E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
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E.1.1.1 | Medical condition in easily understood language |
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E.1.1.2 | Therapeutic area | Diseases [C] - Nutritional and Metabolic Diseases [C18] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 18.0 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10067584 |
E.1.2 | Term | Type 1 diabetes mellitus |
E.1.2 | System Organ Class | 10027433 - Metabolism and nutrition disorders |
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E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
The primary objective of this study is to compare the change from baseline in HbA1c between dapagliflozin 5 mg or 10 mg plus adjustable insulin versus placebo plus adjustable insulin after 24 weeks of double-blinded treatment.
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E.2.2 | Secondary objectives of the trial |
-Compare % change in total daily insulin dose with DAPA 5or10 mg + insulin vs placebo + insulin after 24w
-% change in BW with DAPA 5or10 mg + insulin vs placebo + insulin after 24w
-The change in value of 24h glucose from CGM with dapagliflozin 5or10 mg + insulin vs placebo + insulin after 24w
-The change in MAGE of 24-hour glucose from CGM with DAPA 5or10 mg plus insulin vs placebo + insulin after 24w
-The change in the percent of 24h glucose from CGM that falls within the target range of >70 mg/dL and ≤180 mg/dL with DAPA 5or10 mg + insulin vs placebo plus insulin after 24w
-Compare DAPA 5or10 mg + insulin vs placebo + insulin for the proportion of achieving an HbA1c reductionfrom baseline to W24 visit ≥ 0.5% without severehypoglycemia
-Proportion of hypoglycemia and the frequency and severity of the hypoglycemia with DAPA 5or10 mg + insulin vs placebo + insulin
-Safety&tolerability by assessment of AE, vital signs, DKA, physical and lab findings |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
- Signed informed consent
- Diagnosis of T1DM. In addition, a central laboratory C-peptide < 0.7 ng/mL (0.23 nmol/L) is required
- Ages 18 to 75 years, inclusive
- Insulin use for at least 12 months prior to screening per subject reported or medical records and:
o Method of insulin administration (MDI or CSII) must have been unchanged for at least 3 months prior to screening per subject reported or medical records. Subjects must be taking a total insulin dose of ≥0.3 U/kg/day for at least 3 months prior to screening
o If using MDI, the subject must be taking ≥ 3 injections per day
- HbA1c eligibility criteria include:
o Screening Visit: Central laboratory HbA1c ≥ 7.7% and ≤ 11.0%
Note: a one-time repeat HbA1C is allowed for subjects in screening if their initial result is within ± 0.2% of the cut off values
o Week -1 Visit: Central laboratory HbA1c ≥7.5 % and ≤ 10.7%
Note: a one-time repeat HbA1C is allowed for subjects in lead-in if their test result is within ± 0.2% of the cut off values
- BMI ≥ 18.5 kg/m2
- Women of childbearing potential (WOCBP) must have a negative serum or urine pregnancy test (minimum sensitivity 25 IU/L or equivalent units of HCG) within 24 hours prior to the start of investigational product
- WOCBP must agree to follow instructions for method(s) of contraception as outlined in the study
- Women must not be breastfeeding |
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E.4 | Principal exclusion criteria |
o History of T2DM
Note: subjects with a previous misdiagnosis of T2DM in their medical history must have one of the following in order to be eligible for this trial:
-Positive autoantibodies for GAD65, phosphatase IA-2/IA2β, or ZnT8
-Fasting c-peptide value below the lower limit of detection performed by the Lab
o History of maturity onset diabetes of young
o Pancreatic surgery, chronic or other pancreatic disorders that could result in decreased β-cell capacity
o Previous use of DAPA and/or any other SGLT-2 inhibitors
o Use of insulin-sensitizing agents, such as metformin and/or thiazolidinediones, within 2 months prior to the screening
o Use of any GLP-1 receptor agonist within the following timeframe prior to the screening:
i) 1 month for once or twice daily administration
ii) 2 months for once weekly administration
o Any non-insulin, antihyperglycemic agent use within 1 month prior to the Screening
o History of DKA requiring medical intervention within 1 month prior to the screening
o History of hospital admission for glycemic control within 1 month prior to the Screening
o Frequent episodes of severe hypoglycemia as defined by more than one episode requiring medical assistance, emergency care, and/or glucagon therapy administered by a third-party individual within 1 month prior to the screening
o Symptoms of poorly controlled diabetes that would preclude participation in this trial including but not limited to marked polyuria and polydipsia with greater than 10% weight loss during the 3 months prior to screening
o History of Addison’s disease or chronic adrenal insufficiency
o History of diabetes insipidus
o Any of the following cardiovascular/vascular diseases within 6 months of the screening:
- Myocardial infarction
- Cardiac surgery or revascularization
- Unstable angina
- Unstable congestive heart failure
- CHF New York Heart Association Class III or IV
-TIA or significant cerebrovascular disease
- Unstable or previously undiagnosed arrhythmia
o Renal Disease:
- History of unstable or rapidly progressing renal disease
- Conditions of congenital renal glucosuria
- Renal allograft
