George Ng
executive
Thank you, Craig. I appreciate the opportunity to speak -- meet with you all today. My name is George Ng. I'm the CEO of Processa Pharmaceuticals, again, NASDAQ traded company with a ticker symbol PCSA. And as Craig mentioned, I likely will be making forward-looking statements today. So please take note of that.
At Processa Pharmaceuticals, we develop next-generation cancer drugs. And we do so with a derisked approach to development. Unlike some of these other companies that have taken a high risk, but high-reward approach, we have decided to take a derisked approach in that we're not developing wholesale new therapies and treatments and drugs in that sense, right? We are taking current cancer therapies and drugs that have issues, and we make them better in that by developing our drugs to either work in concert or altering existing drugs and anticancer agents. We make them more effective as well as -- in terms of higher efficacy as well as better safety as well.
And so how do we do this? We do this by altering the distribution and/or metabolism of these current cancer therapies, drugs and anticancer agents. And we do this with using a proprietary regulatory science approach that our seasoned development team has used to the tune of 30 regulatory approvals to date, so very successfully. And this regulatory science approach is also compliant with the new FDA Project Optimus requirements that now require pharmaceutical companies to come up with an optimal dose for oncology drugs rather than just a maximum tolerated dose. Fortunately for us, while some other companies may be scrambling to comply with this new requirement, our development team has been doing this all along, including with our current drugs in our pipeline.
And despite decades of advancements and developments in the oncology space, there's still a huge high unmet need. Despite these developments, cancer is still the second leading cause of death. And so there is a need for better cancer drugs and therapies. And so in our pipeline, we currently have 2 oncology drug products, PCS6422 and PCS11T. As for PCS6422, what we do is our 6422 drug is given in combination with capecitabine, which is a well-known, widely used chemotherapy drug that has its issues. For example, 35% to 70% of all patients on capecitabine can't tolerate it. So doctors either have them go off of drug altogether or give them a lower dose of capecitabine, which is not optimal. And so what we do is when we give it in combination with capecitabine, we actually make it safer and also create higher exposure which -- to the active ingredient, which also makes it more effective. And our Phase Ib results, which we previously reported support this in that although it was a small study, we had a 67% response rate, which is very high.
As I may have mentioned previously, for regular capecitabine, only 20% to 40% of all patients respond depending upon the cancer indication. So we have a much higher response rate. And our progression-free survival is 3 to 11 months. And we even had a much better safety profile in that only -- for example, only 6% of all our patients actually came down with hand–-and-foot syndrome, which is the leading side effect for capecitabine. For example, for regular capecitabine or capecitabine given alone, about 50% of all patients come down with hand-and-foot syndrome with 20 to 30 patients coming down with severe hand-and-foot syndrome, which is -- where it's so severe that a patient can't grasp anything and they can't walk. In our case, we had no cases of severe hand-and-foot syndrome and only 1 mild case of hand-and-foot syndrome.
So we're excited about the results. And because of that, we actually initiated a Phase II study last August. So we're in the middle of that right now. It is a study that's meant to be done in 2 parts. So we are in the process of enrolling, treating the first 20 patients. And after 20 patients are enrolled and treated, we will do an interim analysis, and then we'll be able to release the interim analysis data. And so right now, we're on track to complete enrollment within the second half of this year and also release preliminary analysis results in that time frame as well.
As for our second drug -- sorry, oncology drug product, PCS11T, we basically altered SN-38, which is the active ingredient in irinotecan and Onivyde and a few other drugs as well. And the problem with irinotecan -- so we altered it to add a chemical transporter that preferentially draws in more of SN-38 into the tumor cell over surrounding healthy tissue. And the reason why that's important is that irinotecan and Onivyde and the other SN-38 drug products, they all have black box warning. So -- and that's a case where the side effects are so severe that they can be deadly, right? And so -- but by drawing in more of SN-38 into the tumor cell over surrounding healthy tissue, then we have less off-target effects and we improve safety, less side effects, less toxicities to the surrounding tissue. And so our goal is to try to remove part or all of a black box warning. And so far, from preclinical animal studies, we have shown that in both -- over both irinotecan and Onivyde, we preferentially draw in more of SN-38 than those drugs do. And so we're excited about that.
