Clinical trial NCT06042140: Cryopreserved Human Umbilical Cord as a Meningeal Patch in Fetoscopic Spina Bifida Repair
Official title: Cryopreserved Human Umbilical Cord as a Meningeal Patch in Fetoscopic Spina Bifida Repair: Single Arm Phase III Trial.
Study type: INTERVENTIONAL
Overall status: RECRUITING
Phase: NA
Conditions: Spina Bifida; Fetus
Myelomeningocele
Myeloschisis
Keywords: Fetoscopic fetal intervention
Human umbilical cord
NEOX Cord 1K
Lead sponsor: The University of Texas Health Science Center, Houston
Sponsor class: OTHER
First posted: 2023-09-18
Enrollment: 100
Sex: FEMALE
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: NA
Intervention model: SINGLE_GROUP
Primary purpose: TREATMENT

Brief summary: The objective is to test the efficacy of a laparotomy-assisted fetoscopic surgical approach to cover spina bifida spinal cord developmental defects using cryopreserved human umbilical cords (NEOX Cord 1K®) as a meningeal and skin patch.


Eligibility criteria: Inclusion Criteria:

Maternal Inclusion Criteria:

1. Singleton pregnancy
2. Gestational age at screening is 19 to 25 5/7 weeks and gestational age at surgery is 22 to 25 6/7 weeks
3. Maternal age: 18 years and older
4. Body mass index ≤45 kg/m2 (pre-pregnancy)
5. No preterm birth risk factors (short cervix \<20 mm or a history of previous preterm delivery)
6. No previous uterine incision in the active uterine segment
7. Willing to undergo an open fetal repair if the fetoscopic approach is unsuccessful

Fetal Inclusion Criteria:

1. Spina bifida defect between T1 to S1 vertebral levels
2. Chiari II malformation
3. No evidence of kyphosis (curved spine)
4. No major life-threatening fetal anomaly unrelated to spina bifida
5. Normal karyotype, or a normal chromosomal microarray analysis (CMA), or a CMA with variants of unknown significance \[fluorescence in situ hybridization (FISH) acceptable if ≥ 24 weeks\].

Exclusion Criteria:

Maternal Exclusion Criteria:

1. Non-resident of the United States
2. Multifetal pregnancy
3. Poorly controlled insulin-dependent pregestational diabetes
4. Poorly controlled A2 diabetes mellitus (A2DM) insulin-dependent diabetes
5. Current or planned cerclage or documented history of an incompetent cervix
6. Placenta previa or placental abruption
7. Short cervix of \< 20 mm
8. Obesity as defined by a body mass index of \> 45 kg/m2
9. Previous spontaneous singleton delivery prior to 37 weeks
10. Maternal-fetal Rh isoimmunization, Kell sensitization, or a history of neonatal alloimmune thrombocytopenia
11. HIV or Hepatitis-B positive status
12. Known Hepatitis-C positivity
13. Uterine anomaly such as large or multiple fibroids or a mullerian duct abnormality that is diagnosed via imaging prior to surgery, which that are unavoidable during surgery
14. Other medical conditions which are contraindication to surgery or general anesthesia
15. Patient does not have a support person
16. Inability to comply with the travel and follow-up requirements of the trial
17. Patient does not meet psychosocial standardized assessment criteria
18. Participation in this or another intervention study that influences maternal and fetal morbidity and mortality
19. Maternal hypertension
20. Zika virus positivity
21. Allergy/history of drug reaction to Amphotericin B

Fetal exclusion criteria:

1. Major fetal anomaly not related to spina bifida
2. Kyphosis in the fetus of 30 degrees or more
3. Ventriculomegaly greater than 15 mm and no movements noted at hip and knee joints

Primary outcomes:
measure: Number of participants that can ambulate independently by walking at least 10 steps
timeFrame: 30-36 months after delivery
Secondary outcomes:
measure: Number of participants with lower extremity motor and sensory levels exceeding the anatomical level of the lesion by ≥ 2 segments
timeFrame: 30-36 months after delivery
Other outcomes:
Locations:
city: Houston
country: United States
facility: The University of Texas Health Science Center at Houston
state: Texas
Study officials:
affiliation: The University of Texas Health Science Center, Houston
name: Ramesha Papanna, MD, MPH
role: PRINCIPAL_INVESTIGATOR
References: