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Safety and Dose-Response of Bletilla Formosana in Prediabetic Subjects

14 luglio 2026 aggiornato da: YUAN-CHIEH YEH, Chang Gung Memorial Hospital

A Phase I/II Randomized, Double-Blind, Placebo-Controlled Pilot Trial Evaluating the Safety and Dose-Response of Bletilla Formosana in Prediabetic Subjects

This study evaluates the safety and preliminary efficacy of Bletilla formosana (BF), a traditional herbal medicine, in adults with prediabetes. Prediabetes is a high-risk condition where blood sugar levels are elevated, often leading to type 2 diabetes. While lifestyle changes are the standard treatment, researchers are exploring herbal supplements as a complementary way to support metabolic health. Preclinical research has shown that BF possesses anti-inflammatory properties and may help regulate blood glucose. Participants in this study will be randomly assigned to receive either a high dose of BF, a low dose of BF, or a placebo (an inactive substance) for 12 weeks. The total study duration is approximately 24 weeks, involving four clinic visits for blood tests and safety monitoring to see how BF affects blood sugar markers and inflammation.

Panoramica dello studio

Stato

Non ancora reclutamento

Condizioni

Intervento / Trattamento

Descrizione dettagliata

This is a single-center, Phase I/II, randomized, double-blind, placebo-controlled, parallel-design trial. The primary goal is to translate robust preclinical findings-where BF extract was shown to inhibit neutrophil-driven inflammation and improve glycemic parameters in animal models-into clinical evidence.

A total of 94 prediabetic subjects (defined by FPG 100-125 mg/dL or HbA1c 5.7%-6.4%) will be enrolled.

Participants will be randomized in a 2:2:1 ratio into one of the following three arms:

High-dose group: 3g Bletilla formosana powder daily. Low-dose group: 1.5g Bletilla formosana powder plus 1.5g placebo daily. Placebo group: 3g inactive placebo powder daily.

The study consists of three distinct phases:

Screening Phase: Up to 2 weeks for eligibility confirmation. Treatment Phase: 12 weeks of oral administration. Follow-up Phase: 12 weeks post-treatment to evaluate sustained efficacy and safety outcomes.

Phase I objectives focus on safety and tolerability, with adverse events (AEs) and serious adverse events (SAEs) graded according to CTCAE v5.0.

Phase II objectives explore preliminary efficacy through changes in fasting plasma glucose (FPG), HbA1c, and HOMA-IR.

Secondary endpoints include assessment of inflammatory biomarkers (TNF-α, IL-6, and CRP) and lipid profiles.

Clinical assessments, including 12-lead ECG and comprehensive laboratory testing, are scheduled at Screening, Week 6, Week 12 (end of treatment), and Week 24 (end of study).

Tipo di studio

Interventistico

Iscrizione (Stimato)

94

Fase

  • Fase 2
  • Fase 1

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Contatto studio

Backup dei contatti dello studio

Luoghi di studio

  • Taiwan
      • Keelung, Taiwan, 204
        • Keelung Chang Gung Memorial Hospital
        • Contatto:
        • Contatto:
        • Investigatore principale:
          • Yuan-Chieh Yeh, MD
      • Taoyuan, Taiwan, 333
        • Taoyuan Chang Gung Memorial Hospital
        • Contatto:
        • Contatto:
      • Taoyuan, Taiwan, 333
        • Linkou Chang Gung Memorial Hospital
        • Contatto:
        • Contatto:
        • Investigatore principale:
          • Hsing-Yu Chen, MD

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

  • Adulto
  • Adulto più anziano

Accetta volontari sani

No

Descrizione

Inclusion Criteria:

  1. Adults aged 30-70 years.
  2. Prediabetes defined by any of the following:
  3. Fasting Plasma Glucose (FPG) of 100-125 mg/dL, or
  4. Glycated hemoglobin (HbA1c) of 5.7%-6.4%.
  5. Willingness to provide written informed consent and comply with study procedures.

Exclusion Criteria:

  1. Established type 1 or type 2 diabetes mellitus, or recent use of oral antidiabetic agents or insulin (within 3 months).
  2. Abnormal liver function, defined as Alanine aminotransferase (ALT) or Aspartate aminotransferase (AST) exceeding 2-fold the upper reference limit (≥2 × ULN) at screening.
  3. Abnormal renal function, defined as serum creatinine (Cr) >1.5 mg/dL or Estimated Glomerular Filtration Rate (eGFR) <60 mL/min/1.73 m².
  4. Gastrointestinal disorders that may affect drug absorption, such as gastrostomy, enterostomy, severe chronic diarrhea, or malabsorption syndrome.
  5. Severe comorbidities within the past 6 months, including major stroke, myocardial infarction, major trauma, or major surgery.
  6. Recent use of medications (within 1 month) that may significantly alter blood glucose or lipids, such as systemic corticosteroids or non-stable doses of lipid-lowering agents.
  7. Malignant tumor under active treatment, or immunodeficiency/autoimmune disorders requiring immunosuppressive therapy.
  8. Psychiatric disorders or cognitive impairment that may affect protocol compliance.
  9. Active use of other investigational drugs within 3 months prior to screening.
  10. Pregnancy or lactation.

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Trattamento
  • Assegnazione: Randomizzato
  • Modello interventistico: Assegnazione parallela
  • Mascheramento: Triplicare

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Sperimentale: High-dose Bletilla formosana (BF)
Participants receive 3g of Bletilla formosana powder daily for 12 weeks. To maintain blinding, the total dose is divided into two 1.5g sachets (one in the morning and one in the evening).
Droga: Bletilla formosana (BF) powder
A traditional Chinese medicinal herb (Taiwanese ground orchid). The raw material is derived from the approved botanical species and medicinal part listed in the Taiwan Herbal Pharmacopoeia.
Sperimentale: Low-dose Bletilla formosana (BF)
Participants receive 1.5g of Bletilla formosana powder and 1.5g of placebo powder daily for 12 weeks. To maintain blinding, this is administered as one active sachet and one matching placebo sachet (one in the morning and one in the evening).
Droga: Bletilla formosana (BF) powder
A traditional Chinese medicinal herb (Taiwanese ground orchid). The raw material is derived from the approved botanical species and medicinal part listed in the Taiwan Herbal Pharmacopoeia.
Altro: Placebo
An inactive powder matching the appearance and dosage form of the BF powder, consisting of starch and caramel coloring.
Comparatore placebo: Placebo
Participants receive 3g of inactive placebo powder daily for 12 weeks. To maintain blinding, this is administered as two matching placebo sachets (one in the morning and one in the evening).
Altro: Placebo
An inactive powder matching the appearance and dosage form of the BF powder, consisting of starch and caramel coloring.

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Number of Participants with at Least One Treatment-Emergent Adverse Event (AE)
Lasso di tempo: From baseline to Week 24.
Incidence of all adverse events (AEs) graded by CTCAE v5.0.
From baseline to Week 24.
Number of Participants with Serious Adverse Events (SAEs)
Lasso di tempo: From baseline to Week 24
Number of participants experiencing life-threatening or fatal events according to ICH-GCP definitions.
From baseline to Week 24
Change from Baseline in Fasting Plasma Glucose (FPG) (mg/dL)
Lasso di tempo: Baseline, Week 6, Week 12, and Week 24.
Change in fasting blood sugar levels to assess the preliminary glycemic efficacy of Bletilla formosana.
Baseline, Week 6, Week 12, and Week 24.
Change from Baseline in Glycated Hemoglobin (HbA1c) (%)
Lasso di tempo: Baseline, Week 6, Week 12, and Week 24.
Assessment of average blood glucose control over time.
Baseline, Week 6, Week 12, and Week 24.
Change from Baseline in Homeostatic Model Assessment for Insulin Resistance (HOMA-IR)
Lasso di tempo: Baseline, Week 6, Week 12, and Week 24.
Calculated using fasting insulin and glucose levels to assess changes in insulin sensitivity.
Baseline, Week 6, Week 12, and Week 24.

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Change from Baseline in Tumor Necrosis Factor-alpha (TNF-α) (pg/mL)
Lasso di tempo: Baseline, Week 6, Week 12, and Week 24.
To evaluate the anti-inflammatory effects of Bletilla formosana.
Baseline, Week 6, Week 12, and Week 24.
Change from Baseline in Interleukin-6 (IL-6) (pg/mL)
Lasso di tempo: Baseline, Week 6, Week 12, and Week 24.
To evaluate the anti-inflammatory effects of Bletilla formosana.
Baseline, Week 6, Week 12, and Week 24.
Change from Baseline in C-reactive protein (CRP) (mg/dL)
Lasso di tempo: Baseline, Week 6, Week 12, and Week 24.
To evaluate the anti-inflammatory effects of Bletilla formosana.
Baseline, Week 6, Week 12, and Week 24.
Change from Baseline in Total Cholesterol (mg/dL)
Lasso di tempo: Baseline, Week 6, Week 12, and Week 24.
Assessment of lipid profiles using standard laboratory methods
Baseline, Week 6, Week 12, and Week 24.
Change from Baseline in High-Density Lipoprotein (HDL) (mg/dL)
Lasso di tempo: Baseline, Week 6, Week 12, and Week 24.
Assessment of lipid profiles using standard laboratory methods.
Baseline, Week 6, Week 12, and Week 24.
Change from Baseline in Low-Density Lipoprotein (LDL) (mg/dL)
Lasso di tempo: Baseline, Week 6, Week 12, and Week 24.
Assessment of lipid profiles using standard laboratory methods.
Baseline, Week 6, Week 12, and Week 24.
Change from Baseline in Triglycerides (TG) (mg/dL)
Lasso di tempo: Baseline, Week 6, Week 12, and Week 24.
Assessment of lipid profiles using standard laboratory methods.
Baseline, Week 6, Week 12, and Week 24.

