Skip to content
How It Works
Explore
Resources Ask a Question
Who It's For
Patients
Decode results, prep for appointments, weigh options.
Caregivers & advocates
Carry the research load for someone you love.
Providers & clinicians
Resources for patients in your practice.
Log In Ask a Question
PubMed This is a summary of 17 peer-reviewed journal articles Updated
Medical Genetics

The Genetic Blueprint: Pure vs. Syndromic Subtypes

At a Glance

46,XX gonadal dysgenesis is categorized into pure (affecting only the ovaries) and syndromic (affecting other systems, like hearing in Perrault Syndrome). Whole Exome Sequencing (WES) is recommended to pinpoint the genetic cause and guide personalized care.

The human body uses a complex set of “blueprints” or genes to build and maintain the ovaries. When those blueprints have a small change, it can lead to 46,XX gonadal dysgenesis. For most people, this affects only the ovaries, but for others, it may be part of a larger pattern that affects other parts of the body [1][2].

Medical professionals categorize these cases into two main types: pure and syndromic.

Pure (Isolated) Gonadal Dysgenesis

In “pure” gonadal dysgenesis, the genetic change only impacts how the ovaries develop [3]. The rest of the body typically develops as expected, and the primary symptom is a lack of puberty or periods [4].

The genetic changes in pure cases usually involve the genes responsible for the ovaries receiving signals from the brain, or for the proteins made by the eggs themselves that help the ovaries grow and function [5][6].

Syndromic Gonadal Dysgenesis

In “syndromic” cases, the genetic change affects the ovaries plus at least one other system in the body [7]. The most well-known example is Perrault Syndrome, which combines ovarian issues with sensorineural hearing loss (hearing loss caused by changes in the inner ear or nerves) [8][7].

The genes associated with syndromic forms often involve fundamental processes. For example, some genetic changes affect energy production in cells, leading to Perrault Syndrome, while others might affect how materials move in and out of cells [8][9]. Because these genes do many jobs, multiple systems in the body are impacted.

The Importance of Genetic Testing

Doctors often recommend Whole Exome Sequencing (WES) [10][11].

Unlike a standard blood test that looks at a few things, WES “reads” the protein-coding parts of all your genes at once [10][12]. This means you do not need to worry about memorizing specific gene acronyms; the test will look for them automatically. This is helpful for:

  1. Finding Answers: It can end the “diagnostic odyssey” by pinpointing the exact genetic cause [12][13].
  2. Early Screening: If a gene associated with hearing loss is found, your doctor will know to check your hearing immediately, even if you haven’t noticed any trouble yet [14][15].
  3. Family Planning: It helps you and your family understand if this condition could be passed on to future generations or if siblings should be tested [16][17].

Working with a Genetic Counselor is highly recommended, as they are uniquely trained to help you navigate these test results and understand the implications for your family planning [16]. Whether your case is pure or syndromic, finding the genetic cause provides a roadmap for your care, ensuring that every part of your health is being monitored correctly [16].

Common questions in this guide

What is the difference between pure and syndromic gonadal dysgenesis?
Pure gonadal dysgenesis only impacts how the ovaries develop, typically causing a lack of puberty or periods. Syndromic gonadal dysgenesis affects the ovaries as well as at least one other system in the body, such as hearing or balance.
What is Perrault Syndrome?
Perrault Syndrome is a specific type of syndromic gonadal dysgenesis. People with this condition experience both ovarian development issues and sensorineural hearing loss, which is caused by changes in the inner ear or nerves.
Why is Whole Exome Sequencing (WES) recommended for this condition?
WES reads all the protein-coding parts of your genes at once to find the exact genetic cause of your condition. This helps doctors know what other health screenings you might need and provides important information for family planning.
Could my siblings or children have this genetic trait?
Finding the specific genetic cause of your condition can help determine if it might be passed down to future children or if your siblings should be tested. A genetic counselor can help you understand the risks and next steps for your family.

Questions to Ask Your Doctor

Curated prompts to bring to your next appointment.

  1. 1.Is my diagnosis considered 'pure' or 'syndromic' gonadal dysgenesis?
  2. 2.What specific genes were included in my genetic testing panel?
  3. 3.If a mutation was found, what other specialists (like an audiologist or neurologist) should I see?
  4. 4.What is the chance that my siblings or future children could carry this same genetic trait?
  5. 5.If my Whole Exome Sequencing (WES) came back 'negative' or with 'variants of uncertain significance,' what are our next steps?

Questions For You

Tap a prompt to share your answer — we'll use it plus this page's context to start a tailored conversation.

References

References (17)
  1. 1

    A rare case of 46,XX gonadal dysgenesis, Mayer-Rokitansky-Kuster-Hauser syndrome, pituitary and thyroid hypoplasia.

    Ambachew R, Gulilat A, Aberra T, et al.

    Endocrinology, diabetes & metabolism case reports 2022; (2022()).

    PMID: 35142292
  2. 2

    Genetics of human female infertility†.

    Yatsenko SA, Rajkovic A

    Biology of reproduction 2019; (101(3)):549-566 doi:10.1093/biolre/ioz084.

