All posts tagged Nath

East African Disease Informs Nath’s Search for the Cause of ME/CFS

Could a disease found in the remote villages of East Africa end up being a model for chronic fatigue syndrome (ME/CFS)?

Ugandan Village

Ugandan Village (from the NIH)

Dr. Avindra Nath – the leader of the NIH Intramural study on ME/CFS –  thinks perhaps so. He’s not daunted by mysterious diseases and nor should he be. Just a couple of years ago his NIH team was able – by bringing new technology to bear – to unravel a mysterious disease plaguing children in Africa. Using a much larger array of tests he’s hoping to do the same in ME/CFS.

Nath became acquainted with “nodding syndrome” at a meeting in Uganda in 2012. This strange and often devastating disease, found in the remote regions of Uganda, Tanzania and South Sudan, causes children’s heads to periodically nod  and can produce seizures, mild to severe cognitive impairment, muteness, gait problems, paralysis and often death. Brain scans have shown significant brain atrophy.

Studies suggested that the disease was linked to a parasite, Onchocerca volvulus, carried by the black fly, but numerous efforts to find the parasite in the brain or cerebral spinal fluid failed.  Attempts to tie it to immune factors including autoantibodies, as well as genetics, toxins, nutritional factors, and others came to naught as well.

Like ME/CFS the speculation regarding the cause of nodding syndrome has been rife with possible connections to autism spectrum disorder, Alzheimer’s, poor nutrition, PTSD and others being put forth. Ugandan psychiatrists have even proposed that the disease is a form of “Developmental Trauma Disorder” brought on by the war.

Enter Nath, Tory Johnson, a former postdoc fellow of his, and Thomas Nutman, a National Institute of Allergy and Infectious Disease (NIAID) researcher.  Suspecting the problem was autoimmunity, they brought out one of their big guns – a kind of protein chip technology that allowed them to screen for thousands of antibodies at once.

The results were tantalizing. The levels of four antibodies were 100 fold higher in the sick children compared to the healthy children.  Further testing revealed that two of these antibodies were more reactive or active in the sick children. They ended up focusing on one antibody found in both the blood and cerebral spinal fluid.

This antibody – which was linked to the leiomodin-1 protein  – reacted 33,000 times more strongly in the children with nodding syndrome.  Interestingly, both groups – the sick and the healthy children – carried the antibodies, but they were elevated in the sick children.

Leiomodin-1 staining neurons

Staining reveals Leiomodin-1 antibody (green) interacts with human neurons

After finding this link, they deepened their search. The leiomodin-1 protein had been found primarily in smooth muscle tissue and the thyroid, but if it was causing the neurodegenerative symptoms it had to be in the brain as well. Further testing, including immunostaining human neurons, indicated that protein was indeed found in parts of the brain imaging studies had indicated were associated with nodding syndrome.

Having established a putative link between the antibody and the disease (that it was found in and could potentially affect the brain) the next step was to demonstrate that the antibody could indeed be causing the disease. Subjecting cultured human neurons to the antibody showed that the antibodies could indeed be damaging the childrens’ neurons.

Getting at the source of the antibody was next. The authors hypothesized that an immune attack against the parasitic worm had gone awry and was attacking the ill childrens’ neurons. This could only happen, though, if the parasitic worm and human neurons shared genetic sequences that could cause the immune system to mistakenly attack human neurons. Studies confirmed that a very short sequence of the parasite’s tropomyosin gene was quite similar to a sequence expressed in human neurons.

autoimmune responses ME/CFS

Nath believes the infections may have triggered a variety of autoimmune responses targeting the brain in ME/CFS

With that, the circle was closed. They had identified an antibody, shown it was in the brains of the sick children, showed that it could do damage to the neurons that were damaged in the children, and demonstrated similar genetic sequences were present in the parasite and humans.

There was still the nagging issue of antibody prevalence, though.  Only slightly over 50% of the sick children had antibodies to leiomodin-1. If the antibody to leiomodin-1 was causing the disease in these children, what was causing the disease in the others?

Nath et al proposed that the parasite triggers a different immune response in different children.  Some of the children developed autoantibodies that damaged neurons in their CNS  – and produced nodding syndrome (which is now understood to be a form of autoimmune epilepsy).

This syndrome is likely not a disease mediated by a single immune specificity. We speculate that nodding syndrome may not be a single antibody syndrome.  Nath et al.

Citing test results which showed a range of elevated autoantibodies in the sick children, they suggested that some children with nodding syndrome have developed antibodies to  neuronal proteins other than leiomodin-1.

A Model for Chronic Fatigue Syndrome (ME/CFS)?

Nath reported that his approach to ME/CFS has been shaped by his experiences with nodding syndrome. He suspects the infectious onset that so many people with this disease experienced triggered their immune system to accidentally produce autoantibodies that are attacking their central nervous system or other parts of the body.

If suspect antibodies show up, future research efforts will presumably proceed down the same pathway as they did in Nodding Disease: first they will identify the proteins the antibodies are attacking, and then they will determine where those proteins are found, and demonstrate experimentally that the antibodies are likely doing damage.

Nath and his compatriots uncovered the antibody connection to nodding disease seven years ago – a long time in this age of fast moving medical technology. Nath reported he’ll be using a newer approach involving mass spectrometry, or phage display, in ME/CFS which will allow him to “probe almost infinite numbers of proteins/peptides”.

