Alternative titles and symbols : Mfm, fatal infantile hypertonic, alpha-b crystallin-related;
Description : Fatal infantile hypertonic myofibrillar myopathy is a severe autosomal recessive muscular
dystrophy with onset in the first weeks of life after a normal neonatal period. Affected
infants show rapidly progressive muscular rigidity of the trunk and limbs associated
with increasing respiratory difficulty resulting in death before age 3 years (summary
by Del Bigio et al., 2011).;
Inheritance : Autosomal recessive;
Molecular basis : Caused by mutation in the alpha-B crystallin gene (CRYAB, 123590.0005);