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ForumsOral GLP-1 AgonistsOrforglipron Phase 3 ATTAIN-1 topline — anyone have experience?

Orforglipron Phase 3 ATTAIN-1 topline — anyone have experience?

steve_okc Sat, Apr 26, 2025 at 11:16 AM 30 replies 1,800 viewsPage 1 of 6
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steve_okc
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Oklahoma City, OK
Apr 26, 2025 at 11:16 AM#1

Reading the phase 2 write-up next to the injectable trials, and the comparison people keep making does not survive putting the two protocols side by side.

What I actually want to know is whether a non-peptide oral agonist can match injectable exposure in practice, or whether the convenience is bought with a lower ceiling.

I have searched first, so if this is covered somewhere point me at it and I will read it.

17 12NauseaFreeNow, SteveThurs, B12Beth and 14 others
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Dr.SleepRoch
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Apr 26, 2025 at 12:02 PM#2

Short answer first, then the reasoning. Read four things before the headline number. The population, because trial populations are selected and supported in ways that real cohorts are not. The comparator, because "better than placebo" and "better than the current standard" are different claims and get reported identically. The primary endpoint as pre-registered, because a secondary endpoint promoted after the fact is a hypothesis rather than a finding. And the completion rate, because a large effect in the half of participants who finished is a different result from a large effect in everybody enrolled.

16 11kim_atl_prep, sarah_TO, wendy_avl and 13 others
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Dr.EM_Chicago
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Apr 26, 2025 at 12:48 PM#3
Dr.SleepRoch said:
Read four things before the headline number.

No disagreement with Dr.SleepRoch. One condition attached. Orforglipron is a small molecule rather than a peptide, which is the whole point: no SNAC absorption enhancer, no fasting window, no cold chain, and oral bioavailability in the tens of percent instead of around one. Phase 2 put it near 14.7% weight loss at 36 weeks on the top dose with a side-effect profile that looks like the injectables.

15 10Dr.ReproEndo, lucas_SP_BR, lisa_labSD and 12 others
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paige_pharma
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Apr 26, 2025 at 1:34 PM#4
steve_okc said:
Reading the phase 2 write-up next to the injectable trials, and the comparison people keep making does not survive putting the two protocols side by…

Agreed, and subgroup analyses deserve particular suspicion. With enough subgroups something is significant by chance, and pre-registered subgroups are a different animal from ones found afterwards.

14 9lisa_labSD, adam_van, Dr.SurgeonPGH and 11 others
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Dr.PainCLE
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Apr 26, 2025 at 5:53 PM#5

Clinical perspective, offered as context rather than as advice. It helps to say which part of this you are uncertain about. A precise question gets a precise answer; a general one gets everybody’s favourite anecdote.

Last edited: Apr 26, 2025 at 8:53 PM
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