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Autosomal recessive limb-girdle muscular dystrophy type 2E(LGMDR4)

MedGen UID:
347674
Concept ID:
C1858593
Disease or Syndrome
Synonyms: Beta-sarcoglycan limb-girdle muscular dystrophy; LGMDR4; Limb-girdle muscular dystrophy, type 2E; Muscular dystrophy limb-girdle with beta-sarcoglycan deficiency; MUSCULAR DYSTROPHY, LIMB-GIRDLE, AUTOSOMAL RECESSIVE 4
SNOMED CT: Autosomal recessive limb girdle muscular dystrophy type 2E (718850008); Limb girdle muscular dystrophy due to beta-sarcoglycan deficiency (718850008)
Modes of inheritance:
Autosomal recessive inheritance
MedGen UID:
141025
Concept ID:
C0441748
Intellectual Product
Source: Orphanet
A mode of inheritance that is observed for traits related to a gene encoded on one of the autosomes (i.e., the human chromosomes 1-22) in which a trait manifests in individuals with two pathogenic alleles, either homozygotes (two copies of the same mutant allele) or compound heterozygotes (whereby each copy of a gene has a distinct mutant allele).
 
Gene (location): SGCB (4q12)
 
Monarch Initiative: MONDO:0011423
OMIM®: 604286
Orphanet: ORPHA119

Definition

Limb-girdle muscular dystrophies are characterized clinically by predominantly proximal muscle weakness of variable severity and dystrophic changes on muscle biopsy. LGMDR4 is in general a severe form of the disorder, with some patients developing symptoms before 8 years of age and losing the ability to ambulate in their second decade. Some patients have a milder course, with weakness evident in the teenage years and loss of walking ability in their fourth decade (summary by Lim et al., 1995 and Bonnemann et al., 1996). For a general phenotypic description and a discussion of genetic heterogeneity of autosomal recessive limb-girdle muscular dystrophy, see LGMDR1 (253600). [from OMIM]

Clinical features

From HPO
Scapular winging
MedGen UID:
66822
Concept ID:
C0240953
Anatomical Abnormality
Abnormal protrusion of the scapula away from the surface of the back.
Calf muscle pseudohypertrophy
MedGen UID:
374276
Concept ID:
C1839666
Finding
Enlargement of the muscles of the calf due to their replacement by connective tissue or fat.
Shoulder girdle muscle atrophy
MedGen UID:
339837
Concept ID:
C1847766
Finding
Amyotrophy affecting the muscles of the shoulder girdle.
Limb-girdle muscle weakness
MedGen UID:
347625
Concept ID:
C1858127
Finding
Weakness of the limb-girdle muscles (also known as the pelvic and shoulder girdles), that is, lack of strength of the muscles around the shoulders and the pelvis.
Primary dilated cardiomyopathy
MedGen UID:
2880
Concept ID:
C0007193
Disease or Syndrome
Familial dilated cardiomyopathy is a genetic form of heart disease. It occurs when heart (cardiac) muscle becomes thin and weakened in at least one chamber of the heart, causing the open area of the chamber to become enlarged (dilated). As a result, the heart is unable to pump blood as efficiently as usual. To compensate, the heart attempts to increase the amount of blood being pumped through the heart, leading to further thinning and weakening of the cardiac muscle. Over time, this condition results in heart failure.\n\nIt usually takes many years for symptoms of familial dilated cardiomyopathy to cause health problems. They typically begin in mid-adulthood, but can occur at any time from infancy to late adulthood. Signs and symptoms of familial dilated cardiomyopathy can include an irregular heartbeat (arrhythmia), shortness of breath (dyspnea), extreme tiredness (fatigue), fainting episodes (syncope), and swelling of the legs and feet. In some cases, the first sign of the disorder is sudden cardiac death. The severity of the condition varies among affected individuals, even in members of the same family.
Loss of ambulation
MedGen UID:
332305
Concept ID:
C1836843
Finding
Inability to walk in a person who previous had the ability to walk.
Muscular dystrophy
MedGen UID:
44527
Concept ID:
C0026850
Disease or Syndrome
The term dystrophy means abnormal growth. However, muscular dystrophy is used to describe primary myopathies with a genetic basis and a progressive course characterized by progressive skeletal muscle weakness and wasting, defects in muscle proteins, and histological features of muscle fiber degeneration (necrosis) and regeneration. If possible, it is preferred to use other HPO terms to describe the precise phenotypic abnormalities.
Pelvic girdle muscle atrophy
MedGen UID:
66014
Concept ID:
C0240679
Finding
Muscular atrophy affecting the muscles that attach to the pelvic girdle (the gluteal muscles, the lateral rotators, adductor magnus, adductor brevis, adductor longus, pectineus, and gracilis muscles).
Proximal amyotrophy
MedGen UID:
342591
Concept ID:
C1850794
Disease or Syndrome
Amyotrophy (muscular atrophy) affecting the proximal musculature.
Elevated circulating creatine kinase concentration
MedGen UID:
69128
Concept ID:
C0241005
Finding
An elevation of the level of the enzyme creatine kinase (also known as creatine phosphokinase (CK; EC 2.7.3.2) in the blood. CK levels can be elevated in a number of clinical disorders such as myocardial infarction, rhabdomyolysis, and muscular dystrophy.

Term Hierarchy

CClinical test,  RResearch test,  OOMIM,  GGeneReviews,  VClinVar  
  • CROGVAutosomal recessive limb-girdle muscular dystrophy type 2E
Follow this link to review classifications for Autosomal recessive limb-girdle muscular dystrophy type 2E in Orphanet.

Recent clinical studies

Etiology

Alavi A, Esmaeili S, Nilipour Y, Nafissi S, Tonekaboni SH, Zamani G, Ashrafi MR, Kahrizi K, Najmabadi H, Jazayeri F
J Neurogenet 2017 Sep;31(3):161-169. Epub 2017 Jul 7 doi: 10.1080/01677063.2017.1346093. PMID: 28687063

Diagnosis

Vainzof M, Souza LS, Gurgel-Giannetti J, Zatz M
Neuromuscul Disord 2021 Oct;31(10):1021-1027. Epub 2021 Jul 28 doi: 10.1016/j.nmd.2021.07.014. PMID: 34404573
Xie Z, Hou Y, Yu M, Liu Y, Fan Y, Zhang W, Wang Z, Xiong H, Yuan Y
Orphanet J Rare Dis 2019 Feb 14;14(1):43. doi: 10.1186/s13023-019-1021-9. PMID: 30764848Free PMC Article

Prognosis

Xie Z, Hou Y, Yu M, Liu Y, Fan Y, Zhang W, Wang Z, Xiong H, Yuan Y
Orphanet J Rare Dis 2019 Feb 14;14(1):43. doi: 10.1186/s13023-019-1021-9. PMID: 30764848Free PMC Article
Bönnemann CG, Passos-Bueno MR, McNally EM, Vainzof M, de Sá Moreira E, Marie SK, Pavanello RC, Noguchi S, Ozawa E, Zatz M, Kunkel LM
Hum Mol Genet 1996 Dec;5(12):1953-61. doi: 10.1093/hmg/5.12.1953. PMID: 8968749

Clinical prediction guides

Xie Z, Hou Y, Yu M, Liu Y, Fan Y, Zhang W, Wang Z, Xiong H, Yuan Y
Orphanet J Rare Dis 2019 Feb 14;14(1):43. doi: 10.1186/s13023-019-1021-9. PMID: 30764848Free PMC Article
Alavi A, Esmaeili S, Nilipour Y, Nafissi S, Tonekaboni SH, Zamani G, Ashrafi MR, Kahrizi K, Najmabadi H, Jazayeri F
J Neurogenet 2017 Sep;31(3):161-169. Epub 2017 Jul 7 doi: 10.1080/01677063.2017.1346093. PMID: 28687063
Mojbafan M, Nilipour Y, Tonekaboni SH, Bagheri SD, Bagherian H, Sharifi Z, Zeinali Z, Tavakkoly-Bazzaz J, Zeinali S
J Neurogenet 2016 Mar;30(1):1-4. doi: 10.3109/01677063.2016.1141208. PMID: 27276190

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