Promising Pre-Clinical and Phase 1 Data Support Advance of Selective Cortisol Modulator CORT125134 as Potential Treatment for Cushing’s Syndrome and Solid-Tumor Cancers

MENLO PARK, CA–(Marketwired – Apr 28, 2016) –  Corcept Therapeutics Incorporated (NASDAQ: CORT), a pharmaceutical company engaged in the discovery, development and commercialization of drugs that treat severe metabolic, oncologic and psychiatric disorders by modulating the effects of cortisol, today released data supporting the clinical advancement of its proprietary, selective cortisol modulator, CORT125134. The company has begun recruiting patients for a Phase 1/2 trial of the compound to treat patients with solid-tumor cancers. It also expects to begin recruiting patients for a Phase 2 study of CORT125134 to treat patients with Cushing’s syndrome this quarter.

“Advancing CORT125134 is an important step in protecting and extending our growing Cushing’s syndrome franchise and in developing cortisol modulation for a wide range of other serious diseases,” said Joseph K. Belanoff, MD, Corcept’s Chief Executive Officer. “This selective cortisol modulator has shown great promise. We are optimistic that, for some patients with Cushing’s syndrome, CORT125134 may be even better than our approved product, Korlym® — just as effective, but without the side effects associated with Korlym’s affinity for the progesterone receptor. Equally important, we look forward to investigating its potential as a treatment for solid-tumor cancers.”

CORT125134 is the lead compound in Corcept’s proprietary portfolio of selective cortisol modulators. It is a non-steroidal competitive antagonist of the glucocorticoid receptor (GR) that does not bind to the body’s other hormone receptors, including the progesterone receptor (PR). Korlym’s interaction with PR results in termination of pregnancy and can cause endometrial thickening and irregular vaginal bleeding in some women. CORT125134 is proprietary to Corcept and is protected by composition of matter and method of use patents extending to 2033.

Advancement to Phase 2 Trials Supported by Positive Pre-Clinical and Phase 1 Data
“The data generated so far make this compound a promising candidate to treat both Cushing’s syndrome and, potentially, a number of solid-tumor cancers,” said Hazel Hunt, Ph.D., Corcept’s Vice President of Research. “Its Phase 1 data showed that it shares Korlym’s potent affinity for GR, one of the receptors to which cortisol binds. Our clinical testing showed that it can prevent the effects of the steroid prednisone, a commonly-used synthetic GR agonist. Preventing the effects of prednisone is a very important finding, as it mirrors the essential quality of an effective medical treatment for patients with Cushing’s syndrome.”

Corcept’s Phase 1 trial of CORT125134 enrolled 124 healthy volunteers. GR antagonism was tested by measuring CORT125134’s ability to modulate prednisone’s effects on serum osteocalcin, white blood cell counts, glucose metabolism and expression of the FKBP5 gene — a marker of GR activation. With respect to all parameters, CORT125134 was as potent a modulator of prednisone’s activity as Korlym (see Figure 1; p value < 0.0003).

Pharmacokinetic data indicate that CORT125134 is suitable for once-daily dosing.

“Positive Phase 1 data, together with encouraging pre-clinical results, prompted us to advance CORT125134 as a treatment for Cushing’s syndrome as well as a treatment for cancer,” continued Dr. Hunt. “Substantial pre-clinical and clinical research suggests that cortisol modulation increases the effectiveness of chemotherapy in some solid-tumor cancers. Pre-clinical data suggest that CORT125134 may be even more potent than Korlym in treating some tumor types.”

Corcept and investigators at the University of Chicago have studied the effectiveness of CORT125134 in transgenic mouse models of triple-negative breast cancer (TNBC) and castration-resistant prostate cancer. Mice implanted with TNBC tumor cells were treated with a combination of paclitaxel and CORT125134. Mifepristone (the active ingredient in Korlym) in combination with paclitaxel served as a positive control. As expected, the combination of mifepristone and paclitaxel significantly slowed tumor progression. However, the combination of CORT125134 and paclitaxel slowed it even more (see Figure 2; p value = 0.0004). In a similar experiment, castrated mice seeded with prostate cancer tumor cells were treated with either mifepristone or CORT125134. The outcome was comparable to the TNBC study: When combined with castration (which in humans would be achieved pharmacologically by the administration of an androgen receptor antagonist such as enzalutamide), mifepristone retarded tumor progression, but CORT125134 had an even more pronounced effect (see Figure 3; p value = 0.037).

