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Start free with EleplanCongenital fibrinogen deficiency
ORPHA:335Disease
What it is
A group of rare inherited coagulation disorders characterized by bleeding symptoms ranging from mild to severe resulting from reduced quantity and/or quality of circulating fibrinogen. Afibrinogenemia (complete absence of fibrinogen) and hypofibrinogenemia (reduced plasma fibrinogen concentration) correspond to quantitative anomalies of fibrinogen while dysfibrinogenemia corresponds to a functional anomaly of fibrinogen. Hypo- and dysfibrinogenemia may be rarely combined (hypodysfibrinogenemia).
Key facts
- Prevalence
- 1-9 / 1 000 000 (Europe)
- Age of onset
- All ages
- Inheritance
- Autosomal dominant, Autosomal recessive
- Classified as
- Disease
Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.
Signs and symptoms
Very common80–99%
26- Abdominal pain
- Abnormal bleeding
- Abnormal cardiovascular system morphology
- Abnormality of the subungual region
- Abnormal umbilical stump bleeding
- Anaphylactic shock
- Bruising susceptibility
- Clubbing of fingers
- Cyanosis
- Decreased testicular size
- Developmental cataract
- Fever
- Gingival bleeding
- Hemorrhagic ovarian cyst
- Internal hemorrhage
- Left ventricular hypertrophy
- Loss of consciousness
- Micropenis
- Microphthalmia
- Opisthotonus
- Prolonged prothrombin time
- Right ventricular hypertrophy
- Splenic rupture
- Subcutaneous hemorrhage
- Tachycardia
- Volvulus
These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.
Genes reported in subtypes
Orphanet records these genes on 4 more specific entries under this disorder, not on this entry itself:
A well-studied disease is usually split into subtypes, and the gene is curated on whichever one the evidence belongs to. Open a subtype to see which gene goes with it.
ICD-10 codes
ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
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