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FLG

Chr 1q21.3

filaggrin

Aliases:
FLG1, FLG-1
MANE:
ENST00000368799.2

Annotations refreshed 1 month ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • Ichthyosis and erythrokeratoderma

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Palmoplantar keratodermas

    MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
  • DDG2P

    BIALLELIC, autosomal or pseudoautosomal
  • Rare genetic inflammatory skin disorders

    BOTH monoallelic and biallelic (but BIALLELIC mutations cause a more SEVERE disease form), autosomal or pseudoautosomal

Disease associations (Open Targets)

  • atopic eczema

    0.81
  • ichthyosis vulgaris

    0.75
  • Eczematoid dermatitis

    0.75
  • asthma

    0.74
  • dermatitis

    0.70
  • skin disorder

    0.69
  • Abnormality of the skeletal system

    0.68
  • childhood onset asthma

    0.67
  • dermatophytosis

    0.66
  • contact dermatitis

    0.65

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

Protein function (UniProt)

Fibroblast growth factor receptor 1

Tyrosine-protein kinase that acts as a cell-surface receptor for fibroblast growth factors and plays an essential role in the regulation of embryonic development, cell proliferation, differentiation and migration. Required for normal mesoderm patterning and correct axial organization during embryonic development, normal skeletogenesis and normal development of the gonadotropin-releasing hormone (GnRH) neuronal system. Phosphorylates PLCG1, FRS2, GAB1 and SHB. Ligand binding leads to the activation of several signaling cascades. Activation of PLCG1 leads to the production of the cellular signaling molecules diacylglycerol and inositol 1,4,5-trisphosphate. Phosphorylation of FRS2 triggers recruitment of GRB2, GAB1, PIK3R1 and SOS1, and mediates activation of RAS, MAPK1/ERK2, MAPK3/ERK1 and the MAP kinase signaling pathway, as well as of the AKT1 signaling pathway. Promotes phosphorylation of SHC1, STAT1 and PTPN11/SHP2. In the nucleus, enhances RPS6KA1 and CREB1 activity and contributes to the regulation of transcription. FGFR1 signaling is down-regulated by IL17RD/SEF, and by FGFR1 ubiquitination, internalization and degradation

Curated MONDO disease pages that list FLG among their top associated genes.

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.