Last updated on: 22.11.2022

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The ACTRT1 gene (ACTRT1 stands for Actin Related Protein T1) is a protein coding gene located on chromosome Xq25.

General information
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The ACTRT1 gene encodes a protein related to the cytoskeletal protein beta-actin. This protein is a major component of the calyx in the perinuclear theca of mammalian sperm heads and therefore likely has a function in spermatid formation. This gene is intronless and is similar to a related gene located on chromosome 1.

Diseases associated with ACTRT1 include:

  • Bazex-Dupré-Christol syndrome.

The encoded protein negatively regulates Hedgehog (SHH) signaling.

Binds to the promoter of the SHH signaling mediator GLI1 and inhibits its expression.

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  1. Bal E et al. (2017) Mutations in ACTRT1 and its enhancer RNA elements lead to aberrant activation of
  2. Hedgehog signaling in inherited and sporadic basal cell carcinomas. Nat Med 23:1226-1233.
  3. Bazex A, Dupré A, Christol B (1966) Atrophoderma folliculaire, proliférations baso-cellulaires et hypotrichosis. Ann Dermatol Syphiligr (Paris) 93: 241-254.
  4. Buxtorf K et al (2001) Bazex syndrome. Dermatology 202: 350-352
  5. Gill D et al (2001) Bullous lesions in Bazex syndrome and successful treatment with oral psoralen phototherapy. Australas J Dermatol 42: 278-280
  6. Plosila M, Kiistala R, Niemi KM (1981) The Bazex syndrome: follicular atrophoderma with multiple basal cell carcinoma, hypotrichosis and hypohidrosis. Clin Exp Dermatol 6: 31-41

Last updated on: 22.11.2022