Cited by 70Lipoproteins and Cardiovascular HealthLipid metabolism and disordersCholesterol and Lipid Metabolism

Relationship Between Low‐Density Lipoprotein Cholesterol and Lipoprotein(a) Lowering in Response to PCSK9 Inhibition With Evolocumab

Open access
Shapiro, Michael D., Minnier, Jessica, Tavori, Hagai, Kassahun, Helina, Flower, Andrea, Somaratne, Ransi, Fazio, Sergio·2019·Journal of the American Heart Association

Abstract

Background: Beyond their potent LDL (low‐density lipoprotein) cholesterol ( LDL ‐C)–lowering efficacy (50–60%), PCSK9 (proprotein convertase subtilisin/kexin type 9) inhibitors also reduce Lp(a) (lipoprotein[a]) levels by 25% to 30%, suggesting a 2:1 response ratio. We aimed to characterize the relationship between LDL ‐C and Lp(a) lowering by evolocumab, a PCSK 9 inhibitor, in a large clinical trial population and to determine the prevalence of concordant/discordant LDL ‐C and Lp(a) responses to PCSK 9 inhibition. Methods and Results: Data were analyzed from 4 randomized, 12‐week, multicenter, phase 3 evolocumab trials. Patients with familial hypercholesterolemia, nonfamilial hypercholesterolemia, or statin intolerance participated in the trials. The main measure was the degree of concordance or discordance of LDL ‐C and Lp(a) in response to PCSK 9 inhibition; concordant response was defined as LDL ‐C reduction >35% and Lp(a) reduction >10%. The study cohort comprised 895 patients (438 female; median age: 59.0 years [interquartile range: 51–66 years]). Baseline mean level of LDL ‐C was 133.6 mg/dL (SE: 1.7) and median Lp(a) level was 46.4 mg/dL (interquartile range: 18.4–82.4 mg/dL). A discordant response was observed in 165 (19.7%) patients. With these cutoffs, the prevalence of discordance was higher when considering baseline Lp(a) concentrations >30 mg/dL (26.5%) or >50 mg/dL (28.6%). Conclusions: We demonstrate high prevalence of discordance in LDL ‐C and Lp(a) reduction in response to evolocumab, particularly when considering higher baseline Lp(a) concentrations, indicating the possibility of alternative pathways beyond LDLR ( LDL receptor)–mediated clearance involved in Lp(a) reduction by evolocumab. Clinical Trial Registration: URL : http://www.clinicaltrials.gov . Unique identifiers: NCT 01763827, NCT 01763866, NCT 01763905, NCT 01763918.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1161/jaha.118.010932

Cites

34 of 34 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Lp(a) is not cleared predominantly through the LDL receptor.

    “Unlike LDL, Lp(a) is not cleared predominantly through the LDL receptor[27].”

    From Oral PCSK9 inhibitors for elevated LDL-C: A systematic review and meta-analysis of randomized trials (2026) · cites this paper as [27]

    The Discussion (page unavailable) suggests that some Lp(a) isoforms may use clearance routes other than the LDL receptor and says Lp(a) clearance is partly regulated by that receptor. It does not establish that the LDL receptor is not the predominant clearance route overall; the claim states that stronger conclusion as fact. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • The apo(a) moiety likely shifts clearance toward non-LDLR pathways that are less responsive to PCSK9 inhibition, while any reduction in secretion appears modest.

    “The apo(a) moiety likely also shifts clearance toward non-LDLR pathways that are less responsive to PCSK9 inhibition [27], while any reduction in secretion appears modest.”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Shapiro, M. D., Minnier, J., Tavori, H., Kassahun, H., Flower, A., Somaratne, R., & Fazio, S.
Affiliations
  • Oregon Health & Science University (US)
  • Amgen (United States) (US)
  • Syneos Health Dunedin FL
  • NGM Biopharmaceuticals (United States) (US)
Corresponding author
Shapiro, Michael D.
Venue
Journal of the American Heart Association
Published
2019-02-19
Volume
8
Issue
4
Pages
e010932-e010932
ISSN
2047-9980 (ISSN-L)
OpenAlex
W2912156356
Cited by
70
References
34
Citations by year
2026: 5 · 2025: 5 · 2024: 5 · 2023: 10 · 2022: 6 · 2021: 11 · 2020: 18 · 2019: 9
FWCI
10.51
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • Journal of the American Heart Association (publishedVersion, cc-by-nc)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Eunice Kennedy Shriver National Institute of Child Health and Human Development (K12HD043488)
Topics
  • Health Sciences › Medicine › Surgery › Lipoproteins and Cardiovascular Health
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Lipid metabolism and disorders
  • Health Sciences › Medicine › Surgery › Cholesterol and Lipid Metabolism
Keywords
evolocumab, PCSK9 inhibition, lipoprotein(a), LDL cholesterol lowering, familial hypercholesterolemia, hypercholesterolemia, statin intolerance
MeSH terms
Proprotein Convertase 9, PCSK9 Inhibitors, Aged, Anticholesteremic Agents, Female, Follow-Up Studies, Humans, Hypercholesterolemia, Cholesterol, LDL, Male, Middle Aged, Biomarkers, Treatment Outcome, Antibodies, Monoclonal, Humanized

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review