Health Dictionary Find a Doctor

F8A1

Factor VIII intron 22 protein is a protein that in humans is encoded by the F8A1 gene.[1][2]

This gene is contained entirely within intron 22 of the factor VIII gene; spans less than 2 kb, and is transcribed in the direction opposite of factor VIII. A portion of intron 22 (int22h), containing F8A, is repeated twice extragenically closer to the Xq telomere. Although its function is unknown, the observation that this gene is conserved in the mouse implies it has some function. Unlike factor VIII, this gene is transcribed abundantly in a wide variety of cell types.[2]

References

References

  1. Levinson B, Kenwrick S, Lakich D, Hammonds G Jr, Gitschier J (Jun 1990). “A transcribed gene in an intron of the human factor VIII gene”. Genomics. 7 (1): 1–11. doi:10.1016/0888-7543(90)90512-S. PMID 2110545.
  2. 2.0 2.1 “Entrez Gene: F8A1 coagulation factor VIII-associated (intronic transcript) 1”.
Further reading

Further reading



Looking for the patient version?

Back to the patient-friendly article

© 2026 MyEClinic – IFTM Institut für Telematik in der Medizin GmbH