Seven years ago, extensive testing had failed to find a culprit leaving the cause of nodding syndrome a complete mystery. In 2017 Nath et. al. produced a clear pathway that explains about 50% of nodding syndrome victims.

Technology Paves the Way

Note that the breakthrough didn’t come from the slow accumulation of results over decades; –  it occurred very quickly and simply required the right technology being applied to the disease. When that happened, a cause of the disease became clear, and researchers simply proceeded down established pathways to prove  it.

Nath and the NIH are looking at much more than antibodies in their intramural study, and ME/CFS, with its multiplicity of triggers, is likely to be more complex than nodding syndrome. The same principle, though, – a variety of autoimmune processes produced by an infectious trigger – may apply.

Dr. Nath appears to have gotten at a cause of one mysterious disease. May he be as successful with this one.

Check out an interview with Dr. Nath

Dr Nath Talks on the ME/CFS NIH Intramural Study

The NIH’s Accelerating Research on ME/CFS Conference

Because of a death in the family, Brian Wallitt will be presenting in Dr. Nath’s place at the NIH conference. Dr. Nath reported that Wallit will present on the high rate of rare diseases found during the first half of the study and some other data but will not present statistical analyses. With just half of the projected participants having finished the first part of a two-part study, the lack of statistical analyses is not really a surprise.

Brian Wallitt will be presenting at 10:00 AM EST on April 5th (day two) of the Accelerating Research on ME/CFS conference – the first NIH sponsored research conference on the disease since 2011. Check out the agenda here.

Learn more about the NIH Conference below.

NIH Brings in New Faces and Looks to the Future in Accelerating ME/CFS Research Conference

A Former Doctor Goes Through the NIH’s ME/CFS Intramural Study

Robert’s Story

Robert, an MD, is board certified in internal medicine. After the worst flu-like illness he ever had, he ended up in the hospital.  A regular exerciser prior to becoming ill, his legs were so weak that he could hardly walk afterwards.

His path to a chronic fatigue syndrome (ME/CFS) diagnosis was rapid. Three months of testing left him no other conclusion – it was clear to him that he had ME/CFS.  He was able to work on and off for a few years, but his health has deteriorated. He’s been unable to work for the last three years.

ME/CFS diagnosis

Robert, a former MD, was able to rapidly diagnose himself but remains severely ill.

Thankfully, he had a wide array of doctor friends who knew him before he became ill and didn’t encounter the skepticism and invalidation so commonly experienced in our community. He noted that our current medical culture doesn’t offer much for the complex patient. Doctors are busy and often time-constrained and if you don’t fit into one of the medical pigeon-holes, they don’t have much to offer.

Rating his level of health on a scale of 1-10 at 2, he’s one of the sickest, if not the sickest, ME/CFS patient to participate in the grueling two-part intramural study at the NIH. He was the first patient to go through the second phase of the Intramural trial which involved, among other things, the exercise study and an extended stay in a metabolic chamber.

One theme – validation – cropped up several times during Robert’s week long stay at the NIH hospital in Maryland. It was clearly apparent from the gestures of sympathy from the occupational therapist during a test to assess functioning.  Given cards which identified an activity, Robert put them into two piles – activities he used to do and activities he still did. The occupational therapist – who has probably given this test hundreds if not thousands of times – registered dismay at the few cards left in his “still do” pile. Those few cards left made the extra level of devastation that ME/CFS is so good at causing clear. It’s rare for people who are not elderly to be so sick.

Given his abysmal level of functioning, Robert’s willingness to participate in a study that Dr. Nath thought few might be willing to undergo was a real testament to the courage and determination that so impressed Dr. Nath. Despite Robert’s low functional level (1-2 on a 10-point scale), he was disappointed that the NIH was not doing a two-day exercise test (!).

The second part of the study is centered around the exercise stressor. Participants do cognitive testing, blood tests, the Seahorse mitochondrial test, a functional MRI and transcranial magnetic stimulation before and after the maximal exercise test.  (The NIH communicated with the Workwell Foundation on doing the exercise test with ME/CFS patients).

Exercise is finally getting its due in ME/CFS, and over the next couple of years several large studies should tell us much. With its extensive blood draws and millions of data points, Dr. Klimas’s exercise studies have informed her models of ME/CFS and laid the foundations for her clinical trial.  With help from the Solve ME/CFS Initiative, David Systrom has added gene expression to his already complex invasive cardiopulmonary exercise testing.  Maureen Hanson has incorporated exercise into her large NIH Research Center studies at Cornell, as well.  None of these studies, though, can match the sheer breadth of this NIH exercise study with its brain scans, lumbar punctures, Seahorse data, blood draws, etc..

Metabolic Chamber

Robert spent about three days in the metabolic chamber – a sparse box containing a bed and a toilet that’s designed to produce precise measures of metabolic activity – before and after the exercise test.  (I will expand on the metabolic chamber).  He wore an EEG, blood pressure and Holter monitor, while in the chamber.

Only thirty metabolic chambers exist in the world, and three of them are at the NIH. With 400 metabolic chamber studies underway every year, they’re pretty much in use all the time. These airtight 11-by-11.5-foot rooms aren’t much to look at or stay in: they come with a bed, an exercise bike, a toilet, and nothing else. Precisely measured meals are delivered through a small, air-locked opening in the wall.

metabolic chamber NIH

An early metabolic chamber at the NIH in 1957

Metal pipes running along the ceiling that measure oxygen consumption and CO2 production allow researchers to precisely calculate an individual’s metabolic rate.  From the O2 and CO2 readings, researchers can calculate calories burned and what type of fuel (carbs/fats) was used to burn them. Urine is collected to assess protein oxidation.

Metabolic chamber studies have demonstrated how flexible the body is with respect to metabolism. One reporter wrote, for instance, that they’ve debunked the idea that ketogenic diets (high-fat/low-carb) cause the body to burn more fat than high-carb diets.

Energy is burned in our body in three ways. It turns out that simply staying alive is pretty energy intensive. Most of the calories we burn (65-80%) are used simply to keep our body running (basal metabolism). Digestion is no walk in the park either; digesting our food takes up about 10% of the calories we burn in a day, with physical activity accounting for the remainder (10-30%).

If ME/CFS patients’ metabolic production and ability to produce energy is altered by exercise – as Workwell’s and Dr. Keller’s tests suggest it is – that will hopefully be picked up by the metabolic chamber.

Robert noted that if they can pair the findings from the metabolic chamber – which is measuring the metabolic effects of exercise – with the Seahorse tests- which are measuring energy production on the cellular level, they may really be onto something.

Brain Scan

The functional MRI – which Robert said was combined with a cognitive test – will assess the impact of exercise on a) cognitive functioning and b) brain functioning. A similar study by the CDC suggested that exercise negatively impacted both cognitive and brain functioning.

People who do cognitive tests tend to improve the more they do them but not in this case – not in people with ME/CFS after exercise.  Familiarity did not breed more competence. Despite doing the tests multiple times, the people with ME/CFS did worse and worse on them after exercise and the brain scans indicated why. Exercise had knocked out one area of the brain devoted to sustained attention causing the brain – in a mostly futile attempt to compensate – to increase activity in other parts of the brain (devoted to executive functioning).

A Chronic Fatigue Syndrome Brain on Exercise – Not a Pretty Sight

The end result was that people with ME/CFS expended more effort during the cognitive test and yet did worse. By the end of the test they were making about double the errors of the healthy controls.

rTMS Test

motor cortex

The rTMS test appeared to be designed to stimulate Robert’s motor cortex to activate his muscles.

The repetitive transcranial magnetic stimulation (rTMS) test proved enormously interesting but physically draining.  Robert reported that in a process that took hours, data from a previous fMRI was used map the exact location of his motor cortex in order to stimulate the muscles of his right hand/fingers.  The goal was apparently to determine the speed at which the signal traveled from the brain to the muscle of his finger before and after exercise.  A time delay after exercise would presumably indicate that exercise had interfered with the ability of the motor cortex to activate the muscles.

A 2003 study, in fact, suggested that reduced muscle recruitment due to reduced motor cortex output was occurring in ME/CFS. The motor cortex, it turns out, plans our movements in advance. The study, titled “Deficit in motor performance correlates with changed corticospinal excitability in patients with chronic fatigue syndrome“ suggested that problems in the “motor preparatory areas of the brain” might be hampering physical movements in ME/CFS. It has never to my knowledge been followed up on.

rTMS has relieved pain in fibromyalgia but it had the opposite effects in Robert. He wasn’t clear whether it was the effects of the rTMS or the rigors of setting up the test itself or both which triggered for him what turned out to be an extraordinary bout of PEM (post exertional malaise). The 2 hours it took – sitting up – to get the electrodes correct was in itself draining. (He suggested that they use a reclining chair for future patients if possible.)

At the end of test Robert felt exhausted and experienced transient vertigo, auditory disturbance, headache and sensitivity to light and noises.  His nurse was shocked at how poorly he looked.  He’d mentioned the documentary Unrest to her the day before. After seeing the movie, she said she could better appreciate what he was going through. (Hopefully she knows that watching the film will get her continuing medical education (CME) credits)

The rTMS test proved immediately much more exhausting than the exercise test, the effects of which took a day to kick in. The rTMS specialist/researcher was surprised at the effect the test had on Robert and its cause is unknown. Was it the long preparatory period or the activity of the rTMS machine on the muscle activation pathways or both?  It’ll be fascinating to see how other patients fare.

Robert was also tested for small fiber neuropathy via skin biopsy, underwent a post exercise lumbar puncture and quadricep muscle biopsy.  The possibility of integrating the brain scan, cerebral spinal fluid, Seahorse and metabolic chamber results after exercise – not to mention the immune tests – is an enticing one for sure.

NIH intramural ME/CFS study data collection

The study, which is going to generate an enormous amount of data, is still several years away from completion.

Plus there are the muscle biopsy results. Robert’s experience of a rather hefty muscle biopsy suggests that the NIH is not stinting on this area – which Dr. Nath believes may tell us much about ME/CFS.

Plenty of rest periods were provided during the study but at times the testing was lengthy, and the study, predictably, ended up being a rather grueling seven days for this courageous but very disabled ME/CFS patient. Participating in it wasn’t easy but the fact that Robert, even with his abysmal level of functionality, made it through it and recovered, was a good sign. Robert said he was touched by a chaplain who stopped by to see how he was doing.

