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Epidiolex-GW

GW Pharma’s Enormous Price for Epidiolex

By Marguerite Arnold
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Epidiolex-GW

In a fascinating early August conference call with Seeking Alpha, British-based GW Pharmaceuticals finally revealed their retail price point for CBD-based drug, Epidiolex, as it goes into distribution in the U.S.

The drug is designed for the treatment of certain kinds of childhood epilepsy – although not all kinds. Also notable of course, is that GW Pharma’s “other” drug for treatment of resistant epilepsy failed in late stage trials in Eastern Europe earlier this year. It also knocked off 5% of the price of the company’s stock.The company is estimating it has a potential patient pool of between 25,000- 30,000 patients in the U.S.

British Advocacy Over Access And Pricing

The ineffectiveness of GW Pharma’s drugs for many patients (along with the cost charged for them) was responsible for pre-empting the entire access discussion in the UK this year. The mother of an epileptic British child tried to import a personal store of cannabis oil (produced by Canadian LP Tilray) only to have it confiscated at the airport this summer. Her son ended up in the hospital shortly thereafter.

The national uproar this caused pushed forward the country’s new medical cannabis policy– indeed drug rescheduling is due to go into effect in October. Conveniently, right as Epidiolex goes on sale in the U.S. (where cannabis remains a Schedule I drug).

The company is estimating it has a potential patient pool of between 25,000- 30,000 patients in the U.S.

Price Tags and Politics

What is the price of Epidiolex? $32,500 per patient, per year. If that sounds high, the company insists it is pricing the drug to be “in line” with other drugs for this segment of the market.

The majority of this cost will not be picked up by private health insurers but rather the federal governmentActually, according to industry analysis, this is about 70% more than the price of one comparable drug (Onfi), and slightly more expensive than Banzel, the two competing (non-cannabinoid based) medications now available in the U.S. for this market.

Here is the other (widely unreported) kicker. The majority of this cost will not be picked up by private health insurers but rather the federal government, which is also not negotiating with GW Pharma about that high price  (unlike for example what is going on in Europe and the German bid).

Why the difference?

Two reasons. The first is that Epidiolex has obtained “orphan drug” status (a medication for a disease that affects fewer than 200,000 patients in the U.S.) The second is that the majority of the insurance that will be picking up this tab is Medicaid. The patient pool will be unable to afford this. As a result, the bulk of the money will remit not from private insurance companies but rather federal taxpayers. And, unlike in say, Germany, none of this is pre-negotiated in bulk.

Epidiolex-GW
What is the price of Epidiolex? $32,500 per patient, per year.

Co-payments are expected to range from $5 to $200 per month per patient after insurance (read: the government) picks up the tab. This essentially means that the company plans to base participation at first at least on a sliding scale, highly subsidized by a government that has yet to reschedule cannabis from a Schedule I in the U.S.

Creating, in other words, a new monopoly position for GW Pharmaceuticals in North America.

A Hypocrisy Both Patients And The Industry Should Fight

The sordid, underhanded politicking that has created this canna monster is hardly surprising given the current political environment in both the U.S. and the U.K. right now. The people who benefit the most from this development are not patients, or even everyday shareholders, not to mention the burgeoning legitimate North American cannabis industry, but in fact highly placed politicians (like British Prime Minister Theresa May). Philip May, the PM’s husband’s firm is the majority shareholder in GW Pharma. Her former drugs minister (with a strong stand against medical cannabis) is married to the managing director of British Sugar, the company that grows GW Pharma’s cannabis stock domestically.

So far, despite a domestic outcry over this in the UK (including rescheduling), there has been no political backlash in the United States over this announcement. Why not?

Look To Europe For A More Competitive Medical Market

This kind of pricing strategy is also a complete no go in just about every other market – including medical-only markets where GW Pharma already has a footprint.

For example, German health insurers are already complaining about this kind of pricing strategy for cannabis (see the Cannabis Report from one of the country’s largest insurers TK – out earlier this year). And this in an environment where the government, in fact, does negotiate a bulk rate for most of the drugs in the market. Currently most German cannabis patients are being given dronabinol, a synthetic form of THC which costs far less.

GW logo-2On top of this, there are also moves afoot by the German government to begin to bring the costs of medical cannabis and medicines down, dramatically. And this too will impact the market – not only in Europe, but hopefully spark a debate in every country where prices are also too high.

The currently pending German cultivation bid for medical cannabis has already set an informal “reference” price of at most 7 euros a gram (and probably will see bid competitors come in at under half that). In other words, the government wholesale price of raw, unprocessed cannabis flower if not lightly processed cannabis oil is expected to be somewhere in the neighbourhood of 3-4 euros per gram come early next year. If not, as some expect, potentially even lower than that.

Processed Cannabis Medicine vs. Whole Plant Treatment

The debate that is really raging, beyond pricing, is whether unprocessed cannabis and cannabis oil is actually “medicine.” At the moment, the status quo in the U.S. is that it is not.

