Intranasal Stem Cells to Treat Perinatal Brain Injury to Combat Cerebral Palsy

NCT07831746 | Not Yet Recruiting Phase 2 DMC

• 3 other identifiers: 24U-19332025-521506-17-012025
• Study Type: interventional
• Target: 162
• Locations: 0 countries
• Sites: N/A

Brief Summary

Hypoxic-ischemic brain injury (HIBI) is a leading cause of death and lifelong disability in near-term and term infants, most often caused by perinatal arterial ischemic stroke (PAIS, incidence approximately 1:5000 live births) or perinatal asphyxia (PA, incidence 1-2:1000 live births). No treatment currently exists to repair or limit HIBI, and many affected infants go on to develop cerebral palsy, cognitive impairment, epilepsy, or visual or hearing deficits. Intranasally administered bone marrow-derived mesenchymal stromal cells (IN-MSC) are a candidate regenerative therapy for HIBI. Preclinical studies show that IN-MSC migrate to injured brain regions, dampen neuroinflammation, and stimulate endogenous neural repair, improving both structural and functional outcomes in animal models of HIBI. A first-in-human phase I trial (PASSIoN) in 10 neonates with PAIS showed that intranasal MSC administration was feasible and well tolerated, with no serious adverse events and promising early efficacy signals at 2-year follow-up. iSTOP-CP is a phase II, single-center (UMC Utrecht, the Netherlands), double-blind, randomized, placebo-controlled trial evaluating whether IN-MSC therapy can prevent or reduce motor and other disabilities in infants with MRI-confirmed HIBI due to PAIS or PA. Eligible infants are born at 35.0 weeks of gestation or later, have HIBI confirmed on brain MRI or MRS in predefined brain regions predictive of poor outcome, and are diagnosed with PAIS or PA, with or without prior therapeutic hypothermia. A total of 162 infants will be randomized 1:1 to IN-MSC or matching placebo, stratified by the cause of HIBI and, within the PAIS group, by stroke territory. Infants with suspected chromosomal, metabolic, or congenital central nervous system anomalies, intracranial hemorrhage as the main injury, or contraindications to intranasal administration are excluded, as are infants for whom the clinical team has decided to withdraw intensive care. Participants receive a single intranasal dose of bone marrow-derived MSC or a visually indistinguishable placebo within 7 days after birth. Participants are followed for 24 months, with neurodevelopmental follow-up visits at 3-4, 6, 9-12, and 24 months of age and a brain MRI at 52 weeks postmenstrual age. The primary endpoint is the motor composite score of the Dutch version of the Bayley Scales of Infant and Toddler Development, 4th edition (Bayley-IV-NL), assessed at 24 months corrected age. Key secondary endpoints include cognitive development, the incidence of sensorineural disability, neuroregenerative imaging biomarkers, safety, health-related quality of life for infants and their parents, and the cost-effectiveness of IN-MSC treatment, evaluated through a health technology assessment.

Conditions

HIE - Hypoxic - Ischemic Encephalopathy; Perinatal Arterial Ischemic Stroke; Perinatal Asphyxia; Hypoxic-Ischemic Brain Injury; PAIS

Outcome Measures

Primary Outcomes (1)

• Bayley Scales of Infant and Toddler Development 4th Edition (Bayley-IV-NL)

  The motor composite score of the Bayley Scales of Infant and Toddler Development, Fourth Edition, Dutch version (Bayley-IV-NL), assessed at 24 months of age. The motor composite combines the Fine Motor and Gross Motor subdomains into a standard score with a mean of 100 and standard deviation of 15, with higher scores indicating better motor development (a score below 70 indicates substantial developmental delay).

  The assessment will be done when the participant is around 24 months of age.

Secondary Outcomes (6)

• The cognitive composite score of the Bayley-IV-NL.

  The assessment will be done when the participant is around 24 months of age.

• Sensorineural disability at 2 years

  These components will be assessed when the participant is around 24 months of age.

• Incidence of Treatment-Related Adverse Events Following Intranasal MSC Administration

  Until the participant is 24 months of age.