CORT125134 may also enhance the efficacy of immune-modulation therapy. In an animal model of colon cancer, the addition of CORT125134 to PD-1 monotherapy significantly slowed tumor progression (see Figure 4; p value = 0.013):

Oncology Trial Design
This trial’s initial phase will investigate nab-paclitaxel in combination with CORT125134 to treat any solid-tumor cancer susceptible to treatment with nab-paclitaxel. (“Nab-paclitaxel” is the generic name for Celgene’s drug, Abraxane®.) Once a maximum tolerated dose is identified, Corcept plans to open one or more expansion cohorts, each containing 20 patients, to test the combination’s efficacy in one or more of the solid-tumor cancers studied in the dose-finding phase. Possible target indications include TNBC, castration-resistant prostate cancer, ovarian cancer, pancreatic cancer and sarcoma. Other dose-finding cohorts may be enrolled to study CORT125134 in combination with different companion therapeutic agents, including PD-1 inhibitors.

The trial is open-label and will be conducted at sites in the United States, the first of which is open and has begun screening patients.

“That we are advancing the same selective cortisol modulator as a treatment for both a metabolic disease and one or more oncologic indications is a testament to the broad therapeutic potential of cortisol modulation,” said Robert S. Fishman, MD, Corcept’s Chief Medical Officer. “We are excited to start these trials.”

Cushing’s Syndrome Trial Design
This Phase 2 trial of CORT125134 will enroll 30 patients with endogenous Cushing’s syndrome. Patients will be assigned to a low- or high-dose group and will receive CORT125134 for 12 weeks, with up-titration possible in each group at weeks four and eight. The trial will be open label. Study centers will be located in both the European Union and the United States.

About Korlym®
Korlym modulates the effect of cortisol at GR, one of the two receptors to which cortisol binds, thereby inhibiting the effects of excess cortisol in patients with Cushing’s syndrome. Since 2012, Corcept has made Korlym available as a once-daily oral treatment of hyperglycemia secondary to endogenous Cushing’s syndrome in adult patients with glucose intolerance or diabetes mellitus type 2 who have failed surgery or are not candidates for surgery. Korlym was the first FDA-approved treatment for that illness and the FDA has designated it as an Orphan Drug for that indication.

About Cushing’s Syndrome
Endogenous Cushing’s syndrome is caused by prolonged exposure of the body’s tissues to high levels of the hormone cortisol and is generated by tumors that produce cortisol or ACTH. Cushing’s syndrome is an orphan indication that most commonly affects adults aged 20-50. An estimated 10-15 of every one million people are newly diagnosed with this syndrome each year, resulting in over 3,000 new patients annually in the United States. An estimated 20,000 patients in the United States have Cushing’s syndrome. Symptoms vary, but most people have one or more of the following manifestations: high blood sugar, diabetes, high blood pressure, upper body obesity, rounded face, increased fat around the neck, thinning arms and legs, severe fatigue and weak muscles. Irritability, anxiety, cognitive disturbances and depression are also common. Cushing’s syndrome can affect every organ system in the body and can be lethal if not treated effectively.

About Triple-Negative Breast Cancer
Triple-negative breast cancer is a form of the disease in which the three receptors that fuel most breast cancer growth — estrogen, progesterone and the HER-2/neu gene — are not present. Because the tumor cells lack the necessary receptors, treatments that target estrogen, progesterone and HER-2 receptors are ineffective. In 2013, approximately 40,000 women were diagnosed with TNBC. It is estimated that more than 75 percent of these women’s tumor cells expressed the GR receptor to which cortisol binds. There is no FDA-approved treatment and neither a targeted treatment nor an approved standard chemotherapy regimen for relapsed TNBC patients exists.

