Questa pagina è stata tradotta automaticamente e l'accuratezza della traduzione non è garantita. Si prega di fare riferimento al Versione inglese per un testo di partenza.

CC-101 (f/k/a NR1) Neural Stem Cell Transplantation for Adults With Chronic Ischemic Stroke (suNR1se II)

12 luglio 2026 aggiornato da: Clarion Cells, Inc.

A Phase 2b, Prospective, Randomized, Multi-Center, Double-Blinded, Controlled Trial to Assess the Efficacy and Safety of Stereotactic Intracerebral Transplantation of Allogeneic Neural Stem Cells CC-101 (f/k/a NR1) in Adults With Chronic Ischemic Subcortical ± Cortical Stroke

The suNR1se II Study is a Phase 2b randomized, controlled, multi-center clinical trial evaluating the efficacy and safety of stereotactic intracerebral administration of CC-101 (f/k/a NR1), an investigational allogeneic neural stem cell therapy, in adults with chronic ischemic stroke and persistent motor impairment. The study is designed to assess whether administration of CC-101 immediately adjacent to the region of prior stroke injury may improve motor function recovery compared with a sham surgical control procedure. The study will also evaluate the role of short-term anti-rejection therapy with tacrolimus in subjects receiving CC-101. Approximately 36 participants will be randomized in a 1:1:1 ration to receive CC-101 plus tacrolimus, sham surgery (no CC-101) plus tacrolimus-matched placebo, or CC-101 plus tacrolimus-matched placebo. Participants will be followed for safety and functional outcomes for at least 12 months following the study procedure.

Panoramica dello studio

Stato

Non ancora reclutamento

Condizioni

Intervento / Trattamento

Descrizione dettagliata

CC-101 (f/k/a NR1) is an investigational allogeneic neural stem cell therapy being developed to support endogenous repair and regenerative mechanisms within the brain following ischemic injury and infarction (i.e., ischemic stroke). Rather than directly replacing stroke-damaged and dead brain cells and tissue, CC-101 is intended to promote recovery through local production of biologically active factors that support neurogenesis (i.e., new brain cell production), angiogenesis (i.e., new blood vessel formation), plasticity (i.e., rewiring of synaptic connections), extracellular matrix remodeling (i.e., change materials around brain cells), and modulation of inflammation. The suNR1se II Study is a prospective, randomized, controlled Phase 2b study designed to evaluate the efficacy and safety of stereotactic intracerebral administration of CC-101 in adults with chronic ischemic subcortical ischemic stroke, with or without adjacent cortical involvement. Participants will be randomized equally to one of three study arms: 1) CC-101 plus tacrolimus (Experimental Arm A), 2) sham surgery plus placebo (Control Arm B), or 3) CC-101 plus placebo (Exploratory Arm C). The inclusion of sham surgery control (Arm B) and tacrolimus-matched placebo anti-rejection therapy (Arms B & C) is intended to support rigorous evaluation of CC-101 treatment effect and further characterization of the role of tacrolimus in allogeneic neural stem cell therapy for chronic ischemic stroke. The primary efficacy assessment will evaluate changes in arm and leg motor functions between baseline and 12 months following intervention. Safety assessments will include adverse events, serious adverse events, neurosurgical complications, imaging findings, laboratory assessments, hospitalization events, and mortality.

Tipo di studio

Interventistico

Iscrizione (Stimato)

36

Fase

  • Fase 2

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

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

KEY INCLUSION CRITERIA:

  1. Confirmed diagnosis of completed ischemic subcortical stroke in the middle cerebral artery (MCA) distribution with or without cortical involvement based on magnetic resonance imaging (MRI) and/or computed tomography (CT) scan(s).
  2. Index stroke occurred ≥ 6 months and ≤ 84 months prior to providing informed consent.
  3. Age ≥ 18 years and ≤ 75 years at the time of providing informed consent.
  4. Chronic motor neurological deficit due to the index stroke.
  5. Total Fugl-Meyer Motor Scale (FMMS) > 25 and ≤ 75 at baseline.
  6. Modified Rankin Score (mRS) of 2-4 at baseline.
  7. Subjects taking oral anti-spasticity agent (such as tizanidine hydrochloride or baclofen) must be on a stable dose for 90 days prior to a Screening/Baseline visit.

