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Oral Semaglutide reduces HbA1c and body weight in people with long duration of type 2 diabetes treated with Insulin


The results from PIONEER 8, a phase 3a trial with oral Semaglutide ( Ozempic ) for the treatment of adults with type 2 diabetes.
Oral Semaglutide is an investigational GLP-1 analogue taken once daily as a tablet.
The 52-week trial investigated the efficacy and safety of 3, 7 and 14 mg oral Semaglutide compared with placebo in 731 people with type 2 diabetes treated with Insulin and an average duration of diabetes of 15 years.
During the first 26-week treatment period, the total daily Insulin dose was not allowed to be increased above baseline followed by a 26-week period where the Insulin treatment was adjusted without restrictions.

Two distinct statistical approaches to evaluating the effects of oral Semaglutide were applied in the PIONEER 8 trial; a primary statistical approach required by recent regulatory guidance evaluating the effect regardless of discontinuation of treatment and use of rescue medication, and a secondary statistical approach describing the effect while on treatment and without use of rescue medication.

When applying the primary statistical approach, the trial achieved its primary objective by demonstrating statistically significant and superior reductions in glycated haemoglobin ( HbA1c ) and body weight with all three doses of oral Semaglutide compared to placebo, all in addition to Insulin, at week 26.

When applying the secondary statistical approach, from a mean baseline of 8.2%, people treated with 3, 7 and 14 mg oral Semaglutide achieved reductions in HbA1c of 0.6%, 1.0% and 1.4% respectively, compared to no reduction ( 0.0% ) in people treated with placebo, all in addition to Insulin, at week 26, and 0.5%, 0.8% and 1.2% respectively, compared with 0.0% at week 52.
The American Diabetes Association ( ADA ) treatment target of HbA1c below 7.0% was achieved by 36%, 47% and 64% of people treated with 3, 7 and 14 mg oral Semaglutide respectively, compared to 10% of people treated with placebo at week 52.
In addition, from a mean baseline body weight of 85.9 kg, people treated with 3, 7 and 14 mg oral Semaglutide experienced a weight loss of 1.0 kg, 2.9 kg and 4.3 kg, respectively, compared to a weight increase of 0.6 kg in people treated with placebo at week 52, all in addition to Insulin.
The mean total Insulin dose at baseline was 60, 62 and 54 units/day for people treated with 3, 7 and 14 mg oral Semaglutide respectively, compared to 56 IU/day for people treated with placebo, and the total Insulin dose at week 52 was increased by 2 units/day, reduced by 6 units/day and reduced by 7 units/day for people treated with 3, 7 and 14 mg oral Semaglutide respectively, compared to an increase of 10 units/day for people treated with placebo.

In the 52-week trial, people treated with 3, 7 and 14 mg oral Semaglutide experienced few and comparable levels of severe or blood glucose-confirmed hypoglycaemic episodes compared to placebo.
Oral semaglutide was well-tolerated and with a profile consistent with GLP-1-based therapy.
The most common adverse event for oral Semaglutide was mild to moderate nausea, which diminished over time.
In PIONEER 8, 11-23% of people treated with oral Semaglutide experienced nausea, compared to 7% of people treated with placebo.
The proportion of people who discontinued treatment due to adverse events was 7-14% for people treated with oral semaglutide compared to 3% with placebo. ( Xagena )

Source: Novo Nordisk, 2018

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