Heart Health

Lp(a) very high

Very high (≥100 mg/dL or ≥250 nmol/L)? Yes

Recommendationlpa-very-highNo one has reached this rule yet

Treat LDL harder than risk alone suggests; goal still set by risk category; maximal control of other factors

Clinical review

All reviewers

No clinician has signed off this rule yet. It reflects our reading of the guidelines cited below, which has not been independently checked.

What someone who reaches this rule is told

Word for word, as generated for the example person below. Figures in the text are theirs.

  • How it's used

    This elevated Lp(a) counts as a risk-enhancing factor in your Lipids recommendation above — it shifts a borderline-risk decision toward a statin, keeps one on the table even with a CAC score of 0, and lowers the LDL-C goal.

    Expert guidelinesOfficial guidelines recommend it, based on trials plus expert judgment.

    ACC/AHAClass 2aLevel B-NRESC/EASClass IIaLevel B
    Why, and the source

    Lp(a) isn't just informational here: the ACC/AHA framework folds it into the primary-prevention statin decision, and this tool now does the same.

    Where the guidelines stand

    ACC/AHA (US)

    ESC (Europe)

    • RecommendsClass IIaLevel B

      Lp(a) above 50 mg/dL (105 nmol/L) as a risk-enhancing factor in all adults.

      2025 ESC/EAS focused update on dyslipidaemias · Recommendation tables · class and level read from the guideline tables on 2026-09-30

    2026 ACC/AHA/Multisociety Guideline on the Management of Dyslipidemia · Class 2a · Level B-NR

  • Current standard (indirect management only)

    Your Lp(a) (160 mg/dL) is very high. It argues for treating your LDL harder than your risk category alone would — and for being maximally aggressive with blood pressure, weight, smoking, and glucose, since there's no approved drug for the Lp(a) itself.

    Expert guidelinesOfficial guidelines recommend it, based on trials plus expert judgment.

    ACC/AHAClass 1Level B-NR
    Why, and the source

    No approved therapy directly targets Lp(a), so the excess inherited risk is offset by lowering LDL-C harder. The guideline uses Lp(a) to favour intensifying treatment; it does not set a separate numeric LDL target. Lp(a) is largely genetic — first-degree relatives may want their own level checked once.

    Where the guidelines stand

    ACC/AHA (US)

    2026 ACC/AHA/Multisociety Guideline on the Management of Dyslipidemia · Class 1 · Level B-NR

Newer, not yet standard

Promising, but not in the guidelines yet.

  • Still being studied — not available

    The first Lp(a)-lowering drug to finish a large outcomes trial did not work. In September 2026 pelacarsen was reported to have missed its primary endpoint — it lowered Lp(a), but did not reduce heart attacks, strokes, or cardiovascular death.

    Proven in trialsTrials counted real events, like heart attacks, strokes, or deaths, and this changed them.

    Why, and the source

    This matters for how you read everything above. Lp(a) is unquestionably a marker of risk, but Lp(a)HORIZON is the first real test of whether lowering it changes outcomes, and the answer was no in that population — people already on good statin and blood-pressure treatment. Full results are expected at the November 2026 AHA meeting. A second drug, olpasiran, is still in its outcomes trial (OCEAN(a)-Outcomes, due to complete around the end of 2026) and lowers Lp(a) by a larger margin, so the question isn't closed. But nobody should be waiting on an Lp(a) drug as a plan. Lowering LDL further, and controlling everything else, is the plan.

    Novartis — Lp(a)HORIZON Phase 3 topline results for pelacarsen (September 2026)

An example person who reaches it

“Borderline risk, zero calcium but high Lp(a)” — an illustrative profile, not a real user.

57-year-old manBP 128/80LDL 138Lp(a) 160 mg/dLcalcium score 010-yr PREVENT-ASCVD 4.0%

Their path through lp(a)

  1. Lp(a) elevated (≥50 mg/dL or ≥125 nmol/L)?Yes
  2. Very high (≥100 mg/dL or ≥250 nmol/L)?Yes ← this rule

Where it sits

Asked after: Lp(a) elevated

Sources

Cited by the recommendations above.

Being tested further

A trial that could change this, still running or reported too recently to be settled.

  • OCEAN(a)-Outcomes — For people with heart disease and high Lp(a), does olpasiran, a stronger Lp(a)-lowering drug, prevent heart attacks?
  • Lp(a)HORIZON — For people with heart disease and high Lp(a), does lowering Lp(a) with pelacarsen prevent heart attacks and strokes?

Review this rule

For practising clinicians. Endorse it, propose a change, or dispute it. We verify every reviewer before a review is shown, and a review stays attached to the version of the rule you saw — if the rule changes, the page says so. You'll be asked to declare any relevant interests; they're shown with your review.

Log in or create an account to submit a review. An account is how we tie a review to a person we can verify.

Runs in lib/engine/lpaFlag.ts as lpa-very-high.