Dados do Trabalho
LIMB-GIRDLE MUSCULAR DYSTROPHY TYPE 2C, A CASE REPORT
Apresentação do caso
P.R.V, 9 years old, diagnosed in 2018 with Limb-Girdle Muscular Distrophy type 2 C (LGMD2C), associated with subclinical hypothyroidism, with altered thyroid stimulating hormone (TSH) levels, and electroneuromyography with a myopathic pattern. During early childhood, he presented unexplained fevers treated with medications that led to alterations in the aspartate aminotransferase and alanine aminotransferase enzymes and alterations in creatine phosphokinase. The family history includes a paternal aunt with amyotrophic lateral sclerosis. Pathogenic homozygous SGCG gene presenting the variant c525delT- ENST00000218867, with substitution of the phenylalanine in position 175 by a leucine, was identified in genetic screening.
The LGMD2C is a progressive neuromuscular disease, hereditary, rare and heterogeneous, and the symptoms are related to the impairment of the pelvic girdle, scapular and proximal extremity muscles. The incidence of this disease is 2 to 10 per 100,000 people, affecting both sexes equally. This myopathy is expressed in several ways and with varying degrees of severity, and its cause is associated with the absence or inadequate formation of proteins. This amino acid change causes deficiency of the gamma-sarcoglycan protein and, consequently, muscle damage and degeneration. Symptoms may manifest in the first year of life or throughout early childhood and school life. The current classification of LGMD2C is based on the form of inheritance, which can be autosomal dominant (type 1) or autosomal recessive (type 2), and on molecular analyses. The drugs used in the treatment of LGMD2C aim to slow the progression of the disease but not to correct the genetic defect, and genetic counseling is recommended.
LGMD2C is a myopathy that causes functional disability in those affected. There is still no pharmacological treatment that aims at a cure, so the objective is to maintain the quality of life and provide functional independence to the patients. To this end, it is necessary to evaluate individuals affected by CMD in the same family to understand the evolution of the disease and develop a unique therapeutic plan.
Referências (se houver)
CORDEIRO, S. A; GAIAD, T. P. Functional evolution of girdle-type muscular dystrophy in individuals from the same family. R. bras. Ci. e Mov 2015;23(4): 104- 114.
GARCÍA MORALES, I. et al. Gamma-sarcoglinopathy. Two new cases in a gitana family in Spain. Neurology Journal, v. 29, n. 04, page. 299, 1999.
Conflict of interest declaration of ALL authors: all authors declare that they have no conflict of interest of any kind
Muscular Dystrophies, Muscle Diseases and Motor Skills Disorders
Fonte de Fomento (se houver)
Declaração de conflito de interesses de TODOS os autores
all authors declare that they have no conflict of interest of any kind
Centro Universitário UNINORTE - Acre - Brasil, Hospital da Criança- SASMAC - Acre - Brasil, Universidade Federal do Acre - Acre - Brasil
Bruna Cruz Borges Beyruth, Thais Roberta Jonson Gonçalves, Evelyn Vieira da Silva, Adriele Souza De Lima, Pedro Lucas Gomes Lima, Larissa Maria Paula Rebouças da Costa, Bethania Freitas Rodrigues Ribeiro, Catarina Souza, Thais Silva de Oliveira