Q&A on Epidiolex trial with Dr. Roberta Cilio

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On Wednesday, May 14, advocates for the use of CBD oil in children with severe epilepsy will be gathering in Springfield to urge lawmakers to pass Illinois SB2636, the bill that adds epilepsy as a condition for medical marijuana use. It has already been passed by the Illinois Senate and a House subcommittee. The groundswell of support for SB2636 and similar legislation throughout the country is making headlines every day it seems. Momentum is rolling forward.

Meanwhile, a multicenter clinical trial of a cannabis-derived drug is underway in two medical centers in the US (University of California at San Francisco and New York University) with more centers slated to follow soon. Research clinicians are eager to put some hard science behind the anecdotal testimonies of the benefits of CBD oil for children with epilepsy. But in order for their results to meet the rigorous standards of peer review, researchers are studying Epidiolex, a pharmacological formulation of pure cannabidiol produced by GW Pharmaceuticals.

Dr. Maria Roberta Cilio, MD, PhD, is heading up the study that started in January at the Benioff Children’s Hospital at UCSF. Twenty-five children are enrolled in the trial there. The KCNQ2 community is obviously interested in what these studies will reveal about this emerging treatment option. Dr. Cilio was gracious enough to answer a few questions for us by email.

JA: What are your criteria for enrolling patients?
Dr. Cilio: Patients 1 year to 18 years of age, with intractable seizures resistant to gold standard anti-epileptic drugs.* The patients must have been diagnosed with a well-defined epilepsy type and seizure type(s). Epidiolex will be administered in addition to the patients’ current drug regimen.

JA: How is Epidiolex different from “CBD oil?”
Dr. Cilio: Epidiolex is pure cannabidiol (containing no psychotropic THC). It is a schedule 1, non-FDA approved drug with “orphan drug” status that we are currently trying in order to evaluate effects and side effects. Despite the media and parents’ reports about different preparations of CBD oil, there are no accurate data about short- medium- and long-term effects of these preparations. We are trying to gather data about Epidiolex that is a pharmaceutical compound containing pure CBD. For this reason, in order to clearly understand the effects of Epidiolex, patients should not be on any other cannabis-derived preparations. If a trial with Epidiolex is considered, the patient should be off any cannabis-derived product for at least two months. (Italics mine)

JA: What outcomes are you measuring: seizure control only or other effects too? I ask because parents of kids with KCNQ2-related epilepsy are obviously interested in the anecdotes about CBD oil helping kids make gains in cognitive development as well as seizure control.
Dr. Cilio: At this point we are measuring safety, tolerability, and efficacy in regards to seizure control. In regards to the anecdotal reports about children with Dravet using CBD oil and showing improvement in cognition, this needs to be confirmed with neuropsychological studies done prior to and after treatment. When a child with treatment-resistant seizures becomes seizure-free or experiences a marked decrease in seizure frequency with any medication, the first hypothesis that comes to my mind is that the gain in cognitive development is due to the seizure freedom or seizure reduction. I would call for caution at this point in stating that CBD improves cognitive function. I believe that accurate data are first needed regarding safety, tolerability, and efficacy before any conclusion is made. The great excitement in the media as well as among parents about this drug and other cannabis-derived compounds must be taken into account when outcomes from uncontrolled studies are evaluated. Randomized placebo-controlled trials of Epidiolex or other cannabis-derived compounds will help in overcoming potential biases and provide the most valuable information regarding seizure control and cognitive function improvement.

* In regards to her experience with patients with KCNQ2-related epilepsy, Dr. Cilio also notes: “In my experience, most children with KCNQ2 mutations have a low seizure frequency after the first years of life, or are seizure free. In my experience they respond well to carbamazepine. I believe that the potassium-channel opener Retigabine/Exogabine has a potential in treating KCNQ2-related epilepsy, since this drug can target the molecular disorder.”

One final note: although Dr. Cilio’s full roster of patients in this study does not include any children with KCNQ2-related epilepsy, she does not exclude the possibility that at other centers KCNQ2 kids might be enrolled if they meet the criteria. We look forward to that day, and we will be keeping you posted!

 

 

 

KCNQ2 Report from Houston: The Cooper Lab

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In the Cooper Lab (L-R, front row) Mike and Liz Pribaz, Sara James Butcher, Scotty Sims, Gina Vozenilek; (back row) Brian Baird, Jim Johnson, Eric Pierce

Narrowly dodging a late season snowstorm, members of Jack’s Army convened in sunny Houston at the Baylor College of Medicine on Thursday, March 13. The Chicago contingent (Mike and Liz Pribaz, Brian Baird, Eric Pierce, Laura Javech, and me, Mike’s sister Gina) was joined by friends Jim Johnson and Scotty Sims and their daughter Harper from Denver and Sara James Butcher from Australia by way of New York. We came for a series of presentations, conversations, and tours at Dr. Ed Cooper’s Molecular Neuropharmacology Lab, or the Cooper Lab, the hub of KCNQ2-related epilepsy research.

 

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Harper and the friendly sound guy

The gathering was billed as a “retreat day,” which sounded somewhat relaxing to us Chicagoans, who had checked into our hotel the night before at 3 AM (note to readers: if visiting Houston in March during the rodeo http://www.rodeohouston.com/, be sure to book your rooms well in advance!). Energized by curiosity and coffee, we arrived at the laboratory to meet the others in a conference room. William and Destin Sims, Scotty’s brother and sister-in-law, were there too. It was great to meet them! They made the trip to help entertain Harper, who wasted no time in entertaining all of us. She was perfectly comfortable with all the commotion, charming everyone.

 

 

 

OLYMPUS DIGITAL CAMERABreaking News!

After introductions we prepared to dive into a tidy agenda prepared by Dr. Cooper. But sometimes things don’t go exactly according to plan, and sometimes that’s a good thing. In this case, it was a great thing. Our orderly schedule of events went out the window as a camera crew from the NBC affiliate in Houston arrived to film the parents and researchers. You can watch the segment that aired on the Houston 4:00 news that afternoon here. Our thanks to the production crew from Click2Houston News for doing such a fantastic job and helping us get the word out about our important little corner of epilepsy research.

OLYMPUS DIGITAL CAMERAWhile the Houston news crew was interviewing the parents in the lab, Liz’s phone rang. It was NBC5’s Nesita Kwan in Chicago, calling to arrange a time to film a similar story back home. Click here to watch Nesita’s excellent story on Jack’s KCNQ2-related epilepsy that aired the next day on NBC5 Chicago.

 

 

Meet the Researchers

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The Cooper Lab Dream Team (L-R): Mingxuan Xu, Nishtha Joshi, Li Li, Zhigang Ji, Ed Cooper, Baouyen Tran, and Angel Lopez (not pictured)

At lunch we had an opportunity to get to know the scientists who work in the Cooper lab. It was wonderful to have the opportunity to break bread and share ideas with such a busy and talented group of scientists. They connected with us over sandwiches and conversation about the next steps we can take together.

 

Two strategies in particular emerged from these discussions, which will be detailed soon. They involve a collective patient database and the development of a professional conference for researchers worldwide who are studying the KCNQ2 gene. In all instances, bringing people and ideas together is paying off for Jack’s Army.

OLYMPUS DIGITAL CAMERAThen it was back to the conference room to learn from each of the scientists about their current projects and findings. Lab scientists do not often present their complicated work to a lay audience like us, but it was clear that they worked hard to create understandable graphics and explanations (and nice animations!). And our blown up schedule from earlier in the day meant that they stayed well into the evening to patiently answer all of our questions. We hope to be able to share some of their educational pieces here on the website in the coming weeks.

The Cooper Lab team are so obviously invested in advancing the science and bettering the lives of children affected by this genetic epilepsy. We returned home from Houston profoundly moved by the Cooper Lab team’s dedication and are excited by their steady progress. We couldn’t agree more with a note we received from Zhigang: “Let’s fight the disease together.”

Snapshots from the Trip

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Zhigang Yi shares his findings and outlines his next steps

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(L-R) Baouyen, Angel, Nishtha, and Migxuan are eager to present their work
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Brian can feel his brain growing while listening to Dr. Cooper

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Laura, Scotty, and Liz notice familiar mutation numbers on a diagram. This stuff is starting to make some sense!

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Our tour included a peek at some cells with the KCNQ2 defect.

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Sara, Mike, and Liz stop for a picture

 

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We enjoyed the fresh air and walk to lunch on the Baylor Medical campus

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Impressive waterfall feature!

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Touring the lab

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Harper and Dr. Cooper. This is what it’s all about: helping the kids

CURE awards new epilepsy research grants

CURE awards new epilepsy research grants

In case you didn’t know it, Citizens United for Research in Epilepsy (CURE) is the nation’s largest independent, private funding agency for epilepsy research. Since CURE began in 1998, they have supported 151 projects with more than 26 million dollars. On February 13, 2014, CURE awarded six new research grants in their drive to accelerate epilepsy science and find a cure. And they report a surge in applications this year—a record 200 competitive proposals.

I find it heartening to imagine so many great minds in so many laboratories hard at work. The answer is out there somewhere. This is a good moment to reflect on what it means for Jack’s Army that just last year that our own Dr. Edward Cooper claimed a CURE prize, the “Rock the Block for Pediatric Epilepsy Research Award.”

Let’s consider some numbers.

If you click on the Cure Epilepsy web page, you see a little icon of stick figures. Below the image it says starkly “1 in 26,”  a reminder of how many Americans will develop epilepsy at some point in their lifetime. One in 26. That’s a lot of people. It’s an urgent problem.

stckexch1standoutI don’t know if more than 26 cases of KCNQ2 encephalopathy are known yet, and that’s a global count. Understandably, some might wonder why, among all the deserving research proposals that CURE could choose to fund, they would select Dr. Cooper’s, which targets such a rare form of epilepsy. But Dr. Cooper’s success in vying for coveted grant funds (which went largely into building mouse models that carry three different versions of KCNQ2 mutations) means he made a strong case for the translatability of his research.

Dr. Cooper’s research is that promising—not just for the rare group of children like Jack, but for the basic understanding it offers about the essential role potassium channels play in the function of neurons. And that knowledge potentially helps a lot more of those 1-in-26 Americans.

Read more about Dr. Cooper’s ongoing work in The Cooper Laboratory at the Baylor College of Medicine here.