Helpline: 1‑267‑338‑4262 | helpline@genetic.org

AXYS - The Association for X&Y Chromosome Variations

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Helpline: 1‑267‑338‑4262 | info@genetic.org

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A Parent’s Story

Alone No More

By Virginia Cover

In 1987, well before the Internet gave easy access to genetic information, my husband and I received a prenatal diagnosis of 47,XXY, or Klinefelter syndrome. We had excellent genetic counseling, and decided that if there were any issues, such as learning disability or speech delay, we could address it satisfactorily.

But there were challenges. Few medical or educational professionals were prepared to provide expert guidance to us, especially when our son was also diagnosed with an autism spectrum disorder. They all asked me if I knew of any link between 47,XXY and PDD-NOS (pervasive developmental disorder, not otherwise specified), which is a mild form of autism. Of course, I did not.

The few articles we had read mentioned nothing about autism. We added ASD to the challenges he had and that we dealt with on a daily basis. I have to say that we felt really alone at the time.

Our own families were very supportive of us but they also were puzzled by the lack of information about this surprisingly common genetic condition. If 1 in 600 boys and men were affected, why did we not know anyone else with an extra sex chromosome, and why did the professionals tell us that they really were not familiar with these genetic conditions?

Then one day my mother sent me a copy of a letter sent to Dear Abby. I wrote its author, Melissa Aylstock, and discovered Klinefelter Syndrome and Associates (which she had founded, later becoming AXYS). A year later, I attended my first conference, where I discovered other families with similar challenges. I especially enjoyed hearing from adults about how they had established themselves in careers despite contending with learning disabilities.

Our family also began attending New York area support groups. We discovered that our son John wasn’t alone in having a diagnosis of mild autism in addition to Klinefelter syndrome. Families traded names of doctors who had some specialized knowledge of Klinefelter’s and its impact on adolescents. We also exchanged information through the KSA listserve. Through the conferences and the newsletter, we learned about a brain imaging study at the National Institutes of Health. John participated in this study for eight years, and each time we went to Washington, we met additional families with whom to network.

Through the years, we found various professionals who took special interest in X and Y chromosome variations. They were able to help John progress through puberty fairly typically. He had teachers and psychologists who helped him graduate from high school with a Regents Diploma. But most of our emotional support came through the local support group and by attending family conferences.

I am glad that AXYS has become a valuable web-based resource for those affected by X and Y chromosome variations. The clinic consortium would have been so valuable to us during childhood and adolescence. Although it came into being after John was no longer a child and he already had a group of medical providers, I am glad it is there for all those who are newly diagnosed.

We now look forward to attending the family conferences every other year. My husband and I always go home with new knowledge and fresh perspectives. John is just happy to spend three days hanging around with other young adults who understand exactly what he has experienced in life. AXYS is the most important charity that we support annually.

John has progressed slowly but steadily as an adult. He had one false start in college but is now a sophomore, taking classes on a part-time basis. He has been able to work part time and is currently taking a vocational training program in computer maintenance and repair. John lives independently in a condo and has some support through New York State services for adults with developmental disabilities. We are grateful to all that AXYS and its community has helped us through over the years.

2023-08-23T12:11:13-04:00

Educational Brochures

Below you will see links to a variety of informational brochures on X and Y chromosome variations. They are downloadable and suitable for printing in your office or for sending electronically to those you think would benefit from the information.

You are also welcome to call or write us at AXYS if you would like additional information or would benefit from referrals to other medical professionals or geneticists familiar with this population.

Trifold brochure printing instructions: Be sure you are printing in two-sided (duplex) mode, and to select the “Flip on Short Edge” or “Short-Edge Binding” option, if available in the Print dialog box or any associated dialog boxes.

2025-03-05T12:32:39-05:00

Tell Your Child About the Diagnosis

Tell Your Child About the Diagnosis

We have gathered these resources to help you share the diagnosis involving extra X or Y chromosomes with your child. Please watch this webinar presented by Susan Howell MS, CGC, MBA – Disclosing the Diagnosis in X and Y Variations:

Our thanks to the eXtraordinarY Kids Clinic in Denver, one of the multidisciplinary clinics AXYS Clinic and Research Consortium (ACRC) for sharing these flyers – produced to help you share the diagnosis with your child.

Talking with your child about his diagnosis of Klinefelter syndrome

Talking with your child about her diagnosis of Triple X syndrome

Talking with your child about his diagnosis of XYY syndrome

You may wish to order and have on hand when you disclose the diagnosis one of these books on having extra X or Y chromosomes.

