The Study
Regulation of PCSK9 Expression and Function: Mechanisms and Therapeutic Implications
This study is like a summary written by scientists who looked at many other experiments about a protein called PCSK9. It doesn't do new experiments itself, so it can't prove anything new. It helps us understand what might be happening based on what others have found.
Analysis score
Maximum 5 for a narrative review.
Where the score came from
PCSK9 is a protein that destroys good receptors in your body that help clean bad cholesterol from your blood and help your immune system fight cancer. When we block PCSK9, more of these helpful receptors stay active.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 51 / 100
Quality score
Based on clinical experience or non-systematic literature reviews. The lowest level of evidence as they are most susceptible to bias and personal perspective.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes, this is important because lower cholesterol means lower heart disease risk, and better immune attack on tumors could help treat cancer.
- 2Blocking PCSK9 lowers bad cholesterol by about 50–60% and another risky fat called Lp(a) by 25–35%.
- 3In mice, blocking PCSK9 helps the immune system attack tumors better.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Frontiers in Cardiovascular Medicine
Year
2021
Authors
Xiao-dan Xia, Zhongsheng Peng, Hong-mei Gu, Maggie Wang, Gui-qing Wang, Da-wei Zhang
Related Content
Claims (6)
A protein called PCSK9 helps break down the liver's 'LDL cholesterol cleaners,' so more bad cholesterol stays in your blood, raising heart disease risk. People with certain PCSK9 gene changes either have very high or very low cholesterol levels.
A type of medicine (like evolocumab or alirocumab) blocks a protein in your body called PCSK9, which helps your liver remove bad cholesterol from your blood—cutting it by about half.
Blocking a protein called PCSK9 helps the immune system better recognize and attack cancer cells in mice, slowing tumor growth — and it works in a way that's not related to cholesterol.
Some cholesterol-lowering drugs called PCSK9 inhibitors can lower a specific type of blood fat linked to heart disease, and that might help protect people with high levels, but scientists aren't sure exactly how it works yet.
A protein called PCSK9 causes the liver to break down fewer 'bad' cholesterol carriers, which means more of it stays in your blood.
PCSK9 promotes the degradation of hepatic LDL receptors, thereby reducing the liver's capacity to clear LDL cholesterol from the bloodstream.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.