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Comparison of the Efficacy and Safety of Two Different Dose Adjustment Regimens for Insulin Degludec/Insulin Aspart in Subjects With Type 2 Diabetes Mellitus Previously Treated With Insulin Glargine

A Trial Comparing the Efficacy and Safety of Two Different Titration Algorithms for Insulin Degludec/Insulin Aspart in Subjects With Type 2 Diabetes Mellitus Previously Treated With Insulin Glargine (BOOST®: SIMPLE vs. STEPWISE)

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01680341
Acronym
BOOST®
Enrollment
272
Registered
2012-09-07
Start date
2012-08-31
Completion date
2013-08-22
Last updated
2018-04-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Diabetes, Diabetes Mellitus, Type 2

Brief summary

This trial is conducted in Africa, Asia, Europe and the United States of America (USA). The aim of the trial is to compare the efficacy and safety of two different titration algorithms for insulin degludec/insulin aspart (IDeg/IAsp) in subjects with type 2 diabetes mellitus previously treated with insulin glargine.

Interventions

DRUGinsulin degludec/insulin aspart

Twice weekly self-titration at intervals of 3-4 days, based upon a single pre-breakfast and pre-dinner SMPG (self-measured plasma glucose) value. For subcutaneous (s.c., under the skin) administration.

Sponsors

Novo Nordisk A/S
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Type 2 diabetes (diagnosed clinically) for at least 24 weeks prior to Visit 2 (randomisation) * Currently treated with IGlar (Insulin Glargine) and up to 3 oral antidiabetic drugs (OADs) (metformin, DPP-4 inhibitor, sulphonylurea/glinide or alpha-glucosidase inhibitor). All antidiabetic treatments should have been ongoing for at least 12 weeks prior to Visit 2 (randomisation) and doses should have been stable in this period of time * Glycosylated haemoglobin (HbA1c) 7.0-10.0% (both inclusive) by central laboratory analysis * Body mass index (BMI) below or equal to 40 kg/m\^2

Exclusion criteria

* Treatment with glucagon-like peptide 1 (GLP-1) receptor agonists or thiazolidinediones (TZDs) both within the last 12 weeks prior to Visit 2 (randomisation) * Stroke; heart failure New York Heart Association (NYHA) class III or IV; myocardial infarction; unstable angina pectoris; or coronary arterial bypass graft or angioplasty; all within the last 24 weeks prior to Visit 2 (randomisation) * Uncontrolled or untreated severe hypertension defined as systolic blood pressure above or equal to 180 mmHg and/or diastolic blood pressure above or equal to 100 mmHg * Recurrent severe hypoglycaemia (more than 1 severe hypoglycaemic event during last 12 months) or hypoglycaemic unawareness as judged by the investigator * Life-threatening disease (e.g. cancer)

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline in HbA1c (Glycosylated Haemoglobin) (%)Week 0, Week 26Change from baseline in HbA1c after 26 weeks of treatment.

Secondary

MeasureTime frameDescription
Subjects With HbA1c Below 7.0%Week 26Number of subjects with HbA1c below 7% after 26 weeks of treatment.
Percentage of Subjects With HbA1c Below 7.0% Without Confirmed HypoglycaemiaWeek 26Percentage of subjects with HbA1c below 7% without confirmed hypoglycaemic episodes after 26 weeks of treatment.
Incidence of Treatment Emergent Adverse Events (TEAEs)Weeks 0-28A Treatment Emergent Adverse Event (TEAE) was defined as an event that had onset date on or after the first day of exposure to randomised treatment and no later than 7 days after the last day of randomised treatment.
Change From Baseline in Fasting Plasma Glucose (FPG)Week 0, Week 26Change from baseline in fasting plasma glucose (FPG) after 26 weeks of treatment
Number of Treatment Emergent Confirmed Hypoglycaemic Episodes in the Maintenance PeriodFrom week 16 to end of trial including follow-up (week 27)Confirmed hypoglycaemic episodes in the maintenance period (from Week 16 to the end of the trial including follow-up \[Week 27\]) consisted of episodes of severe hypoglycaemia and minor hypoglycaemic episodes. Severe hypoglycaemic episodes were defined as requiring assistance to administer carbohydrate, glucagon, or other resuscitative actions. Minor hypoglycaemic episodes were defined as able to treat her/himself and plasma glucose below 3.1 mmol/L.
Number of Treatment Emergent Nocturnal (00:01-05:59) Confirmed Hypoglycaemic EpisodesWeeks 0-27Confirmed hypoglycaemic episodes consisted of episodes of severe hypoglycaemia and minor hypoglycaemic episodes. Severe hypoglycaemic episodes were defined as requiring assistance to administer carbohydrate, glucagon, or other resuscitative actions. Minor hypoglycaemic episodes were defined as able to treat her/himself and plasma glucose below 3.1 mmol/L. Nocturnal hypoglycaemic episodes were defined as occurring between 00:01 and 05:59 am.
Number of Treatment Emergent Confirmed Hypoglycaemic EpisodesWeeks 0-27Confirmed hypoglycaemic episodes consisted of episodes of severe hypoglycaemia and minor hypoglycaemic episodes. Severe hypoglycaemic episodes were defined as requiring assistance to administer carbohydrate, glucagon, or other resuscitative actions. Minor hypoglycaemic episodes were defined as able to treat her/himself and plasma glucose below 3.1 mmol/L.

