objectives: hearing loss (hl) is the most common sensory disorder, and affects 1 in 1000 newborns. about 50% of hl is due to genetics and 70% of them are non-syndromic with a recessive pattern of inheritance. up to now, more than 50 genes have been detected which are responsible for autosomal recessive non-syndromic hearing loss, (arnshl). in  iran, hl is one of the most common disabilities due...

cutis laxa is an acquired or inherited condition characterized by redundant, sagging and inelastic skin.  the inherited form is heterogeneous condition with autosomal dominant, autosomal recessive and x-linked inheritance.  autosomal dominant cutis laxa is divided into three types, type i, ii and iii and the responsible genes are eln, fbln5 and aldh18a1 respectively. an x-linked form of cutis l...