Uterus Transplantation to Treat Infertility (OPRTUNTI)

Johns Hopkins University

Status and phase: Enrolling; Phase 3; Phase 2

Conditions: Uterine Factor Infertility

Treatments: Procedure: Uterine Allotransplantation; Drug: Imuran; Drug: Tacrolimus

Study type: Interventional

Funder types: Other

Identifiers

NCT05646992

IRB00166167

Details and patient eligibility

About

This research study will use uterus transplantation to treat uterine factor infertility, also known as the inability to bear children due to not having a uterus. The purpose of this study is to enable women seeking genetically-related children and the childbearing experience to experience pregnancy and birth a child. In this study, living donors will undergo surgery to give the donor's uterus to another woman. The woman who receives the transplant will take immunosuppression to keep the uterus and herself healthy. Because taking immunosuppressive medicine has side effects, uterus transplantation is intended to be temporary, lasting about 5 years.

The goals of the study are successful pregnancy and the birth of one, and possibly two, healthy babies per transplant patient. The uterus is to be removed and immunosuppression stopped following the birth of a child. Offspring are delivered by Caesarian section, at which time the transplant may also be removed.

Transplant candidates must have fertilized, frozen (cryopreserved) embryos at a Johns Hopkins facility before undergoing transplantation. Transplant candidates will be asked to identify candidates' potential uterus donor. Altruistic donors, or women who want to donate without knowing a potential recipient, may also participate. All potential donors will be screened to see if the donors are a good match for a recipient and are healthy enough to have the donation surgery.

Study Duration:

• Uterus Donors: Screening through about 12 months following the transplant operation.
• Uterus Recipients: Recipients may have the uterus for about 5 years. After the transplant is removed, the study team will ask for yearly follow-ups for another 5 years.
• Children born from transplanted uteruses: The study team asks to follow offspring yearly through age 21 years.

Full description

This is a prospective clinical cohort study to establish temporary allogenic uterus transplantation as a feasible and effective reconstructive strategy for the treatment of uterine factor infertility.

Suitable candidates will proceed through as many as nine study stages:

• Stage 1: Telephone Screening Interview
• Stage 2: Blood Work Screening
• Stage 3: In Vitro Fertilization (IVF) & Embryo Cryopreservation
• Stage 4: Full Screening
• Stage 5: Transplantation
• Stage 6: Embryo Transfer
• Stage 7: Pregnancy to Childbirth
• Stage 8: Uterus Explantation
• Stage 9: Longitudinal Follow-Up

Potential participants will first be screened by phone for general eligibility, motivations for transplantation, and probable identification of a living donor. Potential donors will be interviewed by an Independent Living Donor Advocate to determine eligibility. Suitable candidates and candidates' potential living donors will then undergo blood work screening to determine if it's an acceptable pairing for donation and transplantation. Next, if the recipient does not already have embryos banked at a Johns Hopkins Hospital facility, she will participate in IVF and embryo cryopreservation per standard of care protocols. After a sufficient number of fertilized embryos have been successfully stored, the participant and her living donor will undergo full study screening. Donor/recipient pairs deemed suitable for transplantation based on screening results will be scheduled for and undergo transplant surgery. Post-uterus donation, the donor will be followed according to post-hysterectomy surgery patient care protocols. Post transplantation, the recipient will continue under the care of the study team as a transplant patient as well as under the care of gynecologists, obstetricians, and maternal fetal medicine experts. Depending on the transplant recipient's post-operative course, embryo transfer may be attempted as early as 2 months post-transplant. Should the patient become pregnant, obstetrics will follow the participant's and her fetus' progress. Whether or not the recipient successfully carries a pregnancy or births a child, uterus explantation is an anticipated endpoint of this protocol. Patients will be counseled that participants may have the transplant to birth up to two offspring or for about five years, whichever comes first, after which removal of the uterus should be considered.

Study data on uterus transplant recipients will be collected for 5 years post-transplantation under this protocol, or for the entire time the participant has the graft, plus five years post-explantation. All attempts will be made to collect data on the offspring born as a result of this protocol through the offspring's 21st birthday.

Enrollment: 40 estimated patients

Sex: Female

Ages: 18 to 38 years old

Volunteers: Accepts Healthy Volunteers

Inclusion and exclusion criteria

INCLUSION CRITERIA -

Recipient Inclusion Criteria:

• Genotypic female of any race, color, or ethnicity.

