Abstract
Abstract Background Familial hypercholesterolaemia (FH) affects approximately 150,000 people in Poland. However, there are many patients still unaware of this diagnosis. On the other hand, it might lead to early cardiovascular mortality and morbidity due to the lifetime exposure to high levels of LDL-C. Therefore, increased awareness of FH is very important. Purpose We aimed to evaluate the clinical features of FH in children and adults based on the preliminary data from the Polish Mother's Memorial Hospital Research Institute (PMMHRI) Registry. Methods The registry of children and adults with FH conducted in PMMHRI (2nd largest, supra-regional hospital in Poland) was established to investigate the clinical characteristics, management and clinical outcomes data of FH patients. All consecutive patients with diagnosed (genetically and/or phenotypically) FH were included in the study. Results Of 103 patients with FH, there were 16 children aged 9±3 and 87 adults aged 41±16; 59% were female. The diagnosis of FH in adults was late – at the mean age of 41 years. Among children with FH, as compared with adults, the levels of highest TC and LDL-C ever were similar. However, children presented higher mean levels of total cholesterol, LDL-C and HDL-C measured at baseline visit (Table). Interestingly there was no difference in BMI between children and adults (Table). Among adults, chronic coronary syndrome was diagnosed in 11.5% patients, from which 5.7% patients had a history of myocardial infarction and 7% patients required revascularization. The prevalence of chronic coronary disease, peripheral artery disease as well as stroke in family history was definitely higher (in 44 patients – 50%, 17 patients – 20% and 22 patients – 25%, respectively). Most of adult patients at baseline visit were prescribed statins (rosuvastatin or atorvastatin). 14 patients (13.6%) declared statin intolerance, most of them complained of muscle pain, 4.6% patients reported hepatic disturbances. The frequency of statin use in children was lower – 56% children were prescribed statin, 19% declared statin intolerance with muscle pain as the side-effect of treatment. Ezetimibe, as a part of combination therapy, was taken by 29% adult patients. PCSK9 inhibitors were prescribed (within drug program) for 11.5% adult patients. Fibrates were prescribed for 13.7% adult patients, the same was for n-3 fatty acids. Conclusions Despite definitely younger age of FH diagnosis children present higher mean levels of LDL cholesterol than adults. Therefore, the lifetime exposure to LDL cholesterol starts at a very young age. As a result, there is a need to the earlier initiation of therapy and strict monitoring of the atherosclerosis progression. On the other hand, late diagnosis of FH in adults is an unmet need, that might be associated with poorer prognosis. Funding Acknowledgement Type of funding sources: None.
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