GENERAL CHARACTERISTICS OF PATIENTS WITH HOMOZYGOUS FORM OF FAMILIAL HYPERCHOLESTEROLAEMIA IN THE CZECH REPUBLIC
ATHEROSCLEROSIS(2018)
Abstract
Aim: Aim of project was to define general characteristics of
patients with homozygous form of familial hypercholesterolaemia
in the Czech Republic. Methods: Set of hoFH patients has 19
patients, including 5 ceased. Patients were selected by the
genetic testing or phenotypic criteria for hoFH. Data were
extracted from the Czech national FH registry (MedPed).
Results: Median of age at diagnosis was 30,0; R(7-63) years.
Baseline total cholesterol (T-C) level had median 12.85;
R(6.4-22.8)mmol/l and LDL-cholesterol (LDL-C) 10.27;
R(4.29-21.26)mmol/l. 18 homozygotes were confirmed by
genotyping – 77.8% of patients had LDLR/LDLR mutation and 22.2%
had apoB/apoB mutation. All of the patients with apoB mutation
are true homozygotes, while only 4 patients with LDLR mutation
were true homozygotes and 10 patients were compound
heterozygotes. There were no double heterozygotes. Premature
atherosclerotic vascular disease was diagnosed in 74%,
xanthomas in 37%, arcus lipoides corneae in 11% and xanthelasma
in 16% cases. 5 patients died, median age of death was 45;
R(32-68) years. All patients were treated with statins, 93% had
a statin-ezetimibe combination, 50% were on triple therapy with
PCSK9-i, 5 patients had regular LDL-apheresis. Median of
on-treatment LDL-C was 3.64; R(1.04-6.03)mmol/l. Patients with
LDLR/LDLR mutation compared to apoB/apoB homozygotes have
better on-treatment levels of LDL-C and T-C, even though the
baseline LDL-C and T-C levels were higher. 33% patients reached
LDL-C targets. Conclusions: Our study demonstrated important
clinical and laboratory differences between LDLR and apoB FH
homozygous individuals including target values attainment
variability.
MoreTranslated text
Key words
familial hypercholesterolaemia,homozygous form
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