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Serial Amnioinfusions as Regenerative Therapy for Pulmonary Hypoplasia

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ClinicalTrials.gov Identifier: NCT03723564
Recruitment Status : Recruiting
First Posted : October 29, 2018
Last Update Posted : April 9, 2019
Sponsor:
Information provided by (Responsible Party):
Rodrigo Ruano M.D., Ph.D, Mayo Clinic

Brief Summary:

Congenital lower urinary tract obstruction (LUTO) is a heterogeneous group of congenital anomalies that lead bladder outlet obstruction. If a complete obstruction is present, the perinatal mortality is estimated to be as high as 90% because of severe pulmonary hypoplasia due to the lack of amniotic fluid. Survivors have significant risk of renal impairment (90%) requiring dialysis or renal transplantation if no fetal intervention is performed.

Renal agenesis is the congenital absence of one or both kidneys due to complete failure of the kidney to form. As many as 33% of fetuses with bilateral renal agenesis are stillborn, and the rest of them die immediately after birth due to severe pulmonary hypoplasia.

The objective of the serial amnioinfusions for fetuses with these conditions will be to reduce the severity of pulmonary hypoplasia (regenerating the lung functionality) and therefore increase the chance that the newborn survives to begin peritoneal dialysis. Although there is initial evidence that serial amnioinfusions are feasible for the pregnant women and the fetuses, there is still a need to have a prospective clinical trial to confirm the hypothesis that serial amnioinfusions could prevent severe pulmonary hypoplasia allowing the newborns with bilateral renal agenesis or severe LUTO to survive to begin peritoneal dialysis.

Therefore, the investigators aim to study the hypothesis that serial amnioinfusions for fetuses with severe LUTO and renal failure and those with bilateral renal agenesis will reduce the severity of pulmonary hypoplasia and therefore increase the chance that the newborn survives to begin peritoneal dialysis.


Condition or disease Intervention/treatment Phase
Renal Failure Congenital Congenital Renal Anomaly Nos Renal Agenesis and Dysgenesis Lower Urinary Tract Obstructive Syndrome Drug: Lactated Ringers Solution for Injection Phase 1

Detailed Description:

All women with fetuses having either severe LUTO with intrauterine renal failure or bilateral renal agenesis that meet the inclusion criteria will be invited to participate in this study. For those patients, the actual standard of care is expectant prenatal management or termination of pregnancy (<22 weeks according to law). This study will offer serial amnioinfusions for patients with LUTO or bilateral renal agenesis. Due to the rarity and complexity of these cases, the investigators expect to enroll a maximum of 5 women with affected fetuses per year. After two years (approximately 10 cases), a review of the data will be completed including all outcomes to determine whether to continue towards the original goal of treating 40 patients (20 mothers with affected fetuses) or to close the study,.

All procedures are anticipated to take place in the Family Birth Center at Mayo Clinic, Rochester. Serial ultrasound-guided amnioinfusion procedures will be performed on fetuses having severe LUTO or bilateral renal agenesis that are diagnosed between 18 0/7-25 6/7 weeks. This procedure will be performed in a sterile fashion within the operating room using the same technique that is routinely used to perform the ultrasound-guided amnioinfusion. Once consented, weekly ultrasound monitoring will be conducted and if the amniotic fluid index (AFI) is determined to be <2 cm, amnioinfusion will proceed. Prior to each infusion, 5mLs of amniotic fluid will be collected to study surrogate markers of lung function (research only). Using a 22-gauge needle, warm sterile lactated ringer solution will be infused into the amniotic cavity until the AFI is equal to 8 cm. Some studies have demonstrated that the composition of the amniotic fluid during second and third trimester is closer to the lactated ringer solution. This procedure will be continued weekly until the fetus reaches 34 weeks, after which only monitoring will occur. If preterm premature rupture of the membranes (PPROM) occurs prior to 34 weeks, no further amnioinfusion procedures will be performed. Patients with PPROM will be managed according to the standardized clinical management. The anticipated length of stay in the hospital after each infusion is approximately 2 days if no uterine contractions are observed.

The prenatal care, delivery and postnatal management of the infant will be conducted according to the standardized clinical care. Delivery will be scheduled at the Mayo Clinic Family Birth Center and the infants will be followed for 24 months by the multi-specialty team as part of the standard clinical management including follow-up with neonatologist (NICU team), pediatric nephrology and transplant team according to the clinical protocol for postnatal renal replacement therapy and transplant. Neurodevelopment of the children will assessed using a combination of clinical examination and the Bayley Scale of Infant Development during the first 24 months of life.


