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Gene: F8A1 (coagulation factor VIII associated 1) Homo sapiens
Symbol: F8A1
Name: coagulation factor VIII associated 1
Description: 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. [provided by RefSeq, Jul 2008]
Type: protein-coding
RefSeq Status: REVIEWED
Also known as: coagulation factor VIII-associated (intronic transcript) 1; coagulation factor VIII-associated 1; cpG island protein; DXS522E; F8A; F8A2; F8A3; factor VIII associated protein; factor VIII intron 22 protein; HAP40; huntingtin-associated protein 40
Rattus norvegicus (Norway rat) : F8a1 (coagulation factor VIII-associated 1)  Alliance
Ictidomys tridecemlineatus (thirteen-lined ground squirrel) : F8a1 (coagulation factor VIII associated 1)
more info ...
Allele / Splice: See ClinVar data
Latest Assembly: GRCh38 - Human Genome Assembly GRCh38
Human AssemblyChrPosition (strand)SourceGenome Browsers
GRCh38X154,886,360 - 154,888,061 (+)NCBIGRCh38GRCh38hg38GRCh38
GRCh37X154,114,635 - 154,116,336 (+)NCBIGRCh37GRCh37hg19GRCh37
Build 36X153,767,829 - 153,769,530 (+)NCBINCBI36hg18NCBI36
Build 34X154,250,279 - 154,251,980NCBI
CeleraX154,273,254 - 154,274,955 (+)NCBI
Cytogenetic MapXq28NCBI
HuRefX142,658,135 - 143,157,866 (+)NCBIHuRef
CHM1_1X154,027,043 - 154,027,955 (+)NCBICHM1_1
JBrowse: View Region in Genome Browser (JBrowse)

Disease Annotations
Gene-Chemical Interaction Annotations
Gene Ontology Annotations
References - curated
References - uncurated


Comparative Map Data
Position Markers
miRNA Target Status


Nucleotide Sequences
Protein Sequences
Clinical Variants

Additional Information

External Database Links
Nomenclature History
More on F8A1
Alliance Gene
Ensembl Gene
JBrowse: hg19 hg38
HGNC Report
NCBI Genome Data Viewer

CRRD Object Information
CRRD ID: 1342562
Created: 2005-03-08
Species: Homo sapiens
Last Modified: 2019-06-18
Status: ACTIVE


RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.