About Corcept Therapeutics Incorporated
Corcept is a pharmaceutical company engaged in the discovery, development and commercialization of drugs that treat severe metabolic, oncologic and psychiatric disorders by modulating the effects of cortisol. Korlym, a first-generation cortisol modulator, is the company’s first FDA-approved medication. The company is conducting a Phase 1/2 trial of mifepristone for the treatment of TNBC, a Phase 1/2 trial of CORT125134 to treat a variety of solid-tumor cancers and has a proprietary portfolio of other selective GR antagonists that modulate the effects of cortisol but not progesterone. Corcept owns extensive intellectual property covering the use of cortisol modulators, including mifepristone and CORT125134, in the treatment of a wide variety of metabolic, oncologic and psychiatric disorders. It also holds composition of matter patents for CORT125134 and its other selective cortisol modulators.

Forward-Looking Statements
Statements made in this news release, other than statements of historical fact, are forward-looking statements. These forward-looking statements, including statements regarding the initiation and advancement of clinical trials and the development of Corcept’s pre-clinical and clinical pipeline, are subject to known and unknown risks and uncertainties that might cause actual results to differ materially from those expressed or implied by such statements, including the pace of enrollment in or the outcome of the company’s Phase 1/2 study of CORT125134 to treat solid-tumor cancers and planned Phase 2 trial of CORT125134 to treat patients with Cushing’s syndrome, the effects of rapid technological change and competition, the protections afforded by Corcept’s intellectual property rights, or the cost, pace and success of Corcept’s other product development efforts. These and other risks are set forth in the company’s SEC filings, all of which are available from the company’s website (www.corcept.com) or from the SEC’s website (www.sec.gov). Corcept disclaims any intention or duty to update any forward-looking statement made in this news release.

Abraxane® is a registered trademark of Celgene Corporation.

From http://www.marketwired.com/press-release/promising-pre-clinical-phase-1-data-support-advance-selective-cortisol-modulator-cort125134-nasdaq-cort-2119635.htm

 

Ectopic adrenocorticotropic hormone syndrome caused by neuroendocrine tumors of the thymus

Background and purpose: Thymic neuroendocrine carcinomas (TNECs) are extremely uncommon. Certain cases of TNECs can produce the adrenocorticotropic hormone (ACTH) and cause ectopic ACTH syndrome (EAS). The current literature on this topic consists mainly of case reports, and therapeutic guidelines are lacking. The aim of this study was to discuss the diagnosis, surgical management, and prognosis of EAS caused by TNECs to improve clinical experience with this rare disease.

Methods: From June 1984 to June 2014, at the Peking Union Medical College Hospital, the surgical interventions and follow-up outcomes of 16 consecutive patients (eight men and eight women) with EAS caused by TNECs were retrospectively analyzed.

Results: The median age was 32.5 years (range: 13–47 years), and the median disease duration was 8.5 months (range: 1–150 months). All patients presented with clinical and biochemical evidence indicating a diagnosis of Cushing’s syndrome.

Contrast-enhanced thoracic computed tomography scans were critical to locating the ACTH-producing tumor and evaluating the feasibility of resection. All patients underwent surgery. One patient died of septicemia in the intensive care unit 2 weeks after surgery. No other morbidity or mortality occurred during the perioperative period. The median overall survival (OS) was 41 months (95% CI: 30.3–51.7 months), and the progression-free survival was 28 months (95% CI: 21.6–34.3 months). Both overall survival (P=0.002) and progression-free survival (P=0.030) improved significantly after complete resection.

Conclusion: TNEC is an extremely aggressive disease that should be considered when treating patients with Cushing’s syndrome due to ectopic ACTH secretion. In particular, all suspected patients should undergo contrast-enhanced thoracic computed tomography scans to facilitate early diagnosis. The current first-line treatment is surgical resection, and complete resection is a favorable prognostic factor. However, additional patients and a longer follow-up will be needed to determine the variables that are predictive of survival and to improve patient prognosis.

Download this article at https://www.dovepress.com/ectopic-adrenocorticotropic-hormone-syndrome-caused-by-neuroendocrine–peer-reviewed-article-OTT

Day 29, Cushing’s Awareness Challenge 2016

People sometimes ask me how I found out I had Cushing’s Disease.  Theoretically, it was easy.  In practice, it was very difficult.

