47 XYY SyndromeStash FeraMutations

Technical BiologyMr. Bouchette

Prognosis

What tests can be done to detect 47 XYY Syndrome?

What are the signs that indicate you have 47 XYY

Syndrome?

•Summary Layout47 XYY Syndrome

What Is 47 XYY Syndrome?

What treatment plans are available to treat 47 XYY

Syndrome?

What is the outcome for people with 47 XYY

Syndrome?

Introduction

Diagnosis

Symptoms

Treatment

Definition of XYY Syndrome

 According to the Stedman’s Medical Dictionary XYY Syndrome is a

chromosomal abnormality characterized by the occurrence of one X-chromosome and two Y-chromosomes.

 

Description

The XYY syndrome was in the past was considered the super-male syndrome. Men with this condition were

thought to be overly hostile and more likely to become criminals. These original conceptions came about

because several researchers in the 1960s found a high number of men with XYY syndrome in prisons and

mental facilities. Based on these findings, men with XYY syndrome were labeled as overly aggressive and

likely to be criminals.

The original observations did not take into consideration that the majority of males with XYY syndrome were

not in prisons or mental institutes. Since then, less biased studies have been done on males with XYY

syndrome. Sadly, some text books and many people still believe the incorrect stereotype of the super-

male syndrome.

• Introduction47 XYY Syndrome

Genetic Profile

Chromosomes are structures in the cells that contain genes. Genes are responsible for telling our bodies how to grow and develop. As a rule, an

individual person has 46 chromosomes in his or her cells, which would be 23 pairs. The first 22 pairs are the same in males and females. The last

pair, which are the sex chromosomes, consist of two X chromosomes in a female, and an X chromosome and a Y chromosome in a male.

XYY syndrome occurs when an extra Y chromosome is present in the cells of an affected individual. People with XYY syndrome are always male.

The fault that causes the extra Y chromosome can occur in the fertilizing sperm or in the developing embryo.

XYY is not considered a heredity condition. An inherited condition usually is one in which either the mother or father has an variation in a gene on

chromosome that can be passed onto their children. Typically, in an inherited condition, there is an increased chance that the condition will happen

again. The possibility of the condition reoccurring in another pregnancy is not increased above the general population incidence.

 Demographics

YY syndrome has an incidence of one in 1,000 newborn males. However, since many males with XYY syndrome look like other males without XYY

syndrome, many males are never identified.

 

 

 

• Introduction47 XYY Syndrome

List of Symptoms

(mentioned in various sources)

•Tall stature

•Learning disability

•Delayed speech

•Delayed language skills

•Developmental delays

•Behavioral problems

•Large teeth

•Weakness

•Poor fine motor coordination

•Prominent glabella

•Asymmetrical face

•Long ears

•Sunken chest

•Severe adolescent nodulocystic acne

 

 

 

•Symptoms47 XYY Syndrome

 Treatment for 47 XYY 

The treatment and management for most men with XYY syndrome is not indicated. Though, early detection

and involvement of learning disabilities and behavior difficulties is necessary. 

Speech therapy, physical therapy, and occupational therapy may be supportive for males with XYY syndrome.

Males with XYY syndrome are at danger in hectic environments. That is why a supportive and stimulating

home life is important.

 

•Treatment47 XYY Syndrome

 Prognosis for 47 XYY 

Most males who have learning disabilities and/or behavior problems due to XYY syndrome

have an excellent prognosis. Learning disabilities are mild and the most affected males learn

how to control their impulsiveness and other behavior problems. XYY syndrome does not

shorten lifespan.

 

 

•Prognosis47 XYY Syndrome

Karyotype from a male with 47 XYY

 

•References

• XYY syndrome. Dictionary.com. The American Heritage® Stedman's Medical Dictionary. Houghton Mifflin Company.http://dictionary.reference.com/browse/XYY syndrome (accessed: February 21, 2011).

• Carin Lea Beltz, MS. "XYY Syndrome." 2002. Healthline: Connect to a Better Health. 20 February 2011 <http://www.healthline.com/galecontent/xyy-syndrome>.

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