He’s stayed in touch with the investigators from time to time alerting them of developments in the ME/CFS field.

Participating in the Study

The NIH needs more participants. If you’re interested in helping to further ME/CFS research by participating in the study, check out the study criteria below.

All participants must be 18-60 years old and have at least a 7th grade education. People whose ME/CFS started after an episode of infection and who have severe symptoms lasting from 6 months to 5 years are eligible to participate in the study.

Find out how to participate here.

Learn more about the Intramural Study

Dr Nath Talks on the ME/CFS NIH Intramural Study

Dr Nath Talks on the ME/CFS NIH Intramural Study

It looked like we were going to be late … again. It was pouring cats and dogs as we eased the van around tangled web of streets that is the NIH campus scanning glumly at the rain-obscured buildings. Even our guide on the phone seemed to be lost.

It had been a wild 12 hours. The night before, reaching up to turn on the fan on my brother’s porch, I’d let loose a rather large bug which tumbled into my eye. Howling with pain I stumbled off to the bathroom where I managed to wash it out – leaving my eye reddened and swollen. The next morning, my eye still swollen, my partner insisted I see an eye doctor.

 

NIH

Getting to Dr Nath’s office proved to be a challenge

To our surprise we found somebody. The problem was was that his office was right in the heart of downtown Washington DC. – where parking is scarce and traffic cops take their jobs very seriously. Finding no parking we stopped in a loading zone across from the doctor’s office, hoping that the big yellow van with it’s solar panels, Nevada license plate and all would for the next 15 minutes be taken for a loading van –

After being assured the appointment would be short, I dashed inside where I was  bombarded by frantic calls from my partner (who does not drive the van). She had immediately been accosted by first one then another traffic cop.

After seeing the doctor who informed me (for $250 dollars) that insects in the eyes almost never cause problems (but who did give me drops) I dashed back out to the van to find my now none-too happy partner.

We sped off in the rain – still seemingly on time for the appointment with Dr. Nath. Hauling up to the NIH we tried no less than three entrances – only to be turned away at each them (our oversize vehicle thwarting one attempt) – and directed to the next. Finally, as our appointment time came and went, we found the right entrance – for, ironically, delivery vehicles.

After going through an extensive (and time-consuming) security check we headed off into the labyrinth that is the NIH clutching small hard to decipher maps and immediately got lost. The  minutes continued to tick by and rain strengthened into a deluge and eventually we managed to steer onto the right street. Our guide, still on the phone, told us to stop, we jumped out of the car and looked up, rain pouring down, at a steep, muddy climb.

Five minutes later – 45 minutes late for our hour appointment, we strode, soaked and bedraggled into Dr. Nath’s office. He immediately set us at ease, and with his next appointment running late stayed overtime with us. We were there to talk about the NIH Intramural ME/CFS study.

The NIH Intramural ME/CFS Study

Dr. Nath informed us that the applications to be in the NIH Intramural ME/CFS study have been gratifyingly robust.  Dr. Nath noted that it was entirely possible that this is the most rigorously examined patient group ever assembled for a study.

Dr. Nath

Dr. Nath is leading the study. He has been around. He received his MD degree from Christian Medical College in India in 1981, completed a residency in Neurology from The University of Texas Health Science Center in Houston, did a fellowship in Multiple Sclerosis and Neurovirology at the same institution, and then another fellowship in Neuro-AIDS at NINDS.

Then it was up to Canada, where he held a faculty position at the University of Manitoba (1990-97), and then he was at The University of Kentucky (1997-02). In 2002, he became Professor of Neurology and Director of the Division of Neuroimmunology and Neurological Infections at Johns Hopkins.

in 2011, he became the Clinical Director of NINDS, the Director of the Translational Neuroscience Center, and Chief of the Section of Infections of the Nervous System. His research focuses on understanding the pathophysiology of nervous system infections and their outcomes, and the development of new diagnostic and therapeutic approaches for these diseases. He’s heavily involved in HIV research, the role endogenous retroviruses play in neurological diseases, and “undiagnosed neuroimmune and neuroinfectious diseases”.

He recently wrote a paper on Herpes Viruses, Alzheimer’s Disease, and Related Dementias: Unifying or Confusing Hypothesis?, which examined what role herpesviruses might be playing in dementia.

The NIH Intramural Chronic Fatigue Syndrome Study

The study takes place in two parts: a one week part which further assesses the potential participant and another one week section which measures a wide variety of parameters before and after an exercise test.

Requirements for entry are high, however, and not often met. You might say that many have been called – or rather have called – but few have been chosen. That was OK with Dr. Nath. “We need,” he explained, “to make sure that we’re studying the right population. That’s the best way to get to the answer, and then it’ll be broadly applicable.”

The response has been excellent.  Many people are traveling to participate, and they’re coming from all over. The NIH is even getting interest from people in other countries.

As of Dec. last year, 337 people had inquired about the study. One hundred and seventy-three were quickly screened out, and 164 participated in phone interviews. One hundred and twenty-seven made it to the medical record assessment stage.