And aside from our 2 oncology assets, we also have 2 non-oncology assets that we have partnered or in the process of partnering and doing collaborations with. The first one is PCS12852, and it was a drug product initially developed for gastroparesis. We recently announced a deal that we did with Intact Therapeutics for an out-licensing deal and a collaboration with Intact Therapeutics. And the basic deal terms are that it was about $454 million in total deal value with about $2.5 million in near-term -- potential near-term payments and milestone payments. And then also, we received a low double-digit royalty as well. And we also even -- we also have included in the deal a 3.5% equity stake in Intact Therapeutics.
And why I'm really excited about that is the team there at Intact. They're experienced, and they are well known in the GI space, especially one individual who is a well-known researcher and expert in GI diseases, and in fact, was the co-founder and was the technological brains behind what was at one time the largest GI-focused pharmaceutical company in the world before it was acquired for billions by another company, right? And so with his involvement, we are very excited about the prospects, and we're confident that Intact and its team can move this asset through development. And so we're excited about that.
In terms of PCS499, we are fortunate that due to a recent change in regulation, we are able to pivot 499 back to the renal nephropathy space. where it was originally developed. But -- and in that the FDA is starting to allow a surrogate endpoint that is easier to meet. And since that time, about 4 or 5 drugs have been approved with this new surrogate endpoint, including one by Novartis and one by Travere. And why I'm excited about PCS499 is that from the data that's already been generated, we believe that we can go straight to a Phase III adaptive pivotal/registrational study. So that would -- and that would be the only study that would be required prior to FDA submission for approval. And so we're excited about that.
And so -- and we're also excited because out of the drugs that have been approved under the surrogate endpoint, they all have black box warnings. Our drug would be the only one, if approved, that would not have a black box warning. And so that gives us a huge advantage over these other drugs in the space, which is pretty hot right now. And so right now, we are in the process of designing and coming up with a Phase III adaptive study protocol. And so in the next few months, we plan to submit a pre-FDA meeting package to the FDA regarding the Phase III adaptive study, the proposed Phase III adaptive study, I mean. And we're hoping to get FDA feedback. And with FDA feedback, then we go from where we didn't really have much to now a Phase III-ready study drug. So that's why we're really excited about that.
And we're in the process of speaking and meeting with several potential partners for this drug. And in fact, I was just at the big bio conference, and we had over 30-plus meetings just on 499. So there's a lot of excitement around that. And we will begin the process of looking for a partner and negotiating with companies for a partnership for this and collaboration.
And so just in summary, I'm excited, and I think everybody should be excited about Processa because of 4 major reasons. One, again, we're taking a derisked approach. So we're not reinventing the wheel. We're not having to, unlike some of these other companies, show and prove that their drug works, we just have to show that current cancer drugs, we can make them work better in terms of making them more effective and safer. And so that's a lower bar and a derisked proposition.
And we have a seasoned management team with extensive public company experience. As I mentioned previously, we have a development team that has 30 regulatory approvals, and we have leadership that have been at other publicly traded companies and executed all the way through to meaningful milestones. And we also have multiple drug products with high potential in our pipeline. So we're not just one shot at the apple. We actually have multiple shots on goal.
And lastly, we have upcoming catalysts. As I mentioned previously, with PCS6422, we anticipate Phase II preliminary -- doing a Phase II preliminary analysis and issuing or releasing data in the second half of this year. And then we also have potential non-dilutive funding from partnering and deal payments and milestones from PCS12852 as well as from PCS499 pending a deal being done with that drug.
So I thank you for your time, and I appreciate you spending -- taking time out of your busy day to hear me speak.