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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 40 participants
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Serial Amnioinfusions as Regenerative Therapy for Pulmonary Hypoplasia in Fetuses With Intrauterine Renal Failure or Severe Renal Anomalies- a Feasibility Study
Actual Study Start Date : October 1, 2018
Estimated Primary Completion Date : December 31, 2022
Estimated Study Completion Date : December 31, 2024

Resource links provided by the National Library of Medicine


Arm Intervention/treatment
Experimental: Amnioinfusion
Lactated Ringers Solution for Injection --- Serial ultrasound-guided amnioinfusion procedures will be performed on fetuses having severe LUTO or bilateral renal agenesis that are diagnosed between 18 0/7-25 6/7 weeks.
Drug: Lactated Ringers Solution for Injection
Using ultrasound guidance, a 22 gauge needle will be introduced into amniotic cavity. Warmed Lactated Ringers solution will be injected into the amniotic cavity until an AFI of 8.0 cm is achieved
Other Name: Lactated Ringers Solution for Infusion




Primary Outcome Measures :
  1. Adverse Events [ Time Frame: First amnioinfusion through delivery which may be up to 22 weeks. ]
    Total number of Adverse Events experienced


Secondary Outcome Measures :
  1. Survival to renal transplant [ Time Frame: 5 years ]
    Number of subjects able to receive renal transplant.

  2. Survival to dialysis [ Time Frame: From time of birth up to one month ]
    Number of subjects able to receive dialysis



Information from the National Library of Medicine

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Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Pregnant women with singleton uterine pregnancy
  • Maternal age > age 18
  • Fetus < 26 weeks gestational age with severe LUTO and intrauterine renal failure
  • Fetus < 26 weeks gestational age with bilateral renal agenesis
  • Fetus with absence of chromosome abnormalities
  • Fetus with absence of associated anomalies
  • Mother has negative Hepatitis B, Hepatitis C, and HIV testing
  • Mother meets psychosocial criteria that allows her to make a conscious decision about her fetus/infant

Exclusion Criteria:

  • Associated fetal anomaly unrelated to LUTO or renal agenesis
  • Increased risk for preterm labor including short cervical length, history of incompetent cervix with or without cerclage, and previous preterm birth
  • Placental abnormalities known at time of enrollment
  • Maternal-fetal Rh isoimmunization, Kell sensitization or neonatal alloimmune thrombocytopenia affecting the current pregnancy
  • Maternal medical condition that is a contraindication to surgery or anesthesia
  • Mother has declined invasive testing
  • Inability to comply with the travel and follow-up requirements of the trial
  • Participation in another interventional study that influences maternal and fetal morbidity and mortality
  • Participation in this clinical trial during a previous pregnancy

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03723564


Contacts
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Contact: Shonie L Buenvenida, BSN, RN 507.293.1487 buenvenida.shonie@mayo.edu
Contact: Maureen A Lemens, BSN, RN 507.293.1487 lemens.maureen@mayo.edu

Locations
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United States, Minnesota
Mayo Clinic Recruiting
Rochester, Minnesota, United States, 55905
Contact: Shonie L Buenvenida, BSN, RN       buenvenida.shonie@mayo.edu   
Contact: Maureen A Lemens, BSN, RN    507.293.1487    lemens.maureen@mayo.edu   
Principal Investigator: Rodrigo Ruano, MD, PhD         
Sponsors and Collaborators
Rodrigo Ruano M.D., Ph.D
Investigators
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Principal Investigator: Rodrigo Ruano, MD, PhD Mayo Clinic

Additional Information:
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Responsible Party: Rodrigo Ruano M.D., Ph.D, Professor of Obstetrics and Gynecology and Pediatrics, Mayo Clinic
ClinicalTrials.gov Identifier: NCT03723564     History of Changes
Other Study ID Numbers: 17-007726
First Posted: October 29, 2018    Key Record Dates
Last Update Posted: April 9, 2019
Last Verified: April 2019
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Undecided

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Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
Product Manufactured in and Exported from the U.S.: Yes
Keywords provided by Rodrigo Ruano M.D., Ph.D, Mayo Clinic:
bilateral renal agenesis
lower urinary tract obstruction
congenital renal anomalies
fetal surgery
amnioinfusion
fetus
Additional relevant MeSH terms:
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Renal Insufficiency
Congenital Abnormalities
Kidney Diseases
Urologic Diseases
Pharmaceutical Solutions
Calcium
Calcium-Regulating Hormones and Agents
Physiological Effects of Drugs