Congenital afibrinogenaemia is a rare genetic disorder transmitted as an autosomal recessive trait and characterized by the complete absence of fibrinogen in the plasma. We report a 41-year-old woman who suffered from congenital afibrinogenaemia and hepatitis C viral infection and presented with ischaemic necrosis and livedo of the toes. Laboratory investigations showed the presence of mixed cryoglobulinaemia and anticardiolipin antibodies. Resolution occurred with plasmapheresis. We discuss the pathophysiology of this unusual condition and review the literature for skin manifestations associated with this rare haemostasis disorder.
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http://dx.doi.org/10.1080/00015550410001053 | DOI Listing |
Blood
December 2024
Hôpitaux Universitaire de Genève, Geneva, Switzerland.
Quantitative fibrinogen disorders, including afibrinogenemia and hypofibrinogenemia, are defined by the complete absence or reduction of fibrinogen, respectively. The diagnosis is based on the measurement of fibrinogen activity and antigen levels, which define the severity of this monogenic disorder. Afibrinogenemia is the result of homozygosity or combined heterozygosity for the causative mutations, whereas monoallelic mutations lead to hypofibrinogenemia.
View Article and Find Full Text PDFJ Clin Lab Anal
December 2024
Department of Clinical Laboratory, The First Affiliated Hospital of Guangxi Medical University, Key Laboratory of Clinical Laboratory Medicine of Guangxi Department of Education, Nanning, Guangxi Zhuang Autonomous Region, People's Republic of China.
Background: Congenital hypofibrinogenemia, a quantitative fibrinogen disorder, is characterized by abnormally low levels of both functional and antigen fibrinogen. We identified a heterozygous nonsense mutation, p.Arg17Stop, in the fibrinogen Bβ chain of a three-month-old female infant.
View Article and Find Full Text PDFZhonghua Xue Ye Xue Za Zhi
October 2024
Department of Hematology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China.
Congenital dysfibrinogenemia (CDF) is the most common type of congenital fibrinogen disorders, characterized by dysfunctional fibrinogen. Its prevalence is significantly underestimated due to the absence of obvious clinical symptoms in most patients. In addition to bleeding manifestations, patients with CDF may experience thrombotic events or pregnancy-related complications.
View Article and Find Full Text PDFBlood Coagul Fibrinolysis
December 2024
Department of Clinical Laboratory, The Affiliated Hospital of Jiaxing University (The First Hospital of Jiaxing), Jiaxing, China.
Background: Congenital dysfibrinogenemia is characterized by reduced fibrinogen activity, but normal immunoreactive fibrinogen levels. Here, we present a novel case with an elevated risk of thrombosis.
Methods: Coagulation assays, gene analysis, in silico tools, sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE), fibrin polymerization, thrombin generation assay, and electron microscopy scanning were utilized to elucidate the pathogenic mechanism.
J Antimicrob Chemother
January 2025
Department of Pharmacy, Zhongda Hospital, Southeast University, Nanjing 210009, China.
Objectives: Hypofibrinogenaemia is a serious adverse reaction associated with tigecycline (TGC) therapy and may lead to the discontinuation of the treatment. This study aimed to explore the relevant factors of TGC-induced hypofibrinogenaemia and determine the thresholds of serum concentration as a predictive indicator of TGC-induced hypofibrinogenaemia.
Methods: A retrospective single-centre study was conducted on patients with severe infection who were treated with TGC.
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