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Haemophilia (British English), or hemophilia (American English) [6] (from Ancient Greek αἷμα (haîma) 'blood' and φιλία (philía) 'love of'), [7] is a mostly inherited genetic disorder that impairs the body's ability to make blood clots, a process needed to stop bleeding.
Most are due to mutations in the A subunit gene (located on chromosome 6p25-p24). This mutation is inherited in an autosomal recessive fashion. Deficiency of Factor XIII leads to defective cross-linking of fibrin and vulnerability to late re-bleeds when the primary hemostatic plug is overwhelmed.
The following is a list of genetic disorders and if known, type of mutation and for the chromosome involved. Although the parlance "disease-causing gene" is common, it is the occurrence of an abnormality in the parents that causes the impairment to develop within the child. There are over 6,000 known genetic disorders in humans.
Pfizer said its gene therapy for hemophilia A not only met the main goal of showing non-inferiority compared to the Factor VIII replacement therapy in reducing the annual bleeding rate in patients ...
X-linked recessive inheritance. X-linked recessive inheritance is a mode of inheritance in which a mutation in a gene on the X chromosome causes the phenotype to be always expressed in males (who are necessarily hemizygous for the gene mutation because they have one X and one Y chromosome) and in females who are homozygous for the gene mutation, see zygosity.
[3] There are well over 6,000 known genetic disorders, [4] and new genetic disorders are constantly being described in medical literature. [5] More than 600 genetic disorders are treatable. [6] Around 1 in 50 people are affected by a known single-gene disorder, while around 1 in 263 are affected by a chromosomal disorder. [7]
In 1998, the NHF convened the first Women with Bleeding Disorders Task Force, to address the difficulties women had in getting proper treatment. [5] In 2008, former NHF Board Chair and health advocate Val Bias became the group's CEO. [6] In 2013, actress and comedian Alex Borstein became the NHF's spokesperson for genetic testing. [7]
Because factor XI helps sustain the fibrin clot in the intrinsic clotting pathway and combat fibrinolysis, a deficiency in this factor contributes to abnormal bleeding patterns; however, the amount of excessive bleeding is variable among those with haemophilia C. [7] Furthermore, it has autosomal recessive inheritance, since the gene for factor ...
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