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Sourcing · Regulatory

How compounding permissions changed when supply normalised

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Solved by m.perrin in post #5
This follows post #2 rather than contradicting it. One more thing on compounding permissions that took me far too long to see: the two figures people quote are not measuring the same quantity. Once you notice that, the apparent contradiction disappears.

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GC
glossary_checkTL2Member14 Dec 2024#1

Asking directly, because I could not find a straight answer: How compounding permissions changed when supply normalised

I was wrong about compounding permissions in a thread last spring and I would like to correct it publicly rather than quietly.

The error was in the units, which changed the conclusion by an order of magnitude. Setting out the corrected version, and the way I now check for that class of mistake.

0 likes 19mo
CC
c.cardosoTL220 Dec 2024#2

A compound in a compounding pathway in one country and unavailable in another is a common situation and produces most of the confusion here.

2 likes 19mo
CC
c.correiaTL225 Dec 2024#3

Understood, and I withdraw the assumption I opened with.

9 likes 19mo
ME
me.eriksenTL229 Dec 2024#4
c.correia, post #3: Understood, and I withdraw the assumption I opened with. Go to post

Everything in the opening post holds. The case it does not cover is the one I have.

An indication approved for one age range does not extend to another, and paediatric extensions are separate decisions with separate evidence.

That holds under the stated conditions and I have stated them.

21 likes in reply to #3 19mo
MP
m.perrinTL2 Solution2 Jan 2025#5

This follows post #2 rather than contradicting it.

One more thing on compounding permissions that took me far too long to see: the two figures people quote are not measuring the same quantity. Once you notice that, the apparent contradiction disappears.

7 likes 19mo
SK
s.karlsen_rphTL3Pharmacist6 Jan 2025#6

Generic or biosimilar entry depends on patent and exclusivity positions that are jurisdiction-specific and are frequently misreported.

That has been true for the cases I have seen and I have not seen many.

5 likes 19mo
FS
f.sjobergTL29 Jan 2025#7
me.eriksen, post #4: Everything in the opening post holds. The case it does not cover is the one I have. An indication approved for one age range does not extend to another, and paediatric extensions are separate decisions with separate evidence. That holds under the stated conditions and I have stated them. Go to post

What I can speak to on compounding permissions is narrow, so I will keep it narrow rather than generalising from it. Beyond that boundary I do not know.

14 likes in reply to #4 19mo
DO
dr_okonkwoTL4 Moderator12 Jan 2025#8
s.karlsen_rph, post #6: Generic or biosimilar entry depends on patent and exclusivity positions that are jurisdiction-specific and are frequently misreported. That has been true for the cases I have seen and I have not seen many. Go to post

I read post #4 twice before replying, because I had assumed the opposite.

Since compounding permissions keeps coming up, it should probably be a maintained page rather than a recurring thread. I am happy to draft it if someone with more direct experience will review it.

29 likes in reply to #6 18mo
JD
j.delacroixTL3Regular16 Jan 2025#9

Picking up post #6: that is the part I would want checked first.

If you can confirm or contradict a position for your own region, please date the answer. An undated regional claim is the least useful thing in this category.

A modest claim, modestly supported.

2 likes 18mo
SO
sa.okonkwoTL219 Jan 2025#10

On post #8 — agreed on the reasoning, with one qualification.

The failure mode on compounding permissions is boring rather than dramatic. It is almost always the step everyone assumes was done correctly because it is too simple to get wrong.

9 likes 18mo
KK
k.kuuselaTL222 Jan 2025#11

Post #7 describes the usual case. This is about the unusual one.

Where a claim about legality is made here, the useful follow-up is which instrument it rests on. Most such claims turn out to rest on a forum post.

I would put this at better than even and not much better.

1 like 18mo
NR
n.rowntreeTL3Regular25 Jan 2025#12

Fine by me. I had wanted a stronger conclusion and there is not one available.

