Laboratory for Molecular Diagnostics
Center for Nephrology and Metabolic Disorders

Berardinelli-Seip congenital lipodystrophy 2 (seipin)

The BSCL2 gene encodes the multi-pass transmembrane protein protein called seipin. Its function is associated with the formation of lipid droplets. Loss-of-function mutations cause autosomal recessive congenital generalized lipodystrophy type 2 or Berardinelli-Seip syndrome, a motor neuropathy, and a spastic paraplegia.

Genetests:

Clinic Method Carrier testing
Turnaround 5 days
Specimen type genomic DNA
Clinic Method Genomic sequencing of the entire coding region
Turnaround 25 days
Specimen type genomic DNA
Clinic Method Massive parallel sequencing
Turnaround 25 days
Specimen type genomic DNA

Related Diseases:

Spastic paraplegia 17 with amyotrophy of hands and feet
BSCL2
Hereditary distal motor neuron neuropathy type 5A
BSCL2
Congenital generalized lipodystrophy type 2
BSCL2

References:

1.

None (1946) Lipodystrophy and hepatomegaly, with diabetes, lipaemia, and other metabolic disturbances; a case throwing new light on the action of insulin.

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2.

Fu M et al. (2004) Mutations in Gng3lg and AGPAT2 in Berardinelli-Seip congenital lipodystrophy and Brunzell syndrome: phenotype variability suggests important modifier effects.

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3.

Auer-Grumbach M et al. (2000) Phenotypic and genotypic heterogeneity in hereditary motor neuronopathy type V: a clinical, electrophysiological and genetic study.

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4.

Magré J et al. (2001) Identification of the gene altered in Berardinelli-Seip congenital lipodystrophy on chromosome 11q13.

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5.

Bhayana S et al. (2002) Cardiomyopathy in congenital complete lipodystrophy.

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6.

Windpassinger C et al. (2003) Refinement of the Silver syndrome locus on chromosome 11q12-q14 in four families and exclusion of eight candidate genes.

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7.

Windpassinger C et al. (2004) Heterozygous missense mutations in BSCL2 are associated with distal hereditary motor neuropathy and Silver syndrome.

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8.

Ebihara K et al. (2004) Gene and phenotype analysis of congenital generalized lipodystrophy in Japanese: a novel homozygous nonsense mutation in seipin gene.

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9.

Auer-Grumbach M et al. (2005) Phenotypes of the N88S Berardinelli-Seip congenital lipodystrophy 2 mutation.

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10.

van de Warrenburg BP et al. (2006) BSCL2 mutations in two Dutch families with overlapping Silver syndrome-distal hereditary motor neuropathy.

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11.

Lundin C et al. (2006) Membrane topology of the human seipin protein.

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12.

Ionasescu VV et al. (1991) Heterogeneity in X-linked recessive Charcot-Marie-Tooth neuropathy.

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13.

Ito D et al. (2007) Molecular pathogenesis of seipin/BSCL2-related motor neuron diseases.

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14.

Szymanski KM et al. (2007) The lipodystrophy protein seipin is found at endoplasmic reticulum lipid droplet junctions and is important for droplet morphology.

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15.

Ito D et al. (2008) Characterization of seipin/BSCL2, a protein associated with spastic paraplegia 17.

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16.

Ito D et al. (2009) Seipinopathy: a novel endoplasmic reticulum stress-associated disease.

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17.

Friguls B et al. () Severe cardiac phenotype of Berardinelli-Seip congenital lipodystrophy in an infant with homozygous E189X BSCL2 mutation.

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18.

Brusse E et al. (2009) A novel 16p locus associated with BSCL2 hereditary motor neuronopathy: a genetic modifier?

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19.

Cui X et al. (2011) Seipin ablation in mice results in severe generalized lipodystrophy.

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20.

Chaudhry R et al. (2013) Re-analysis of an original CMTX3 family using exome sequencing identifies a known BSCL2 mutation.

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Update: Sept. 26, 2018