Phenotype-genotype correlation in eight Polish patients with inherited Factor XIII deficiency: identification of three novel mutations

Ivaskevicius, V; Windyga, J; Baran, B; Schroeder, V; Junen, J; Bykowska, K; Seifried, E; Kohler, H P; Oldenburg, J (2007). Phenotype-genotype correlation in eight Polish patients with inherited Factor XIII deficiency: identification of three novel mutations. Haemophilia, 13(5), pp. 649-657. Oxford: Blackwell Science 10.1111/j.1365-2516.2007.01517.x

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Inherited factor XIII (FXIII) deficiency is known as one of the most rare blood coagulation disorder in humans. In the present study, phenotype and genotype of eight FXIII deficient Polish patients from five unrelated families were compared. The patients presented with a severe phenotype demonstrated by a high incidence of intracerebral haemorrhages (seven of eight patients), haemarthrosis (six patients) and bleeding due to trauma (five patients). Introduction of regular substitution with FXIII concentrate prevented spontaneous bleeding in seven patients. In all patients, mutations within the F13A gene have been identified revealing four missense mutations (Arg77Cys, Arg260Cys, Ala378Pro, Gly420Ser), one nonsense mutation (Arg661X), one splice site mutation (IVS5-1 G>A) and one small deletion (c.499-512del). One homozygous large deletion involving exon 15 was detected by failure of PCR product. The corresponding mutations resulted in severely reduced FXIII activity and FXIII A-subunit antigen concentration, while FXIII B-subunit antigen remained normal or mildly decreased. Structural analysis demonstrated that the novel Ala378Pro mutation may cause a disruption of the FXIII catalytic triad leading to a non-functional protein which presumably undergoes premature degradation. In conclusion, the severe phenotype with high incidence of intracranial bleeding and haemarthrosis was in accordance with laboratory findings on FXIII and with severe molecular defects of the F13A gene.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > Unit Childrens Hospital > Thromboselabor Kinderklinik [discontinued]
UniBE Contributor:	Schröder, Verena, Kohler, Hans-Peter
ISSN:	1351-8216
ISBN:	17880458
Publisher:	Blackwell Science
Language:	English
Submitter:	Factscience Import
Date Deposited:	04 Oct 2013 14:56
Last Modified:	05 Dec 2022 14:17
Publisher DOI:	10.1111/j.1365-2516.2007.01517.x
PubMed ID:	17880458
Web of Science ID:	000249088500030
URI:	https://boris.unibe.ch/id/eprint/24062 (FactScience: 46615)