SMA tipo 3 (enfermedad de. Kugelberg-Welander o SMA leve). Algunas fuentes describen a la SMA tipo. 3 como un tipo de SMA que comienza en cualquier. enfermedad, en el Consorcio Internacional de la Atrofia Muscular Espinal clasificó AME tipo III o enfermedad de Kugelberg Welander: Es la forma más. A number sign (#) is used with this entry because the Finkel type of late-onset autosomal dominant spinal muscular atrophy (SMAFK) is caused by heterozygous.

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Kugelberg Welander Syndrome – NORD (National Organization for Rare Disorders)

Ann Neurol ; The risk is the same for males and females. Am J Dis Child. In GM2 gangliosidosis, variant B1, clinical signs are identical to those found in the juvenile and adult forms of variant B.

Chromosomes, which are present in the nucleus of human cells, carry the genetic information for each individual. The most severe form is present at birth, inherited as an X- Linked genetic trait, and presents with severe respiratory muscle weakness.

J Bone Joint Surg Am ; A less severe form is present at birth or early childhood, progresses slowly and is inherited as an autosomal recessive genetic trait. Strober JB, et al. Symptoms of the following disorders can be similar to those of Kugelberg Welander syndrome.

Three of the families met the criteria proposed by Pearn Two different clinical forms exist. The second is that of juvenile spinal amyotrophy resembling Kugelberg-Welander’s syndrome. All had proximal muscle weakness and atrophy. A prospective study of SMA before age six years. Disease definition GM2 gangliosidosis, variant B or Tay-Sachs disease is marked by accumulation of G2 gangliosides due to hexosaminidase A deficiency.


The least severe of the three forms of is inherited as an autosomal dominant genetic trait, presents between the first and third decades of life and is slowly progressive.

The enzyme activator required for hydrolysing GM2 is deficient.

Atrofia muscular espinal: Caracterización clínica, electrofisiológica y molecular de 26 pacientes

Years Published,, Prior to the availability of molecular testing, neurophysiologic studies and muscle biopsy were used for diagnosis, but these tests are no longer necessary unless SMN gene testing is normal. Long-term survival in Werdnig-Hoffmann disease. Medical Genetics Information Resource database online. Alleviating neurodegeneration by an anticancer agent: Urbanek K et al.

Spinal muscular atrophy is characterized by degeneration of the anterior horn cells in the spinal cord, leading to kkgelberg-welander muscle weakness and wasting. Liu YB, et al. Recessive genetic disorders occur when an individual inherits the same abnormal gene for the same trait from each parent.

Rare Disease Database

While the OMIM database is open to the public, users seeking information about a personal medical or genetic condition are urged to consult with a qualified physician for diagnosis and for answers to personal questions. The relationship between specific mutations in the SMN gene and nearby genes and the severity of SMA is kugeblerg-welander being investigated so classification of SMA subdivisions is based on age of onset of symptoms and maximum function achieved as opposed to enfermeedad genetic profile.


The genetic confirmation of the disease by PCR technique followed by restriction fragment length polymorphism method disclosed the SMN1 gene deletion in all 26 cases. Symptoms of Kugelberg Welander syndrome occur after 12 months of age. The survival motor neuron protein in spinal muscular atrophy.

Am J Hum Genet ; The diagnosis was suspected on clinical and electrophysiological criteria.

CC HPO: If enfermwdad individual receives one normal gene and one gene for the disease, the person will be a carrier for the disease, but usually will enfetmedad show symptoms. Rev Med Chile ; Type 3 spinal muscular atrophy Kugelberg-Welander disease. Summary and related texts. Mental capacities and behaviour may or may not be affected. All types of proximal spinal muscular atrophy SMA including Kugelberg Welander syndrome are caused by mutations in the SMN survival motor neuron gene at chromosomal locus 5qq They identified the same mutation in another 3 families with ALS8 and in 1 family in which some patients had typical, and others atypical, ALS.

Retrospective multicenter analysis of patients with SMA assessed between and Kugelberg Welander syndrome is a milder type of kugelbeg-welander muscular atrophy. Phenotypic variability in siblings with type III spinal muscular atrophy.

The causative gene HEXA encodes the alpha subunit of hexosaminidase A and is located on chromosome 15 15q