Multiple reasons thwarted would-be participants from participating in the study.  The study required onset within 5 years which was triggered by infection. One-third had had the disease for too long, 20% had no evidence of infectious process (doctor’s records are required), 9% were too sick to travel, and just 3% were unwilling to have a lumbar puncture.

community ME/CFS

Nath noted that the ME/CFS community was very motivated to be in the study

The researchers were surprised at the last two figures. They expected, based on their experience from past studies, much higher percentages of people who were too sick to travel or unwilling to have a lumbar puncture. Dr. Nath well knows how difficult it can be to get people to participate in a study, but that’s not a problem here. Calling the numbers “very good”, Dr. Nath said the ME/CFS community was clearly “very motivated to participate in the study”.

It is not an easy study! It’s a two-part, two-week plus study on a population, which studies suggest, has the lowest functionality of any disease. The study includes a lumbar puncture, a maximal exercise test, several nights in a metal box (metabolic chamber), tilt table test, muscle biopsy, brain scans, lengthy neuropsychological tests and scads of blood tests. Every part of you is going to be probed.

Plus, you have to provide your entire medical history, get interviewed several times, and then, most likely travel.

Dr. Nath said he looked at the study – which is clearly larger and more intensive than most  – and said, “who is going to enroll in this study?” Laughing, he joked that, “I wouldn’t volunteer on my own study!” He was afraid no one was going to show up!  Instead he said the patients were very willing to undergo all the tests and are grateful for it.

Recruitment has been good, but as with any study, Dr. Nath said, it was high at first, and now it’s tailed off. As of March of this year, 19 ME/CFS patients and 21 healthy controls had completed the first phase of the study, and six people with ME/CFS and 7 controls had completed phase II.

Thus far, then, about half the projected participants (n=40 ME/CFS; 40 healthy controls) have gone through the first week of the study and about 15% have completed the entire study.

Quite a few people with autoimmune disorders have shown up during the filtering out process. Nath suggested that could be an interesting cohort to study on its own.  He’s also found quite a bit of head injury and loss of consciousness – which makes MRI and brain scans difficult to assess – and people with seizures and strokes. Interestingly, bnly one person had had a diagnosis of major depression….

High Percentage of Rare Diseases 

It’s a small sample set but it’s remarkable how many people participating in the first week were diagnosed with a rare disease. In something of a testament to the thoroughness of the study, almost third of week one participants (6/19) were found to have a rare disorder which the researchers believed was probably causing their symptoms and dismissed from the study. One appeared to have Parkinson’s Disease, another a neurological disease and I’m unsure of the others.

The study was designed to catch these people.  In fact because ME/CFS is something of a wastebasket diagnosis it went to extra lengths to ensure it was really studying ME/CFS.  Plus Dr. Nath reported that neurological diseases are inherently hard to diagnose anyway.  It is not unusual for people with multiple sclerosis, Parkinson’s, etc to be misdiagnosed with some other disease initially.  Plus, the opposite can happen (and has happened in ME/CFS) with some patients being misdiagnosed with M.S. for many years only to find later that they have some other immune disorder.

Big Data

They are gathering lots and lots of data – which brings its own problem. The study includes two different brain scans, blood, saliva, urine and stool samples, exercise data, tilt table data, spinal taps, Seahorse data, metabolic room data, cognitive testing, muscle and skin biopsies, and I’m probably missing some. I asked Nath, how will they able to integrate all this disparate data?

rare disorder chronic fatigue

Rare disorders are popping up at a high rate in the study group

Nath agreed that it was a challenge, but noted that that kind of challenge is a pretty common challenge now. Some of the really big Alzheimer’s and Parkinson’s studies contain thousands of individuals, each of whom has done thousands of tests. Computational biology has become a major part of medical research.

Google, not surprisingly, is collaborating with the NIH to create better ways to analyze data. Many of the discoveries in medicine today, Nath said, actually occur as breakthroughs in physics; MRI and CT scans, for example – came from physics.

Their general hypothesis is that an infection triggers brain and immune system issues (ranging from persistent immune activation to immune dysregulation) that stay stuck.  They don’t believe the nature of the infection is particularly important.

Check out a disease Nath believes could prove a model for ME/CFS

East African Disease Informs Nath’s Search for the Cause of ME/CFS

No Preliminary Findings Yet

Nath was unable to give me any preliminary findings. One reason is that they are storing samples so they can run them all at the same time. Another is that, echoing Ron and Mark Davis’s thoughts, they don’t want to even try to come up with hypotheses yet. They simply want to gather more and more data.

Making a conclusion on the basis of small samples is, Nath said, the kiss the death. They will not even try to interpret their findings until about half the study is done.

If, when they get to the end of the study, they see trends but don’t quite have a significant result, they’ll do sample size calculations to determine how many more patients they’ll need to see to get to statistical significance. If the calculation says do another 10 patients, they’ll probably expand the study to do 12 more. If the calculation says do another 100 patients, that’s too much.

They’re preventing another kind of bias by recoding the samples, so the analyst doesn’t know which are from patients and which are from controls.

The Study

Brian Vastag’s visit raised the issue of mitochondrial problems. Nath believes studying the muscle itself may be more important than assessing mitochondrial problems using the blood, and added muscle biopsies to the study. The muscle biopsies will be tested for DNA analysis, structural issues, and staining for various kinds of cells.

The Open Medicine Foundation and Ron Davis apparently believe likewise. They’ve pumped a million dollars into an ME/CFS Collaborative Research Center at Harvard lead by Ron Tompkins which will focus on figuring out what is going on in the muscles.

muscles ME/CFS

Dr. Nath believes the muscles could tell us much about ME/CFS

Because lots of patients have autonomic symptoms, the NIH is doing tilt table tests. Once those turn out positive, Nath said, the next question is why the autonomic nervous system problems are present. They’re doing small fiber neuropathy skin tests and examining the heart, peripheral nerves, adrenal glands, and sympathetic nervous system functioning.

I asked him if there were any surprises, and there were.  As Robert’s story will show, the NIH doesn’t seem to be prepared for the level of devastation ME/CFS can wreak in a relatively young group of patients.

Nath said his personal contact with the patients has led him to develop a real appreciation for the disease. These patients, he said, “are devastated”. Whether or not this study finds a cause, the reality, Nath said, is that the lives of the study patients are “totally messed up.” Then he made an important point.  Seeing the patients in the flesh naturally causes him and other researchers to develop additional empathy for them and “another level of appreciation” for them and their disease.

It was clear that just by being there and exposing the researchers and doctors at the NIH to this disease, the participants in the study are making a difference.  The lengths to which some patients are going to participate in this study are amply illustrated by Robert’s story.

Participating in the Study

The NIH needs more participants. If you’re interested in helping to further ME/CFS research by participating in the study, check out the study criteria below.

All participants must be 18-60 years old and have at least a 7th grade education. People whose ME/CFS started after an episode of infection and who have severe symptoms lasting from 6 months to 5 years are eligible to participate in the study.

Find out more here.

A former doctor on his experience going through the NIH’s intramural study

A Former Doctor Goes Through the NIH’s ME/CFS Intramural Study

The Big Fishing Expedition: Report From the NIH Intramural Study on ME/CFS

A Big, Deep Fishing ExpeditionNIH jpeg

“We’re throwing every known sophisticated technology at these patients.”

Avindra Nath, MD – Lead Investigator of NIH Intramural Study on Chronic Fatigue Syndrome

The NIH’s Intramural Study on ME/CFS now underway is almost certainly the most comprehensive chronic fatigue syndrome (ME/CFS) study ever done. In fact, it may be one of the more multi-faceted studies done in any disease. It’s breadth is astonishing. Besides the blood, urine, fecal matter and saliva gathered, participants will spend a night in a metabolic chamber, get their brains scanned, have their their immune systems transplanted into mice, and their neurons grown in a petri dish. After years of patient advocacy – at least in this one study – ME/CFS has abruptly transitioned from being one of the poorest studied diseases of all to getting an array of cutting-edge technologies thrown at it.

NIH intramural study net me/CFS

The NIH is casting a wide, wide net in its intramural ME/CFS study

Featuring top researchers at the NIH’s big research hospital its results are guaranteed to get noticed. This one study won’t solve ME/CFS – no one study can do that –  but it could and really should provide dramatic new insights into it, and, most importantly, provide the foundation for years and years of study into it.  Nath, for instance, recently suggested the study could produce the bio-signature we’ve been seeking for years.

The study is basically a huge fishing expedition, an anomaly for an institution known for its strict adherence to hypothesis testing. The NIH is looking (and building data) just about everywhere in patients.

We probably have NIH Director Francis Collins to thank for that. Collins has more control and discretion over the intramural site than any other part of the NIH and it shows. Collins got this study started before the NIH allocated money for the research centers. He wanted and got Avindra Nath – a highly prestigious researcher specializing in neuro-infectious diseases – to lead it and he got the NIH to bring out its fishing poles and fish.

Round One: The NIH’s “Deep Phenotyping Exercise”

Not only is the breadth of the study unusual, but the rigor with which it’s being run is unmatched. The first part of the study (participants come in for two rounds of testing) is partially being done to ensure that only one kind of patient participates. This is an important point since the ME/CFS disease population is very heterogeneous and mounting studies are identifying distinct subgroups.

In order to capture post-infectious ME/CFS patients, the study requires participants to have a sudden flu-like onset that’s been documented in a doctor’s files.  After taking questionnaire after questionnaire, a complete review of a patient’s medical records are being made by a panel of ME/CFS experts. Dr. Dan Peterson noted that one patient’s file ran to 191 pages (he said read every one). Dr. Peterson, longtime expert ME/CFS clinician and Simmaron Scientific Advisor, is reviewing patient selection for the NIH Intramural study.

Even the ME/CFS doctors reviewing the patient records have been taken aback at times with the strictness of the study. Dr. Peterson relayed one incident where Brian Walitt’s questioning of whether a patient should be included in the study raised eyebrows. (Walitt is the clinical lead investigator. Wallitt promptly dug into the Canadian Consensus Criteria to show the exact criteria the patient didn’t meet.)

Dr. Peterson noted that the reviewers have debated how “sudden” a sudden onset needs to be for someone to be included in the study. Does a patient have to remember the exact date they became ill or is something more general sufficient?

Another interesting twist concerns the rigor with which prospective patients have been tested. ME/CFS doctors that do more testing that others are more likely to find something that could kick a patient out of the study. That same patient coming from an ME/CFS doctor that doesn’t do a lot of testing might get into the study.

