Clinical trial • Phase IV • Neurology

AUTOLOGOUS CD34+ ENRICHED CELL FRACTION THAT CONTAINS CD34+ CELLS TRANSDUCED WITH RETROVIRAL VECTOR THAT ENCODES FOR THE HUMAN ADA CDNA SEQUENCE for Ischemic stroke

Phase IV trial of AUTOLOGOUS CD34+ ENRICHED CELL FRACTION THAT CONTAINS CD34+ CELLS TRANSDUCED WITH RETROVIRAL VECTOR THAT ENCODES FOR THE HUMAN ADA CDNA…

Overview

Trial Therapeutic Area
Neurology
Trial Disease
Ischemic stroke
Trial Stage
Phase IV
Drug Modality
Cell therapy

Key dates

Initial CTIS Submission Date
30-01-2025
First CTIS Authorization Date
30-01-2025

Trial design

Randomised, open-label, sham control (sham procedure); comparison of administration timing arms: cd34+ cells administered at 7±2 days versus 20±5 days after ischemic stroke Phase IV trial across 1 site in Portugal.

Randomised
Yes
Open Label
Yes
Comparator
Sham control (sham procedure); comparison of administration timing arms: CD34+ cells administered at 7±2 days versus 20±5 days after ischemic stroke
Target Sample Size
30
Trial Duration For Participant
90

Eligibility

Recruits 30 Vulnerable population is not selected. The protocol states: "In the event of incapacitated subjects, informed consent will be sought from a legally acceptable representative.".

Pregnancy Exclusion
Have known pregnancy. Females of childbearing potential will be screened at baseline with urine pregnancy test and positive results will be excluded (the choice of excluding pregnancies is due to the relative contra-indication to MRI in these patients)
Vulnerable Population
Vulnerable population is not selected. The protocol states: "In the event of incapacitated subjects, informed consent will be sought from a legally acceptable representative."

Inclusion criteria

  • {"criterion_text":"- Age 18-80 years\n- Have suffered an acute hemispheric ischemic stroke attributable to injury within the territory supplied by the Middle Cerebral Artery (MCA)\n- Symptomatic arterial territory is recanalyzed at the time of randomization\n- Onset of an acute ischemic stroke that can have full clinical, imagiological and bone marrow collection within 7 days after the onset of symptoms. Onset is defined as the time that the subject was last seen in a normal state, or bedtime for unwitnessed strokes occurring during sleep\n- Have readily accessible peripheral venous access blood sampling\n- Have the ability to understand the requirements of the study and be willing to provide written informed consent, as evidenced by signature on an informed consent document (which has been submitted and approved by the local Ethical Committee),and agree to perform the required assessments. In the event of incapacitated subjects, informed consent will be sought from a legally acceptable representative\n- NIHSS of at least 6 at the time of study inclusion"}

Exclusion criteria

  • {"criterion_text":"- Patients found delirious, comatose, demented or having any mental impairment other than the neurological deficits related to the index stroke that in the investigator’s opinion renders the subject incapable to participate in the study\n- Non compliance of portuguese national law 12/2009 of march 26th (including but not limited to donor laboratorial analysis not compliant with HIV 1 and 2 (anti-HIV-1,2); hepatitis B (HBsAg; anti-HBc); hepatitisC (anti-HCV-Ab); syphilis and Mycoplasm\n- Hematological causes of stroke\n- Arterial dissection as cause of stroke or complication of previous angiography\n- Known defect of clotting or platelet function\n- Presence of high-grade (>70%) internal carotid artery stenosis or occlusion ipsilateral to the current stroke\n- Have inflammatory disease at baseline (chronic systemic inflammatory disease active at the time of inclusion or acute inflammatory disease such as an infection)\n- Have active malignancy, or recent surgery (within the previous 3 months)\n- Have premorbid neurological deficits and functional limitations assessed by a premorbid Modified Rankin Scale (mRS) score >2\n- Have severe co-existing diseases that may interfere with the conduct of the study, irrespective of stroke outcome\n- Have known pregnancy. Females of childbearing potential will be screened at baseline with urine pregnancy test and positive results will be excluded (the choice of excluding pregnancies is due to the relative contra-indication to MRI in these patients)\n- Contra-indication to MRI\n- Allergy to contrast agents"}

