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DIAPH1

Chr 5q31.3

diaphanous related formin 1

Aliases:
hDIA1, LFHL1, mDia1
MANE:
ENST00000389054.8

Annotations refreshed 1 month ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • Bleeding and platelet disorders

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

    BIALLELIC, autosomal or pseudoautosomal
  • Fetal anomalies

    BIALLELIC, autosomal or pseudoautosomal
  • Inherited bleeding disorders

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

    BIALLELIC, autosomal or pseudoautosomal
  • Monogenic hearing loss

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Primary immunodeficiency or monogenic inflammatory bowel disease

    BIALLELIC, autosomal or pseudoautosomal
  • Severe microcephaly

    BIALLELIC, autosomal or pseudoautosomal

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Disease associations (Open Targets)

  • progressive microcephaly-seizures-cortical blindness-developmental delay syndrome

    0.77
  • autosomal dominant nonsyndromic hearing loss 1

    0.76
  • DIAPH1-related sensorineural hearing loss-thrombocytopenia syndrome

    0.46
  • deafness

    0.46
  • Global developmental delay

    0.43
  • Intellectual disability

    0.41
  • hearing loss disorder

    0.38
  • Moyamoya disease

    0.37
  • neurodegenerative disease

    0.37
  • nonsyndromic genetic hearing loss

    0.37

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

Protein function (UniProt)

Protein diaphanous homolog 1

Actin nucleation and elongation factor required for the assembly of F-actin structures, such as actin cables and stress fibers (By similarity). Binds to the barbed end of the actin filament and slows down actin polymerization and depolymerization (By similarity). Required for cytokinesis, and transcriptional activation of the serum response factor (By similarity). DFR proteins couple Rho and Src tyrosine kinase during signaling and the regulation of actin dynamics (By similarity). Functions as a scaffold protein for MAPRE1 and APC to stabilize microtubules and promote cell migration (By similarity). Has neurite outgrowth promoting activity. Acts in a Rho-dependent manner to recruit PFY1 to the membrane (By similarity). In hear cells, it may play a role in the regulation of actin polymerization in hair cells (PubMed:20937854, PubMed:21834987, PubMed:26912466). The MEMO1-RHOA-DIAPH1 signaling pathway plays an important role in ERBB2-dependent stabilization of microtubules at the cell cortex (PubMed:20937854, PubMed:21834987). It controls the localization of APC and CLASP2 to the cell membrane, via the regulation of GSK3B activity (PubMed:20937854, PubMed:21834987). In turn, membrane-bound APC allows the localization of the MACF1 to the cell membrane, which is required for microtubule capture and stabilization (PubMed:20937854, PubMed:21834987). Plays a role in the regulation of cell morphology and cytoskeletal organization. Required in the control of cell shape (PubMed:20937854, PubMed:21834987). Plays a role in brain development (PubMed:24781755). Also acts as an actin nucleation and elongation factor in the nucleus by promoting nuclear actin polymerization inside the nucleus to drive serum-dependent SRF-MRTFA activity (By similarity)

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.