Pilot Trial of Fetoscopic Endoluminal Tracheal Occlusion (FETO) in Severe Left Congenital Diaphragmatic Hernia (CDH)

  • End date
    Apr 16, 2028
  • participants needed
  • sponsor
    Hanmin Lee
Updated on 16 May 2022
Accepts healthy volunteers


Despite advances in prenatal diagnosis and postnatal therapies, including ECMO (Extracorporeal Membrane Oxygenation), inhaled nitric oxide therapy, and ventilator strategies that minimize ventilator-induced lung injury, morbidity and mortality rates for babies with severe CDH remain high. The rationale for fetal therapy in severe CDH is to promote adequate lung growth for neonatal survival. Prenatal tracheal occlusion obstructs the normal egress of lung fluid during pulmonary development leading to increased lung tissue stretch, increased cell proliferation, and accelerated lung growth. The investigator's goal with this pilot study is to study the feasibility of implementing Fetoscopic Endoluminal Tracheal Occlusion (FETO) therapy in the most severe group of fetuses with left CDH (LHR O/E < 25%).

Condition Congenital Diaphragmatic Hernia
Treatment Fetoscopic Endoluminal Tracheal Occlusion Surgery
Clinical Study IdentifierNCT04583644
SponsorHanmin Lee
Last Modified on16 May 2022


Yes No Not Sure

Inclusion Criteria

Patient < 18 years of age
Multi-fetal pregnancy
Rubber latex allergy
Preterm labor, cervix shortened (< 15 mm at enrollment or within 24 hours of FETO balloon insertion procedure) or uterine anomaly strongly predisposing to preterm labor, placenta previa
Family does not meet psychosocial criteria. Reasons for exclusion include: insufficient social support, inability to understand requirements of the study, inability to reside in or near San Francisco
Right sided CDH or bilateral CDH, isolated left sided with LHR O/E < 25% (measured at 180 to 295 weeks) as determined by ultrasound
Additional fetal anomaly by ultrasound, MRI, or echocardiogram at the fetal treatment center. Exclude chromosomal abnormalities, associated anomalies recognized to alter survival prognosis (ie. CDH and congenital heart disease) or presence of an underlying genetic syndrome (ie. Fryns). No cases will be removed post hoc if abnormalities are discovered in the course of post-operative monitoring
Maternal contraindication to fetoscopic surgery or severe maternal medical condition in pregnancy
History of incompetent cervix with or without cerclage
Placental abnormalities (previa, abruption, accrete) known at time of enrollment
Maternal-fetal Rh isoimmunization, Kell sensitization or neonatal alloimmune thrombocytopenia affecting the current pregnancy
Maternal HIV, Hepatitis-B, Hepatitis-C status positive because of the increased risk of transmission to the fetus during maternal-fetal surgery. If the patient's HIV or Hepatitis status is unknown, the patient must be tested and found to have negative results before enrollment
Uterine anomaly such as large or multiple fibroids or mullerian duct abnormality
There is no safe or technically feasible fetoscopic approach to balloon placement
Participation in another intervention study that influences maternal and fetal morbidity and mortality or participation in this trial in a previous pregnancy
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