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Restoring Awareness

30. Oktober 2026 aktualisiert von: Casa Colina Hospital and Centers for Healthcare

Restoring Awareness in Prolonged Disorders of Consciousness With Drug Recycling

The study will evaluate the safety and preliminary efficacy of saxagliptin in treating prolonged DoC through a randomized, placebo-controlled, double-blind, delayed start Phase IIA trial. Twenty-four (24) patients with prolonged DOC (≥28 days post-injury) will be enrolled at Rehabilitation Hopsital's Center for Disorders of Consciousness (C³DoC).

Twelve patients will be randomized to receive placebo for 15 days followed by saxagliptin 5 mg for 15 days (Delayed Start Group), and 12 will receive saxagliptin 5 mg for the full 30 days (Full Treatment Group). Patients will be under continuous medical monitoring within C³DoC throughout their approximately 4-week admission. Validated behavioral biomarkers of consciousness (CRS-R) will be collected by blinded certified assessors at baseline (days -7 and 0), day 15, and day 30, with portable EEG-based AI biomarker assessments to corroborate behavioral findings. Follow-up DRS-PI assessments will be conducted at days 60 and 90.

A pre-planned adaptive dose escalation design will be employed. The first 6 patients (sentinel cohort) will receive 5 mg (or placebo per delayed start). Upon cohort completion, the independent Safety Monitoring Board (SMB), chaired by a Medical doctor , will review unblinded safety data. If IRB and FDA IND Exemption approval is obtained for dose escalation, and excellent safety criteria are met (zero SAEs, no Grade 2+ AEs, zero hypoglycemia), the SMB will direct escalation to 10 mg for subsequent patients (up to 400 mg/day has been shown to be well-tolerated in humans); otherwise, 5 mg continues. Investigators and patients remain blinded throughout.

Studienübersicht

Status

Noch keine Rekrutierung

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

When individuals suffer a severe brain injury and do not completely regain their previous functional abilities, frequently develop a Disorder of Consciousness (DoC). This refers to a collection of interconnected conditions characterized by reduced awareness and alertness, such as the Vegetative State (VS) and the Minimally Conscious State(MCS). When these conditions persist over time, there are currently no authorized pharmacological interventions available to enhance their recovery. Only one medication, amantadine, has Class II evidence for DOC, offering modest benefit with no group difference versus placebo at trial end . Eight drugs, which are indicated for other conditions, have previously shown some promise in improving alertness and awareness in some DoC patients. These drugs are amantadine, apomorphine, baclofen, bromocriptine, desipramine, levodopa, methylphenidate, and zolpidem. In order to identify new potential drugs for DoC, investigators trained a deep neural network to predict the efficacy of these eight drugs, as well as 288 other drugs known to be ineffective (from prior research and patient records), based on their molecular structure. This phenotypic AI screening was trained on both acute coma and prolonged DOC cases. Investigators then used this trained network to predict the efficacy of all other FDA-approved drugs in chronic DoC. This in silico drug screen identified a new, FDA-approved medication with promise in ameliorating chronic DoC: the type 2 diabetes medication saxagliptin. This finding has since been supported by a retrospective study of 4,047 ICU acute coma patients matched by age, sex, Glasgow Coma Scale score, etiology, and glycemic status, in which incretin-based therapies (including DPP-4 inhibitors) yielded significantly higher recovery rates versus non-incretin diabetes medications (P=0.0331), patients without diabetes (P=0.0272), and amantadine-treated patients (P=0.0364) (Toker et al., 2025). Recovery rates with incretin-based drugs were consistent across coma etiologies: TBI (76.5%), stroke (73.7%), and anoxic (74.9%); saxagliptin-treated patients showed 89% recovery. A new preclinical study also demonstrated saxagliptin significantly improved neurobehavioral outcomes and attenuated neuropathologies in severe TBI in non-diabetic rats .

In the present study, investigators propose to evaluate the safety and preliminary efficacy of saxagliptin in treating prolonged DoC through a randomized, placebo-controlled, double-blind, delayed start Phase IIA trial. Twenty-four (24) patients with prolonged DOC (≥28 days post-injury) will be enrolled at Rehabilitation Hospital's Center for Disorders of Consciousness (C³DoC).

Twelve patients will be randomized to receive placebo for 15 days followed by saxagliptin 5 mg for 15 days (Delayed Start Group), and 12 will receive saxagliptin 5 mg for the full 30 days (Full Treatment Group). Patients will be undercontinuous medical monitoring within C³DoC throughout their approximately 4-week admission. Validated behavioral biomarkers of consciousness (CRS-R) will be collected by blinded certified assessors at baseline (days -7 and 0), day 15, and day 30, with portable EEG-based AI biomarker assessments to corroborate behavioral findings. Follow-up DRS-PI assessments will be conducted at days 60 and 90. A pre-planned adaptive dose escalation design will be employed. The first 8 patients (sentinel cohort) will receive 5 mg (or placebo per delayed start). Upon cohort completion, the independent Safety Monitoring Board (SMB),chaired by a Medical Doctor, will review unblinded safety data. If IRB and FDA IND Exemption approval is obtained for dose escalation, and excellent safety criteria are met (zero SAEs, no Grade 2+ AEs, zero hypoglycemia), the SMB will direct escalation to 10 mg for only the remaining 6 patients in the full treatment arm; All 12 Delayed-Start patients will remain at 5 mg during active treatment (up to 400 mg/day has been shown to be well-tolerated in humans); otherwise, 5 mg continues. Investigators and patients remain blinded throughout. No confirmed adverse events of special interest (AESIs), no permanent study-drug discontinuations for safety reasons, completion of treatment and follow-up through Day 44 before escalation review.