AXYS has created videos of ACRC members reading children’s books on X&Y variations. Watch the videos and order the books:  https://genetic.org/books/

How to tell your child about their XXY, XYY, or trisomy X diagnosis.

2024-08-22T14:51:30-04:00

Volunteer

Volunteer Opportunities

AXYS exists through the dedication and commitment of those who support it in any and all the ways they can. In some cases, that support is financial; in others, it involves direct volunteer service. Volunteer opportunities are varied and may include:

  • Participating in AXYS committees including fundraising, program, support groups, finance and governance, and research
  • Helping to answer or serving as a resource volunteer for the Helpline
  • Posting accurate information on Facebook pages and other social media, and helping to monitor postings on AXYS’ own social media

· Serving as a volunteer resource with expertise in marketing, health care, mental health, communications (including newsletters and publications,) criminal justice and other legal matters

To get started with volunteering, please complete this online form.

All volunteers will be asked to complete a Volunteer Confidentiality Agreement.

2025-02-28T13:51:32-05:00

Finances

Finances

As a small nonprofit 501(c)(3) organization, AXYS relies primarily on the generosity of donors who provide the necessary financial support and volunteers who help with the countless tasks needing attention on a daily basis. Our finances are always open for inspection. Below are links to relevant documents that detail our financial activity over the years.

View our Guidestar profile for more information.

IRS Tax Returns

2024 990

2023 990

2022 990

2021 990

2020 990

2019 990

2018 990-EZ

2017 990

2016 990-EZ

2015 990

2014 990-EZ and FASB Functional Categories Detail

2013 990-EZ and FASB Functional Categories Detail

2012 990-EZ 

2011 990-EZ

2010 990-EZ

2009 990-EZ

2008 990-EZ

2007 990-EZ

2025-04-01T10:20:04-04:00

About 48,XXYY

Welcome to the home of the XXYY Project and information about 48-XXYY Syndrome

Our vision is a world where men and boys with XXYY Syndrome lead purposeful, productive lives. Read more about our mission.

XXYY Project - Ryan Scovell Memorial Fund

In support of our mission, the XXYY Project raises funds to further research on 48 XXYY Syndrome. Recently, we worked with researchers and funded the paper “Psychotropic Medication Use in 48 XXYY Syndrome”. This paper is now on our website. Here is a convenient link to the paper: https://genetic.org/psychotropic-medication-use-in-48xxyy-syndrome/

Currently, we are working with researchers on an update to the 2008 XXYY Research Paper, titled “A New Look at XXYY Syndrome: Medical and Psychological features.” We are asking all participants that were in that study to please reach out to us at xxyyprojectsupport@genetic.org

Thanks to all who have participated and made these projects successful.

Please DONATE to the Ryan Scovell Memorial Research Fund to ensure we are prepared to help fund future research projects.

On behalf of the XXYY Project and the entire ACRC research community, thank you for your past support.

2026-03-27T15:50:03-04:00

About 47,XYY

About 47,XYY

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47,XYY affects about 1 in 1,000 males. Adding to its relative rarity, it is diagnosed in only about 10 percent of cases, often during prenatal testing.

Many with 47,XYY have no symptoms at all. Others can demonstrate significant developmental and behavioral issues.

47,XYY was sometimes referred to as “Jacob’s syndrome.”

XYY Symptoms

47,XYY may produce a wide array of symptoms, although most people with the extra Y chromosome it entails will exhibit only some, but not all, of the following:

  • Tall stature
  • Low muscle tone (can affect motor development and coordination)
  • Subtle developmental delays / delayed developmental milestones
  • Speech delay / expressive language disorder
  • Learning disability (such as dyslexia and difficulties with written expression)
  • Autism
  • Attention deficits (such as ADD or ADHD)
  • Depression, Anxiety, or other mood disorder
  • Behavioral differences including social skill impairment, immaturity, low self-esteem, and impulsivity
  • Severe acne in adolescence

The Case for Testing

When children show a history of symptoms such as speech delay, learning disability, or autism, parents should strongly consider genetic testing to determine if the cause is a sex chromosome aneuploidy (SCA). Testing for 47,XYY involves a specialized blood test, either a “karyotyping” or a “microarray.” Health care professionals are often unfamiliar with the developmental and cognitive deficits associated with X&Y variations.

Resources

Frequently Asked Questions about 47,XYY

Downloadable Brochure- About 47,XYY Versión en español
Trifold brochure printing instructions: Be sure you are printing in two-sided (duplex) mode, and to select the “Flip on Short Edge” or “Short-Edge Binding” option, if available in the Print dialog box or any associated dialog boxes.

