- Design
- Systematic review and meta-analysis of randomised trials
- Population
- Patients with acute ischaemic stroke on statins
- Primary outcome
- Functional independence (mRS 0–2) and recurrent stroke
- Effect
- mRS 0–2 OR 2.17 (1.29–3.64); recurrence OR 0.33 (0.16–0.69)
A meta-analysis in the Journal of Neurology pooled randomised trials comparing a PCSK9 inhibitor added to a statin with statin alone in acute ischaemic stroke.
The combination was associated with more patients functionally independent (modified Rankin 0–2: OR 2.17) and fewer recurrent ischaemic strokes (OR 0.33). LDL cholesterol fell a further 0.66 mmol/L. Adverse events and liver function did not differ. GRADE certainty was moderate for functional outcome and low for recurrence and safety.
Lowering LDL after stroke is established, and PCSK9 inhibitors are a recognised option when targets are not met on statin and ezetimibe. Whether starting one in the acute phase improves recovery is a separate question, and these trials were small and short.
Stay with the usual sequence: high-intensity statin, then ezetimibe, then a PCSK9 inhibitor if LDL remains above target. These data are not a reason to start one acutely.
- Start high-intensity statin after ischaemic stroke and check LDL at 4–12 weeks
- Add ezetimibe before a PCSK9 inhibitor if LDL is above target
- Consider a PCSK9 inhibitor for stroke patients still above target on statin and ezetimibe
- Treat the recovery benefit as unconfirmed until larger trials report
Why it matters
It raises the question of whether faster, deeper LDL lowering in the acute phase changes recovery.
Don't overread it
Small trials and low certainty for recurrence — a threefold reduction this size usually shrinks in larger studies.
The statistics, in plain English
The recurrence OR of 0.33 has an interval from 0.16 to 0.69: wide, because there were few events. Effects this large from small trials often shrink in larger ones.
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