    PMID: 31077289
  3. 3

    Misdiagnosis of associated mullerian agenesis in a female with 46, XX gonadal dysgenesis: a case report and review of literature.

    Opdecam L, Barudy Vasquez J, Camerlinck M, Makar A

    Journal of obstetrics and gynaecology : the journal of the Institute of Obstetrics and Gynaecology 2021; (41(7)):1164-1165 doi:10.1080/01443615.2020.1798908.

    PMID: 33054466
  4. 4

    Clinical features and management of 33 patients with 46,XX pure gonadal dysgenesis.

    Huang H, Wang CQ, Tian QJ

    Gynecological endocrinology : the official journal of the International Society of Gynecological Endocrinology 2016; (32(12)):995-998 doi:10.1080/09513590.2016.1190820.

    PMID: 27250571
  5. 5

    The first case of novel variants of the FSHR mutation causing primary amenorrhea in 2 siblings in Korea.

    Yoo S, Yoon JY, Keum C, Cheon CK

    Annals of pediatric endocrinology & metabolism 2023; (28(1)):54-60 doi:10.6065/apem.2142116.058.

    PMID: 35038834
  6. 6

    Molecular Aspects and Clinical Relevance of GDF9 and BMP15 in Ovarian Function.

    Belli M, Shimasaki S

    Vitamins and hormones 2018; (107()):317-348 doi:10.1016/bs.vh.2017.12.003.

    PMID: 29544636
  7. 7

    Sensorineural hearing loss in a patient with Swyer syndrome.

    Chen PJ, Chen HC

    Clinical dysmorphology 2018; (27(1)):4-5 doi:10.1097/MCD.0000000000000190.

    PMID: 29200406
  8. 8

    Perrault syndrome with amenorrhea, infertility, Tarlov cyst, and degenerative disc.

    Al-Jaroudi D, Enabi S, AlThagafi MS

    Gynecological endocrinology : the official journal of the International Society of Gynecological Endocrinology 2019; (35(12)):1037-1039 doi:10.1080/09513590.2019.1637407.

    PMID: 31274036
  9. 9

    A mutation in the nucleoporin-107 gene causes XX gonadal dysgenesis.

    Weinberg-Shukron A, Renbaum P, Kalifa R, et al.

    The Journal of clinical investigation 2015; (125(11)):4295-304.

    PMID: 26485283
  10. 10

    [Exome diagnostics in neurology].

    Zech M, Wagner M, Schormair B, et al.

    Der Nervenarzt 2019; (90(2)):131-137 doi:10.1007/s00115-018-0667-1.

    PMID: 30645660
  11. 11

    Newly Described Mutations of the UNC45A Gene in Infants with Jaundice and Pruritus.

    Degtyareva A, Dokshukina A, Filippova E, et al.

    Current pediatric reviews 2025; (21(2)):192-199 doi:10.2174/0115733963264010231213103328.

    PMID: 38375845
  12. 12

    Comparison of first-tier whole-exome sequencing with a multi-step traditional approach for diagnosing paediatric outpatients: An Italian prospective study.

    Rosina E, Pezzani L, Apuril E, et al.

    Molecular genetics & genomic medicine 2024; (12(1)):e2316 doi:10.1002/mgg3.2316.

    PMID: 38041506
  13. 13

    Yield of exome sequencing in patients with developmental and epileptic encephalopathies and inconclusive targeted gene panel.

    Sedlackova L, Sterbova K, Vlckova M, et al.

    European journal of paediatric neurology : EJPN : official journal of the European Paediatric Neurology Society 2024; (48()):17-29 doi:10.1016/j.ejpn.2023.10.006.

    PMID: 38008000
  14. 14

    LARS2-Related Perrault Syndrome in Siblings With 46,XY Differences of Sex Development.

    Adam AP, O'Sullivan L, Peterson A, et al.

    American journal of medical genetics. Part A 2025; (197(8)):e64064 doi:10.1002/ajmg.a.64064.

    PMID: 40119736
  15. 15

    Marfanoid habitus is a nonspecific feature of Perrault syndrome.

    Zerkaoui M, Demain LAM, Cherkaoui Jaouad I, et al.

    Clinical dysmorphology 2017; (26(4)):200-204 doi:10.1097/MCD.0000000000000198.

    PMID: 28832386
  16. 16

    Utility of exome sequencing for the diagnosis of pediatric-onset neuromuscular diseases beyond diagnostic yield: a narrative review.

    Piñeros-Fernández MC, Morte B, García-Giménez JL

    Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology 2024; (45(4)):1455-1464 doi:10.1007/s10072-023-07210-z.

    PMID: 37989827
  17. 17

    Identification of genetic causes in children with unexplained epilepsy based on trio-whole exome sequencing.

    Chengyan L, Chupeng X, You W, et al.

    Clinical genetics 2024; (106(2)):140-149 doi:10.1111/cge.14519.

    PMID: 38468460

This page explains the genetic subtypes of 46,XX gonadal dysgenesis for educational purposes only. Always consult a genetic counselor or your healthcare provider to discuss your specific test results and care plan.

Get notified when new evidence is published on 46,XX gonadal dysgenesis.

We monitor PubMed for new peer-reviewed studies on this topic and email a short summary when something meaningful changes.