Altre misure di risultato

Misura del risultato
Misura Descrizione
Lasso di tempo
Change from Baseline in Alanine Aminotransferase (ALT) (U/L)
Lasso di tempo: Baseline, Week 6, Week 12, and Week 24.
Assessment of clinical laboratory safety tests to monitor hepatic, renal, and hematologic function.
Baseline, Week 6, Week 12, and Week 24.
Change from Baseline in Aspartate Aminotransferase (AST) (U/L)
Lasso di tempo: Baseline, Week 6, Week 12, and Week 24.
Assessment of clinical laboratory safety tests to monitor hepatic, renal, and hematologic function.
Baseline, Week 6, Week 12, and Week 24.
Change from Baseline in Total Bilirubin (mg/dL)
Lasso di tempo: Baseline, Week 6, Week 12, and Week 24.
Assessment of clinical laboratory safety tests to monitor hepatic, renal, and hematologic function.
Baseline, Week 6, Week 12, and Week 24.
Change from Baseline in Blood Urea Nitrogen (BUN) (mg/dL)
Lasso di tempo: Baseline, Week 6, Week 12, and Week 24.
Assessment of clinical laboratory safety tests to monitor hepatic, renal, and hematologic function.
Baseline, Week 6, Week 12, and Week 24.
Change from Baseline in Serum Creatinine (mg/dL)
Lasso di tempo: Baseline, Week 6, Week 12, and Week 24.
Assessment of clinical laboratory safety tests to monitor hepatic, renal, and hematologic function.
Baseline, Week 6, Week 12, and Week 24.
Change from Baseline in White Blood Cell Count (WBC) (10^3/μL)
Lasso di tempo: Baseline, Week 6, Week 12, and Week 24.
Assessment of clinical laboratory safety tests to monitor hepatic, renal, and hematologic function.
Baseline, Week 6, Week 12, and Week 24.
Change from Baseline in Hemoglobin (Hb) (g/dL)
Lasso di tempo: Baseline, Week 6, Week 12, and Week 24.
Assessment of clinical laboratory safety tests to monitor hepatic, renal, and hematologic function.
Baseline, Week 6, Week 12, and Week 24.
Change from Baseline in Platelet Count (10^3/μL)
Lasso di tempo: Baseline, Week 6, Week 12, and Week 24.
Assessment of clinical laboratory safety tests to monitor hepatic, renal, and hematologic function.
Baseline, Week 6, Week 12, and Week 24.

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

Chang Gung Memorial Hospital

Collaboratori

National Science and Technology Council

Investigatori

  • Investigatore principale: Yuan-Chieh Yeh, MD, Chang Gung Memorial Hospital

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Stimato)

1 luglio 2026

Completamento primario (Stimato)

1 luglio 2027

Completamento dello studio (Stimato)

1 agosto 2027

Date di iscrizione allo studio

Primo inviato

23 giugno 2026

Primo inviato che soddisfa i criteri di controllo qualità

14 luglio 2026

Primo Inserito (Effettivo)

15 luglio 2026

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

15 luglio 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

14 luglio 2026

Ultimo verificato

1 luglio 2026

Maggiori informazioni

Termini relativi a questo studio

Parole chiave

Termini MeSH pertinenti aggiuntivi

Altri numeri di identificazione dello studio

  • 202500720A3C6002
  • NSTC 114-2321-B-255-001 (Altro numero di sovvenzione/finanziamento: National Science and Technology Council)

Piano per i dati dei singoli partecipanti (IPD)

Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?

NO

Descrizione del piano IPD

The study team does not have a plan to share individual participant data at this time to maintain participant confidentiality as stated in the informed consent.

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

No

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .

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