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What is the reported incidence of early satiety on a GLP-1 receptor agonist in TRIUMPH-1?

Asked 11 Feb 2025Modified 14 months agoViewed 32k times
24

Stated plainly: early satiety · a GLP-1 receptor agonist · TRIUMPH-1.

I would like help reading this properly rather than being told what conclusion to reach.

I have the full report including the method section, so I can quote specifics if that helps.

What would I need in addition before this supported a decision?

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gi-side-effects

The gastrointestinal cluster as a whole - nausea, vomiting, diarrhoea, constipation, reflux, early satiety - with trial incidence rates, dropout…

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clinical-trials
clinical-trials

Reading the primary literature properly: estimands, intention-to-treat versus per-protocol, confidence intervals, absolute versus relative…

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EH
askedeighty_six_hours20k2711 Feb 2025
Which agent and which dose? The rates differ enough to matter. – Dr_Malik_Osei 2 months ago
Voting to keep this open — it is more specific than it first looks. – fib4_reader 3 months ago
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5 Answers

Accepted answer first, then by votes
11

Accepted answer

Take it from the TRIUMPH-1 adverse-event table by arm, and check the unit before you use it. An incidence can be the proportion of participants who reported the event at least once, or the count of events divided by exposure time, and the two differ by however many people had it repeatedly. Then subtract the placebo arm, because the untreated rate is not zero. And read the discontinuation column beside it: an event that made people leave the trial is under-counted at every later visit, so a low late-timepoint incidence can mean the event was severe rather than rare.

Start with which symptom predominates, because the management diverges sharply even though the mechanism does not.

Fat is the macronutrient that slows emptying most on its own, so a high-fat meal on top of pharmacologically delayed emptying is the combination that produces the worst episodes.

Gastrointestinal adverse events, indicative pooled rates

EventActive armPlacebo armTiming
Nausea40–45 %15–20 %Peaks 1–2 wk after each step
Vomiting15–25 %5–8 %Follows nausea
Diarrhoea20–30 %10–15 %Early, variable
Constipation20–25 %8–12 %Later onset, persistent
Discontinuation for GI events4–7 %1–2 %Mostly during escalation

Ranges span agents and doses; read the specific prescribing information for a specific figure.

The practical hierarchy of interventions: slow the titration, reduce meal size, reduce fat, separate fluids from meals, and only then consider symptomatic treatment.

Trial-reported incidence and discontinuation rates for gastrointestinal effects are published per agent and per dose and are the appropriate figures to quote.

Nothing here is medical advice.

Smaller meals, less fat, fluids between rather than with. In that order.

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DL
answered · acceptedDr_Otto_Lindqvist72k582 Mar 2025
8The distinction between escalation-related and steady-state is the useful part. – lipid_panel_q 3 months ago
Same experience here, different supplier. – h_pergande 5 months ago
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31

It helps to be literal here: reflux is the symptom people least expect and it follows directly from a stomach that empties slowly.

Symptom prevalence in trials, broadly: nausea a quarter to a half, diarrhoea and constipation each roughly ten to twenty per cent, vomiting rather less, with all rates rising with dose.

In practice, discontinuation for gastrointestinal effects in the trials runs in the low single-figure percentages, which means the great majority of people who experience these effects continue.

New symptoms at a stable dose after months need a different explanation.

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DV
answeredDr_Ilse_Vandenberg113k24825 Mar 2025
6

The honest answer is that the first eight weeks are the hard part and that most people who get through them stop having the conversation.

Gastric emptying of a solid meal can be delayed substantially at initiation. The effect is largest early and attenuates over weeks for the long-acting agents, which is the mechanistic basis for the titration schedule.

Symptoms that appear for the first time at a stable dose after months are not the ordinary pattern and warrant looking for another explanation.

Four-weekly titration intervals in the licensed schedules were selected to allow tolerance between escalations.

Most people who report these effects continue. The discontinuation rate is low.

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SL
answeredsian_llewellyn65k1478 Jun 2025
3

Mechanically, this is the group of effects that drives almost all discontinuation in the trial programmes.

Reflux occurs because a slower-emptying stomach retains volume for longer against a lower oesophageal sphincter that has not changed. Smaller meals and not lying down within a few hours are the direct responses.

Slow the titration first. It is the intervention with the best evidence and the lowest cost.

edited 22 Feb 2025 by pk_curve — tightened the wording; no substantive change

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PC
answeredpk_curve30k2819 Feb 2025
3Adding a vote because this deserves more of them. – charge_state_3 6 months ago
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3

Answering this needs the titration history, because going faster than the schedule is the single largest modifiable factor.

Anticipating a slower-than-label titration from the start is a legitimate approach and costs only time, since the exposure ceiling is the same.

Everything except constipation attenuates. Plan differently for that one.

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DS
answeredDr_Hanne_Solberg36k2714 Mar 2025
5Thank you — this is the answer I was looking for. – Dr_Priya_Raghunathan 4 months ago
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Your answer

Ask PeptideStack is a static archive. Posting is closed, but the norms are worth stating: answer the question that was asked, show your working, cite the trial or the certificate, and say plainly where the evidence runs out.

Not medical advice. Research-use-only compounds are not approved for human use.