• Uterine factor infertility.

• Aged 18-38 years at time of egg retrieval.

• Strong desire to undergo uterus transplant in order to become pregnant and give birth to a child.

• Embryo cryopreservation with embryos located at Johns Hopkins:

  • Has a minimum of 4-8 cryopreserved normal embryos following Preimplantation Genetic Screening (PGS-screening).

OR o Is willing to undergo egg retrieval, in vitro fertilization, and PGS-screening to cryopreserve a minimum of 4-8 normal embryos.

• Willingness to undergo embryo implantation after uterus transplantation to achieve pregnancy.
• In the opinion of the study team, makes a reasonable effort to identify and refer her own potential uterus donor to the study team.
• Completes the protocol informed consent form.
• Non-smoker, defined by having never smoked or having quit >6 consecutive months prior to screening.
• No co-existing medical condition which, in the opinion of the study team, could affect the immunosuppression protocol, surgical procedure, or ability to be pregnant or bear a child. (See Donor and Recipient Exclusion Criteria below. If the condition is amenable to treatment, the study team must agree that said condition should not significantly enhance the surgical risks of uterus transplantation.)
• Negative serum pregnancy test.
• Blood type compatible with donor.
• Negative crossmatch with donor.
• Patient agrees to comply with the protocol and states a dedication to the treatment regime.
• Agrees to uterus explanation following birth of a child and or 5 years without successful pregnancy.

Donor Inclusion Criteria:

• Genotypic female with an intact uterus.
• Medical history includes known successful pregnancy (e.g., gravid uterus).
• Aged 25 - 65 years.
• Consents to uterus donation and required pre-donation screening.
• For females of child-bearing potential: Negative serum pregnancy test.
• Blood type compatible with recipient.
• Negative crossmatch with recipient.

Donor and Recipient Inclusion Criteria:

• USA citizen or equivalent.

• No co-existing psycho-social problems (i.e., alcoholism, drug abuse).

• BMI ≤35

  o A higher BMI may be accepted at the discretion of the study team.

• Negative for HIV at transplant.

• Negative for malignancy for past 5 years.

EXCLUSION CRITERIA-

Donor and Recipient Exclusion Criteria:

• Positive for any of the following conditions:

  • Insulin-dependent diabetes mellitus.
  • Untreated sepsis.
  • HIV (active or seropositive).
  • Active tuberculosis.
  • Active Hepatitis B infection.
  • Active Hepatitis C infection.
  • Viral encephalitis.
  • Toxoplasmosis.
  • Current/recent (within 3 months of donation/screening consent) IV drug abuse.
  • Significant cardiac disease
  • Significant vascular disease o

• Sensitized recipients with high levels (50%) of panel-reactive Human Leukocyte Antigens (HLA) antibodies.

• Conditions that may impact the success of the surgical procedure or increase the risk of postoperative complications including inherited coagulopathies like Hemophilia, Von-Willebrand's disease, Protein C and S deficiency, Thrombocythemias, Thalassemias, Sickle Cell disease, etc.

• Mixed connective tissue diseases and collagen diseases that can result in poor wound healing after surgery.

• Severe neurologic deficits.

• Patients considered unsuitable per the consulted Psychiatric/Psychologic appraisal.

• A history of medical non-compliance.

Donor Only Exclusion Criteria:

• Previous injury to the uterus including giving birth by Cesarean section.
• History of radiation therapy to the abdominal area.
• Other medical conditions, as determined by the study physicians, that would preclude donation.

Recipient Only Exclusion Criteria:

• Conditions that, in the opinion of the study team, may expose the recipient to unacceptable risks under immunosuppressive treatment.

Trial design

Primary purpose: Treatment

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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40 participants in 1 patient group

Uterus Transplant Recipient

Experimental group

Description:

Uterus recipients, who are otherwise healthy, adult, genotypic females affected by uterine factor infertility, will undergo the surgically innovative uterus transplantation procedure combined with short-term use of conventional calcineurin inhibitor-based immunosuppression in to support a fetus to a viable delivery via Caesarian section.

Treatment:

Drug: Tacrolimus

Drug: Imuran

Procedure: Uterine Allotransplantation