Overview
Müllerian aplasia, also known as Mayer-Rokitansky-Küster-Hauser syndrome (MRKH syndrome) or vaginal agenesis, is a condition where the uterus and vagina either do not develop fully or are completely absent at birth. It affects people who are genetically female (46,XX chromosomes). The condition happens during fetal development when the structures that normally form the uterus, cervix, and upper vagina — called the Müllerian ducts — fail to develop properly. The ovaries are usually normal and fully functional, which means the body still produces female hormones. As a result, puberty happens normally, including breast development and pubic hair growth. The most common way this condition is discovered is when a young woman does not get her first period, usually around age 15 to 18. This is called primary amenorrhea. Because the vagina may be absent or very short, sexual intercourse can also be difficult or impossible without treatment. Kidney and spine differences are sometimes found alongside this condition, especially in a more complex form called MRKH Type 2 or MURCS association. Treatment focuses on creating a functional vagina, which can be done through non-surgical stretching techniques (dilation therapy) or surgery. People with this condition cannot carry a pregnancy themselves, but they can have biological children through egg retrieval and a gestational surrogate. Emotional and psychological support is an important part of care, as the diagnosis can be deeply impactful.
Also known as:
Key symptoms:
Absent or very short vaginaNo uterus or a very small, undeveloped uterusNo menstrual periods (primary amenorrhea)Normal breast development and pubic hairNormal female hormone levelsDifficulty or inability to have penetrative intercourse without treatmentPossible kidney abnormalities (such as a missing or misplaced kidney)Possible spine or skeletal differencesPossible hearing problems (in some complex cases)Normal female external genitalia in most cases
Multifactorial
Caused by a mix of several genes and environmental factors
Juvenile
Begins in the teen years
FDA & Trial Timeline
1 eventUniversity of Pennsylvania — NA
Data sourced from FDA regulatory filings and ClinicalTrials.gov. Updated periodically.
Treatments
No FDA-approved treatments are currently listed for Müllerian aplasia.
1 clinical trialare actively recruiting — trials can provide access to cutting-edge therapies.
View clinical trials →Specialists
View all specialists →No specialists are currently listed for Müllerian aplasia.
Treatment Centers
8 centersBaylor College of Medicine Rare Disease Center ↗
Baylor College of Medicine
📍 Houston, TX
🏥 NORDStanford Medicine Rare Disease Center ↗
Stanford Medicine
📍 Stanford, CA
🔬 UDNNIH Clinical Center Undiagnosed Diseases Program ↗
National Institutes of Health
📍 Bethesda, MD
🔬 UDNUCLA UDN Clinical Site ↗
UCLA Health
📍 Los Angeles, CA
🔬 UDNBaylor College of Medicine UDN Clinical Site ↗
Baylor College of Medicine
📍 Houston, TX
🔬 UDNHarvard/MGH UDN Clinical Site ↗
Massachusetts General Hospital
📍 Boston, MA
🏥 NORDMayo Clinic Center for Individualized Medicine ↗
Mayo Clinic
📍 Rochester, MN
👤 Mayo Clinic Center for Individualized Medicine
🏥 NORDUCLA Rare Disease Day Program ↗
UCLA Health
📍 Los Angeles, CA
Financial Resources
1 resourcesHalfan
SmithKline Beecham Pharmaceuticals
Halfan — Contact SmithKline Beecham Pharmaceuticals
Travel Grants
No travel grants are currently matched to Müllerian aplasia.
Community
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Caregiver Resources
NORD Caregiver Resources
Support, advocacy, and financial assistance for caregivers of rare disease patients.
Mental Health Support
Rare disease caregiving can be isolating. Connect with counseling and peer support.
Family & Caregiver Grants
Financial assistance programs specifically for caregivers of rare disease patients.
Social Security Disability
Learn how rare disease patients may qualify for SSDI/SSI benefits.
Questions for your doctor
Bring these to your next appointment
- Q1.What type of Müllerian aplasia do I have — is it isolated or part of a more complex syndrome?,Should I have imaging of my kidneys and spine, and what were the results?,What are my options for creating a functional vagina, and which do you recommend for me?,Can I use my own eggs to have a biological child through surrogacy, and how would that process work?,Should I have genetic testing, and what could the results mean for me or my family members?,Can you refer me to a counselor or psychologist who has experience with this condition?,Are there patient support groups or communities you would recommend I connect with?
Common questions about Müllerian aplasia
What is Müllerian aplasia?
Müllerian aplasia, also known as Mayer-Rokitansky-Küster-Hauser syndrome (MRKH syndrome) or vaginal agenesis, is a condition where the uterus and vagina either do not develop fully or are completely absent at birth. It affects people who are genetically female (46,XX chromosomes). The condition happens during fetal development when the structures that normally form the uterus, cervix, and upper vagina — called the Müllerian ducts — fail to develop properly. The ovaries are usually normal and fully functional, which means the body still produces female hormones. As a result, puberty happens nor
How is Müllerian aplasia inherited?
Müllerian aplasia follows a multifactorial inheritance pattern. Genetic counseling can help families understand recurrence risk and testing options.
At what age does Müllerian aplasia typically begin?
Typical onset of Müllerian aplasia is juvenile. Age of onset can vary across affected individuals.
Are there clinical trials for Müllerian aplasia?
Yes — 1 recruiting clinical trial is currently listed for Müllerian aplasia on UniteRare. See the clinical trials section on this page for phase, sponsor, and site details sourced from ClinicalTrials.gov.
What treatment and support options exist for Müllerian aplasia?
1 patient support program are currently tracked on UniteRare for Müllerian aplasia. See the treatments and support programs sections for copay assistance, eligibility, and contact details.