0 likes 18mo
HC
h.castellanosTL228 Jan 2025#13

An honest declaration on compounding permissions: I have a prior here and it is strong enough that you should weight what I say downward. Stating it rather than hiding it.

15 likes 18mo
FE
footnote_entryTL331 Jan 2025#14
SV
s.vogelTL23 Feb 2025#15

Answering the question post #11 raises rather than the one it answers.

Nothing in this subcategory is legal advice, and the members who work in regulated environments are the most careful to say so.

0 likes 18mo
K
KStephanopoulosTL3Regular6 Feb 2025#16

Small methodological point on compounding permissions: repeating a measurement is cheap and resolves most of what is being argued about here at no cost to anyone.

30 likes 18mo
TB
t.batistaTL28 Feb 2025#17

Compounding permissions looks different depending on whether you are reading the primary literature or the summaries of it, and the difference is not in our favour.

10 likes 18mo
I
IsaksenTL3Regular11 Feb 2025 · edited#18
KStephanopoulos, post #16: Small methodological point on compounding permissions: repeating a measurement is cheap and resolves most of what is being argued about here at no cost to anyone. Go to post

Generic or biosimilar entry depends on patent and exclusivity positions that are jurisdiction-specific and are frequently misreported.

That is the version I would defend. It is not the version I started with.

3 likes in reply to #16 18mo
MN
m.ndiayeTL214 Feb 2025#19

I think the compounding permissions question is answerable and has not been answered, which is a more optimistic position than most of this thread.

5 likes 17mo
BP
bench_peakTL3Regular17 Feb 2025#20

Adding a null result on compounding permissions. I looked, carefully, and found nothing, and null results deserve posting precisely because they never are.

0 likes 17mo
DO
d.oyelaranTL3Pharmacist19 Feb 2025#21

If you can confirm or contradict a position for your own region, please date the answer. An undated regional claim is the least useful thing in this category.

0 likes 17mo
NK
n.krastevTL222 Feb 2025 · edited#22

I read post #18 twice before replying, because I had assumed the opposite.

An indication approved for one age range does not extend to another, and paediatric extensions are separate decisions with separate evidence.

2 likes 17mo
BD
baseline_driftTL2Analytical chemist24 Feb 2025#23
m.perrin, post #5: This follows post #2 rather than contradicting it. One more thing on compounding permissions that took me far too long to see: the two figures people quote are not measuring the same quantity. Once you notice that, the apparent contradiction disappears. Go to post

Adding what did not work for me on compounding permissions, since the failures never get written up and they are half the useful information.

9 likes in reply to #5 17mo
IA
id.almeidaTL227 Feb 2025#24

That is consistent with mine, for whatever one more account is worth.

21 likes 17mo
BV
bias_varianceTL4Biostatistician1 Mar 2025#25

Two sentences on compounding permissions and then I will stop, because the rest is speculation and the thread is better without mine.

What is documented is narrow. What is inferred from it is broad. The gap between them is where every argument here lives.

0 likes 17mo
DF
d.ferreiraTL24 Mar 2025 · edited#26

Where a claim about legality is made here, the useful follow-up is which instrument it rests on. Most such claims turn out to rest on a forum post.

5 likes 17mo
TN
t.nardoneTL3Regular6 Mar 2025#27
c.correia, post #3: Understood, and I withdraw the assumption I opened with. Go to post

Taking post #25 at face value and following it one step further.

Compounding permissions: I would want to see the raw numbers rather than the summary before agreeing. Summaries lose exactly the information that would settle this.

14 likes in reply to #3 17mo
TI
t.ibarraTL29 Mar 2025#28

The reason compounding permissions is hard to answer is that the obvious measurement and the relevant quantity are not the same thing, and substituting one for the other is silent.

28 likes 17mo
IC
i.coelhoTL211 Mar 2025#29

Thank you for the correction. I would rather find out here than later.

2 likes 17mo
CD
c.dahlbergTL214 Mar 2025#30