KEY EXCLUSION CRITERIA:

  1. Stroke lesion <1 cm3 or >100 cm3 as measured by MRI.
  2. Previous history of symptomatic stroke(s) with incomplete motor recovery (NOT including index stroke).
  3. Complete or near complete lack of right and/or left upper extremity and/or right and/or left lower extremity movement as defined by the MRC Scale for Muscle Strength scores.
  4. History of any neuromuscular, rheumatologic, autoimmune, orthopedic, or other disease or condition that limits motor function.
  5. Acute myocardial infarction (heart attack), acute pulmonary embolism (blood clot to the lungs), acute proximal deep vein thrombosis (blood clot in the leg or arm), acute peripheral arterial occlusion, or any other type of acute blood clotting episode within six (6) months of study screening.
  6. Intracoronary and/or other intra-arterial stent placement within 12 months of study Screening/Baseline visits requiring uninterrupted anticoagulant and/or anti-platelet therapy.
  7. Contracture involving a shoulder, elbow, wrist, finger, hip, knee, and/or ankle.
  8. Any contraindication to stereotactic brain surgery.
  9. Presence of serum anti-Human Leukocyte Antigen (HLA) Class I and/or Class II antibodies to donor NR1 cells with a Luminex assay value greater than the larger of the central lab's reference ULN or 3,000 Maximum Fluorescence Intensity.

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: Quadruplicare

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Sperimentale: CC-101 (f/k/a NR1) + oral Tacrolimus [ARM A]
Participants will receive stereotactic intracerebral administration of investigational CC-101 allogeneic neural stem cells on Day 0 plus twice-daily oral tacrolimus anti-rejection therapy from Day -2 to Day +60.
Biologico: CC-101 (f/k/a NR1) Intracerebral Transplantation
Investigational allogeneic neural stem cell product administered stereotactically via intracerebral injection immediately adjacent to the prior stroke lesion.
Droga: Tacrolimus
Oral tacrolimus or tacrolimus-matched placebo initiated prior to study intervention and continued for approximately 60 days following study intervention per protocol-defined dosing and taper schedule.
Comparatore fittizio: Partial thickness burr hole without any cells + oral Tacrolimus-matched placebo [ARM B]
Participants will undergo a sham surgical control procedure on Day 0 designed to preserve study blinding along with twice-daily oral tacrolimus-matched placebo from Day -2 to Day +60.
Procedura: Sham Surgical Control
Participants will undergo a partial thickness burr hole craniotomy without disruption of the meninges or transplantation of any cells as a means to maintain treatment masking.
Sperimentale: CC-101 (f/k/a NR1) + oral Tacrolimus-matched placebo [ARM C]
Participants will receive stereotactic intracerebral administration of investigational CC-101 allogeneic neural stem cells on Day 0 plus twice-daily oral tacrolimus-matched placebo therapy from Day -2 to Day +60.
Biologico: CC-101 (f/k/a NR1) Intracerebral Transplantation
Investigational allogeneic neural stem cell product administered stereotactically via intracerebral injection immediately adjacent to the prior stroke lesion.

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Total Fugl-Meyer Motor Scale (FMMS) Score on Day +365 Following Neurosurgical Intervention (CC-101 transplantation or sham surgery) on Day 0.
Lasso di tempo: Baseline to Day +365.
The total Fugl-Meyer Motor Scale (FMMS) score (0-100; the larger the better) reflects the sum of the upper extremity (0-66) and lower extremity (0-34) FMMS scores. For each study subject, this clinical assessment of motor function on Day +365 will be compared with the baseline total FMMS score to determine the interval change in motor function.
Baseline to Day +365.

