NCT06435156

Brief Summary

People with type 1 diabetes sometimes develop heart failure which can cause symptoms like breathlessness, tiredness or ankle swelling, reduced quality of life and lead to being admitted to hospital or suffering potential fatal consequences. This trial is investigating if a tablet called sotagliflozin, can improve quality of life in people with type 1 diabetes and heart failure. In addition, this trial will also assess the safety and tolerability of sotagliflozin in this population. In previous trials that included people with type 2 diabetes and heart failure sotagliflozin was shown to improve patients' symptoms of heart failure, quality of life and reduce the chance of people with heart failure being admitted to hospital or dying. However, people with type 1 diabetes and heart failure were not included in these trials meaning that it is not known if these benefits also apply to this population. This trial aims to recruit 320 people with type 1 diabetes and heart failure symptoms in multiple sites in the United Kingdom (UK). This trial will compare the health and quality of life of participants who take sotagliflozin tablets with participants who take placebo tablets, which is a dummy tablet that looks the same as sotagliflozin. Participants will be randomly allocated to one of two groups (i.e. one taking sotagliflozin and the other the placebo) and both the medical team and participants will not know in which group each participant is until the end of the study. Participants will be in the trial for approximately 6 months and will be given sotagliflozin or placebo tablets to take 1 per day for 4 months. The trial is expected to run for a total of 26 months.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
320

participants targeted

Target at P75+ for phase_2

Timeline
19mo left

Started Jan 2025

Typical duration for phase_2

Geographic Reach
1 country

15 active sites

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress46%
Jan 2025Oct 2027

First Submitted

Initial submission to the registry

May 16, 2024

Completed
14 days until next milestone

First Posted

Study publicly available on registry

May 30, 2024

Completed
8 months until next milestone

Study Start

First participant enrolled

January 28, 2025

Completed
2.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 31, 2027

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

October 31, 2027

Last Updated

August 21, 2025

Status Verified

February 1, 2025

Enrollment Period

2.8 years

First QC Date

May 16, 2024

Last Update Submit

August 15, 2025

Conditions

Keywords

Type 1 Diabetesheart failureSodium-glucose Cotransporter-2 (SGLT2) Inhibitorssotagliflozin

Outcome Measures

Primary Outcomes (1)

  • Change in Kansas City Cardiomyopathy Questionnaire (KCCQ) clinical summary score

    To investigate the effect of sotagliflozin 200mg once daily in addition to standard of care on quality of life (QoL). KCCQ clinical summary score (no unit, ranges from 0 to 100 with higher scores reflecting better health status).

    From baseline to week 16

Secondary Outcomes (11)

  • Change in KCCQ clinical summary score

    From baseline to week 4

  • Change in KCCQ overall summary score

    From baseline to weeks 4 and 16

  • Proportion of participants with a ≥5, ≥10 and ≥15 point increase in KCCQ clinical and overall summary scores

    From baseline to week 16

  • Change in Diabetes Treatment Satisfaction Questionnaire Status (DTSQs) and Change (DTSQc)

    From baseline to week 16

  • Change in EQ-5D-5L questionnaire score

    From baseline to week 16

  • +6 more secondary outcomes

Other Outcomes (16)

  • Change in New York Heart Association (NYHA) class

    From baseline to weeks 16 and 20

  • Change in daily loop diuretic dose

    From baseline to week 16

  • Change in systolic and diastolic blood pressure.

    From baseline to week 16

  • +13 more other outcomes

Study Arms (2)

Sotagliflozin

EXPERIMENTAL

Sotagliflozin oral tablet, 200mg once per day for 16 weeks.

Drug: Sotagliflozin

Placebo

PLACEBO COMPARATOR

Placebo oral tablet, 200mg once per day for 16 weeks.

Drug: Placebo

Interventions

Sodium-glucose Co-transporter inhibitor

Sotagliflozin

Matched placebo

Placebo

Eligibility Criteria

Age18 Years - 84 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Age 18 years to \<85 years.
  • Type 1 diabetes.
  • Insulin dose ≥0.5 units/kg body weight at screening or body mass index (BMI) ≥25kg/m2 at screening
  • Using continuous glucose monitor at screening or willing to use one for the duration of the trial.
  • Diagnosis of heart failure (HF) regardless of left ventricular ejection fraction (LVEF), defined as one or more of the following:
  • Previous HF hospitalisation where HF was documented as the primary cause of hospitalisation and there was a requirement for loop diuretics
  • Impaired left ventricular (LV) function (i.e. LVEF \<50% by any imaging modality) at any time
  • Preserved LV systolic function (LVEF ≥50%) with left atrial enlargement (2-dimensional echocardiographic measurement of left atrial width ≥3.8cm or left atrial length ≥5.0 cm or left atrial area ≥20cm2 or left atrial volume index \>29 ml/m2) within the last 24 months.
  • Preserved LV systolic function (LVEF ≥50%) with left ventricular hypertrophy (2-dimensional echocardiographic measurement of end-diastolic interventricular septal diameter ≥1.2cm or end-diastolic left ventricular posterior wall diameter ≥1.2cm) within the last 24 months.
  • Preserved LV systolic function (LVEF ≥50%) with echocardiographic diastolic dysfunction (septal e' \<7cm/sec or lateral e' \<10cm/sec or average E/e' ≥15) within the last 24 months.
  • New York Heart Association Class II-IV at screening.
  • Elevated N-terminal pro-B-type natriuretic peptide (≥250 ng/L for those in sinus rhythm, ≥400 ng/L if in atrial fibrillation) or B-type natriuretic peptide (≥75 ng/L for those in sinus rhythm, ≥100 ng/L if in atrial fibrillation) within 12 months of screening.
  • Kansas City Cardiomyopathy clinical summary score \<85 at screening.