Ladies Home Journal, 1983In 1983 I came across a little article in the Ladies Home Journal which said “If you have these symptoms…”

I found the row with my symptoms and the answer read “…ask your doctor about Cushing’s”.

After that article, I started reading everything I could on Cushing’s, I bought books that mentioned Cushing’s. I asked and asked my doctors for many years and all of them said that I couldn’t have it.  It was too rare.  I was rejected each time.

Due to all my reading at the library, I was sure I had Cushing’s but no one would believe me. My doctors would say that Cushing’s Disease is too rare, that I was making this up and that I couldn’t have it.

In med school, student doctors are told “When you hear hoofbeats, think horses, not zebras“.

According to Wikipedia: “Zebra is a medical slang term for a surprising diagnosis. Although rare diseases are, in general, surprising when they are encountered, other diseases can be surprising in a particular person and time, and so “zebra” is the broader concept.

The term derives from the aphorism “When you hear hoofbeats behind you, don’t expect to see a zebra”, which was coined in a slightly modified form in the late 1940s by Dr. Theodore Woodward, a former professor at the University of Maryland School of Medicine in Baltimore.  Since horses are the most commonly encountered hoofed animal and zebras are very rare, logically you could confidently guess that the animal making the hoofbeats is probably a horse. By 1960, the aphorism was widely known in medical circles.”

So, doctors typically go for the easily diagnosed, common diseases.  Just because something is rare doesn’t mean that no one gets it.  We shouldn’t be dismissed because we’re too hard to diagnose.

When I was finally diagnosed in 1987, 4 years later, it was only because I started bleeding under the skin. My husband made circles around the outside perimeter each hour with a marker so my leg looked like a cut log with rings.

When I went to my Internist the next day he was shocked at the size of the rings. He now thought I had a blood disorder so he sent me to a Hematologist/Oncologist.

Fortunately, that new doctor ran a twenty-four hour urine test and really looked at me and listened to me.  Both he and his partner recognized that I had Cushing’s but, of course, couldn’t do anything further with me.  They packed me off to an endo where the process started again.

My final diagnosis was in October, 1987.  Quite a long time to simply  “…ask your doctor about Cushing’s”.

Looking back, I can see Cushing’s symptoms much earlier than 1983.  But, that ‘s for a different post.

 

Day 28, Cushing’s Awareness Challenge 2016

Over the years, we went on several Windjammer Barefoot Cruises.  We liked them because they were small, casual and were fairly easy on the wallet.

They sailed around the Caribbean to a variety of islands, although they sometimes changed itineraries depending on weather, crew, whatever.  One trip we were supposed to go to Saba but couldn’t make port.  A lot of people got off at the next port and flew home.

The captains were prone to “Bedtime Stories” which were often more fiction than true but they added to the appeal of the trip.  We didn’t care if we missed islands or not – we were just there to sail over the waves and enjoy the ride.

The last trip we took with them was about two years before I started having Cushing’s problems.  (You wondered how I was going to tie this together, right?)

The cuise was uneventful, other than the usual mishaps like hitting docks, missing islands and so on.  Until it was a particularly rough sea one day.  I was walking somewhere on deck and suddenly a wave came up over the deck making it very slippery.  I fell and cracked the back of my head on the curved edge of a table in the dining area.  I had the next-to-the-worse headache I have ever had, the worst being after my pituitary surgery. At least after the surgery I got some morphine.

We asked several doctors later if that hit could have contributed to my Cushing’s but doctors didn’t want to get involved in that at all.

The Windjammer folks didn’t fare much better, either. In October 1998, Hurricane Mitch was responsible for the loss of the s/v Fantome (the last one we were on).

All 31 crew members aboard perished; passengers and other crew members had earlier been offloaded in Belize.

The story was recorded in the book The Ship and the Storm: Hurricane Mitch and the Loss of the Fantome  by Jim Carrier.  The ship, which was sailing in the center of the hurricane, experienced up to 50-foot (15 m) waves and over 100 mph (160 km/h) winds, causing the Fantome to founder off the coast of Honduras.

This event was similar to the Perfect Storm in that the weather people were more interested in watching the hurricane change directions than they were in people who were dealing with its effects.

I read this book and I was really moved by the plight of those crew members.

I’ll never know if that hit on my head contributed to my Cushing’s but I have seen several people mention on the message boards that they had a traumatic head injury of some type in their earlier lives.

Day 25, Cushing’s Awareness Challenge 2016

bestday

 

I wrote parts of this in 2008, so all the “yesterdays” and “last weeks” are a little off. 

Wow.  That’s about all I can say.  Yesterday was possibly the best day of my life since I started getting Cushing’s symptoms, and that was over 25 years ago.  A quarter of a century of feeling exhausted, fatigued.  A quarter of my life spent taking naps and sleeping.

Last week  in this post I wrote in part:

I went to the endo yesterday.  Nothing has changed for me.  Nothing will.  He wants me to take more cortef.  I don’t want to gain weight again.  He looked up Provigil and it’s not indicated for panhypopituitarism.  So he won’t prescribe it.  My kidney surgeon probably won’t let me take, anyway, but it was worth a try.

He did mention that in “only” 2.5 years maybe I can go back on growth hormone.  I don’t want to live like this another year let alone 2.5.  But then, when I was on GH before it didn’t help me like it helps most everyone else.

I’m tired of catering to a kidney that may or may not fail sometime anyway, tired of being so exhausted all the time.  I feel like I’ve lost nearly half my life to this Cushing’s stuff already.

So, yesterday I was supposed to go to a conference on web design for churches.  My church sent me because they want me to spiff up their site and make them a new one for Christmas.  I wanted to go because, well, I like learning new stuff about the web.  I figured that I would learn stuff that would also be useful to me in others of my sites.

And I did!

But the amazing thing is this.  My son had told me  about a medication that was very similar to Provigil, that he had tried it while he was writing his doctoral thesis and it had helped him.

So, having tried the official doctor route and being rebuffed – again – I had decided to try this stuff on my own.

Just the night before I had written a response on Robin’s wonderful blog that reads in part:

I hate this disease, too.

I was just talking to a friend today about how I’d try nearly anything – even if it ruined my one remaining kidney – to have a few days where I felt good, normal, where I could wake up in the morning rested and be able to have energy for the day.

I want to go out and have fun, to be able to drive for more than 45 minutes without needing to rest, to be have people over for dinner, whatever. I hate being restricted by my lack of energy.

My endo says to cheer up. In two and a half years I can try the growth hormone again. Whoopee. Didn’t work the first time and maybe gave me, or contributed to, cancer growth. Why would I want to look forward to trying that again?

I want to feel good now. Today.

I hate that this disease kills but I also hate that it’s robbed me of half my life already.

I wish doctors would understand that even though we’ve “survived”, there’s no quality of life there.

I hate Cushing’s. It robs so much from so many of us. 😦

As I said earlier, I have a history of daily naps of at least 3 hours a day.  It cuts into everything and prevents me from doing many things.  I have to schedule my life around these naps and it’s awful.

rockford-2006-sue 12-18-2006 2-09-18 pmA few years ago I went on a Cushie trip to Rockford.  I’ve been there a few times and it’s always so much fun.  But this first year, we were going to another Cushie’s home for barbecue.  I didn’t drive, I rested in the back of the car during the drive.  We got there and I managed to stay awake for a little while.  Them I put my head down on the dining room table and fell asleep. Our hostess kindly suggested that I move over to the sofa.

So, I have a long history of daily naps, not getting through the day, yadda, yadda.

So, I was a little nervous about yesterday.  I really wanted to go to this conference, and was afraid I’d have to go nap in my car.

I got up at 5:30 am yesterday.  Before I left at 7:15, I took my Cortef and then I took my non-FDA approved simulated Provigil.  (Although it’s not FDA approved, it is not illegal to possess without a prescription and can be imported privately by citizens)

I stayed awake for the whole conference, went to a bell rehearsal, did Stacey’s interview, had dinner and went to bed about 10:30PM.  NO NAP!  I did close my eyes a little during the 4:00PM session but it was also b-o-r-i-n-g.

I stayed awake, I enjoyed myself, I learned stuff, I participated in conversations (completely unlike shy me!).

