Off-label
In
medical-speak “off-label” is when a drug is use for a purpose it was never
actually approved for. If you have
straight forward diseases, you would never need to use a drug “off label”.
In
some countries off-label prescribing by doctors is totally discouraged, in
others, it is quite common.
The
problem occurs when it comes to paying for expensive drugs and, of course, who is to
blame if things go wrong.
Since
many drug discoveries are actually stumbled upon by chance, off-label drug use
is not as crazy as it may sound.
Socialized Healthcare, Private Insurance
and Lawsuits
In
the developed world, healthcare is provided either via some kind of private insurance as
in the US, or it is via the State, as in Europe. If your insurer is unwilling to pay for off-label
treatments, you will not get them (unless you pay yourself). In the UK, if the treatment is not endorsed
by NICE (in effect, the State), you are not going to get it. In the old days, the doctor might have been
willing to try some off-label drugs, but now they are likely to be more worried
about being struck of the medical register for malpractice, or, in the US,
being sued.
So,
all over the world off-label prescribing is getting rarer. Certain states in the US are more liberal,
Florida I believe is one.
Your
healthcare is really in the hands of big brother; in general, this is not a bad
thing. If you have some rare,
“untreatable” condition, then the problems start. Even if you know what off-label drug you
want, you will struggle to get it. You
will even struggle to get any unusual blood tests done.
In
some countries the system is much more liberal.
If you want to measure potassium in your blood or maybe IGF-1 or
serotonin, the process is akin to having your dry cleaning done. You pay and it gets done.
Off-Label in the US
Before
insurers tightening things up in the 1980s, doctors in the US seemingly were
able to prescribe pretty much what they wanted.
If you read about some of the things prescribed for severer cases of Fibromyalgia,
you would be amazed at the things they used (IVIG, Baclofen, Oxytocin etc.) and
how the underlying principle was one of trial and error.
Due
to the unusual position of osteopathic medicine in the US, where osteopaths have
the same drug prescribing rights as medical doctors, there are many “alternative”
doctors practising what they call “holistic medicine”. Then there is a small army of DAN doctors,
some of whom are medical doctors and some are not. You also have a large number of chiropractors
in the US; graduates of chiropractic schools receive the degree Doctor of Chiropractic (DC), as I was told
by a reader of this blog, US Chiropractors do not prescribe drugs, but they do treat kids
with autism (I am not sure how).
So
it looks like, while the golden days are over, off-label drug prescribing is
alive and well in the US.
From Off-Label to On-Label
You
would think that once an off-label therapy gets established, it would be able
to transition to on-label, and become an accepted mainstream therapy. This does not happen very often. The doctors using off-label widely, are seen
as quacks by some established doctors and by much of the public. If they are treating unusual, hard to define
conditions, it is hard to carry out controlled clinical trials, and nobody has
an interest to pay for them anyway.
So,
off-label tends to stay off-label and for most people, untreatable conditions
remain untreatable.
Polypill
I
am wary of my ideas being seen as risky, off-label, quack nonsense. They certainly are off-label uses.
I
think you should be able to transition from off-label to on-label. If the disease is just a cluster of symptoms
and pathologies, it will be hard to identify the sub-type for which the therapy
is effective. This applies to both
autism and indeed fibromyalgia.
To
move away from the very unscientific, and indeed wasteful, trial and error
approach, you have to be able to use reliable biomarkers or diagnostic
tests. You would have to prove to a very
cynical public, that you are not spouting nonsense.
Then
faced with a therapy which can be shown effective consistently, albeit for a rare,
very well defined, condition (based on blood tests etc.), there is no good
reason why the therapy should not go on-label.
The
question now with the Polypill is to be able to identify with >75% certainly
for whom it will be effective. I also
need to understand, and indeed predict, when it might stop working. This may sound very strange, but can happen.
Predicting
when it might stop working, as well as suggesting what to do should that occur,
makes things tricky. To do it perfectly you would really need the old school
off-label doctor, and a vast amount of consultation time, that will not be
available.
