Related Experiment Video
Updated: Jul 2, 2026
05:51
A Strategy to Identify de Novo Mutations in Common Disorders such as Autism and Schizophrenia
Published on: June 15, 2011
Autistic phenotypes and genetic testing: state-of-the-art for the clinical geneticist
1Laboratory of Molecular Psychiatry and Neurogenetics, University Campus Bio-Medico, Via Alvaro del Portillo 21, I-00128 Rome, Italy.
Journal of Medical Genetics
|August 30, 2008
Summary
This study reviews genetic causes of autism spectrum disorder (ASD), linking gene mutations and abnormalities to specific patient traits. It proposes guidelines for targeted genetic testing in clinical genetics to identify autism's specific genetic origins.
Area of Science:
- Genetics
- Neurodevelopmental Disorders
- Clinical Genetics
Background:
- Autism spectrum disorders (ASD) are complex developmental conditions with significant genetic contributions.
- Recent advances have identified numerous cytogenetic abnormalities and de novo mutations linked to ASD etiology.
- Understanding these genetic factors is crucial for accurate diagnosis and personalized medicine.
Purpose of the Study:
- To review and synthesize current knowledge on genotype-phenotype correlations in ASD.
- To establish links between specific genetic mutations/abnormalities and observed behavioral or morphological phenotypes.
- To develop practical guidelines for clinical geneticists to facilitate targeted genetic testing in ASD patients.
Main Methods:
- Comprehensive literature review of studies investigating genetic causes of ASD.
- Analysis of genotype-phenotype data from identified causal gene mutations and cytogenetic abnormalities.
- Synthesis of findings to identify patterns and correlations.
Main Results:
- Established genotype-phenotype correlations between specific genetic factors and ASD manifestations.
- Identified key genetic abnormalities and mutations associated with distinct behavioral and morphological phenotypes.
- Highlighted the heterogeneity of genetic underpinnings in autism spectrum disorders.
Conclusions:
- Genetic factors play a pivotal role in the etiology of autism spectrum disorders.
- Detailed understanding of genotype-phenotype relationships can guide clinical genetic testing strategies.
- Proposed guidelines aim to improve diagnostic yield and inform clinical management for individuals with ASD.
Related Concept Videos
02:46Genetic Screens
Genetic screens are tools used to identify genes and mutations responsible for phenotypes of interest. Genetic screens help identify individuals or a group of people at risk of developing genetic diseases and help them with early intervention, targeted therapy, and reproductive options.
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which result in visible changes...
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which result in visible changes...
01:23Behavioral Genetics and Its Designs
Behavior genetics explores how genetic inheritance influences human behavior. It focuses on how genes, passed from parents to offspring, contribute to the development of behavioral traits and tendencies. This branch of genetics seeks to understand the complex interplay between inherited genetic factors and environmental influences in shaping our behaviors.
The primary methodologies used in behavior genetics include family studies, twin studies, and adoption studies, each providing unique...
The primary methodologies used in behavior genetics include family studies, twin studies, and adoption studies, each providing unique...
01:19Autism Spectrum Disorder
Autism spectrum disorder (ASD) is a neurodevelopmental condition marked by persistent deficits in social communication and interaction alongside restrictive and repetitive behaviors or interests. ASD is sometimes accompanied by intellectual impairment.
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.
01:43Incomplete Dominance
Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
01:17Karyotyping
Describing the number and physical features of chromosomes can reveal abnormalities that underlie genetic diseases. This description is facilitated by special staining techniques that produce a particular banding pattern on each chromosome. State-of-the-art techniques make this approach even more powerful, enabling the detection of individual genes that cause disease.A Simple Chromosome Staining Technique Provides Valuable Scientific InsightSome genetic diseases can be detected by looking at...
01:29Pharmacogenomics: Identification of New Drug Targets
Advances in genomics have profoundly influenced drug discovery by increasing both the speed and accuracy of pharmaceutical development. Pharmacogenomics, which examines how genetic variation influences drug response, facilitates the identification of novel therapeutic targets and enables patient stratification for personalized treatment. These strategies contribute to improved drug efficacy, minimized adverse effects, and more efficient clinical trial design.Mapping genetic differences...