GW Pharmaceuticals, in other words, a British company importing a CBD-based derivative, is the only real “medical cannabis” company in the country, per the FDA. Everyone else, at least according to this logic, is placed in the “recreational camp.” And further, hampered still, with a lack of rescheduling, that affects everyone.

If that is not an organizing issue for the American cannabis industry, still struggling with the many issues inherent in the status quo (from insurance coverage and banking to national distribution across state lines) leading up to the midterms, nothing will be.

Lauren Pahnke
From The Lab

Centrifugal Partition Chromatography Paves the Way for Safer, More Standardized Cannabidiol Drugs

By Lauren Pahnke
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Lauren Pahnke

Imagine this: you are taking medication for cancer pain. One day, it works perfectly. The next, you feel no relief. On some days, you need to take three doses just to get the same effect as one. Your doctor can’t be completely positive how much active ingredient each dose contains, so you decide for yourself how much medication to take.

Doesn’t seem safe, right? It is crucial that doctors know exactly what they are prescribing to their patients. They must know that their patients are receiving the exact same dose of medication in their prescription each time they take it, and that their medication contains only the intended ingredients.

consistency is key to creating products that are safe for consumers.In the cannabis industry, lack of certainty on these important factors is a major problem for drug manufacturers as they attempt to incorporate cannabidiol (CBD), a compound found in cannabis that has no psychoactive effects but many medical benefits, into pharmaceutical drugs.

When using these compounds as medications, purity is essential. Cannabis contains a wide variety of compounds. Delta-9 tetrahydrocannabinol (THC) is the most well-known compound and its main psychoactive one1. Safety regulations dictate that consumers know exactly what they are getting when they take a medication. For example, their CBD-based medications should not contain traces of THC.

The cannabis industry greatly needs a tool to ensure the consistent extraction and isolation of compounds. In 2017, the cannabis industry was worth nearly $10 billion, and it is expected to grow $57 billion more in the next decade2. As legalization of medical cannabis expands, interest in CBD pharmaceuticals is likely to grow.

If compounds such as CBD are going to be used in pharmaceutical drugs, consistency is key to creating products that are safe for consumers.

CBD’s Potential

CBD is a non-psychoactive compound that makes up 40 percent of cannabis extracts1. It is great for medical applications because it does not interfere with motor or psychological function. Researchers have found it particularly effective for managing cancer pain, spasticity in multiple sclerosis, and specific forms of epilepsy3.

Figure 1: The chemical structure of cannabidiol.
Figure 1: The chemical structure of cannabidiol.

Other compounds derived from cannabis, such as cannabichromene (CBC) and cannabigerol (CBG), may also be beneficial compounds with medical applications. CBC is known to block pain and inflammation, and CBG is known for its use as a potential anti-cancer agent1.

Along with these compounds that provide medical benefits, there are psychoactive compounds that are used recreationally, such as THC.

“It will definitely be an advantage to have cannabis-based medications with clearly defined and constant contents of cannabinoids,” says Kirsten Müller-Vahl, a neurologist and psychiatrist at Hannover Medical School in Germany.

Creating a Standard Through Centrifugal Partition Chromatography

To obtain purified compounds from cannabis, researchers need to use technology that will extract the compounds from the plant.

Many manufacturers use some sort of chromatography technique to isolate compounds. Two popular methods are high performance liquid chromatography (HPLC) and flash chromatography. These methods have their places in the field, but they cannot be effectively and cost-efficiently scaled to isolate compounds. Instead, HPLC and flash chromatography may be better suited as analytical tools for studying the characteristics of the plant or extract. As cannabis has more than 400 chemical entities4, compound isolation is an important application.

This method is highly effective for achieving both high purity and recovery.Although molecules such as CBD can be synthesized in the lab, many companies would rather extract the compounds directly from the plant. Synthesized molecules do not result in a completely pure compound. The result, “is still a mixture of whatever cannabinoids are coming from a particular marijuana strain, which is highly variable,” says Brian Reid, chief scientific officer of ebbu, a company in Colorado that specializes in cannabis purification.

Currently, there is only one method available to researchers that completely allows them to isolate individual compounds: centrifugal partition chromatography (CPC).

The principle of CPC is similar to other liquid chromatography methods. It separates the chemical substances as the compounds in the mobile phase flow through and differentially interact with the stationary phase.

Where CPC and standard liquid chromatography differs is the nature of the stationary phase. In traditional chromatography methods, the stationary phase is made of silica or other solid particles, and the mobile phase is made of liquid. During CPC, the stationary phase is a liquid that is spun around or centrifuged to stay in place while the other liquid (mobile phase) moves through the disc. The two liquid phases, like oil and water, don’t mix. This method is highly effective for achieving both high purity and recovery. Chemists can isolate chemical components at 99 percent or higher purity with a 95 percent recovery rate5.

“CPC is ideal for ripping a single active ingredient out of a pretty complex mixture,” says Reid. “It’s the only chromatographic technique that does that well.”

