone]) and documented hypoglycaemia (≤55 mg/dL [3.1 mmol/L]; event rate, 13.75; p=0.002 and 14.57; p=0.014 vs 17.99).

“[This is] the big charm of this … drug. Not only does it improve HbA1c, [it also does not] increase the risk of hypoglycaemia,” said Danne.

Of note was the higher incidence of diabetic ketoacidosis (DKA) associated with both sotagliflozin doses as opposed to insulin alone at 1 year (EAIR/1,000 SY, 28.62 [200 mg] and 37.64 [400 mg] vs 3.68). However, compared with non-obese adults (BMI <27 kg/m2), the absolute risk difference of EAIR minus insulin alone was lower in the overweight/obese cohort (24.94 vs 34.91 [200 mg] and 33.95 vs 48.98 [400 mg]).

Nonetheless, the number of events associated with sotagliflozin 200 and 400 mg should be taken into account, underscored Danne, as these were relatively few and similar between both BMI arms (7 and 9 [non-obese] vs 9 and 11 [obese]). “It is very difficult to draw conclusions from few events. [While our findings reflect an] increased risk of DKA with [sotagliflozin] … I think it is futile to discuss … just on the basis of BMI,” Danne pointed out.

 

Addressing an unmet need

Nearly half of adults with T1D are overweight/obese, thereby increasing their risk of suboptimal glucose control and micro- and macrovascular complications. [Curr Diab Rep 2017;17:92; J Diabetes Complications 2016;30:212-220] “[Although it seems] a little counterintuitive, [hypoglycaemic] patients … have to take in extra carbohydrates, [which may] add to the … problem of overweight/obesity in T1D,” said Danne.

The big unmet need for T1D is the increased mortality due to higher cardiovascular (CV) risk, Danne pointed out. Therefore, treatment should also aim towards the improvement of CV risk factors such as weight and BP, he added. “If you improve these, we can speculate that you are … doing something good … in this high-risk group of overweight patients [with T1D].”

Taken together, the findings show a trend toward improved efficacy and a favourable safety profile with sotagliflozin in this patient subgroup compared with the overall population, noted Danne. “[Our findings suggest that] sotagliflozin as adjunctive therapy to insulin may address several unmet needs in this high-risk population … I think [the reason] this class of drugs holds so much promise [is that it goes beyond] improvement of glycaemic control.”

 

 

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Most Read Articles
Stephen Padilla, 25 Jul 2019
Nonvitamin K antagonist oral anticoagulants (NOACs) appear to confer more clinical benefits to elderly patients with atrial fibrillation (AF) than vitamin K antagonist anticoagulants (VKAs), suggests a study, adding that this is primarily driven by the lower rates of major bleeding.
Rachel Soon, 05 Dec 2018

At the recent Malaysian Community Pharmacy Business Forum (MyCPBF), a discussion forum was held on the subject of “Transcending Primary Healthcare Services: The Future of Specialized Pharmacy Services and Pharmacy Specialization”.

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Associate Professor Ng Lee Ching, Director of the Environmental Health Institute (EHI) at the National Environment Agency (NEA), Singapore, speaks about the role of primary care physicians and government agencies in preventing dengue epidemics.

22 Aug 2018
In patients with atrial fibrillation (AF) naïve to oral anticoagulants (OACs), standard-dose nonvitamin K antagonist OACs (NOACs) provides better survival benefits than warfarin, a recent meta-analysis has shown.