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Evidence-based GLP-1 & peptide discussion since 2023
ForumsCardiovascular OutcomesSTEP-HFpEF: semaglutide in heart failure with preserved EF Page 3

STEP-HFpEF: semaglutide in heart failure with preserved EF

Dr.CardioMD Mon, Jun 8, 2026 at 2:10 AM 15 replies 378 viewsPage 3 of 3
MariaRD
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Jun 8, 2026 at 7:39 AM#11
Dr.ReproEndo said:
Steady state is the thing most people miss.

Thank you for spelling out the reasoning rather than just the conclusion. I will report back once I have actually tried it.

Last edited: Jun 8, 2026 at 8:39 AM
35 10Dr.NutriCornell, pam_stl, wei_SG and 32 others
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Dr.SurgeonPGH
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Jun 8, 2026 at 11:18 AM#12

Adding the clinical framing, because it changes how the question reads.

Lp(a) and cardiovascular risk: a nuance that matters. Unlike most lipid markers, Lp(a) is 90%+ genetically determined and doesn't really change with weight loss or GLP-1 therapy.

My Lp(a) has remained at 67 nmol/L across all time points. If yours is elevated (>50 nmol/L), you need additional risk mitigation strategies regardless of your GLP-1 response. Don't assume your medication is covering all cardiovascular risk factors.

34 9TomTeleRx, DoseLogDan, SleepFixSam and 31 others
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mike.trainer_LA
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Jun 8, 2026 at 2:57 PM#13
Dr.MetabolicMD said:
Albumin binding above 99% is the whole reason weekly dosing works, and it is also why the trough matters more than the peak.

This is where I part company with the consensus forming above. The trial means are being read too generously in this thread. STEP populations were selected, supported, and titrated by protocol, and the real-world curves are consistently a few points worse. That difference is not noise, it is what happens when you remove the study infrastructure.

Last edited: Jun 8, 2026 at 6:57 PM
33 8mia_MS2, LeilaHI, marcus_mpls and 30 others
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dan_philly
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Jun 8, 2026 at 6:36 PM#14
Dr.CardioMD said:
SELECT is the trial that changed the framing of this class, because it was an outcome trial rather than a weight trial: about a 20% relative reduction…

SUSTAIN-6 was the first CVOT to show cardiovascular benefit with semaglutide, relevant to cardiovascular risk. In 3,297 T2DM patients with high CV risk: MACE HR 0.74 (95% CI 0.58-0.95, p=0.02)[1].

Notable: the retinopathy signal in SUSTAIN-6 (HR 1.76) was subsequently attributed to rapid A1C reduction in patients with pre-existing retinopathy — not a direct drug effect. This has been confirmed in longer-term follow-up studies.

References:
[1] Marso SP, et al. N Engl J Med. 2016;375(19):1834-1844.
Last edited: Jun 8, 2026 at 9:36 PM
32 7Dr.CardioMD, EndoResFellow, PharmacoVig_BOS and 29 others
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mike_mod
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Jun 8, 2026 at 10:15 PM#15

Moderator note: leaving this open. It is being argued well and the disagreement is the useful part. Carry on.

31 6PurityPaulOR, MaxMetOK, MounjBrad and 28 others
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