title: Intranuclear rods myopathy with autonomic dysfunction.
abstract: Intranuclear rods myopathy (IRM), a variant of nemaline myopathy (NM), is characterized by rod structure in the myonuclei. Patients with IRM present with similar symptoms to those of severe infantile-type NM but have worse outcome. Several extramuscular manifestations have been reported in NM but no dysautonomia. We herein report a 2-year-old girl with IRM and a heterozygous mutation, c.430C>T (p.L144F) in ACTA1. During the infancy, the patient showed severe diaphoresis and facial flushing. Arrhythmia and hypertension with the precipitating factors of feeding, defecation, and urination were observed. Sympathetic antagonist was prescribed and showed some effectiveness. Our report may widen the clinical spectrum of IRM. It also reminds clinicians that autonomic dysfunction may occur in patients with IRM or other actinopathies and appropriate treatment may be necessary.
authors.affiliation: Departments of Pediatrics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.
authors.forename: Po-Ching
authors.initials: PC
authors.lastname: Chou
authors.forename: Wen-Chen
authors.initials: WC
authors.lastname: Liang
authors.forename: Ikuya
authors.initials: I
authors.lastname: Nonaka
authors.forename: Satomi
authors.initials: S
authors.lastname: Mitsuhashi
authors.forename: Ichizo
authors.initials: I
authors.lastname: Nishino
authors.forename: Yuh-Jyh
authors.initials: YJ
authors.lastname: Jong
mesh_terms: D000199:Actins / Q000235:genetics*; D001342:Autonomic Nervous System Diseases / Q000209:etiology*; D002675:Child, Preschool; D005260:Female; D006801:Humans; D009154:Mutation; D017696:Myopathies, Nemaline / Q000150:complications* / Q000235:genetics*
chemical_list: D000199:Actins