o Hepatic Diseases:
- Significant hepatic disease
o Hematological and Oncological Disease/Conditions:
- History of hemoglobinopathy, with the exception of sickle cell trait or thalassemia minor; or chronic or recurrent hemolysis
- Known immunocompromised status, individuals who have undergone organ transplantation or who are positive for the HIV
- Donation of blood or blood products to a blood bank, blood transfusion, or participation in a clinical study requiring withdrawal of > 400 mL of blood during the 8 weeks prior to the screening visit
- Malignancy within 5 years of the screening visit
- History of bladder cancer
- History of radiation Th to the lower abdomen or pelvis at any time
Physical and Laboratory Test Findings
o AST> 3x ULN
o ALT > 3x ULN
o Serum total bilirubin > 2.0 mg/dL unless exclusively caused by Gilbert’s Syndrome
o CrCl < 60 mL/min as estimated by the Cockcroft-Gault formula, using lab measurements of serum creatinine collected at the screening visit
o Hgb ≤ 11.0 g/dL for men; Hgb ≤ 10.0 g/dL for women
o Positive for hepatitis B surface antigen or anti-hepatitis C virus antibody
o Abnormal Free T4 Note: abnormal TSH value at screening will be further evaluated for free T4. Subjects with abnormal freeT4 values will be excluded. A one-time retest may be allowed after a minimum of 6w following the adjustment of thyroid hormone replacement Th who have had a prior diagnosis of a thyroid disorder and who are currently receiving thyroid replacement therapy
Allergies and Adverse Drug Reaction
o Allergies or contraindication to the contents of DAPA or insulin
- Sex and Reproductive Status
o Women who are pregnant
Other Exclusion Criteria
o Prisoners or subjects who are involuntarily incarcerated
o Subjects who are compulsorily detained for treatment of either a psychiatric or physical illness
o Subjects on a commercial weight loss program with ongoing weight loss, or on an intensive exercise program
o History of bariatric surgery or lap-band procedure within 12m prior to screening
o Replacement or chronic systemic corticosteroid Th, defined as any dose of systemic corticosteroid taken for > 4 w within 3M prior to the Day 1 visit NOTE: Topical or inhaled corticosteroids are allowed
o Any unstable endocrine, psychiatric or rheumatic disorders
o Volume-depleted subjects
o Subject who is found to be unlikely to comply with the protocol, or is unable to correctly self-administer subcutaneous insulin injections and/or manage their insulin pump, or has any severe concurrent medical or psychological condition that may affect the interpretation of efficacy or safety data
o Subject is currently abusing alcohol or other drugs or has done so within the last 6 months prior to the Day 1 visit |
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E.5 End points |
E.5.1 | Primary end point(s) |
The primary endpoint of this study is the change in HbA1c from baseline to Week 24.
For subjects whose insulin dose is up-titrated by more than 25% of insulin prior to randomization, measurements obtained after meeting the above insulin up-titration criteria will be excluded from the primary analysis. Multiple sensitivity analyses, including the sensitivity analyses using data regardless of insulin dose up-titration, will also be performed for the primary efficacy endpoint to assess the robustness of the primary efficacy results. |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
The timepoint will be evaluated on specified visits per schedule of
assessments, please section 5.1 in protocol |
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E.5.2 | Secondary end point(s) |
1. Percent change from baseline to Week 24 in total daily insulin dose
2. Percent change from baseline to Week 24 in body weight
3. Change from baseline to Week 24 in the mean value of 24-hour glucose readings obtained from CGM
4. Change from baseline to Week 24 in mean amplitude of glucose excursion (MAGE) of 24-hour glucose readings obtained from CGM
5. Change from baseline to Week 24 in the percent of 24-hour glucose readings obtained from CGM that falls within the range of > 70 mg/dL and 180 mg/dL
6. Proportion of subjects achieving an HbA1c reduction from baseline to Week 24 ≥ without severe hypoglycemia events. |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
The timepoint will be evaluated on specified visits per schedule of
assessments, please see section 5.1.1 in protocol |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
E.6.7 | Pharmacodynamic | Yes |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | Yes |
E.6.11 | Pharmacogenomic | Yes |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
E.8.1.5 | Parallel group | Yes |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | Yes |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 3 |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 6 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 41 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
Argentina |
Belgium |
Canada |
Chile |
Germany |
Japan |
Netherlands |
Poland |
Russian Federation |
Sweden |
Switzerland |
United Kingdom |
United States |
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E.8.7 | Trial has a data monitoring committee | Yes |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 2 |
E.8.9.1 | In the Member State concerned months | 6 |
E.8.9.1 | In the Member State concerned days | 0 |
E.8.9.2 | In all countries concerned by the trial years | 2 |
E.8.9.2 | In all countries concerned by the trial months | 6 |
E.8.9.2 | In all countries concerned by the trial days | 0 |