The first part of the study is apparently an attempt to level the playing field. Test after test after test is being done during the nine days a) to gather data and b) to ensure that nothing other than ME/CFS (and specified co-morbid diseases) is going on in these patients. At least in these early stages anything that looks off is being investigated. The NIH is calling the visit a “deep phenotyping” exercise.

An ME/CFS Patient Reports: Brian Vastag on Round One of the Intramural Study

It was fitting that Brian Vastag be one of the first ME/CFS patients to go through the first part of the study. He did after all, play a role in getting it started.

Vastag’s  “Dear Dr. Collins: I’m Disabled. Can the N.I.H. Spare a Few Dimes?” piece effectively used Vastag’s personal story to highlight the devastating funding problem and, importantly, provide a way out of the problem that was probably very appealing to Collins. (The dark humor in the piece didn’t hurt either.)

Francis Collins - Brian Vastag

Francis Collins, the Director of the NIH stops by for a visit. Vastag pushed for more ME/CFS funding and asked for ME/CFS to be assigned to a single institute

Vastag used to work for the NIH; in fact, Vastag worked with John Burklow, Francis Collins’ right hand man for communications for years. Vastag also worked with the Journal of American Medical Association (JAMA), and then reported for the Washington Post on science and medical issues. He knows the NIH well and used his personal connection to Collins to lobby for more funding.

He got in the study the old-fashioned way – by emailing the study recruiter.  In the months leading up to his stay, Vastag reported he had several conversations with the lead clinical investigator, Dr. Brian Wallitt, provided his medical records, was fully informed what he was in for and was provided several opportunities to bow out if he chose.

Thus far the reviews of Dr. Walitt from two people (Dr. Peterson, Vastag) participating with him have been positive.  Dr. Peterson said he found him attentive and interested, and Vastag, who said he spent a lot of time with him, found him available and dedicated.

Vastag spent five or six hours relaying his medical history to Dr. Walitt and nine full days in the NIH hospital. The history, he said, was very detailed.

Some people have worried that the ME/CFS patients well enough to participate in the NIH’s intramural aren’t sick enough to get results. Brian Vastag is exhibit number one why that hopefully is not the case.

When Vastag got sick he got really sick. At one point, he was 98% bedbound.  On his eighth or nineth doctor journey, Vastag saw neurologists and got checked out at a multiple sclerosis clinic.  Now he’s probably moderately ill for an ME/CFS patient and has to limit his walking to about 2 blocks a day; e.g. Vastag cant work at all, and he’s functionally very limited.

My guess is that if you can only walk two blocks a day without getting whacked there is something seriously, seriously wrong with you. Ditto with work; if you can’t work without getting hammered you have something seriously wrong with you that should be discoverable.

Having moderately ill people (by ME/CFS standards) participate in a study may not get the sickest patients in the study but it also brings with it the bonus that researchers don’t have to worry about the confounding factors that severe deconditioning brings. If there’s something to find in the testing the NIH is doing it should be found in these patients.

Cutting-Edge Technology

“I can’t believe they are letting us do all this stuff”.

Brian Walitt, MD MPH

The NIH is after all, throwing a lot of new technology at this disease. Vastag was told the intramural researchers have the green light to do a deep exploration of this disease and to let the evidence take them where it will.  They also have carte blanche to add to the study if the need arises.

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Avindra Nath stops by. Vastag said Nath had a great sense of humor. (Photo by Beth Mazur)

The head of Clinical Neurology at the Intramural Center, Avindra (Avi) Nath, heads the study. Nath has co-authored hundreds of journal articles and is on the editorial board of several journals. His main research focus – on the effects of infection on the brain – couldn’t be better suited to ME/CFS.

His latest paper on the cerebral spinal fluid in the survivors of the Ebola epidemic is exactly the kind of post-infectious work he’s been tasked with doing in ME/CFS. His 2016 review of Ebola survivors highlighted the functional declines seen in those who survived the outbreak. The study also noted that joint and muscle pains were “persistent problems” in more than half the 200 plus survivors assessed.

“Tellingly, the survivors reported a functional decline when compared with before the EVD outbreak. In comparison with the household contacts, the survivors were more likely to report a decline in both overall health (70% vs 18%) and ability to work (70% vs 7%).”

Nath told Dr. Peterson, after Peterson’s NIH talk on epidemic presentations of ME/CFS, that the Incline Village outbreak was probably an infectious encephalitis type of outbreak but that the technology at the time wasn’t up to diagnosing it. Nath has also collaborated often with Dr. Ian Lipkin on infectious diseases, and we know Lipkin’s work in ME/CFS is refining our understanding of immunity in the disease. Nath’s 2015 review paper demonstrated that the HIV virus may be able to survive in reservoirs in the brain indefinitely.

Nath will oversee a huge amount of work and do some cutting-edge work of his own. Using a new technique developed in his lab, Nath will knock out the immune systems of transgenic mice and give them the immune systems of ME/CFS patients.  He’ll also turn white blood cells from ME/CFS patients into “brains in a dish” neurons grown in the lab that Nath can then test. This technique, pioneered by Nath for other neurological diseases, can point highlight certain types of cellular problems.

