Additional findings_Paediatric

Gene: PYGM

Green List (high evidence)

McCardle disease: glycogen storage disease type V (GSD5), characterized by onset of exercise intolerance and muscle cramps in childhood or adolescence. Transient myoglobinuria may occur after exercise, due to rhabdomyolysis. Severe myoglobinuria may lead to acute renal failure. Patients may report muscle weakness, myalgia, and lack of endurance since childhood or adolescence. Later in adult life, there is persistent and progressive muscle weakness and atrophy with fatty replacement. McArdle disease is a relatively benign disorder, except for possible renal failure as a complication of myoglobinuria
Not reviewed by Babyseq, included in NCNEXUS newborn screening list.
Actionable by controlled physical activity and programmed glucose intake.
Sources: Expert list

Created: 24 Sep 2020, 1:48 a.m.

Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal

Phenotypes
McCardle disease MIM# 608455