I felt like I think normal people feel.  I was amazed.  Half my life wasted and I finally (thank you Michael!) had a good day.

My kidney doctor and my endo would probably be appalled but it’s about time that I had some life again!  Maybe in another 25 years, I’ll take another pill.  LOL


Well, the energy from the Adrafinil was a one day thing.  I felt great on Thursday.   Friday and Saturday I slept more than usual.  Saturday, today, was one of those days where I sleep nearly all day.  Maybe if I took the drug more it would build up in my system, maybe not.  But it was still worth having that one day where I felt what I imagine normal to be.

While I was being a slug today, my husband painted the entire house.

I’m not sure if I would have been this tired today or if I was somehow making up for the nap I didn’t get on Thursday.  Whatever the case, I’m glad that I had the opportunity to try this and to experience the wonderful effects, if only for one day.

Information from a site that sells this:

Alertness Without Stimulation

Adrafinil is the prototype of a new class of smart drug – the eugeroics (ie, “good arousal”) designed to promote vigilance and alertness. Developed by the French pharmaceutical company Lafon Laboratories, adrafinil (brand name, Olmifon) has been approved in many European countries for treating narcolepsy, a condition characterized by excessive daytime sleepiness and other unusual symptoms.

Non-narcoleptic users generally find that adrafinil gives them increased energy and reduces fatigue, while improving cognitive function, mental focus, concentration, and memory. It has been reported that quiet people who take adrafinil become more talkative, reserved people become more open, and passive people become more active.

Of course, many stimulant drugs, ranging from caffeine to methamphetamine, are known to produce similar alerting/energizing effects. Adrafinil has been described by some users as a “kinder, gentler” stimulant, because it provides these benefits but usually with much less of the anxiety, agitation, insomnia, associated with conventional stimulants.

Adrafinil’s effects are more subtle than those of the stimulants you may be used to, building over a period of days to months. They appear to be based on its ability to selectively stimulate 1-adrenergic receptors in the brain.2 These receptors normally respond to norepinephrine (noradrenaline), a neurotransmitter linked to alertness, learning, and memory. This is in contrast to conventional stimulants, which stimulate a broader spectrum of brain receptors, including those involving dopamine. Its more focused activity profile may account for adrafinil’s relative lack of adverse side effects.

There’s more info about Adrafinil on Wikipedia

It’s interesting that that snipped report that people become more talkative.  I reported that in the original post, too, even though I didn’t realize that this was a possibility.

A good quote that I wish I could relate to better:

“Time is limited, so I better wake up every morning fresh and know that I have just one chance to live this particular day right, and to string my days together into a life of action and purpose.”

Lance Armstrong (1971 – )
Cyclist, seven-time Tour de France champion and cancer survivor


2011 stuff starts here:

Awhile ago I went to a handbell festival. I took a bit of adrafinil on the main day to try to stay awake for the whole day. It didn’t seem to keep me as on as it did before. I can’t be used to it already. Maybe I’m just that much more tired than I was before.

Our son lives in New York and every few years he gives us tickets to see a Broadway show.  A couple years ago we took the train to NY to see Wicked.  Usually my DH wants to go out and see sights while we’re there.  I usually want to nap.

This time we got up on Saturday morning, went out for breakfast.  I wanted to take in the whole day and enjoy Wicked so I took some Adrafinil.  We got back to the hotel and got ready to go to a museum or other point of interest.

But, DH wanted to rest a bit first.  Then our son closed his eyes for a bit…

So, I found myself the only one awake for the afternoon.  They both work up in time for the show…

Sigh  It was a great show, though.

A recent Christmas I was going to get my son some Adrafinil as a gift.  The original place we bought it didn’t have any more stock so I tracked it down as a surprise.  He was going to give me some, as well, but couldn’t get it from the original source, either.  So he found something very similar called Modafinil.  GMTA!


20-years-vaf

 

And this year…

Saturday, 4/23/16 really was one of the best days I’ve had in a long time.

I’ll be writing a longer post about that later on my travel blog but here’s the original plan: https://maryoblog.com/2016/04/23/busy-saturday/

Suffice it to say, we arrived at the Tattoo and I got no nap at all, all day!

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