You may not qualify if:

  • Cardiac surgery (coronary artery bypass graft or valve replacement), type 1 myocardial infarction, implantation of cardiac device (including biventricular pacemaker) or cardiac mechanical support implantation within 1 month of screening, or between screening and randomisation, or planned during the trial.
  • End-stage heart failure requiring left ventricular assist devices, intra-aortic balloon pump, or any type of mechanical support at the time of randomisation.
  • Documented primary severe valvular heart disease, amyloidosis or hypertrophic cardiomyopathy as principal cause of heart failure as judged by the local investigator.
  • Respiratory disease thought to be the primary cause of dyspnoea as assessed by the local investigator.
  • Chronic kidney disease with estimated glomerular filtration rate \<25ml/min/1.73m2 at screening.
  • Moderate or severe hepatic impairment (e.g. Child-Pugh B and C) at screening as judged by the local investigator.
  • Use of sotagliflozin or any sodium-glucose co-transporter-2 inhibitors (SGLT2i) within 1 month of screening or between screening and randomisation.
  • Previous hypersensitivity/intolerance to SGLT2i.
  • Presence of malignancy with expected life expectancy \<1 year at screening.
  • Severe hypoglycaemia (hospitalisation for hypoglycaemia or episode requiring external assistance to treat) within 1 month prior to screening or between screening and randomisation.
  • One episode of diabetic ketoacidosis or nonketotic hyperosmolar state within 1 month of screening or between screening and randomisation, or ≥2 diabetic ketoacidosis or nonketotic hyperosmolar state events within 6 months of screening.
  • Pregnant or lactating women.
  • Women of childbearing age or male partners of women of childbearing age and not practicing an acceptable method of birth control
  • On a ketogenic diet.
  • Unwilling/unable to share glucose and ketone monitoring data.
  • +2 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (15)

Aberdeen Royal Infirmary

Aberdeen, AB25 2ZN, United Kingdom

RECRUITING

Addenbrookes Hospital

Cambridge, CB2 0QQ, United Kingdom

RECRUITING

Ninewells Hospital

Dundee, DD1 9SY, United Kingdom

RECRUITING

Royal Infirmary of Edinburgh

Edinburgh, EH16 4SA, United Kingdom

RECRUITING

Glasgow Royal Infirmary, Glasgow Clinical Research Facility

Glasgow, G31 2ER, United Kingdom

RECRUITING

Leicester General Hospital

Leicester, LE5 4PW, United Kingdom

RECRUITING

Aintree University Hospital

Liverpool, L9 7AL, United Kingdom

RECRUITING

Prince Philip Hospital

Llanelli, SA14 8QF, United Kingdom

RECRUITING

Guy's Hospital

London, SE1 9RT, United Kingdom

RECRUITING

St George's University Hospitals NHS Foundation Trust

London, SW17 0QT, United Kingdom

RECRUITING

Manchester Royal Infirmary Hospital

Manchester, M13 9WL, United Kingdom

RECRUITING

Wythenshawe Hospital

Manchester, M23 9LT, United Kingdom

RECRUITING

North Manchester General Hospital

Manchester, M8 5RB, United Kingdom

RECRUITING

Northern General Hospital

Sheffield, S5 7AU, United Kingdom

RECRUITING

Moorgreen Hospital

Southampton, SO30 3JB, United Kingdom

RECRUITING

MeSH Terms

Conditions

Diabetes Mellitus, Type 1Heart Failure

Interventions

(2S,3R,4R,5S,6R)-2-(4-chloro-3-(4-ethoxybenzyl)phenyl)-6-(methylthio)tetrahydro-2H-pyran-3,4,5-triol

Condition Hierarchy (Ancestors)

Diabetes MellitusGlucose Metabolism DisordersMetabolic DiseasesNutritional and Metabolic DiseasesEndocrine System DiseasesAutoimmune DiseasesImmune System DiseasesHeart DiseasesCardiovascular Diseases

Study Officials

  • Ify Mordi, MBChB, MD

    University of Dundee

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Ify Mordi, MBChB, MD

CONTACT

Study Design

Study Type
interventional
Phase
phase 2
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Clinical Senior Lecturer and Honorary Consultant Cardiologist

Study Record Dates

First Submitted

May 16, 2024

First Posted

May 30, 2024

Study Start

January 28, 2025

Primary Completion (Estimated)

October 31, 2027

Study Completion (Estimated)

October 31, 2027

Last Updated

August 21, 2025

Record last verified: 2025-02

Data Sharing

IPD Sharing
Will not share

Datasets of pseudo-anonymised IPD generated/analysed during the current study will be available upon request from the Chief Investigator (CI) Dr Ify Mordi (i.mordi@dundee.ac.uk) at the end of the trial (i.e. when all endpoints/outcomes have been met, key analyses are complete and results published in peer-reviewed scientific journals). Data will remain available for at least 25 years. Data will only be released for legitimate secondary research purposes, where the CI agrees that the proposed use has scientific value and will be carried out to a high standard (in terms of scientific rigour, information governance and security), and that there are resources available to satisfy the request. Data will only be released in line with participants' consent, all applicable laws relating to data protection and confidentiality, and any existing contractual obligations. No individual participant data will be released before an appropriate agreement is in place setting out the conditions of release. The agreement will govern data retention, usually stipulating that data recipients must delete their copy of the released data at the end of the planned project.

Locations