Bratislavske lekarske listy · 2023
APOC3 and ABCA1 variants in unusual combined hypolipidaemia showing premature peripheral vascular disease.
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Pos Zuzana, Khedr Milad, Radvanszky Jan, Penesova Adela, Hekel Rastislav, Szemes Tomas, Ranganath Lakshminarayan Rao, Zatkova Andrea
Аннотация
BACKGROUND: Familial combined hypolipidaemia is a condition characterised by very low concentrations of circulating very-low-density lipoprotein (VLDL), low-density lipoprotein cholesterol (LDL), and high-density lipoprotein cholesterol (HDL). It is thought that low LDL/combined hypolipidaemia can protect from cardiovascular disease (CVD), but this is not what we found in a case we present.
OBJECTIVE: We report on a 57-years-old male patient with combined hypolipidaemia who presented with premature peripheral vascular disease. We investigated also his two sons, 32- and 27-years-old, who manifested a tendency to low lipid levels.
METHODS AND RESULTS: We used Illumina exome analysis in all three individuals and in all of them we could exclude the major effect of the variants within the genes most frequently mutated in hypolipidaemia, including recently reported LIPC gene variant. Instead, in all three individuals we identified a novel ABCA1 variant, possibly responsible for the decreased HDL levels. The proband and one of his sons also share the splicing APOC3 variant rs138326449, known to be associated with decreased TG levels.
CONCLUSION: The heterogeneous nature and the risk of atherosclerosis in combined hypolipidaemia seems to be variable, based on an interplay between low HDL and LDL levels, and it depends on the combination of variants that cause it (Tab. 2, Ref. 38).
OBJECTIVE: We report on a 57-years-old male patient with combined hypolipidaemia who presented with premature peripheral vascular disease. We investigated also his two sons, 32- and 27-years-old, who manifested a tendency to low lipid levels.
METHODS AND RESULTS: We used Illumina exome analysis in all three individuals and in all of them we could exclude the major effect of the variants within the genes most frequently mutated in hypolipidaemia, including recently reported LIPC gene variant. Instead, in all three individuals we identified a novel ABCA1 variant, possibly responsible for the decreased HDL levels. The proband and one of his sons also share the splicing APOC3 variant rs138326449, known to be associated with decreased TG levels.
CONCLUSION: The heterogeneous nature and the risk of atherosclerosis in combined hypolipidaemia seems to be variable, based on an interplay between low HDL and LDL levels, and it depends on the combination of variants that cause it (Tab. 2, Ref. 38).