Studientyp

Interventionell

Einschreibung (Geschätzt)

24

Phase

  • Phase 2

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienkontakt

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

18 Jahre und älter (Erwachsene, Älterer Erwachsener)

Akzeptiert gesunde Freiwillige

Nein

Studienberechtigte Geschlechter

Alle

Beschreibung

Inclusion Criteria:

  • Any etiology: traumatic brain injury, anoxic brain injury, or vascular (stroke) brain injury.
  • Enrolled at Casa Colina Hospital's Center for Disorders of Consciousness (C³DoC).
  • Legally authorized representative (LAR) available to provide informed consent.
  • Medically stable for participation as determined by the Clinical Co-Investigator (Dr. David Patterson, MD).

Exclusion Criteria:

  • Type I or Type II Diabetes Mellitus.
  • Current use of strong CYP3A4 inhibitors (e.g., ketoconazole, clarithromycin) due to potential saxagliptin exposure increase.
  • Current use of insulin or insulin secretagogues.
  • Heart failure of NYHA Class II-IV, active decompensated heart failure, or hospitalization for heart failure within 12 months before screening. Because NYHA class is defined by symptoms during physical exertion and cannot be assessed in patients with disorders of consciousness, any patient with a documented diagnosis of heart failure is excluded unless the medical record documents NYHA Class I status before the qualifying brain injury and there has been no subsequent heart failure decompensation or hospitalization.
  • Estimated glomerular filtration rate (eGFR) <60 mL/min/1.73 m², calculated from the screening serum creatinine using the CKD-EPI 2021 equation (Inker et al., 2021). Because reduced muscle mass after prolonged immobility can cause creatinine-based eGFR to overestimate renal function, the Clinical Co-Investigator may additionally obtain a cystatin C-based eGFR; a patient is excluded if either estimate is <60 mL/min/1.73 m².
  • Known hypersensitivity to saxagliptin or any DPP-4 inhibitor, or a history of angioedema.
  • History of pancreatitis or bullous pemphigoid.
  • Unstable vital signs, active infections, or recent hospitalizations for acute medical illness.
  • Pregnancy or lactation.
  • Any condition that, in the judgment of the investigator, would make the patient unsuitable for participation.

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Behandlung
  • Zuteilung: Zufällig
  • Interventionsmodell: Parallele Zuordnung
  • Maskierung: Verdreifachen

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: Delayed Start Group

Placebo on days 1-15. Saxagliptin on days 16-30.

Days 16-30- administer 5 mg/day via G-tube

Days 1-30- administer 5 mg/day (or 10 mg/day per adaptive design) via G tube

Experimental: Full Treatment Group

Saxagliptin given on days 1-30.

Days 16-30- administer 5 mg/day via G-tube

Days 1-30- administer 5 mg/day (or 10 mg/day per adaptive design) via G tube

Kein Eingriff: Placebo

See delayed group information. Placebo will be given day 0-15

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Incidence of serious adverse events (SAEs)
Zeitfenster: From days 1-30

Hypoglycemia (<70 mg/dL via continuous glucose monitoring), non-serious AEs (CTCAE v5.0), and discontinuations vs. placebo (first 15 days), and vitals.

From days 1-30
Change in CRS-R total score from baseline to Day 15 (placebo-controlled comparison) and Day 30.
Zeitfenster: Baseline, Days 15 and Days 30

CRS-R assessment divided into 6 subscales Total score ranging from 0-23. Higher scores indicate higher levels of neurological function and consciousness. Higher scores mean a better outcome.

Baseline, Days 15 and Days 30

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
CRS-R subscales
Zeitfenster: Baseline, day 15, day 30

≥2-point increase or diagnostic advancement. DRS is out of 29 points (Scores range from 0 (no disability) to 29 (extreme vegetative state). Higher scores mean a better outcome.

Baseline, day 15, day 30
Portable EEG-based AI biomarker of consciousness level
Zeitfenster: Baseline, days 15, days 30

A framework to decode consciousness level

Baseline, days 15, days 30
DRS-PI
Zeitfenster: Days 60 and Days 90

The DRS-PI (Disability Rating Scale-Postacute Interview) is a standardized interview version of the Disability Rating Scale (DRS) designed for reliable telephone or direct administration with patients or proxy caregivers. Lower DRS-PI better outcome. Lower scores mean a better outcome.

Days 60 and Days 90

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Mitarbeiter

Publikationen und hilfreiche Links

Die Bereitstellung dieser Publikationen erfolgt freiwillig durch die für die Eingabe von Informationen über die Studie verantwortliche Person. Diese können sich auf alles beziehen, was mit dem Studium zu tun hat.

Allgemeine Veröffentlichungen

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Geschätzt)

15. November 2026

Primärer Abschluss (Geschätzt)

30. Oktober 2029

Studienabschluss (Geschätzt)

30. Oktober 2030

Studienanmeldedaten

Zuerst eingereicht

12. Oktober 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

30. Oktober 2026

Zuerst gepostet (Tatsächlich)

5. November 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

5. November 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

30. Oktober 2026

Zuletzt verifiziert

1. Oktober 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • SaxaDOC

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

NEIN

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Ja

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

Produkt, das in den USA hergestellt und aus den USA exportiert wird

Nein

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