Blood Research

Frequency distribution and features of patients with rare bleeding disorders.

Rare bleeding disorders (N=165) N % Median age (yr) Male (N) Female (N) Median factor levels Disease severity

Severe Moderate Mild
Fibrinogen 35 21.2 12 yr 11 24 0.6 g/L Undetectable 0.1–1 g/L >1 g/L
03 30 02
Factor V 27 16.36 8 yr 06 mo 21 6 <0.1 IU/mL Undetectable <0.1 IU/mL >0.1 IU/mL
02 23 02
Factor VII 46 27.88 11 yr 29 17 0.1 IU/mL <0.1 IU/mL 0.1–0.2 IU/mL >0.2 IU/mL
12 29 05
Factor X 19 11.52 1 yr 6 mo 9 10 <0.1 IU/mL <0.1 IU/mL 0.1–0.4 IU/mL >0.4 IU/mL
17 02 -
Factor XI 14 8.48 18 yr 11 3 0.4 IU/mL - - -
- - -
Factor XII 2 1.21 24 yr 2 0 <0.1 IU/mL - - -
- - -
Factor XIII 19 11.52 2 yr 2 mo 6 13 0.3 IU/mL Undetectable 0.3 IU/mL >0.3 IU/mL
02 15 02
Combined factor V and VIII 3 1.81 21 yr 2 1 0.2 IU/mL <0.2 IU/mL 0.2–0.4 IU/mL >0.4 IU/mL
- 3 -
Blood Res 2020;55:146~150 https://doi.org/10.5045/br.2020.2020035
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