Rubinstein–Taybi Syndrome
Rubinstein-Taybi Syndrome (RTS) is a rare genetic disorder characterised by physical, cognitive, and developmental abnormalities. It is caused by mutations or deletions in the CREBBP or EP300 genes, which are involved in regulating gene expression and development. The majority of RTS cases are sporadic, meaning they occur randomly without a family history. However, in some cases, RTS can be inherited from a parent who carries the genetic mutation. The specific genetic changes in the mentioned genes lead to the characteristic features and symptoms of RTS. The prevalence of RTS is estimated to be around 1 in 100,000 to 1 in 125,000 live births, affecting males and females in equal numbers.
RTS is associated with a variety of physical and developmental features, including:
- Physical abnormalities: Individuals with RTS often have distinctive facial features, such as downward-slanting eyes, broad thumbs and toes, a beaked nose, and a prominent forehead. They may also have growth delays, skeletal abnormalities, and heart defects.
- Intellectual disability: Most individuals with RTS have some degree of intellectual disability, ranging from mild to moderate. They may have delays in language development, learning difficulties, and impaired executive functioning.
- Behavioural issues: Individuals with RTS may exhibit behavioural problems, including attention-deficit/hyperactivity disorder (ADHD), aggression, self-injurious behaviours, and impulsivity. Repetitive behaviours are also a common feature of RTS.
While individuals with RTS and ASD both exhibit repetitive behaviours, those with RTS do not generally demonstrate the same social impairments as those on the autism spectrum. Furthermore, the physical abnormalities of RTS are not part of the clinical presentation of ASD.
The diagnosis of RTS is made through genetic testing and clinical observations and evaluations of the individual’s physical and cognitive presentations. Treatment and intervention strategies are aimed at managing the symptoms and providing support for individuals with the syndrome. The management of RTS often involves a multidisciplinary approach, with a team of healthcare professionals including paediatricians, geneticists, orthopaedic specialists, speech and language therapists, and occupational therapists. Intervention plans may include physical therapy and occupational therapy to address motor delays and improve fine and gross motor skills. Speech therapy is often utilised to assist with communication difficulties and language development.
Reference
Milani, D., Manzoni, F. M., Pezzani, L., Ajmone, P., Gervasini, C., Menni, F., el al. (2015). Rubinstein-Taybi syndrome: Clinical features, genetic basis, diagnosis, and management. Italian Journal of Pediatrics, 20(41):4
