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Relacorilant in Patients With Poorly Controlled Type 2 Diabetes and Autonomous Cortisol Secretion

The purpose of this study is to assess the effect and effectiveness of Relacorilant on improving the glucose levels in the blood, thus potentially improving glucose control in patients with hard to control diabetes.

This study involves the use of an investigational drug called Relacorilant. "Investigational" means that the drug has not yet been approved by the U.S. Food & Drug Administration (FDA) for treating "mild hypercortisolism" in patients with diabetes. Cortisol is a "stress hormone". The excess production of cortisol can rise blood sugar (glucose) levels and worsen diabetes. Those disturbances might be corrected by the study medication Relacorilant to improve the state of your diabetes.

This study will evaluate the effects of Relacorilant on glucose control and its safety profile. Although the safety of this drug has been tested in prior human research studies, some side effects may not yet be known.

Studie Overzicht

Toestand

Nog niet aan het werven

Conditie

Interventie / Behandeling

Gedetailleerde beschrijving

The objective of the study is to investigate the mechanisms by which glucocorticoid receptor (GR) antagonism with relacorilant improves glucose homeostasis in patients with difficult-to-control type 2 diabetes (T2D) and confirmed endogenous hypercortisolism.

Each patient serves as their own control to assess the mechanistic nature of the study. Comparisons made between pre- and post-treatment outcomes. This within-subject design allows detailed assessment of metabolic changes in response to treatment.

Studietype

Ingrijpend

Inschrijving (Geschat)

34

Fase

  • Fase 2
  • Fase 1

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studiecontact

Studie Contact Back-up

Studie Locaties

    • Texas
      • San Antonio, Texas, Verenigde Staten, 78229
        • University of Texas Health Science Center at San Antonio
        • Contact:
        • Contact:
      • San Antonio, Texas, Verenigde Staten, 78229-3900
        • Texas Diabetes Institute/UH
        • Contact:
        • Hoofdonderzoeker:
          • Ralph DeFronzo, MD
        • Contact:

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

18 jaar tot 75 jaar (Volwassen, Oudere volwassene)

Accepteert gezonde vrijwilligers

Nee

Geslachten die in aanmerking komen voor studie

Allemaal

Beschrijving

Inclusion Criteria:

  1. Age between 18 and 75 years.

  2. Males or females

  3. HbA1c between 7.5% and 10.5%

  4. Type 2 diabetes with at least one of the following:

    • Taking ≥ 3 glucose-lowering drugs
    • Taking 2 glucose lowering medication and 2 anti-hypertensive drugs.
    • Taking insulin and any other glucose lowering drugs
    • Taking ≥ 2 glucose-lowering drugs and presence of microvascular (retinopathy, nephropathy, neuropathy) or ≥ macrovascular (heart attack, heart failure, peripheral vascular disease, atrial fibrillation) disease
  5. No changes in diabetes medications in the 4 weeks prior to enrollment.

  6. Estimated glomerular filtration rate (eGFR) ≥ 30 ml/min/1.73m².

  7. Blood pressure lower than 170/110 mmHg.

  8. Abnormal dexamethasone suppression test: morning plasma cortisol >1.8 µg/dL with plasma dexamethasone ≥140 ng/dL.

  9. Self-reported stable (within ±6 lbs in the last 3 months) body weight and body mass index (BMI) between 25-40 kg/m².

  10. Negative Glutamic Acid Decarboxylase (GAD) antibody.

  11. Hematocrit ≥ 34%.

  12. Aspartate Aminotransferase (AST) and Alanine Aminotransferase (ALT) ≤ 3× the upper limit of normal.

  13. Female participants of childbearing potential must have a negative pregnancy test and agree to use appropriate contraception throughout the study. (Women who are using hormonal contraceptives will need to agree to use an acceptable method of non-hormonal contraception throughout the study and for ≥6 half-lives after the last dose of assigned treatment (7 days prior to randomization).

