Short answer · Medically reviewed summary · Last updated: 2023-07-13
Snyder-Robinson Syndrome (SRS) is a rare genetic disorder that primarily affects males. It is characterized by intellectual disability, muscle and bone abnormalities, and distinctive facial features.
1 people with Snyder-Robinson Syndrome have shared their first-person experience on this question at DiseaseMaps.
Is Snyder-Robinson Syndrome hereditary?
Is Snyder-Robinson Syndrome hereditary? The genetic component explained in plain language, reviewed against medical sources, with patient experiences.
Snyder-Robinson Syndrome (SRS) is a rare genetic disorder that primarily affects males. It is characterized by intellectual disability, muscle and bone abnormalities, and distinctive facial features. SRS is caused by mutations in the Spermine Synthase (SMS) gene, which is located on the X chromosome.
Being an X-linked disorder, SRS follows a specific inheritance pattern. Females have two X chromosomes, while males have one X and one Y chromosome. If a female carries a mutation in one of her X chromosomes, she is considered a carrier and typically does not show symptoms of the disorder. However, there is a 50% chance that she will pass the mutated gene to her children.
In males, who have only one X chromosome, a single mutation in the SMS gene is sufficient to cause SRS. As a result, if a male inherits the mutated gene from his carrier mother, he will be affected by the syndrome. It is important to note that SRS is typically not inherited from the father, as he passes his Y chromosome to his sons.
Genetic testing can be performed to confirm a diagnosis of Snyder-Robinson Syndrome. If a family has a known history of SRS or if there are concerns about the disorder, consulting with a genetic counselor or a healthcare professional with expertise in genetics is recommended.
Understanding the hereditary nature of Snyder-Robinson Syndrome is crucial for families affected by the disorder. Genetic counseling and testing can provide valuable information about the risk of passing on the condition and help individuals make informed decisions regarding family planning.
As per medline.com, "This condition is inherited in an X-linked recessive pattern. The gene associated with this condition is located on the X chromosome, which is one of the two sex chromosomes . In males (who have only one X chromosome), one altered copy of the gene in each cell is sufficient to cause the condition."
Posted Dec 20, 2022 by Chris 600
