Diagnosis of Pompe disease: muscle biopsy vs blood-based assays
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Diagnosis of Pompe disease: muscle biopsy vs blood-based assays. / Vissing, John; Lukacs, Zoltan; Straub, Volker.
in: JAMA NEUROL, Jahrgang 70, Nr. 7, 01.07.2013, S. 923-7.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Diagnosis of Pompe disease: muscle biopsy vs blood-based assays
AU - Vissing, John
AU - Lukacs, Zoltan
AU - Straub, Volker
PY - 2013/7/1
Y1 - 2013/7/1
N2 - The diagnosis of Pompe disease (acid maltase deficiency, glycogen storage disease type II) in children and adults can be challenging because of the heterogeneous clinical presentation and considerable overlap of signs and symptoms found in other neuromuscular diseases. This review evaluates some of the methods used in the diagnosis and differential diagnosis of late-onset Pompe disease. Muscle biopsy is commonly used as an early diagnostic tool in the evaluation of muscle disease. However, experience has shown that relying solely on visualizing a periodic acid-Schiff-positive vacuolar myopathy to identify late-onset Pompe disease often leads to false-negative results and subsequent delays in identification and treatment of the disorder. Serum creatine kinase level can be normal or only mildly elevated in late-onset Pompe disease and is not very helpful alone to suggest the diagnosis, but in combination with proximal and axial weakness it may raise the suspicion for Pompe disease. A simple blood-based assay to measure the level of α-glucosidase activity is the optimal initial test for confirming or excluding Pompe disease. A timely and accurate diagnosis of late-onset Pompe disease likely will improve patient outcomes as care standards including enzyme replacement therapy can be applied and complications can be anticipated. Increased awareness of the clinical phenotype of Pompe disease is therefore warranted to expedite diagnostic screening for this condition with blood-based enzymatic assays.
AB - The diagnosis of Pompe disease (acid maltase deficiency, glycogen storage disease type II) in children and adults can be challenging because of the heterogeneous clinical presentation and considerable overlap of signs and symptoms found in other neuromuscular diseases. This review evaluates some of the methods used in the diagnosis and differential diagnosis of late-onset Pompe disease. Muscle biopsy is commonly used as an early diagnostic tool in the evaluation of muscle disease. However, experience has shown that relying solely on visualizing a periodic acid-Schiff-positive vacuolar myopathy to identify late-onset Pompe disease often leads to false-negative results and subsequent delays in identification and treatment of the disorder. Serum creatine kinase level can be normal or only mildly elevated in late-onset Pompe disease and is not very helpful alone to suggest the diagnosis, but in combination with proximal and axial weakness it may raise the suspicion for Pompe disease. A simple blood-based assay to measure the level of α-glucosidase activity is the optimal initial test for confirming or excluding Pompe disease. A timely and accurate diagnosis of late-onset Pompe disease likely will improve patient outcomes as care standards including enzyme replacement therapy can be applied and complications can be anticipated. Increased awareness of the clinical phenotype of Pompe disease is therefore warranted to expedite diagnostic screening for this condition with blood-based enzymatic assays.
KW - Adult
KW - Biopsy
KW - Child
KW - Diagnosis, Differential
KW - Disease Progression
KW - Glycogen Storage Disease Type II
KW - Hematologic Diseases
KW - Humans
KW - Muscle, Skeletal
U2 - 10.1001/2013.jamaneurol.486
DO - 10.1001/2013.jamaneurol.486
M3 - SCORING: Journal article
C2 - 23649721
VL - 70
SP - 923
EP - 927
JO - JAMA NEUROL
JF - JAMA NEUROL
SN - 2168-6149
IS - 7
ER -