A new shot called olpasiran can slash a dangerous type of cholesterol called lipoprotein(a) by more than double its starting level in people with heart disease — meaning it doesn’t just lower it, it nearly wipes it out.
Evidence Quality Assessment
Claim Status
overstated
Study Design Support
Design cannot support claim
Appropriate Language Strength
probability
Can suggest probability/likelihood
Assessment Explanation
A reduction of 101% implies lipoprotein(a) levels become negative, which is biologically impossible since concentrations cannot be less than zero. This suggests either a misinterpretation of percentage change (likely relative to baseline, not absolute) or a reporting error. The claim uses a definitive verb ('reduces') and an impossible magnitude, making it overstated. A corrected version should reflect maximum percentage reduction relative to baseline (e.g., 'up to 95%') and use probabilistic language.
More Accurate Statement
“Subcutaneous administration of olpasiran at a dose of 225 mg every 12 weeks for 36 weeks reduces lipoprotein(a) concentrations by up to 95% in adults with established atherosclerotic cardiovascular disease and baseline lipoprotein(a) levels above 150 nmol/L, compared to placebo, with high probability.”
Context Details
Domain
medicine
Population
human
Subject
Adults with established atherosclerotic cardiovascular disease and baseline lipoprotein(a) levels above 150 nmol/L
Action
reduces
Target
lipoprotein(a) concentrations by up to 101%
Intervention Details
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.
Evidence from Studies
Supporting (1)
Small Interfering RNA to Reduce Lipoprotein(a) in Cardiovascular Disease.
Scientists tested a drug called olpasiran in people with high heart disease risk and very high levels of a harmful fat called lipoprotein(a). After 36 weeks of getting a shot every 12 weeks, their harmful fat levels dropped by over 100% — even more than the claim said. So yes, the study proves the claim is right.