Countries

Algeria, Germany, Malaysia, Turkey (Türkiye), United States

Participant flow

Recruitment details

The trial was conducted in 43 sites in 5 countries: Algeria (3 sites), Germany (5 sites), Malaysia (3 sites), Turkey (3 sites), and United States (29 sites).

Pre-assignment details

While entering the treatment period the subjects discontinued insulin glargine (IGlar) and sulfonylurea (SU)/glinides (if administered) but continued treatment with up to 3 other oral antidiabetic drugs (OADs) as prescribed.

Participants by arm

ArmCount
IDegAsp Simple
Insulin degludec/insulin aspart (IDegAsp) was injected subcutaneously (s.c.) in either abdomen, upper arm (deltoid area) or thigh. A pre-filled pen injector (PDS290) was used to administer IDegAsp. During treatment period subjects were allowed to continue up to 3 (oral antidiabetic drugs) OADs, except insulin glargine, sulphonylurea and glinides. In the IDegAsp twice daily (BID) simple titration algorithm arm, self-titration was performed twice weekly at intervals of 3-4 days and based upon a single pre-breakfast and pre-dinner self-measured plasma glucose (SMPG) value.
136
IDegAsp Step Wise
IDegAsp was injected subcutaneously (s.c.) in either abdomen, upper arm (deltoid area) or thigh. A pre-filled pen injector (PDS290) was used to administer IDegAsp. During treatment period subjects were allowed to continue up to 3 (oral antidiabetic drugs) OADs, except insulin glargine, sulphonylurea and glinides. In the IDegAsp twice daily (BID) stepwise titration algorithm arm, self-titration was done once weekly based on the lowest of 3 pre-breakfast and 3 pre-dinner SMPG values (measurements on 3 consecutive days prior to titration).
136
Total272

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event32
Overall StudyUnclassified1815

Baseline characteristics

CharacteristicIDegAsp SimpleIDegAsp Step WiseTotal
Age, Continuous58.8 years
STANDARD_DEVIATION 9.8
59.1 years
STANDARD_DEVIATION 9.4
58.9 years
STANDARD_DEVIATION 9.6
Fasting plasma glucose7.8 mmol/L
STANDARD_DEVIATION 2.3
8.1 mmol/L
STANDARD_DEVIATION 3
8.0 mmol/L
STANDARD_DEVIATION 2.6
Glycosylated Haemoglobin (HbA1c)8.2 percentage of glycosylated haemoglobin
STANDARD_DEVIATION 0.9
8.2 percentage of glycosylated haemoglobin
STANDARD_DEVIATION 0.9
8.2 percentage of glycosylated haemoglobin
STANDARD_DEVIATION 0.9
Sex: Female, Male
Female
60 Participants53 Participants113 Participants
Sex: Female, Male
Male
76 Participants83 Participants159 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
45 / 13553 / 134
serious
Total, serious adverse events
7 / 13510 / 134

Outcome results

Primary

Change From Baseline in HbA1c (Glycosylated Haemoglobin) (%)

Change from baseline in HbA1c after 26 weeks of treatment.

Time frame: Week 0, Week 26

Population: The full analysis set (FAS) included all randomised subjects. Missing data were imputed using last observation carried forward (LOCF).

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
IDegAsp SimpleChange From Baseline in HbA1c (Glycosylated Haemoglobin) (%)-1.45 Percent (%) glycosylated haemoglobinStandard Error 0.09
IDegAsp Step WiseChange From Baseline in HbA1c (Glycosylated Haemoglobin) (%)-1.33 Percent (%) glycosylated haemoglobinStandard Error 0.09
Secondary

Change From Baseline in Fasting Plasma Glucose (FPG)

Change from baseline in fasting plasma glucose (FPG) after 26 weeks of treatment

Time frame: Week 0, Week 26

Population: The full analysis set (FAS) included all randomised subjects. Missing data were imputed using LOCF.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
IDegAsp SimpleChange From Baseline in Fasting Plasma Glucose (FPG)-1.68 mmol/LStandard Error 0.23
IDegAsp Step WiseChange From Baseline in Fasting Plasma Glucose (FPG)-1.98 mmol/LStandard Error 0.23
Secondary

Incidence of Treatment Emergent Adverse Events (TEAEs)

A Treatment Emergent Adverse Event (TEAE) was defined as an event that had onset date on or after the first day of exposure to randomised treatment and no later than 7 days after the last day of randomised treatment.

