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Takeaway: SEQUOIA-HCM challenges the status quo in HCM treatment and presents a novel option that is shown to provide symptomatic benefit to patients.
Will aficamten become the standard of care? Will these results impact your practice?
#CardsJC
Clinically, this is relevant since aficamten can improve the way that pts with obstructive HCM feel and function.
This trial highlights the benefits of CMI drug therapy in pts with obstructive HCM, which were similar to the recent findings seen with mavacamten.
Did aficamten cause any 📉in EF?
🚨EF in aficamten group was modestly lower by –4.8% (–6.3, –3.2)
🚨 After washout, no Δ in LVEF in both groups: –1% (–2, 0)
🚨 Transient ⬇️ of < 50% in EF in 5 pts (3.5%) in aficamten group and in 1 pt (0.7%) in placebo group
Thoughts? #CardsJC
Any thoughts about the prevalence of adverse events in each group?
🚨Serious AE in 8 patients (5.6%) in the aficamten group and in 13 patients (9.3%) in the placebo group
#CardsJC
What about the secondary outcomes?
⭐️ Δ in KCCQ-CSS: 12 vs. 5*
⭐️ Δ in LVOT gradient ≤30 mm Hg after Valsalva: 49.3% vs. 3.6%*
⭐️ Δ in LVOT gradient: -47.6 vs. 1.8 mm Hg*
⭐️ Δ in NYHA functional class: 58.5% vs 24.3%*
Do these results surprise you?
#CardsJC
Now what we all have been waiting for, the key finding:
⭐️ Mean change from baseline to week 24 in peak VO2 uptake, for aficamten vs. placebo, was: 1.8 vs. 0.0 mL/kg/min (p < 0.0001)
Primary endpoint:
Δ in peak oxygen uptake during cardiopulmonary exercise in 24 weeks
Key secondary endpoints:
Δ in peak LVOT gradients
Δ in KCCQ-CSS
Δ in NYHA functional class
Are these endpoints sufficient to answer the objective?
📊🔍
#CardsJC
Is this a representative HCM population?
Specially looking at:
🌎 79% White patient representation
🧬17.5% with pathogenic sarcomeric variant
💊Prevalence of BB, CCB, disopyramide use
🫀NYHA Class ratio
#CardsJC
Which patients with HCM were included?
📍LV wall thickness ≥ 15mm
📍EF ≥ 60%
📍LVOT gradient ≥ 30 mm Hg at rest and ≥ 50 mm Hg after Valsalva
📍NYHA II-III
📍⬇️ exercise capacity
Study design: It is an international, phase 3, double-blinded, randomized placebo-controlled trial involving 80 sites. 🌍
Any thoughts about the design?
#CardsJC
Trial objective/population: SEQUOIA-HCM aimed to determine the efficacy and safety of aficamten in adult patients with symptomatic obstructive HCM.
#CardsJC