Brian Sullivan
Analyst · Craig-Hallum
Thank you, Mike. Good afternoon, and thank you, everyone, for joining us today. As always, we appreciate your continued support of Celcuity. On this call, we'll update you on our fourth quarter results, and I'd like to focus particularly on our recent collaboration agreements, the status of our ongoing collaboration discussions of product development projects and an update on the FACT-1 and FACT-2 clinical trials. Vicky will follow my comments with a discussion of our financial results, and then we'll open up the line for questions.
Celcuity's third-generation diagnostic platform, CELsignia identifies the underlying cellular activity, dysregulated pathway signaling in the patient's tumor, so that are matching and thus, the most potentially efficacious targeted therapy can be prescribed. Since dysregulated signaling is too complex for molecular test to characterize in most cases, we can leverage the capability of our CELsignia platform to create a proprietary business strategy.
Our goal is to help pharmaceutical companies obtain new indications for their targeted therapies to treat the patients, our CELsignia tests are uniquely able to identify. To take a first step towards realizing this goal, we collaborate with pharmaceutical companies to evaluate the efficacy of their targeted therapies in patient populations selected by CELsignia pathway activity test. If successful, these collaborations would represent us critical step towards obtaining a new indication that expands the market for the evaluated targeted therapies.
We believe there is a significant unmet need for new therapeutic options for HER2-negative breast cancer patients. Our research suggests that many of these patients have an undiagnosed and untreated disease mechanism. We believe our CELsignia test can identify the disease mechanism for roughly 25% to 35% of these patients and the targeted therapy, most likely to benefit them.
Our efforts in this area are gaining momentum. And in just the past 2 months, we have announced our third and fourth clinical trial collaborations. In December, we announced the collaboration with Massachusetts General Hospital and Puma Biotech for a Phase II trial to evaluate the safety and efficacy of Puma's drug Nerlynx and Astrazeneca's drug Faslodex. We followed the announcement of this collaboration with another announcement in late January for clinical trial collaboration.
The most recent collaboration is with Sarah Cannon Research Institute and Pfizer for a Phase II trial that will evaluate the efficacy and safety of 2 Pfizer targeted therapies, VIZIMPRO, pan-HER inhibitor and XALKORI, a c-Met inhibitor. We're proud to have advanced and finalized these agreements despite the headwinds from COVID-19.
Now these new trials will be our first collaboration to study late-stage metastatic patients. Both the FACT-1 and FACT-2 trials are evaluating anti-HER2 therapies in early-stage HER2-negative breast cancer patients. The goal of each of these 2 trials is to demonstrate the breast cancer patients identified by our CELsignia HER2 pathway activity test, obtain a higher rate of pathological complete response to new neoadjuvant anti-HER2 drug treatments than from current standard of care chemotherapies. Some patients who receive a pathological complete response to neoadjuvant drug treatment are less likely to have their cancer recur. We're hopeful our CELsignia test can play a significant role in extending the lives of many breast cancer patients.
We're excited about our new collaborations and the opportunity to work with some of the most prominent cancer research centers. We're equally excited about the additional collaboration discussions we have in progress, and we're hopeful that we'll be able to announce new agreements in the coming months. The collaborations we expect to close soon will evaluate patients with either hyperactive HER2 signaling tumors or hyperactive c-Met and HER2 signaling tumors.
Our discussions with pharmaceutical companies to evaluate PI3K inhibitors in breast and ovarian cancer patients with hyperactive PI3K signaling are also progressing. Since these discussions are at an earlier stage and those involving patients with hyperactive HER2 or c-Met signaling, we don't expect those collaborations to close until sometime in mid-2021 or beyond.
We're looking forward to having the opportunity to collaborate with the clinical investigators that will be conducting these new trials. They're amongst the most respected oncology thought leaders and researchers in the country, and we believe their interest in collaborating with us reflects their respect for the unique potential our CELsignia test offers to identify undiagnosed disease drivers for their patients.
During the quarter, we continued to advance development of additional CELsignia pathway activity test. Our goal is to develop new CELsignia tests that identify RAS pathway driven cancers, undetectable with molecular tests in breast and ovarian cancer. This regulated signaling involved in RAS network nodes is responsible for a significant percentage of all cancers, which has led many pharmaceutical companies to sponsor research in this area. We expect to report data for these new tests at a cancer conference in the second quarter of 2021.
Our CELsignia platform also provides unique insights into the interdependence of the various RAS pathways. In many pathway is a targeted therapy that inhibits 1 RAS pathway, in turn, may activate another RAS pathway, and this is typically referred to as a resistance mechanism, which at present, can reduce the efficacy of the targeted therapy. For instance, it's generally understood that the inhibition of PI3K can detrimentally activate mTOR signaling and vice versa in some patients. With CELsignia, we can analyze these interactions between the different pathways, this interconnected network using a patient's tumor cells.
Therefore, it allows us to identify drug combinations that can blockade these interactions and prevent the resistance mechanisms from occurring. The benefit for the patient would be better tumor control and ultimately, longer overall survival. In addition, we can also assess the relative potency and efficacy of the different therapies targeting RAS nodes. And this enables us to characterize the relative superiority of the different approved and investigational targeted therapies for RAS pathways which helps guide our collaboration activities.
Finally, I'd like to update you on our 2 active trials. As you may be aware, COVID-19 impacted clinical trial activities in general as hospitalizations began increasing rapidly in mid-November. This is similar to what occurred earlier in the year, but not quite as severe.
Since the number of COVID-19 related hospitalizations peaked a few weeks ago, clinical trial activities appear to have generally resumed more broadly. We expect interim results from our FACT-1 and FACT-2 trials in late 2021 or early 2022. And as you're all aware, it's hard to predict future COVID-19 related impacts on clinical trials. But with the rollout of the vaccines, we're hopeful this most recent bout of COVID-19 delays is the last.
That concludes my initial remarks. I'd like to turn it over now to Vicky to review our financial results.