Parents

Clinical features
A mutation in ABCA2 gene can lead to a constellation of birth defects in humans termed Intellectual developmental disorder with poor growth and with or without seizures or ataxia (IDPOGSA). These birth defects are variable in severity. Additional features that may be seen include a smaller-than-normal head and facial features that may be different from those common in the family.

Prevalence
Largely unknown due to limited data.

Inheritance
Mutations of this gene can be passed on to the next generation in an autosomal recessive manner. This means that if both parents carry a mutation involving this gene (usually without displaying the disease), there is a greater chance that their children are going to inherit the mutations from both parents and display the disease. This is especially important to consider in consanguineous marriage, where the chance of both parents having the same mutation and passing it is greater.