Hereditary Haemorrhagic Telangiectasia (HHT) marked by ACVRL1C1120T variant displays Hypopigmented Naevi and frequent bleeding episodes if CYP2C9 co-mutated: clinical notes & rationale of patient registry

Title:

Hereditary Haemorrhagic Telangiectasia (HHT) marked by ACVRL1C1120T variant displays Hypopigmented Naevi and frequent bleeding episodes if CYP2C9 co-mutated: clinical notes & rationale of patient registry

Creator:

Minarik, L. , Vargova, K. , Dusilkova, N., Kulvait, V., Jonasova, A. , Kodet, O., and Stopka, T.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:bb11fb45-9922-4fa7-afc0-64d61b8b6912
uuid:bb11fb45-9922-4fa7-afc0-64d61b8b6912

Subject:

hereditary haemorrhagic telangiectasia, personalized medicine, whole exome sequencing, NGS, hereditary diseases, and haemorrhage

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Hereditary haemorrhagic telangiectasia (HHT) exhibits considerable phenotypic heterogeneity. Therefore, precise mutation screening and evaluation of patient risk must be determined in every HHT family. We present an HHT-2 case with an initial life-threatening bleeding episode that led to identification of a relatively large HHT family. Exome sequencing of the family members determined HHT-associated ACVRL1C1120T variant resulting in Arg374Trp substitution at the Ser/Thr-kinase domain region. The affected members display typical epistaxis symptomatology from early childhood resulting in sideropoenia. In addition, the HHT patients also displayed dermatology findings such as facial teleangiectasias and trunk/limb white spots representing post-inflammatory hypopigmentation. Interestingly, co-segregating with modifying cytochrome P450 (CYP2C) variant in the HHT patients led to NSAID intolerance marked by increased frequency of bleeding episodes. No arterial-venous malformation of the visceral organs and brain or association with cancer were observed. The heterogeneity of clinical presentation and the role of other variants support the need of regular patient monitoring and development of a nation-wide patient registry.

Language:

English

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Coverage:

1-6

Source:

Folia biologica | 2020 Volume:66 | Number:1

Harvested from:

CDK

Metadata only:

false