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LMNB1

Chr 5q23.2

lamin B1

MANE:
ENST00000261366.10

Annotations refreshed 10 hours ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • Adult onset leukodystrophy

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • DDG2P

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Fetal anomalies

    MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
  • Inherited white matter disorders

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Intellectual disability

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Severe microcephaly

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • White matter disorders and cerebral calcification - narrow panel

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Early onset or syndromic epilepsy

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown

Disease associations (Open Targets)

  • microcephaly 26, primary, autosomal dominant

    0.72
  • Autosomal dominant microcephaly

    0.67
  • Adult-onset autosomal dominant leukodystrophy

    0.66
  • adult-onset autosomal dominant demyelinating leukodystrophy

    0.49
  • hereditary disease

    0.49
  • Syndrome with microcephaly as major feature

    0.49
  • Alzheimer disease

    0.37
  • neurodegenerative disease

    0.37
  • autosomal dominant primary microcephaly

    0.37
  • hypothyroidism

    0.32

Score is the Open Targets composite evidence score (0-1). Higher = stronger gene-disease association.

Protein function (UniProt)

Lamin-B1

Lamins are intermediate filament proteins that assemble into a filamentous meshwork, and which constitute the major components of the nuclear lamina, a fibrous layer on the nucleoplasmic side of the inner nuclear membrane (PubMed:28716252, PubMed:32910914). Lamins provide a framework for the nuclear envelope, bridging the nuclear envelope and chromatin, thereby playing an important role in nuclear assembly, chromatin organization, nuclear membrane and telomere dynamics (PubMed:28716252, PubMed:32910914). The structural integrity of the lamina is strictly controlled by the cell cycle, as seen by the disintegration and formation of the nuclear envelope in prophase and telophase, respectively (PubMed:28716252, PubMed:32910914). Plays a role in sperm morphological development during late stages of spermiogenesis, particularly the anchoring of the sperm head to the tail (PubMed:38870534). Component of the LMNB1/SUN5/SEPT12 bridge that connects the sperm proximal centriole to the implantation fossa, the bridge functions to prevent detachment of the proximal centriole from the posterior nucleus during spermiogenesis (PubMed:38870534)

Data sources: HGNC (CC BY 4.0), AlphaFold (CC BY 4.0, Jumper et al. Nature 2021), Genomics England PanelApp (CC BY 4.0), ClinGen, Open Targets (CC0), UniProt.

Not for sole clinical decision-making. Always verify against primary sources.