• Neuroregenerative effects seen on MRI

  At approximately 3 months post-term equivalent age

• Impact on Health Related Quality of Life (HRQoL)

  At 3, 9-12 and 24 months.

Other Outcomes (1)

• Pharmacodynamic biomarker assessments

  Bloodsamples will be collected at: 1. Baseline (before administration), 2. 48 hours after administration and if possible 3. If participant is still in the hospital and blood can be drawn with regular samplin, at 96 hours after administration

Study Arms (2)

Placebo

PLACEBO COMPARATOR

Administration fluid (=physiological saline (0.9% NaCl; RVG 051680) with 10% Human Serum Albumin (RVG 103594))

Drug: Placebo

MSC, marrow

EXPERIMENTAL

Bone-marrow derived mesenchymal stromal cells (BM-MSCs) intranasally administered once within 7 days after birth.

Drug: MSC, marrow

Interventions

MSC, marrow DRUG

Allogeneic BM-MSCs

Also known as: mesenchymal stromal cells, MSC

MSC, marrow

Placebo DRUG

Placebo is intranasally administered within 7 days.

Placebo

Eligibility Criteria

• Age: 0 Days - 8 Days
• Sex: all
• Healthy Volunteers: No
• Age Groups: Child (0-17)

You may qualify if:

• Neonates with a gestational age ≥35.0 weeks at birth
• Diagnosed with HIBI on MRI, caused either by PAIS (ORPHA 439175) or PA (ORPHA 137577) diagnosis (will be randomized separately)
• o PAIS: a neurologic condition characterized by focal cerebral ischemia and infarction following blockage of a brain artery with impairment of blood supply and oxygenation of brain tissue, clinically characterized by seizures (clinical or subclinical), respiratory difficulties, or both (unilateral or bilateral).
• o PA: defined as at least one out of the following: 5-min Apgar score ≤ 5
• Resuscitation
• Mechanical ventilation following resuscitation ≥ 10 minutes after birth
• pH \<7.0, BE \<-16 mmol/L, or lactate \> 10.0 mmol/L in umbilical cord blood sample, or in arterial, venous or capillary blood gas sample obtained within 1 hour after birth
• Showing signs of hypoxic-ischemic injury in one or more of the following predefined brain areas (indicated by DWI restriction and/or abnormal ADC values and/or 1H-MRS lactate/N-acetyl aspartate (NAA) and/or NAA/Choline ratio abnormalities):
• Central gray matter (basal ganglia and/or thalami), and/or
• Posterior limb of the internal capsule (PLIC), and/or
• Cerebral peduncles, and/or
• White matter injury with corticospinal tract (CST) involvement, and/or
• Rolandic cortex
• Written informed consent from custodial parent(s)

You may not qualify if:

• Suspicion of chromosomal anomaly, metabolic disorder, genetic syndrome, congenital central nervous system (CNS) malformation, congenital CNS infection and main injury intracranial haemorrhage.
• Contraindications for intranasal administration of medication, nasal obstruction caused by e.g. choanal atresia, nasal septal abnormalities, nasal trauma, epistaxis, excessive nasal mucus or blood, and intranasal obstructive damage.

Sponsors & Collaborators

• UMC Utrecht: lead

MeSH Terms

Conditions

Hypoxia-Ischemia, Brain

Condition Hierarchy (Ancestors)

Brain Ischemia; Cerebrovascular Disorders; Brain Diseases; Central Nervous System Diseases; Nervous System Diseases; Hypoxia, Brain; Vascular Diseases; Cardiovascular Diseases; Hypoxia; Signs and Symptoms, Respiratory; Signs and Symptoms; Pathological Conditions, Signs and Symptoms

Study Design

• Study Type: interventional
• Phase: phase 2
• Allocation: RANDOMIZED
• Masking: QUADRUPLE
• Who Masked: PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: professor dr.

Study Record Dates

• First Submitted: September 11, 2026
• First Posted: September 21, 2026
• Study Start (Estimated): April 1, 2027
• Primary Completion (Estimated): September 1, 2032
• Study Completion (Estimated): September 1, 2032
• Last Updated: September 21, 2026

Record last verified: 2026-09