Strong Support
causal
Analysis v3
History

In adults with diabetes who do not have advanced artery disease, the drug evolocumab lowers the chance of having a heart attack, stroke, or needing a procedure to restore blood flow over five years,...

80
Pro
0
Against

Mechanism

Synthesis from 1 study

How it works

This drug stops a protein from removing LDL receptors from the liver, so the liver can pull more bad cholesterol out of the blood. With less cholesterol building up in artery walls, blockages that cause heart attacks or the need for artery-opening procedures become much less likely.

Most probable mechanism

In Simple Terms

A drug blocks a protein that normally removes LDL receptors from the liver, so more receptors stay on the liver surface to pull LDL cholesterol out of the blood. With less LDL in the blood, less fat builds up in artery walls, which stops small plaques from forming and growing. This reduces the chance that blood flow gets blocked, preventing heart attacks, strokes, or the need for procedures to open blocked arteries.

Causal chain
1

A monoclonal antibody binds to and neutralizes PCSK9 protein in circulation

Verified by multiple studies
which leads to
2

Neutralized PCSK9 cannot bind to LDL receptors on hepatocytes, preventing receptor degradation

Verified by multiple studies
which leads to
3

LDL receptors are recycled to the hepatocyte membrane instead of being destroyed in lysosomes

Verified by multiple studies
which leads to
4

Increased LDL receptor density on hepatocytes enhances clearance of LDL particles from plasma

Verified by multiple studies
which leads to
5

Sustained reduction in plasma LDL cholesterol decreases lipid deposition into the arterial intima

Verified by multiple studies
which leads to
6

Reduced lipid accumulation slows initiation and progression of atherosclerotic lesions in arterial walls

Verified by multiple studies
which leads to
7

Stabilization of nascent plaques and reduced plaque burden lowers the likelihood of thrombotic occlusion

Verified by multiple studies
which leads to
8

Decreased thrombotic occlusion reduces the incidence of ischemia-driven cardiovascular events, including revascularization procedures

Verified by multiple studies

Evidence from Studies

Supporting (1)

80

Community contributions welcome

Contradicting (0)

0

Community contributions welcome

No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Sign up to see full verdict