The Need for Pure Compounds

High levels of purity and isolation are necessary for cannabis to be of true value in the pharmaceutical industry. Imagine relying on a medication to decrease your seizures, and it has a different effect every time. Sometimes there may be traces of psychoactive compounds. Sometimes there are too much or too little of the compound that halts your seizures. This is not a safe practice for consumers who rely on medications.“It’s hard to do studies on things you can’t control very well.”

Researchers working with cannabis desperately need a technology that can extract compounds with high purity rates. It is hard to run a study without knowing the precise amounts of compounds used. Reid uses a Gilson CPC 1000 system at ebbu for his cannabinoid research. With this technology, he can purify cannabinoids for his research and create reliable formulations. “Now that we have this methodology dialed in we can make various formulations —whether they’re water-soluble, sublingual, inhaled, you name it —with very precise ratios of cannabinoids and precise amounts of cannabinoids at the milligram level,” says Reid.

Kyle Geary, an internist at the University of Illinois at Chicago, is currently running a placebo-controlled trial of CBD capsules for Crohn’s disease. This consistent isolation is helpful for his research, as well. “Ideally, the perfect study would use something that is 100 percent CBD,” says Geary. “It’s hard to do studies on things you can’t control very well.”

The State of the Industry

While CBD is not considered a safe drug compound under federal law in the United States6, 17 states have recently passed laws that allow people to consume CBD for medical reasons7. Half of medicinal CBD users solely use the substance for treatment, a recent survey found8. As the industry quickly grows, it is crucial that consumer safety protocol keeps pace.

In June, the US Food and Drug Administration (FDA) approved the first drug that contains a purified drug substance from cannabis, Epidiolex9. Made from CBD, it is designed to treat Dravet Syndrome and Lennox-Gastaut syndrome, two rare forms of epilepsy. FDA Commissioner Scott Gottlieb said in the news release that although the FDA will work to support the development of high-quality cannabis-based products moving forward, “We are prepared to take action when we see the illegal marketing of CBD-containing products with serious, unproven medical claims. Marketing unapproved products, with uncertain dosages and formulations can keep patients from accessing appropriate, recognized therapies to treat serious and even fatal diseases.”

The industry should be prepared to implement protocols to ensure the quality of their CBD-based products. The FDA has issued warnings in recent years that some cannabinoid products it has tested do not contain the CBD levels their makers claim, and consumers should be wary of such products10. It’s hard to know when or if the FDA will begin regulating CBD-based pharmaceuticals. However, for pharma companies serious about their reputation, there is only one isolation method that creates reliable product quality: CPC.


References:

  1. Lab Manager. (2018, January 3). Cannabinoid Chemistry Infographic. Retrieved from http://www.labmanager.com/multimedia/2017/07/cannabinoid-chemistry-infographic#.WzT2e1MvyMI
  2. BDS Analytics. (2018, February 26). NEW REPORT: Worldwide spending on legal cannabis will reach $57 billion by 2027. Retrieved from https://bdsanalytics.com/press/new-report-worldwide-spending-on-legal-cannabis-will-reach-57-billion-by-2027/
  3. National Institute on Drug Abuse. (2015, June 24). The Biology and Potential Therapeutic Effects of Cannabidiol. Retrieved from https://www.drugabuse.gov/about-nida/legislative-activities/testimony-to-congress/2016/biology-potential-therapeutic-effects-cannabidiol
  4. Atakan, Z. (2012). Cannabis, a complex plant: Different compounds and different effects on individuals. Therapeutic Advances in Psychopharmacology,2(6), 241-254. doi:10.1177/2045125312457586
  5. Gilson. (n.d.). Centrifugal Partition Chromatography (CPC) Systems. Retrieved from http://www.gilson.com/en/AI/Products/80.320#.WzVB2lMvyMI
  6. Mead, A. (2017). The legal status of cannabis (marijuana) and cannabidiol (CBD) under US law. Epilepsy & Behavior, 70, 288-291.
  7. ProCon.org. (2018, May 8). 17 States with Laws Specifically about Legal Cannabidiol (CBD) – Medical Marijuana – ProCon.org. Retrieved from https://medicalmarijuana.procon.org/view.resource.php?resourceID=006473
  8. Borchardt, D. (2017, August 03). Survey: Nearly Half Of People Who Use Cannabidiol Products Stop Taking Traditional Medicines. Retrieved from https://www.forbes.com/sites/debraborchardt/2017/08/02/people-who-use-cannabis-cbd-products-stop-taking-traditional-medicines/#43889c942817
  9. U.S. Food & Drug Administration. (2018, June 25). Press Announcements – FDA approves first drug comprised of an active ingredient derived from marijuana to treat rare, severe forms of epilepsy. Retrieved from https://www.fda.gov/NewsEvents/Newsroom/PressAnnouncements/ucm611046.htm
  10. U.S. Food & Drug Administration. (2017). Public Health Focus – Warning Letters and Test Results for Cannabidiol-Related Products. Retrieved from https://www.fda.gov/newsevents/publichealthfocus/ucm484109.htm