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Total Fugl-Meyer Motor Scale (FMMS) Score on Day +365 Following Neurosurgical Intervention (CC-101 transplantation or sham surgery) on Day 0.
Lasso di tempo: Baseline to Day +365.
Each study subject will be categorized as having an increase in total FMMS score of ≥10 points or an increase of <10 points (including unchanged scores and decreased scores) between baseline assessment and assessment on Day +365 following neurosurgical intervention.
Baseline to Day +365.
Total Fugl-Meyer Motor Scale (FMMS) Score on Day +90 and Day +182 Following Neurosurgical Intervention (CC-101 transplantation or sham surgery) on Day 0.
Lasso di tempo: Baseline to Day +90 and baseline to Day +182
For each study subject, this clinical assessment of motor function on Day +90 and Day +182 will be compared with the baseline total FMMS score to determine the interval change in motor function.
Baseline to Day +90 and baseline to Day +182
Total Fugl-Meyer Motor Scale (FMMS) Score on Day +90 and Day +182 Following Neurosurgical Intervention (CC-101 transplantation or sham surgery) on Day 0.
Lasso di tempo: Baseline to Day +90 and baseline to Day +182.
Each study subject will be categorized as having an increase in total FMMS score of ≥10 points or an increase of <10 points (including unchanged scores and decreased scores) between baseline assessment and assessments on Day +90 and on Day +182 following neurosurgical intervention.
Baseline to Day +90 and baseline to Day +182.
Upper Extremity Motor Function as Assessed by the Action Research Arm Test (ARAT) on Day +365 Following Neurosurgical Intervention (CC-101 transplantation or sham surgery) on Day 0.
Lasso di tempo: Baseline to Day +365.
Each study subject will be categorized as having an increase in ARAT score of ≥5.7 points or an increase of <5.7 points (including unchanged scores and decreased scores) between baseline assessment and assessment on Day +365 following neurosurgical intervention.
Baseline to Day +365.
Barthel Index on Day +90 and Day +182 Following Neurosurgical Intervention (CC-101 transplantation or sham surgery) on Day 0.
Lasso di tempo: Baseline to Day +90 and baseline to Day +182.
For each study subject, this clinical assessment of functional independence on Day +90 and Day +182 will be compared with the baseline Barthel Index to determine the interval change.
Baseline to Day +90 and baseline to Day +182.
Gait Velocity Using the Comfortable Gait Speed Test Measuring 10 Meters of Timed Gait Speed on Day +365 Following Neurosurgical Intervention (CC-101 transplantation or sham surgery) on Day 0..
Lasso di tempo: Baseline to Day +365.
Each study subject will be categorized as having or not having an improvement in gait function by at least one functional level using the 10-meter walk test between baseline assessment and assessment on Day +365 following neurosurgical intervention.
Baseline to Day +365.
Overall Survival on Day +90, Day +182, and Day +365 Following Neurosurgical Intervention (CC-101 transplantation or sham surgery) on Day 0.
Lasso di tempo: Survival rates at Day +90, Day +182, and Day +365.
Subject survival to key assessment milestones will be assessed. Time to all-cause subject death following study Day 0 neurosurgery will be estimated using the product-limit (Kaplan-Meier) method.
Survival rates at Day +90, Day +182, and Day +365.

Collaboratori e investigatori

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

Sponsor

Clarion Cells, Inc.

Investigatori

  • Cattedra di studio: Gary K Steinberg, MD, PhD, Stanford University School of Medicine, Department of Neurosurgery

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 gennaio 2027

Completamento primario (Stimato)

1 gennaio 2029

Completamento dello studio (Stimato)

1 gennaio 2029

Date di iscrizione allo studio

Primo inviato

12 luglio 2026

Primo inviato che soddisfa i criteri di controllo qualità

12 luglio 2026

Primo Inserito (Effettivo)

17 luglio 2026

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

17 luglio 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

12 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

  • NR1-03

Piano per i dati dei singoli partecipanti (IPD)

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

INDECISO

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

Sì

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 .

Prove cliniche su Ictus ischemico cronico

Prove cliniche su CC-101 (f/k/a NR1) Intracerebral Transplantation

Cerca prove simili

Sponsor e collaboratori

Condizioni mediche

Interventi farmacologici

CROs by country

CROs in Denmark

Condizioni

Malattie rare

Interventi farmacologici

Supplementi dietetici

Sponsor / Collaboratori

Sedi

3
Sottoscrivi