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OpenTrials
Completed

NCT Number: NCT05405556

Sotagliflozin Safety and Tolerability Among Renal Transplant Recipients

This is an investigator-initiated, randomized controlled trial in adult KTRs (N=50) with stable allograft function to assess: 1) the reversibility of the expected acute changes in eGFR with sotagliflozin (donated by Lexicon); 2) proportion of patients completing the protocol according to different eGFR reporting strategies (using a predefined algorithm to manage the expected pharmacological effect of sotagliflozin on eGFR); 3) safety and tolerability of sotagliflozin.

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Key information

Conditions

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2

Primary location

Brigham and Women's

Boston, Massachusetts, 02115, United States

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Adults ≥18 years
  • Recipients of kidney transplant with stable eGFR*
  • eGFR-creatinine (CKD-EPI 2021) ≥25 mL/min/1.73 m2
  • Informed consent
  • Stable eGFR will be ascertained by careful chart review establishing that the patient's current graft has been functioning for at least 12 months post-transplantation, patients have not been treated for acute rejection within the prior 3 months, and a creatinine-based eGFR is stable (two consecutive measurements separated by at least 28 days within 5 mL/min/1.73 m2) and ≥25 mL/min/1.73 m2.

Exclusion criteria

  • Recurrent urinary tract infections (>2 episodes/year or antibiotic prophylaxis)
  • Biopsy-proven acute rejection within 12 weeks
  • Screening serum potassium >5.5 mmol/L
  • Uncontrolled hypertension (systolic blood pressure >180/100 mmHg)
  • New York Heart Association (NYHA) Class IV HF
  • Myocardial infarction, unstable angina, revascularization procedure (e.g., stent or bypass graft surgery), or cerebrovascular accident within 12 weeks
  • History of diabetic ketoacidosis
  • Type 1 Diabetes Mellitus
  • Hereditary glucose-galactose malabsorption or primary renal glucosuria
  • Liver disease (e.g., acute hepatitis, chronic active hepatitis, cirrhosis); Alanine aminotransferase (ALT) levels >2.0 times the upper limit of normal (ULN) or total bilirubin >1.5 times the ULN, unless consistent with Gilbert's disease
  • Malignancy within 5 years (exceptions: squamous and basal cell carcinomas of the skin and carcinoma of the cervix in situ, or a malignancy that in the opinion of the investigator is considered cured with minimal risk of recurrence)
  • Human immunodeficiency virus antibody positive
  • Major surgery within 12 weeks
  • Atraumatic amputation within past 12 months of screening, or an active skin ulcer, osteomyelitis, gangrene, or critical ischemia of the lower extremity within 6 months of screening
  • Combination use of ACEi and ARB
  • Current use of an SGLT2 inhibitor (within 12 weeks prior to randomization)
  • Known allergies, hypersensitivity, or intolerance to SGLT2i or its excipients
  • Digoxin plasma level >1.2 ng/mL
  • Clofibrate, fenofibrate, dronedarone, or ranolazine treatment that has not been at a stable dose in the 30 days prior to screening or randomization, or a dose adjustment is expected
  • Received an active investigational drug (including vaccines) other than a placebo agent, or used an investigational medical device within 12 weeks before Day 1/baseline
  • Pregnant or breast-feeding or planning to become pregnant or breast-feed during the study
  • Women of childbearing potential not willing to use a highly-effective method(s) of birth control, or who are unwilling or unable to be tested for pregnancy
  • Any condition that in the opinion of the investigator would make participation not in the best interest of the subject

Treatment and study plan

eGFR reporting

Diagnostic Test

To test the proportion of patients successfully completing the protocol according to different eGFR reporting strategies, randomization in a 1:1 fashion at the patient level (n=50) will occur as follows:

  • only study-related eGFR values >25% below baseline will be reported to patients and providers
  • all study-related eGFR will be provided to patients and providers

Primary outcomes

  1. Reversibility of eGFR changes

    Time frame: 16 weeks total

    Following 12 weeks of open-label drug treatment, participants will stop drug and be followed for a further four weeks (16 weeks total). Reversibility will be assessed as the proportion of patients who return to baseline eGFR (+/- 10%) by the end of the 4-week off-treatment period.

Secondary outcomes

  1. Proportion of patients successfully completing the full treatment protocol, according to randomized groups

    Time frame: 16 weeks total

    Following 12 weeks of open-label drug treatment, participants will stop drug and be followed for a further four weeks. The proportion of patients completing the full 16 weeks will be compared according to randomized groups.

Other outcomes

  1. Safety Assessments

    Time frame: 4 weeks

    • Acute changes in eGFR (baseline to 4 weeks)
  2. Safety Assessments

    Time frame: 12 weeks

    • Longer-term changes in eGFR (baseline to 12 weeks and 4 weeks to 12 weeks)
  3. Safety Assessments

    Time frame: Weeks 12-16 (off-drug)

    • Reversibility of changes in eGFR (12 to 16 weeks - after drug discontinuation)
  4. Safety Assessments

    Time frame: 12 weeks

    • Acute Kidney Injury (>50% increase in serum creatinine/40% decline in eGFR within one week), which will be assessed throughout the on-drug period of 12 weeks
  5. Safety Assessments

    Time frame: 12 weeks

    • All adverse events (AEs)
  6. Safety Assessments

    Time frame: 12 weeks

    • All serious adverse events (SAEs)
  7. Safety Assessments

    Time frame: 12 weeks

    • Diarrhea
  8. Safety Assessments

    Time frame: 12 weeks

    • Infection requiring treatment with anti-microbials (including urogenital infection and urinary tract infections)
  9. Safety Assessments

    Time frame: 12 weeks

    • Severe hypoglycemia (event that requires assistance of another person to actively administer carbohydrates, glucagon, or take other corrective actions)
  10. Safety Assessments

    Time frame: 12 weeks

    • Diabetic ketoacidosis
  11. Safety Assessments

    Time frame: 12 weeks

    • Hyperkalemia (>5.5 mmol/L)
  12. Safety Assessments

    Time frame: 12 weeks

    • Hypotension (symptomatic SBP <90 mmHg or hypotension requiring adjustment in blood pressure medications or treatment in an emergency or hospitalized setting)
  13. Tolerability Assessments

    Time frame: 12 weeks

    • Proportion of participants able to complete the full 12 weeks of treatment, according to randomized arm
  14. Tolerability Assessments

    Time frame: 12 weeks

    • Study medication discontinuation rates
  15. Tolerability Assessments

    Time frame: 12 weeks

    • KDQOL-36 questionnaire

Sponsors and collaborators

Lead sponsor

Martina McGrath, MD

Other

Registry information

Acronym: START

Important dates

Study start
2022
Primary completion
2024
Study completion
2024
First posted
Jun 6, 2022
Registry last updated
Feb 5, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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