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AXYS - The Association for X&Y Chromosome Variations
Helpline: 1‑267‑338‑4262 | info@genetic.org

47,XXY (Klinefelter)

Variegation of autism related traits across seven neurogenetic disorders

Article Title: Variegation of autism related traits across seven neurogenetic disorders

Authors: Lee, Niu, Zhang, Clasen, Kozel, Smith, Wallace, and Raznahan

Date of Publication: April 7, 2022

“Gene dosage disorders (GDDs) constitute a major class of genetic risks for psychopathology, but there is considerable debate regarding the extent to which different GDDs induce different psychopathology profiles. The current research speaks to this debate by compiling and analyzing dimensional measures of several autism-related traits (ARTs) across seven diverse GDDs.”

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Patterns of psychopathology and cognition in sex chromosome aneuploidy

Article Title: Patterns of psychopathology and cognition in sex chromosome aneuploidy

Authors: Rau, Whitman, Schauder, Gogate, Lee, Kenworthy, and Raznahan

Date of Publication: December 15, 2021

“There is domain-specific variation in psychopathology across SCA groups and domain-specific correlation between psychopathology and IQ within SCAs. These findings (i) help to tailor clinical assessment of this common and impactful family of genetic disorders and (ii) suggest that dosage abnormalities of X- and Y-linked genes impart somewhat distinct profiles of neuropsychiatric risk.”

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Recommendations to improve the patient experience and avoid bias when prenatal screening/testing

Article Title: Recommendations to improve the patient experience and avoid bias when prenatal screening/testing

Authors: Meredith, Brackett, Diaz, Freeman, Huggins, Khan, Leach, Levitz, Michie, Onufer, Skotko, Smith, White, Waller, and Ayers

Date of Publication: October 29, 2022

“While prenatal screening and testing have expanded substantially over the past decade and provide access to more genetic information, expectant parents are more likely to describe the diagnosis experience as negative than positive. In addition, the conversations that take place during these experiences sometimes reflect unconscious bias against people with disabilities. Consequently, an interdisciplinary committee of experts, including people with disabilities, family members, disability organization leaders, healthcare and genetics professionals, and bioethicists, reviewed selected published and gray literature comparing the current state of the administration of prenatal testing to the ideal state. Subsequently, the interdisciplinary team created recommendations for clinicians, public health agencies, medical organizations, federal agencies, and other stakeholders involved with administering prenatal screening and testing to create better patient experiences; conduct training for healthcare professionals; create, enforce, and fund policies and guidelines; and engage in more robust data collection and research efforts.”

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Cardiometabolic-related Diagnoses in Youth With Klinefelter Syndrome

Article Title: Population-based Assessment of Cardiometabolic-related Diagnoses in Youth With Klinefelter Syndrome: A PEDSnet Study

Authors: Davis, Nokoff, Furniss, Pyle, Valentine, Fechner, Ikomi, Magnusen, Nahata, Vogiatzi, and Dempsey

Date of Publication: February 1, 2022

“Diabetes and cardiovascular diseases are common among men with Klinefelter syndrome (KS) and contribute to high morbidity and mortality.”

“This large, population-based cohort of youth with KS had a higher odds of most cardiometabolic-related diagnoses than matched controls.”

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2023-01-25T12:41:07-05:00Categories: 47,XXY (Klinefelter)|Tags: , , |

Supernumerary sex chromosome abnormalities – new developments and future trajectories

Article Title: Supernumerary sex chromosome abnormalities – new developments and future trajectories – A summary of the 2022 3rd International Workshop on Klinefelter syndrome, XYY and Trisomy X

Authors: Gravholt, Ferlin, Gromoll, Juul, Raznahan, Van Rijn, Rogol, Skakkebæk, Tartaglia, and Swaab

Date of Publication: January 4, 2023

“The 3rd International Workshop on Klinefelter Syndrome, Trisomy X, and 47,XYY syndrome was held in Leiden, the Netherlands, on September 12-14, 2022. Here, we review new data presented at the workshop and discuss scientific and clinical trajectories. We focus on shortcomings in knowledge and therefore point out future areas for research.”

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Early impact of X- and Y-chromosome variations on social communication and social emotional development in 1–2-year-old children

Article Title: Early impact of X- and Y-chromosome variations (XXX, XXY, XYY) on social communication and social emotional development in 1–2-year-old children

Authors: Bouw, Swaab, Tartaglia, Jansen, and Van Rijn

Date of Publication: February 18, 2022

“These findings suggest that SCT [sex chromosome trisomies] impact the maturation of the social brain already from an early age, and stress the importance of early monitoring and (preventive) support early social development in young children with SCT.”

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2022-12-02T13:45:58-05:00Categories: 47,XXX (trisomy x), 47,XXY (Klinefelter), 47,XYY|Tags: |

Delaying testicular sperm extraction in 47,XXY Klinefelter patients

Article Title: Delaying testicular sperm extraction in 47,XXY Klinefelter patients does not impair the sperm retrieval rate, and AMH levels are higher when TESE is positive

Authors: Renault, Labrune, D’Estaing, Cuzin, Lapoirie, Benchaib, Lornage, Soignon, De Souza, Dijoud, Fraison, Pral-Chatillon, Bordes, Sanlaville, Schluth-Bolard, Salle, Ecochard, Lejeune, and Plotton

Date of Publication: September 16, 2022

“Should testicular sperm extraction (TESE) in non-mosaic 47,XXY Klinefelter syndrome (KS) patients be performed soon after puberty or could it be delayed until adulthood?”

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2022-11-16T14:45:18-05:00Categories: 47,XXY (Klinefelter)|Tags: , |

Positive predictive value of noninvasive prenatal testing for sex chromosome abnormalities

Article Title: Positive predictive value of noninvasive prenatal testing for sex chromosome abnormalities

Authors: Guo, Cai, Lin, Xue, Huang, and Xu

Date of Publication: August 12, 2022

A clinic had 47,855 patients undergo NIPT (noninvasive prenatal testing). They found that the positive predictive value (PPV) for sex chromosome abnormalities was 36.9%. The PPV in patients aged 30–34 years was significantly higher than that in patients aged < 30 years.

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Klinefelter Syndrome: What should we tell prospective parents?

Article Title: Klinefelter Syndrome: What should we tell prospective parents?

Authors: White, Zacharin, Fawcett, and McGillivray

Date of Publication: October 12, 2022

“With increasing uptake of antenatal noninvasive prenatal testing (NIPT), a corresponding increase in identification of KS has been documented. Population-based longitudinal data from infancy to adulthood on these individuals is lacking, which impedes balanced antenatal genetic counselling and raises issues for prospective parents and clinicians alike.”

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2022-10-25T13:09:07-04:00Categories: 47,XXY (Klinefelter)|Tags: , |

Noninvasive prenatal screening (NIPS) results for participants of the eXtraordinarY babies study

Article Title: Noninvasive prenatal screening (NIPS) results for participants of the eXtraordinarY babies study: Screening, counseling, diagnosis, and discordance

Authors: Howell, Davis, Thompson, Brown, Tanda, Kowal, Alston, Ross, and Tartaglia

Date of Publication: September 6, 2022

“The majority (57%) of parents with a NIPS result positive for SCA defer diagnostic confirmation until birth; however, diagnostic results can be discordant with NIPS results, which may impact genetic counseling.”

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