Living with Klinefelter Syndrome (47,XXY) Trisomy X (47, XXX) and 47, XYY: A Guide for Families and Individuals Affected by Extra X and Y Chromosome Variations

Thanks to the generosity of the book’s author, Virginia Isaacs Cover, MSW, AXYS is pleased to make this book available to the X and Y variation community, in its entirety, at no cost. Please feel free to download and/or print it for your personal use. Those wishing to purchase a soft-bound copy can do so at Amazon or Kindle. All proceeds from the sale of this book benefit the GALAXY registry of X and Y variations.

Spanish: “A Guide for Families and Individuals Affected by X and Y Chromosome Variations”

dna-4

What is XYY? Meet Steve and find out.

Visit our CafePress store to support AXYS and raise awareness of 47,XYY.

2026-03-11T16:59:19-04:00

About 47,XXX (Trisomy X)

About Trisomy X

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Typically, a female has 2 X chromosomes. 1 in 1,000 females has an extra X. This is called Trisomy X. It is also written as 47,XXX.

As you can see in the adjoining photo collage of girls and young women with 47,XXX, the condition is not characterized by any prominent physical features. Children and adults with Trisomy X do not look different than their peers, though they may be somewhat taller. Some have a curved little finger, epicanthal eyelid fold (skin curving slightly down toward the inner eye), and flat feet. Some have very little in the way of symptoms, others have significant developmental, medical, and psychological issues.

Symptoms

47,XXX may produce the following additional symptoms, although most affected individuals will have only some of them:

  • Low muscle tone (can affect motor development and coordination)
  • Subtle developmental delays / delayed developmental milestones
  • Speech delay/expressive language disorder
  • Learning disabilities (such as dyslexia and difficulties with written expression)
  • Chronic stomach pain and constipation
  • Attention deficits (such as ADD or ADHD)
  • Depression, Anxiety, or other mood disorder
  • Behavioral differences including social skill impairment, immaturity, low self-esteem
  • Genitourinary or kidney malformations
  • Seizures
  • Tremors
  • Puberty and fertility are typically considered normal in 47, XXX; though there is increased risk of Premature Ovarian insufficiency (menstrual periods stop before age 40)

Because symptoms are subtle and vary widely from one person to the next, only 10 percent of those with Trisomy X are diagnosed during their lifetimes. More are being identified prenatally due to maternal testing (amniocentesis, CVS, or non-invasive cell free DNA blood test).

Adults may learn they have an extra X chromosome during infertility testing or during non-invasive prenatal testing when the mother’s extra X may be detected during cell-free DNA blood work.

The Importance of Testing

One of the goals of AXYS is to raise awareness of the developmental, medical and psychosocial issues that may accompany 47,XXX. Children with symptoms such as speech delay, learning disability, developmental delays or genitourinary malformations should be followed up with genetic testing to determine if the cause is an X and Y variation. 

Please visit our Prenatal Testing Page for more information regarding genetic testing: https://genetic.org/im-pregnant-genetic-testing-questions/prenatal-testing/

Resources

Frequently Asked Questions about 47,XXX

Downloadable Brochure- About 47,XXX (Trisomy X) Versión en español
Trifold brochure printing instructions: Be sure you are printing in two-sided (duplex) mode, and to select the “Flip on Short Edge” or “Short-Edge Binding” option, if available in the Print dialog box or any associated dialog boxes.

Living with Klinefelter Syndrome (47,XXY) Trisomy X (47, XXX) and 47, XYY: A Guide for Families and Individuals Affected by Extra X and Y Chromosome Variations

Thanks to the generosity of the book’s author, Virginia Isaacs Cover, MSW, AXYS is pleased to make this book available to the X and Y variation community, in its entirety, at no cost. Please feel free to download and/or print it for your personal use. Those wishing to purchase a soft-bound copy can do so at Amazon or Kindle. All proceeds from the sale of this book benefit the GALAXY registry of X and Y variations.

Spanish: “A Guide for Families and Individuals Affected by X and Y Chromosome Variations”

Trisomy X article by Nicole Tartaglia, et al | Spanish language version

Expanding the Phenotype of Triple X Syndrome by Nicole Tartaglia, et al

Talking to your daughter: “My Guide to Trisomy X

“Elizabeth and her Extra X”

Self Management Traffic Light Resource
This resource was created by an adult with Trisomy X. We’re grateful they shared it with us. We hope you find it helpful.

Facebook Support Groups

Trisomy X/Triple X/XXX Global Support Group

Trisomy X- A Group Just For Us

Other Trisomy X Websites

Contactgroep Triple-X Syndroom (The Netherlands)

Trisomy X collage

Visit our CafePress store to support AXYS and raise awareness of Trisomy X.

2026-03-11T17:00:11-04:00
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