スタチンを服用する患者では,LPAの変種は残留心血管リスクと関連しています
Wei-Qi Wei1, Xiaohui Li2, Qiping Feng3
1Department of Biomedical Informatics (W.-Q.W., J.D.M., J.C.D.), Vanderbilt University Medical Center, Nashville, TN.
Circulation
|April 29, 2018
まとめ
スタチンを服用している患者の冠動脈疾患 (CHD) に関連している. この発見はコレステロールレベルとは無関係で,脂質タンパク質をターゲットにすることが残留リスクを減らす可能性があることを示唆しています.
科学分野:
- 遺伝学
- 心臓病科
- ファルマゲノミクス
背景:
- 冠動脈疾患 (CHD) は,世界の主要な死因となっています.
- スタチンは低密度の脂質タンパク質コレステロール (LDL- C) と心血管疾患の発生率を低下させるが,一部の患者では残留リスクが持続する.
- スタチン療法中のこの残留心血管リスクに影響を与える遺伝的要因は,ほとんど不明です.
研究 の 目的:
- スタチン療法にもかかわらず心血管疾患が発生した患者の残留心血管リスクの遺伝的決定因子を特定する.
- スタチン治療中のLPA/PLGロカス内の遺伝子変異とCHDの関連性を調査する.
主な方法:
- スタチン治療中に心血管疾患の症例と,イベントのない対照群を対象に2段階の全ゲノム関連研究 (GWAS) を実施した.
- 候補変異の複製は独立したコホートで行われました.
- 最も重要な遺伝的場所に関連した他の特徴を探求するために,現象全体の関連研究 (PheWAS) が使用されました.
主要な成果:
- メタアナリシスでは,スタチンの治療中に,LPA/ PLGロカスにおける7つの単一ヌクレオチドポリモルフィズム (SNPs) が,CHDイベントと有意に関連していることが確認された.
- 最も強い関連性は,独立したコホートで複製された内部SNP rs10455872 (P=2. 6×10-10) であった.
- rs10455872とCHDの関連性は,スタチン誘発のLDL- C減少とは無関係であり,LDL- C≤70 mg/ dLの患者で持続した.
結論:
- スタチン療法中のLPAロカスにおける遺伝的変異は,LDL-Cの低下とは無関係にCHDの発生と関連している.
- これらの発見は,スタチンを服用する患者の残留性心疾患のリスクを軽減するために,循環中の脂質タンパク質を標的とした治療戦略を探求することを支持する.
関連する概念動画
Residual Plots
6.5K
A residual plot is a statistical representation of data used to analyze correlation and regression results. It helps verify the requirements for drawing specific conclusions about correlation and regression. To obtain the residual plot, first, the residual for each data value is calculated, which is simply the vertical distance between the observed and the predicted value obtained from the regression equation.
When the residual values are plotted against the variable x, it is called a residual...
When the residual values are plotted against the variable x, it is called a residual...
6.5K
Residual Stresses
658
Residual stresses reside in a structure even after removing the original stress inducer. This phenomenon often arises from varied plastic deformations across different parts of a structure. Consider a rod stretched beyond its yield point. It will not regain its original length due to permanent deformation. Even after load removal, the rod does not entirely lose stress because of uneven plastic deformations, resulting in residual stresses. The computation of these stresses in structures is...
658
Histone Variants at the Centromere
5.1K
Histone variants are the histone proteins with structural and sequence variations. These variants may be regarded as “mutant” forms that replace their canonical histone counterparts in the nucleosomes. Specific post-translational modifications on the histone variants enable further chromatin complexity and regulate tissue-specific gene expression. The most common histone variants are from histone H2A, H2B, and linker histone H1 families. However, several variants of histone H3...
5.1K
Receiver Operating Characteristic Plot
492
A ROC (Receiver Operating Characteristic) plot is a graphical tool used to assess the performance of a binary classification model by illustrating the trade-off between sensitivity (true positive rate) and specificity (false positive rate). By plotting sensitivity against 1 - specificity across various threshold settings, the ROC curve shows how well the model distinguishes between classes, with a curve closer to the top-left corner indicating a more accurate model. The area under the ROC curve...
492
Lipid-Lowering Drugs: Statins and Miscellaneous Agents
1.5K
Hyperlipidemia, a medical condition often referred to as high cholesterol, is characterized by abnormally elevated levels of lipids in the bloodstream. When present in excess, these lipids, specifically cholesterol and triglycerides, can lead to serious health complications, often involving cardiovascular diseases. Illnesses like atherosclerosis, heart attacks, and pancreatitis have all been linked to untreated hyperlipidemia. This means controlling and regulating cholesterol and triglyceride...
1.5K
Relative Risk
2.2K
Relative risk (RR) is a statistical measure commonly used in epidemiology to compare the likelihood of a particular event occurring between two groups. This metric is important for evaluating the relationship between exposure to a specific risk factor and the probability of a particular outcome. It plays a crucial role in medical research, public health studies, and risk assessment. Relative risk quantifies how much more (or less) likely an event is to occur in an exposed group compared to an...
2.2K


