Clinical Genetics is a medical specialty focused on identifying and managing diseases caused by changes in genes, chromosomes, or inherited biological mechanisms.
A Clinical Genetics Service combines:
- Medical evaluation
- Family history assessment
- Genetic testing
- Genetic counseling
- Personalized treatment and prevention planning
The goal is not only to diagnose disease, but also to help patients and families better understand their health risks and make informed medical decisions.
Why is Clinical Genetics Important?
Genetic conditions can affect people of all ages — from newborns and children to adults and older individuals.
In many cases, genetic disorders may:
- Remain undiagnosed for years
- Present with complex or unusual symptoms
- Affect multiple organs or body systems
- Run within families across generations
Clinical genetics helps uncover the underlying cause of these conditions, allowing for:
- More accurate diagnosis
- Personalized medical care
- Earlier treatment and prevention
- Better long-term outcomes
- Family risk assessment and counseling
Advances in genomic medicine have transformed healthcare by enabling more precise and individualized approaches to diagnosis and treatment, often referred to as Precision Medicine.
Who Should Consider a Clinical Genetics Consultation?
You or your family may benefit from a Clinical Genetics Service if there are concerns such as:
In Children
- Developmental delay
- Autism spectrum disorder
- Intellectual disability
- Epilepsy or seizures
- Birth defects or congenital anomalies
- Rare or unexplained medical conditions
- Growth abnormalities
- Metabolic disorders
In Adults
- Strong family history of cancer
- Early-onset heart disease or stroke
- Familial high cholesterol
- Neurological disorders
- Recurrent unexplained symptoms
- Inherited eye, hearing, or muscle disorders
Reproductive and Pregnancy Concerns
- Recurrent miscarriage
- Infertility
- Family history of inherited disease
- Carrier screening before pregnancy
- Abnormal prenatal screening results
- Questions regarding prenatal genetic testing
What Happens During a Clinical Genetics Consultation?
A clinical genetics consultation usually includes several important steps.
1. Detailed Medical and Family History
The clinical geneticist will review:
- Personal medical history
- Developmental history
- Previous investigations
- Family history across multiple generations
This information helps identify possible inherited patterns or genetic risks.
2. Physical Examination
A focused physical examination may help identify clinical signs associated with specific genetic conditions.
3. Genetic Testing
If appropriate, genetic testing may be recommended. Depending on the clinical situation, testing may include:
- Chromosome analysis
- Chromosomal microarray
- Single-gene testing
- Gene panels
- Whole exome sequencing
- Whole genome sequencing
- Transcriptomic (RNA) sequencing
- Metabolic panels (amino acid, organic acid, acyl-carnitine profile)
These technologies can help identify genetic changes associated with disease.
4. Genetic Counseling
Genetic counseling is an essential part of care. Patients and families receive explanations regarding:
- Test results
- Disease mechanisms
- Inheritance patterns
- Medical implications
- Treatment options
- Family planning considerations
The goal is to help patients make informed and confident healthcare decisions.
What Conditions Can Clinical Genetics Help Diagnose?
Clinical Genetics Services evaluate a wide range of conditions, including:
- Chromosomal disorders
- Rare genetic syndromes
- Neurodevelopmental disorders
- Inherited neurological diseases
- Hereditary cancer syndromes
- Inherited cardiovascular disorders
- Metabolic diseases
- Mitochondrial disorders
- Connective tissue disorders
- Pharmacogenomic conditions
In some cases, genetics may also help explain psychiatric or behavioral conditions associated with neurodevelopmental disorders.
Bangkok Clinical Genetics 