Exclusion Criteria:

  1. Diagnosis of type 1 diabetes
  2. New-onset diabetes of less than 1 year duration.
  3. Presence of severe acute medical, psychiatric, or surgical illness.
  4. Use of systemic (oral, IV, intra-articular, or inhaled) or topical glucocorticoids within the past 3 months.
  5. Use of systemic glucocorticoid during the study is prohibited except in the event of medical emergency OR Requires inhaled glucocorticoid use and may require systemic glucocorticoids if their condition deteriorates during the study
  6. Night shift workers (unless able to temporarily change sleep schedule to complete dexamethasone test).
  7. Severe untreated sleep apnea. (Severe untreated sleep apnea, defined as an Apnea-Hypopnea Index (AHI) ≥ 30 events per hour on polysomnography, or a documented clinical diagnosis of severe sleep apnea in patients who are not receiving effective therapy (e.g., CPAP, BiPAP, oral appliance, or surgical treatment).
  8. Excessive alcohol intake: >14 drinks/week for men or >7 drinks/week for women.
  9. Diagnosed with or having treatment plans for Cushing syndrome
  10. Known hypersensitivity to dexamethasone or relacorilant.
  11. Severe, uncontrolled hypertension (>170/110 mmHg) at screening.
  12. Use of another investigational drug within 4 weeks or less than 5 half-lives of the compound, whichever is longer.
  13. Pregnant or lactating women or women of childbearing potential (including all women <50 years old, women whose surgical sterilization was performed <6 months ag; and women who have had a menstrual period in the last 12 months; and women who have a positive pregnancy test before dexamethasone administration.)
  14. Women with a history of unexplained vaginal bleeding, endometrial hyperplasia with atypia or endometrial carcinoma.
  15. Diagnosed with or having treatment plans for Cushing syndrome using any of the following treatments: mifepristone, metyrapone, osilodrostat, ketoconazole, fluconazole, aminoglutethimide, etomidate, octreotide, larazotide, pasireotide, long-acting octreotide or pasireotide.
  16. Uncontrolled thyroid disease (hypo- or hyperthyroidism) prior to first dose of relacorilant as confirmed by TSH outside of normal range (0.4 to 5.0 mIU/L).
  17. Has plans for adrenalectomy or adrenal nodulectomy during the study period.
  18. Taking any co-medications that is disallowed with strong CYP3A inhibitors and cannot undergo dose modifications on coadministration with a strong CYP3A inhibitor
  19. Ongoing use of any strong CYP3A4 inducer

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Primair doel: Behandeling
  • Toewijzing: NVT
  • Interventioneel model: Opdracht voor een enkele groep
  • Masker: Geen (open label)

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Experimenteel: Study Investigational Drug Group

Participants will receive study intervention once daily after screening and dexamethasone suppression test.

A capsule that will be given once daily starting at 100mg and increasing gradually to 400mg once a day.

Andere namen:
  • CORT125134

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
HbA1c (measure of average blood sugar over 3 months) levels
Tijdsspanne: Baseline to 24 weeks

Lab test performed on whole blood hemoglobin to determine the blood sugar level over a 3 month period

Baseline to 24 weeks

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Change in Beta-cell funtion
Tijdsspanne: Baseline to 24 weeks

Disposition index and C-peptide response during OGTT and euglycemic insulin clamp.

Baseline to 24 weeks
Change in total body fat
Tijdsspanne: Baseline to 24 weeks

Measured by DEXA scan

Baseline to 24 weeks
Liver and visceral fat
Tijdsspanne: Baseline to 24 weeks

Measured using MRI PDFF (magnetic resonance imaging-proton density fat fraction)

Baseline to 24 weeks
Liver stiffness
Tijdsspanne: Baseline to 24 weeks

Assessed using Fibroscan

Baseline to 24 weeks
Change in insulin sensitivity
Tijdsspanne: Baseline to 20-24 weeks

Assessed using the Oral glucose tolerance test

Baseline to 20-24 weeks

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

Medewerkers

Onderzoekers

  • Hoofdonderzoeker: Ralph DeFronzo, MD, The University of Texas Health Science Center at San Antonio

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Geschat)

1 december 2026

Primaire voltooiing (Geschat)

15 december 2028

Studie voltooiing (Geschat)

15 december 2029

Studieregistratiedata

Eerst ingediend

3 november 2026

Eerst ingediend dat voldeed aan de QC-criteria

3 november 2026

Eerst geplaatst (Werkelijk)

9 november 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

9 november 2026

Laatste update ingediend die voldeed aan QC-criteria

3 november 2026

Laatst geverifieerd

1 november 2026

Meer informatie

Termen gerelateerd aan deze studie

Andere studie-ID-nummers

  • STUDY00002401

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

JA

Beschrijving IPD-plan

Study participant research data, which is for purposes of statistical analysis and scientific reporting, will be transmitted to and stored at the Diabetes division at UT Health. This will not include the participant's contact or identifying information. Rather, individual participants and their research data will be identified by a unique study identification number.

IPD-tijdsbestek voor delen

After study completion and data analysis

IPD delen Ondersteunend informatietype

  • LEERPROTOCOOL
  • SAP

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Ja

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .