Fragile X syndrome

J L Welch1, J K Williams

  • 1Regional Genetic Consultation Clinics, Iowa City, Iowa, USA.

Neonatal Network : NN
|February 26, 2000
PubMed

Insights

Fragile X syndrome is a common inherited cause of intellectual disability, affecting males more severely than females. Families need support for newborn health, family planning, and genetic counseling regarding this condition.

Area of Science:

  • Genetics
  • Pediatrics
  • Medical Genetics

Background:

  • Fragile X syndrome is the leading inherited cause of intellectual disability, particularly in males.
  • Females may exhibit milder symptoms of Fragile X syndrome, even with full mutation.
  • Families affected by Fragile X syndrome experience significant concerns regarding genetic counseling and family planning.

Observation:

  • Neonatal nurses play a crucial role in managing families affected by Fragile X syndrome.
  • Assessment and healthcare management are key nursing responsibilities for these families.
  • Counseling and referral services are vital components of neonatal nursing care for Fragile X syndrome.

Findings:

  • Fragile X syndrome presents a significant challenge for affected families, requiring comprehensive support.
  • The role of neonatal nurses extends to crucial assessment, management, and counseling.
  • Early identification and intervention are critical for families impacted by Fragile X syndrome.

Implications:

  • Neonatal nurses are essential in guiding families through the complexities of Fragile X syndrome.
  • Improved understanding of Fragile X syndrome supports better family planning and genetic counseling.
  • Enhanced nursing support can alleviate family concerns and improve health outcomes for newborns.

Related Concept Videos

Pedigree Analysis01:35

Pedigree Analysis

Overview
X-linked Traits01:19

X-linked Traits

In most mammalian species, females have two X sex chromosomes and males have an X and Y. As a result, mutations on the X chromosome in females may be masked by the presence of a normal allele on the second X. In contrast, a mutation on the X chromosome in males more often causes observable biological defects, as there is no normal X to compensate. Trait variations arising from mutations on the X chromosome are called “X-linked”.
Sex-linked Disorders01:43

Sex-linked Disorders

Like autosomes, sex chromosomes contain a variety of genes necessary for normal body function. When a mutation in one of these genes results in biological deficits, the disorder is considered sex-linked.
X-Inactivation01:58

X-Inactivation

The human X chromosome contains over ten times the number of genes as in the Y chromosome. Since males have only one X chromosome, and females have two, one might expect females to produce twice as many of the proteins, with undesirable results.
X-linked Traits01:19

X-linked Traits

In most mammalian species, females have two X sex chromosomes and males have an X and Y. As a result, mutations on the X chromosome in females may be masked by the presence of a normal allele on the second X. In contrast, a mutation on the X chromosome in males more often causes observable biological defects, as there is no normal X to compensate. Trait variations arising from mutations on the X chromosome are called “X-linked”.
X-inactivation01:58

X-inactivation

The human X chromosome contains over ten times the number of genes as in the Y chromosome. Since males have only one X chromosome, and females have two, one might expect females to produce twice as many of the proteins, with undesirable results.