Adaptive Behavior Assessment of Men With 49, XXXXY, Klinefelter Syndrome

Status

Withdrawn

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT00347464

Enrollment

Registered

2006-07-04

Start date

2006-06-30

Completion date

2008-08-31

Last updated

2015-12-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Klinefelter Syndrome

Keywords

Kleinfelter

Brief summary

Klinefelter syndrome, a congenital chromosomal abnormality with one or more extra X chromosomes, occurs in out of 400 live male births. The majority of Klinefelter men present with a 47, XXY karyotype. The poly-X variant, with the 49,XXXXY karyotype is uncommon. This syndrome, where subjects have two or more X chromosomes presents with primary hypogonadism, and, particularly if associated with the 49,XXXXY karyotype, significantly impacts life skills across a variety of dimensions, including areas of communication, community use, functional academics, home/school living, health and safety, leisure, self-care, self direction, and work. Adaptive behavior abnormalities in 46,XXY men are well known and described. In the poly-X variant of the 49,XXXXY karyotype, adaptive behavior abnormalities are expected to be much more significant, making these patients eligible for services and Social Security benefits. In 49,XXXXY men no study to date has examined these areas of inquiry in a large patient population, using a psychometrically sound instrument in a large patient population. Current publications are limited to individual case reports or small case summaries. It is important to study the adaptive behavior in its highly abnormal presentation in 49,XXXXY men in order to learn more about the effect of additional X chromosomes on adaptive skills, which determine how an individual responds to daily demands and in order to develop treatment and training goals.

Interventions

None listed

Study design

Observational model

CASE_ONLY

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

MALE

Age

2 Years to 21 Years

Healthy volunteers

Inclusion criteria

* Any Klinefelter male with proven 49,XXXXY karyotype, who does not present with and is not being treated for significant physical/mental illness which might affect his adaptive behavior, who or whose parent or primary caretaker is able to provide informed consent to participate in the study and who or whose parent or primary caretaker has adequate command of the English language, to provide meaningful information will be invited to participate in this study.

Countries

United States

Outcome results