ELP1 and Riley-Day syndrome: Hereditary sensory and autonomic neuropathy type III (HSAN type III) results from an autosomal recessive genetic mutation on chromosome 9q that causes a deficiency of IκB kinase complex‐associated protein (IKBKAP), leading to a reduction in expression of elongator complex protein 1 (ELP‐1) (Anderson et al., 2001; Blumenfeld et al., 1993; Slaugenhaupt et al., 2001).