A British woman has become the first UK patient to undergo pioneering in-utero surgery to correct a rare birth defect in her unborn son, marking the third confirmed case worldwide where doctors successfully returned a baby’s intestines to the abdomen before birth.
On 26 weeks into her pregnancy, Maisie Savage of London underwent the procedure at Texas Children’s Hospital as part of a clinical trial in collaboration with Great Ormond Street Hospital (GOSH) in London and KU Leuven in Belgium. Surgeons used keyhole techniques to partially expose Savage’s womb, drain amniotic fluid, and replace it with carbon dioxide to create space. They then gently pushed Theo’s intestines back into his abdomen before he was carried to full term and born naturally in Texas in February. Theo, now five months old, is reported to be thriving.
The surgery targeted complex gastroschisis, a condition where the intestines develop outside the body due to improper umbilical development. Without intervention, severe cases can require months of neonatal intensive care, multiple surgeries, and long-term nutritional support. According to medical experts, up to one in 10 babies with complex gastroschisis do not survive, even with advanced care.
The Procedure and Clinical Context
The operation was conducted as part of the first-of-its-kind clinical trial, which builds on similar prenatal techniques used for conditions like spina bifida. Surgeons operated between 19 and 26 weeks of gestation, a window considered optimal for fetal intervention. Dr. Michael Belfort, who led the surgical team, described the outcome as “just remarkable.”
Theo’s parents, both teachers aged 29 (Maisie) and 36 (Josh French), were initially referred by GOSH after a 20-week scan revealed the condition. They described the diagnosis as “incredibly scary” and faced a “huge decision” to travel to the U.S. for the procedure. Savage told the BBC, “He’s a little miracle.”
Medical Significance and Outcomes
Gastroschisis affects approximately one in 3,000 UK births annually. While some cases are mild and resolve with standard surgical correction after birth, complex gastroschisis—like Theo’s—carries higher risks of complications, including intestinal damage, infection, and prolonged hospitalization. The prenatal intervention aims to reduce these risks by preventing further damage to exposed organs.
Theo’s case is the third documented success of this experimental approach, following two prior cases in the trial. His parents have not disclosed whether he will require additional surgeries, but medical teams report his recovery is progressing well. The trial continues to enroll eligible patients to assess long-term outcomes.
Parental Experience and Support Systems
Savage and French emphasized the emotional and logistical challenges of the process. They traveled to Texas immediately after receiving the diagnosis, navigating travel arrangements, medical referrals, and the psychological strain of a high-risk pregnancy. Savage described the decision to proceed with surgery as life-altering, while French highlighted the initial shock of the 20-week scan.
The couple has since shared their story to raise awareness about rare birth defects and the potential of prenatal interventions. They did not specify whether they would pursue further medical consultations in the UK, but medical teams at GOSH and Texas Children’s Hospital continue to monitor Theo’s progress.
Broader Implications for Prenatal Care
The success of Theo’s surgery adds to a growing body of evidence supporting fetal intervention for non-lethal but high-risk conditions. While prenatal surgery is not new—particularly for spina bifida—its application to gastroschisis remains experimental. Researchers hope the trial will establish clearer guidelines for identifying candidates, timing interventions, and measuring success.
Critics of prenatal surgery point to risks such as premature labor, infection, or fetal distress, though these are weighed against the potential benefits for severe cases. The trial’s organizers have not released detailed risk assessments, but participating hospitals describe the procedure as low-risk when performed by experienced teams.
Theo’s case will be closely studied as part of the trial’s ongoing evaluation. If further cases show consistent benefits, the technique could become a standard option for parents facing similar diagnoses.