Prader Willi Syndrome
Sporadic Loss of paternal copy of chromosome 15q11
What is Friedrichs Ataxia?
Autosomal recessive ataxia by GAA trinucleotide repeat expansion. Presents with ataxia, scoliosis, dysarthria, endocrinopathy and cardiomyopathy.
What is Di George Syndrome?
Autosomal dominant condition from 22q deletion summarised by CATCH 22 mnemonic
Cardiac abnormalities Abnormal facies Thymic hypoplasia Cleft palate Hypoparathyroidism 22q deletion
NF 1 genetics
Autosomal dominant disorder of NF1 gene on chromosome 17q
Genetics of NF2
Autosomal dominant condition of NF2 gene on chromosome 22 - produces Merlin protein