Endpoints

Primary endpoints

  • {"endpoint_text":"- Infarct volume at three months after ischemic stroke\n- Volume de enfarte aos três meses após AVC isquémico","definition_or_measurement_approach":"Measured as infarct volume at three months by imaging (imaging outcome; MRI contraindication is listed among exclusions)"}

Secondary endpoints

  • {"endpoint_text":"- Functional outcome: modified Rankin Scale (mRS), Stroke Impact Scale (SIS)","definition_or_measurement_approach":"Measured using modified Rankin Scale (mRS) and Stroke Impact Scale (SIS)"}
  • {"endpoint_text":"- Cognitive performance: Montreal Cognitive Assessment scale (MoCA)","definition_or_measurement_approach":"Measured using Montreal Cognitive Assessment (MoCA)"}
  • {"endpoint_text":"- Functional Independence and performance : Barthel Scale; Upper limb Capacity - Stroke Upper Limb Capacity Scale – SULCS;\tEvaluation of gait speed (TEST 10 METERS); Evaluation of temporospacial gait (GAIT RIte speed)","definition_or_measurement_approach":"Measured using Barthel Scale, SULCS for upper limb capacity, 10-meter walk test for gait speed and GAITRite system for temporospatial gait metrics"}
  • {"endpoint_text":"- Depression -\tHospital Anxiety and Depression Scale- (HADS Scale)","definition_or_measurement_approach":"Measured using Hospital Anxiety and Depression Scale (HADS)"}
  • {"endpoint_text":"- Qualitiy of life assessment - EuroQol Scale( EQ-5D)","definition_or_measurement_approach":"Measured using EuroQol EQ-5D"}
  • {"endpoint_text":"- Deglutition: Teste Rápido de Identificação da Disfagia (TRIDIS); Functional Oral Intake de Identificação da Disfagia (FOIS)","definition_or_measurement_approach":"Measured using TRIDIS and FOIS swallowing/deglutition assessments"}
  • {"endpoint_text":"- Aphasia: Bateria de Avaliação de Afasia de Lisboa - BAAL; The Aphasia Rapid Test (ART)","definition_or_measurement_approach":"Measured using BAAL and Aphasia Rapid Test (ART)"}

Recruitment

Planned Sample Size
30
Recruitment Window Months
12
Consent Approach
Written informed consent is required from the participant, documented by signature on an informed consent form submitted to and approved by the local Ethical Committee. If a subject is incapacitated, informed consent will be sought from a legally acceptable representative. A subject information and informed consent form document is listed (Portuguese language document present).

Geography

Total Number Of Sites
1
Total Number Of Participants
30

Portugal

Earliest CTIS Part Ii Submission Date
27-01-2025
Latest Decision Or Authorization Date
30-01-2025
Processing Time Days
3
Number Of Sites
1
Number Of Participants
30

Sites

Site Name
Unidade Local De Saude De Coimbra E.P.E.
Department Name
Centro Hospitalar e Universitário de Coimbra, EPE
Principal Investigator Name
João Sargento Freitas
Principal Investigator Email
jsargentof@hotmail.com
Contact Person Name
João Sargento Freitas
Contact Person Email
jsargentof@hotmail.com
Number Of Participants
30

Sponsor

Primary sponsor

Full Name
Unidade Local De Saude De Coimbra E.P.E.
Organisation Type
Hospital/Clinic/Other health care facility
Country Of Registered Address
Portugal

Investigational products

Investigational Product Name
Strimvelis 1-10 x 106 cells/mL dispersion for infusion
Active Substance
AUTOLOGOUS CD34+ ENRICHED CELL FRACTION THAT CONTAINS CD34+ CELLS TRANSDUCED WITH RETROVIRAL VECTOR THAT ENCODES FOR THE HUMAN ADA CDNA SEQUENCE
Modality
Cell therapy
Routes Of Administration
Intravenous infusion
Route
Intravenous infusion
Authorisation Status
Marketing authorisation EU/1/16/1097/001
Maximum Dose
1000000 U unit(s)

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