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https://sq-96.github.io/multigroup_ctwas_analysis/realdata_final_multigroup_summary.html

LDL-ukb-d-30780_irnt

New genes identified by multi-group

LDLR, PCSK9, CETP, CCNJ, PKN3, ABCA8, FCGRT, DNAJC13, LRCH4, HMGCR, ASGR1, APOB, ADH1B, FLT3, ZDHHC18, USP39, TIMD4, ZFYVE1, ACP6, NPC1L1, ERGIC3, MITF, PSRC1, SNX17, GABBR1, HMGN1, KIF13B, R3HDM2, MYPOP, SIPA1, USP3, PGS1, FAM117B, ADRB1, PHC1, WASHC4, TPD52, THOP1, ZFP28, DMTN, PDE4C, XPNPEP3

Genes with Strong Evidence of Association with LDL Cholesterol

LDLR (Low-Density Lipoprotein Receptor): Mutations in LDLR are a primary cause of familial hypercholesterolemia, leading to elevated LDL cholesterol levels due to impaired clearance of LDL particles from the bloodstream.

PCSK9 (Proprotein Convertase Subtilisin/Kexin Type 9): PCSK9 regulates LDL receptor degradation. Gain-of-function mutations increase LDL cholesterol levels, while loss-of-function mutations are associated with reduced LDL cholesterol and a lower risk of coronary heart disease.

APOB (Apolipoprotein B): APOB encodes the primary protein component of LDL particles. Mutations can impair LDL binding to its receptor, resulting in elevated LDL cholesterol levels.

CETP (Cholesteryl Ester Transfer Protein): CETP facilitates the transfer of cholesteryl esters from HDL to LDL and VLDL particles. Variants in CETP can influence HDL and LDL cholesterol levels.

HMGCR (3-Hydroxy-3-Methylglutaryl-CoA Reductase): This enzyme is the rate-limiting step in cholesterol biosynthesis and is the target of statin therapy. Variants in HMGCR can affect LDL cholesterol levels.

NPC1L1 (Niemann-Pick C1-Like 1): NPC1L1 is critical for intestinal cholesterol absorption. Inhibitors like ezetimibe target this protein to reduce LDL cholesterol levels.

ASGR1 (Asialoglycoprotein Receptor 1): Loss-of-function mutations in ASGR1 have been associated with reduced LDL cholesterol levels and a lower risk of coronary artery disease.

PSRC1 (Proline and Serine Rich Coiled-Coil 1): Variants near PSRC1 have been linked to LDL cholesterol levels in genome-wide association studies (GWAS).

TIMD4 (T-cell Immunoglobulin and Mucin Domain Containing 4): Variants in TIMD4 have been associated with decreased serum triglyceride levels and a reduced risk of coronary heart disease and ischemic stroke in certain populations.

Genes reported by single eQTL analysis but not by multi-group analysis

PARP9,DDX56,MZF1,CLDN23,FUT2,VIL1,KLHDC7A,WBP1L

Genes with No Strong or Established Evidence for LDL Association

DDX56 RNA helicase with roles in ribosome biogenesis; no known links to lipid metabolism or LDL levels.

MZF1 A transcription factor; not directly linked to lipid or cholesterol traits.

VIL1 Villin 1, an actin-binding protein in the intestinal brush border; no direct LDL link known.

WBP1L Not currently known to be involved in lipid metabolism or LDL levels.