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Items: 4

1.

Congenital afibrinogenemia

Inherited disorders of fibrinogen affect either the quantity (afibrinogenemia and hypofibrinogenemia; 202400) or the quality (dysfibrinogenemia; 616004) of the circulating fibrinogen or both (hypodysfibrinogenemia; see 616004). Afibrinogenemia is characterized by the complete absence of immunoreactive fibrinogen. Bleeding due to afibrinogenemia usually manifests in the neonatal period, with 85% of cases presenting umbilical cord bleeding, but a later age of onst is not unusual. Bleeding may occur in the skin, gastrointestinal tract, genitourinary tract, or the central nervous system, with intracranial hemorrhage being reported as the major cause of death. Patients are susceptible to spontaneous rupture of the spleen. Menstruating women may experience menometrorrhagia. First-trimester abortion is common. Both arterial and venous thromboembolic complications have been reported (summary by de Moerloose and Neerman-Arbez, 2009). Hypofibrinogenemia is characterized by reduced amounts of immunoreactive fibrinogen. Patients are often heterozygous carriers of afibrinogenemia mutations and are usually asymptomatic. However, they may bleed when exposed to trauma or if they have a second associated hemostatic abnormality. Women may experience miscarriages. Liver disease occurs in rare cases (summary by de Moerloose and Neerman-Arbez, 2009). [from OMIM]

MedGen UID:
749036
Concept ID:
C2584774
Disease or Syndrome
2.

Factor XIII, A subunit, deficiency of

Factor XIII deficiency is an autosomal recessive hematologic disorder characterized by increased bleeding and poor wound healing. Most cases of congenital factor XIII deficiency result from mutation in the A subunit (Kangsadalampai et al., 1999). Ichinose et al. (1996, 2000) proposed a classification of factor XIII deficiency: XIIIA deficiency (formerly 'type II' F13 deficiency) and XIIIB deficiency (formerly 'type I' F13 deficiency), as well as a possible combined deficiency of the 2. [from OMIM]

MedGen UID:
442497
Concept ID:
C2750514
Disease or Syndrome
3.

Factor XIII, b subunit, deficiency of

Factor XIII deficiency is an autosomal recessive hematologic disorder characterized by increased bleeding and poor wound healing. Most cases of congenital factor XIII deficiency result from mutation in the A subunit (Kangsadalampai et al., 1999). Ichinose et al. (1996, 2000) proposed a classification of factor XIII deficiency: XIIIA deficiency (formerly 'type II' F13 deficiency) and XIIIB deficiency (formerly 'type I' F13 deficiency), as well as a possible combined deficiency of the 2. [from OMIM]

MedGen UID:
442490
Concept ID:
C2750481
Finding
4.

Abnormal umbilical stump bleeding

Abnormal bleeding of the umbilical stump following separation of the cord at approximately 7-10 days after birth. [from HPO]

MedGen UID:
868740
Concept ID:
C4023145
Anatomical Abnormality
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