Time frame: Weeks 0-28

Population: The safety analysis set included all subjects who received at least one dose of the investigational product.

ArmMeasureValue (NUMBER)
IDegAsp SimpleIncidence of Treatment Emergent Adverse Events (TEAEs)242 number of events
IDegAsp Step WiseIncidence of Treatment Emergent Adverse Events (TEAEs)286 number of events
Secondary

Number of Treatment Emergent Confirmed Hypoglycaemic Episodes

Confirmed hypoglycaemic episodes consisted of episodes of severe hypoglycaemia and minor hypoglycaemic episodes. Severe hypoglycaemic episodes were defined as requiring assistance to administer carbohydrate, glucagon, or other resuscitative actions. Minor hypoglycaemic episodes were defined as able to treat her/himself and plasma glucose below 3.1 mmol/L.

Time frame: Weeks 0-27

Population: The safety analysis set included all subjects who received at least one dose of the investigational product.

ArmMeasureValue (NUMBER)
IDegAsp SimpleNumber of Treatment Emergent Confirmed Hypoglycaemic Episodes552 episodes
IDegAsp Step WiseNumber of Treatment Emergent Confirmed Hypoglycaemic Episodes323 episodes
Secondary

Number of Treatment Emergent Confirmed Hypoglycaemic Episodes in the Maintenance Period

Confirmed hypoglycaemic episodes in the maintenance period (from Week 16 to the end of the trial including follow-up \[Week 27\]) consisted of episodes of severe hypoglycaemia and minor hypoglycaemic episodes. Severe hypoglycaemic episodes were defined as requiring assistance to administer carbohydrate, glucagon, or other resuscitative actions. Minor hypoglycaemic episodes were defined as able to treat her/himself and plasma glucose below 3.1 mmol/L.

Time frame: From week 16 to end of trial including follow-up (week 27)

Population: The safety analysis set included all subjects who received at least one dose of the investigational product. Subjects in maintenance period were included in this analysis.

ArmMeasureValue (NUMBER)
IDegAsp SimpleNumber of Treatment Emergent Confirmed Hypoglycaemic Episodes in the Maintenance Period230 episodes
IDegAsp Step WiseNumber of Treatment Emergent Confirmed Hypoglycaemic Episodes in the Maintenance Period143 episodes
Secondary

Number of Treatment Emergent Nocturnal (00:01-05:59) Confirmed Hypoglycaemic Episodes

Confirmed hypoglycaemic episodes consisted of episodes of severe hypoglycaemia and minor hypoglycaemic episodes. Severe hypoglycaemic episodes were defined as requiring assistance to administer carbohydrate, glucagon, or other resuscitative actions. Minor hypoglycaemic episodes were defined as able to treat her/himself and plasma glucose below 3.1 mmol/L. Nocturnal hypoglycaemic episodes were defined as occurring between 00:01 and 05:59 am.

Time frame: Weeks 0-27

Population: The safety analysis set included all subjects who received at least one dose of the investigational product.

ArmMeasureValue (NUMBER)
IDegAsp SimpleNumber of Treatment Emergent Nocturnal (00:01-05:59) Confirmed Hypoglycaemic Episodes82 episodes
IDegAsp Step WiseNumber of Treatment Emergent Nocturnal (00:01-05:59) Confirmed Hypoglycaemic Episodes49 episodes
Secondary

Percentage of Subjects With HbA1c Below 7.0% Without Confirmed Hypoglycaemia

Percentage of subjects with HbA1c below 7% without confirmed hypoglycaemic episodes after 26 weeks of treatment.

Time frame: Week 26

Population: The full analysis set (FAS) included all randomised subjects. Missing data were imputed using LOCF. Twenty five (25) subjects did not contribute to statistical analysis as Endpoint was only defined for subjects exposed for at least 12 treatment weeks.

ArmMeasureValue (NUMBER)
IDegAsp SimplePercentage of Subjects With HbA1c Below 7.0% Without Confirmed Hypoglycaemia25.4 percentage of subjects
IDegAsp Step WisePercentage of Subjects With HbA1c Below 7.0% Without Confirmed Hypoglycaemia32.0 percentage of subjects
Secondary

Subjects With HbA1c Below 7.0%

Number of subjects with HbA1c below 7% after 26 weeks of treatment.

Time frame: Week 26

Population: The full analysis set (FAS) included all randomised subjects. Missing data were imputed using LOCF.

ArmMeasureValue (NUMBER)
IDegAsp SimpleSubjects With HbA1c Below 7.0%91 Subjects
IDegAsp Step WiseSubjects With HbA1c Below 7.0%85 Subjects

Source: ClinicalTrials.gov · Data processed: Mar 14, 2026