Amnioinfusion for Fetal Renal Failure

Anhydramnios, Bilateral Renal Agenesis, Fetal Renal Anomaly, Lower Urinary Tract Obstructive Syndrome, Lung Hypoplasia, Multicystic Dysplastic Kidney, Multicystic Renal Dysplasia, Bilateral, Polycystic Kidney Disease, Potter Syndrome

Fetal Renal Failure, Kidney Disease, MCDK, PCKD

The goal of this clinical trial is to learn if serial amnioinfusions can improve the chances of survival for fetuses with severe kidney problems that cause low amniotic fluid (anhydramnios). Low amniotic fluid can affect lung development and may lead to serious health issues for the fetus. The main questions this study aims to answer are: * Can serial amnioinfusion increase the chances of survival for these fetuses? * Does this procedure improve chances of survival until dialysis and/or kidney transplant? Participants will: * Receive regular amnioinfusions, which is a procedure that adds fluid to the amniotic cavity. * Undergo monitoring to check the effects on the fetus and mother. This study will help researchers understand if amnioinfusion is a useful treatment for fetal kidney problems and may provide valuable information for similar cases in the future.

Fetal renal failure (FRF) is a severe and life-threatening condition caused by congenital abnormalities or inherited kidney diseases. In the womb, when the kidneys fail to function properly, this leads to a condition called anhydramnios-a complete lack of amniotic fluid. Amniotic fluid is essential for the fetus's lung development, particularly during the canalicular phase of pulmonary development, which occurs between 16 and 28 weeks of gestation. Without sufficient amniotic fluid, the lungs cannot develop properly, resulting in a condition known as pulmonary hypoplasia. Severe hypoplasia has previously been described as almost always fatal, typically leading to neonatal death shortly after birth. In recent years, promising advances in fetal therapies have opened new doors for treating conditions that were once considered untreatable. One such intervention involves serial amnioinfusion, a procedure where sterile saline or another isotonic fluid is injected into the amniotic sac to restore fluid levels. Early studies, including the RAFT trial (Renal Anhydramnios Fetal Therapy), have demonstrated that this approach may improve survival rates by promoting lung development in fetuses with FRF. Building upon these findings, this study seeks to further evaluate the safety and effectiveness of serial amnioinfusion in improving neonatal outcomes for families facing this diagnosis. This study will enroll approximately 60 pregnant individuals carrying singleton pregnancies complicated by FRF and anhydramnios. Participants will be divided into two groups: an intervention group, which will receive serial amnioinfusion procedures as deemed appropriate by the study doctor, and a control group, which will not undergo interventions and will receive comfort care for their pregnancies. The primary goals of the study are to evaluate maternal safety, assess fetal survival to dialysis, and determine survival to kidney transplant eligibility. The amnioinfusion procedures will be performed at the Fetal Care Center by a team of experts in fetal procedures. To ensure patient safety, the study includes a rigorous monitoring plan to track any potential adverse events in real time. Data from imaging studies (e.g., ultrasound, echocardiogram, MRI) and laboratory biomarkers will be collected to evaluate fetal and maternal responses to the treatment. While the study focuses on improving outcomes for individual patients, it also has broader implications for science and society. By systematically analyzing the benefits and risks of serial amnioinfusion, this research could help refine treatment protocols and set the stage for new standards of care for FRF. For the families involved, participation in this study offers the possibility of improved survival for their children, with potential eligibility for life-saving kidney transplants in the future. This study represents a critical step toward addressing a condition that has long been considered untreatable. Through collaboration, innovation, and rigorous research, the team aims to provide hope for families affected by FRF.

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