I
live in a country where access to lab tests is very open and they are
inexpensive, so I have come up with a testing strategy to accompany the
Polypill, using tests that are inexpensive.
The
idea of the tests is twofold; to identify the sub-group of children who will
benefit from the Polypill therapy and to establish a baseline of markers to
later understand any cases, should the Polypill “stop working”
Blood
tests
·
IGF-1
·
Serotonin
·
Free T3
·
Cholesterol LDL & HDL
·
Histamine
·
Inflammatory markers CRP and
IL-6
·
Potassium
I
would also use the TRH stimulation test, except it is not available where I
live and requires several blood draws. It shows central hypothyroidism to be common
in autism (as it is, interestingly, in fibromyalgia).
I
am expecting any loss in efficacy of the Polypill to be accompanied by a surge
in histamine and/or the easy to measure inflammatory markers, C - reactive
protein (CRP) and Interleukin-6.
The
trials would take place in winter (no pollen) and would exclude people with
food allergies, digestive disorders, IBD, IBS, pancreatic enzyme deficiency etc. The trial would be exclusively for early
onset autism, no regression.
People
with seizures would be very welcome and might form a separate subgroup within
the test; I expect the incidence of seizure and epilepsy to be reduced by the
Polypill.
Having created a trial based on children with elevated IGF-1, Serotonin, Free
T3 and Cholesterol, I would then continue to measure all the above indicators on
a monthly basis.
Assessing Success
Since
the Polypill has several active ingredients, I would expect a marked reduction
in autistic behaviours, based on any established autism rating scale. I would expect parents, teachers and
therapists to be really impressed by the effect.
Using
the above screening biomarkers to select the trial group, I would hope to
achieve a successful outcome in a great majority of cases. This success rate has to be measured. Perhaps the screening exclusions and biomarkers
are too restrictive, or not restrictive enough.
If it was 100% effective, they should be relaxed; if it was 50% they
should be tightened.
What
intrigues me are the cases where the Polypill may stop working after a period
of success. If this is understood, it
will be another step in understanding the dynamic nature of autism. If the loss in effect can be correlated to an
increase in histamine, in some cases, I will know what to do. If in some cases CRP and IL-6 rise but
histamine and serotonin do not, we would know that the immune system had been
activated, but mast cells have not degranulated. In these cases it would require the,
currently under development, “Autism Toolkit”, to provide some immuno-modulatory
therapy.
Just
as abruptly as the Polypill might stop working in a child, I expect it will
start working again, when the external stimulation (whatever it might be) has
been withdrawn.
In
children who have a permanent state of over-activation of their immune system,
they should have sky high CRP and IL-6 and the Polypill will never start to
work in the first place. High inflammatory
markers are seen in regressive autism, according to Ashwood, who is on my Dean’s
List.
EMA
Having
rationalised my objectives, I am finalizing my initial submission to the European
Medicines Agency, to see whether the Polypill should remain Peter’s off-label curiosity,
or become an Orphan Drug, to share with others.
All the very best Peter.
ReplyDeleteI do see Ashwoods study very interesting along with that of Vargas et al 2005 specifically comparing R-ASD markers, it was interesting they also compared behaviour to the various cytokines, considering my sons chronic skin bacterial infection was a trigger to a change in behaviour and him losing skills over a period of 12 months at the onset age of 2 and sterotypical behaviour and obsessions appearing at age 3.5, I do see statins and prednisone (worried about side effects also will have to take a doc on board which is difficult) as an effective therapy as well.
ReplyDeleteWe also have CRP, Electrolytes and HDL LDL and other kinds of testing easily available.
Is it possible this inflammation/immune activation can also cause a shift in GABA E/I balance.
He's 5 years old. I have started the Bumetanide trial from today and I have started on 0.25mg dose twice a day and will titrate upto 0.50 mg twice a day by day after tomorrow, will have to see what this has in store for us and then move on to statins (I just trialed it for one day). I thought bumetanide is a safer and sensible first option.
At 0.25 mg there were three trips to the washroom within half an hour, the second one was verrry urgent, I thank God he is trained.