FGA

Chr 4ARAD

fibrinogen alpha chain

Also known as: AMYLD2, Fib2

This gene encodes the alpha subunit of the coagulation factor fibrinogen, which is a component of the blood clot. Following vascular injury, the encoded preproprotein is proteolytically processed by thrombin during the conversion of fibrinogen to fibrin. Mutations in this gene lead to several disorders, including dysfibrinogenemia, hypofibrinogenemia, afibrinogenemia and renal amyloidosis. Alternative splicing results in multiple transcript variants, at least one of which encodes an isoform that undergoes proteolytic processing. [provided by RefSeq, Jan 2016]

OMIMResearchGenerating clinical summary…

Primary Disease Associations & Inheritance

Afibrinogenemia, congenitalMIM #202400
AR
Amyloidosis, hereditary systemic 2MIM #105200
AD
Dysfibrinogenemia, congenitalMIM #616004
AD
Hypodysfibrinogenemia, congenitalMIM #616004
AD
UniProtCongenital afibrinogenemia

Clinical highlights

Gene-disease validity (ClinGen)
congenital fibrinogen deficiency · SDDefinitivesufficient evidence for diagnostic panels
1
Active trials
221
Pubs (1 yr)
P/LP submissions
P/LP missense
1.02
LOEUF
DN
Mechanism· predicted

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint?
1.02LOEUF
pLI 0.000
Z-score 1.46
OE 0.73 (0.531.02)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint?
-0.67Z-score
OE missense 1.09 (1.011.17)
498 obs / 457.6 exp
Tolerant

Tolerant to missense variation

Observed / Expected Ratios?
LoF OE?0.73 (0.531.02)
00.351.4
Missense OE?1.09 (1.011.17)
00.61.4
Synonymous OE?1.11
01.21.6
LoF obs/exp: 25 / 34.2Missense obs/exp: 498 / 457.6Syn Z: -1.12

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

FGA · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.