A ton of data is being gathered in the first part of the study.  Besides his half a day of questionnaires, Vastag had standard labs done, provided his spinal fluid, did a sleep study, got 3.4 billion white blood cells drawn for Nath’s experimental studies, had his blood drawn for the Sea horse (mitochondria/energy production) study, had an EMG done to rule out muscle myopathy, did a tilt table test( positive for POTS), an MRI, and gave samples for the metabolomics part of the study. Just about every “tissue” possible, from blood, to urine, to cheek swabs to cerebral spinal fluid was gathered.

Seahorse-Vastag-chronic-fatigue

Rebekah Feng is studying the mitochondria in ME/CFS

Some results may already be showing up.  The Seahorse study results from just three patients were unusual enough that the intramural mitochondrial expert came down to Brian’s room and chatted with him.

Part II of the study will require a week’s stay and include an exercise test on a stationary bicycle, sleeping in a metabolic chamber, cognitive testing, and more blood and other tests.

The study’s only down-side appears to be its size and the time it is taking. Vastag reported that Nath expressed regret that the study was taking so long and told him that he was trying to speed things up. A couple of months ago, Vastag said he was the fourth patient to go through the study. At the NIH Telebriefing Nath said ten people have now gone through the first part of the study and one will start the second part at the end of July. Since the second part of the study was originally slated to begin in fall, it appears that Nath may indeed have speed things up.

Some researchers and doctors have expressed concern about the study’s forty-patient size, but Nath is convinced he can peel off any subsets with the patient group he has to work with.

 

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Hear More on Tuesday about NIH study during CDC’s Grand Rounds

NIH jpegOn Tuesday, February 16, at 1:00 East, Dr. Avindra Nath, the Principal Investigator of NIH Clinical Center’s study of post-infectious ME/CFS, will make a presentation about the first intramural study of our disease in 20 years. This is a well-timed opportunity for patients to hear Dr. Nath describe the study in some detail. (Webcast link is on this page, right hand side: http://www.cdc.gov/cdcgrandrounds/ )

The study at the NIH Clinical Center is designed around a subset of patients with post-infectious onset, similar to recent studies led by Drs. Ian Lipkin and Mady Hornig at Columbia University, studies Simmaron knows well as a collaborator. It is part of a renewed commitment to research ME/CFS announced by NIH Director Dr. Francis Collins in October, when he talked about an intramural study on patients who became ill following an infection.

We encourage patients to watch the webcast of the CDPublic Health Grand Rounds_180x150C Grand Rounds to hear directly from Dr. Nath. He is an infectious neurologist, with experience ranging from AIDS and HIV to studying many infectious agents in collaboration with Dr. Lipkin’s Center for Infection and Immunity.

The CDC Grand Rounds presentation is made to a broad audience of doctors and practitioners throughout the medical community. This event is focused on ME/CFS (for the first time) to educate medical professionals about the new IOM diagnostic criteria, have them hear from expert clinician Dr. Charles Lapp, and describe the NIH’s intramural study. Organized by CDC’s Dr. Elizabeth Unger, we also look forward to hearing data describing the physical severity of the disease from the CDC’s multi-site clinical study, in which Simmaron and other expert clinics are participating.

Last weekend, a draft protocol for the NIH intramural study was posted which did not completely describe the selection criteria. While it was clear about enrolling patients that developed the disease following an acute infection, it mentioned use of Reeves criteria, which raised concerns among patients.

Dr. Avi Nath

Dr. Avindra Nath, NINDS Senior Investigator

A couple days later, Dr. Nath and NINDS Director Dr. Walter Koroshetz provided important clarifying information to Bob Miller and me, especially noting that enrollees will need to meet the Canadian Consensus Criteria and have Post Exertional Malaise. They said additional information will be posted on a website for patients and the community in the coming week. We wanted to reiterate them here for patients who are able to watch the webcast.

We asked questions about the criteria for enrollment, reference to Reeves criteria in the draft protocol, role of ME/CFS experts and the choice of control groups. According to the principal investigator of the study, Dr. Nath:

  • Enrollees will meet all definitions for ME/CFS, including Canadian Consensus Criteria, IOM, Fukuda and Reeves, in addition to post-infectious onset.
  • Post-exertional malaise (PEM) is a criteria, and will be specifically studied with extensive testing before and after exercise challenge.
  • Dr. Ian Lipkin of Columbia University’s Center for Infection and Immunity has been advising the investigators on the study design and protocol.
  • Expert clinicians will be used in patient selection, including those participating in recent multi-site studies of ME/CFS. This information was also learned separately by MEAction.
  • Control groups: Asymptomatic Lyme was chosen to contrast post-infectious ME/CFS patients to patients who recovered from an infection. Functional Movement Disorder was chosen to contrast post-infectious ME/CFS patients with a very well-studied group of patients with clear psychological illness with neurological presentation.
  • They seek to have 40 PI-ME/CFS patients, and they will study them longitudinally, hoping to learn how and whether the disease changes over time.
  • Testing will be extensive.

Personally, Bob and I are very excited to know that the NIH intramural study is moving forward, and that it will deeply study patients with infectious onset against a battery of biological tests. We are reassured by these details, and eager to have this kind of data to move our disease toward discovery.

The webcast is at 1:00 Eastern Time, Tuesday February 16, and the link to view the webcast is here: http://www.cdc.gov/cdcgrandrounds/