Thank you, Bob, and good morning, everyone. As Bob mentioned, we remain incredibly enthusiastic about the accomplishments of Team Summit only 1 year into our partnership with Akeso. Before touching on ivonescimab's unique mechanism of action and clinical highlights, I would like to remind you of clinical work that has been conducted today with ivonescimab. Over 1,600 patients have been treated with ivonescimab. Currently, between Summit and Akeso, there are 19 clinical trials around the globe evaluating ivonescimab, 4 of which are Phase III clinical trials, along with 15 Phase I or II trials; 7 of these 19 trials are evaluating ivonescimab in solid tumor setting beyond non-small cell lung cancer. We are sponsoring 2 of these clinical trials, HARMONi and HARMONi-3 2 Phase III clinical trials in non-small cell lung cancer.
We are fortunate to have created such a strong partnership and foster an ongoing collaboration with Akeso and the ability to leverage data for multiple solid tumor studies supporting and informing Summit on clinical development in our licensed territories. As a reminder, ivonescimab is our lead investigational compound and the only PD-1, VEGF bispecific antibody in Phase III in the U.S., Canada, Europe or Japan or licensed territories. ivonescimab brings these 2 highly validated mechanics together into one novel molecule targeting both PD-1 and VGEF. What differentiates ivonescimab and its intentional design is its cooperative binding characteristics. Basically in the presence of VEGF, the binding affinity of ivonescimab to PD-1 in vitro increases by 18-fold. In the presence of PD-1, the binding affinity VGEF by over fourfold in vitro.
In addition to the half-life of ivonescimab, which is approximately 6 to 7 days compared to the estimated half-life of bevacizumab of 20 days or pembrolizumab of 23 days, combined with a cooperative binding characteristic of ivonescimab and it's purposely engineered structure, we believe that ivonescimab can go beyond the sequential administration of anti-PD-1 and anti-VGEF therapy. Our goal is to improve up on previously established efficacy standards and safety profiles associated with these 2 targets, and we believe ivonescimab has the potential to achieve this.
Next, I would like to review our 2 ongoing Phase III trials, HARMONi and HARMONi-3 that are designed with registrational intent. As Bob mentioned, our partner, Akeso is expecting Phase III data this quarter, which will play a key role in supporting and informing our own clinical development efforts. Starting with our registrational Phase III HARMONi trial, this is our fast-to-market approach where we are evaluating ivonescimab as a second-line treatment in non-small cell lung cancer patients with EGFR mutations who have progressed following a third-generation TKI such as osimertinib. We intend to complete enrollment in this trial in the second half of 2024. In addition, our partners at Akeso have run a parallel trial known as HARMONi-A or AK112-301. This is a trial run specifically in China, evaluating patients who have progressed after an EGFR TKI, a very similar population. Akeso completed enrollment in HARMONi-A, performed its PFS analysis, its primary endpoint and submitted its NDA application for marketing approval in China to the Chinese regulatory authority, the CDE. Akeso has previously announced earlier this year that we expect to receive a decision from the CDE in this quarter, the second quarter of 2024. If approved by the CDE, we anticipate the result of HARMONi-A to be disclosed along with an approved label. This decision, we believe, could be a catalyst event for ivonescimab and therefore, Summit for 2 reasons: one, the HARMONi-A trial is conducted in a very similar patient population as our Phase III HARMONi trial. And two, recall that earlier, we discussed that our HARMONi trial is a multiregional trial enrolling patients in North America, Europe and China. For those patients coming from China, given the overlapping patient population and similar clinical trial design, a large number of those patients enrolled by Akeso in the HARMONi-A trial are also intended to be included in our analysis for our HARMONi trial. We expect to include all patients except those who did not receive a third-generation TKI in China into our analysis for our HARMONi trial. That means we would include approximately 80% to 85% of the HARMONi-A patients from China in our HARMONi trial. Therefore, while we are adding additional patients from North America and Europe, we believe a positive readout and result for the trial in China by our partners at Akeso in China could be a positive signal for our multiregional HARMONi trial. As previously discussed, we expect to complete enrollment of our multiregional HARMONi trial in the second half of this year.
Moving next to our Phase III HARMONi-3 II trial, we are evaluating ivonescimab as frontline treatment for patients with squamous non-small cell lung cancer. This head-to-head trial is designed to compare ivonescimab plus chemotherapy against the current standard of care pembrolizumab plus chemotherapy. We began enrollment in this trial in the fourth quarter of 2023 and are continuing to open sites and expand the reach of the clinical trial as quickly as possible. Across both these trials, we continue to work tirelessly to achieve our aggressive but realistic goals for ivonescimab and ultimately improve up on existing treatment options for the many lung cancer patients with serious ongoing unmet needs. Our conviction and belief in the potential of ivonescimab and our decision to quickly pursue 2 registrational Phase III trials has come in part from data generated from Phase II clinical trials conducted by Akeso. Data announced in the first quarter this year and later presented in March at the European Lung Cancer Conference from Akeso Phase II AK112-201 trial, evaluating ivonescimab plus chemotherapy in multiple lung cancer settings showed patients with first-line advanced or metastatic squamous non-small cell lung cancer without actionable genomic alterations, a patient population that align closely with our HARMONi-3 trial, achieving a medium progression-free survival of 11.1 months. Median overall survival has not yet been reached after a median follow-up time of 22.1 months. In this cohort, treatment-related adverse events leading to discontinuation of ivonescimab was 11%, and there were no treatment-related adverse events leading to that. In a separate cohort from this trial, which support our HARMONi trial, patients with advanced or metastatic non-small cell lung cancer with tumors positive for EGFR mutations and having progress following an EGFR TKI achieved median progression-free survival of 8.5 months and a median overall survival of 22.5 months was observed. In this cohort, there were no treatment-related adverse events leading to discontinuation of ivonescimab or death.
In both settings, the Phase II data for ivonescimab plus chemotherapy shows favorably when considering the historical results seen from the standard of care in each setting. Also presented recently at ELCC 2024, ivonescimab has promising Phase II data in non-small cell lung cancer patients with brain metastasis. The analysis consisted of 35 patients from Akeso Phase II trials, AK112-201 and AK112-202 with advanced or metastatic non-small cell lung cancer who had asymptomatic brain metastases at baseline and receive ivonescimab alone or in combination with chemotherapy -- across all patients analyzed, and intracranial response rate of 34% was achieved by renal criteria and median and intracranial progression-free survival of 19.3 months. All patients who did not achieve a response, demonstrated stable disease or nonprogression. No patient experience intracranial disease progression at the time of the initial follow-up scan and importantly, no cases of intracranial bleeding complications were observed in these patients. Promising development and improved therapy options are needed for patients with lung cancer as is expected that up to 20% who developed brain metastases across all type of lung cancer. And for those with common driven -- driver mutations such as EGFR mutation, it is expected that 50% to 60% may develop brain metastases over the course of their disease.
We believe that the study data is very promising, especially when considering the current therapeutic options and standard of care in these settings. Ivonescimab's favorable Phase II data has supported and continue to support our decision to confidently move forward in both of our Phase III clinical trials and continue to build out our development strategy beyond lung cancer. While non-small cell lung cancer indicates represent our initial development plan for ivonescimab, we will continue to expand our clinical program. HARMONi and HARMONi-3 represent the first step in our strategy, and we believe ivonescimab has strong potential to make a difference in several other solid tumors as well. We have received a high level of interest from key opinion leaders and other physician leaders for what ivonescimab may do make a significant positive difference in and outside of lung cancer. We continue to receive and are considering multiple inquiries for potential investigator-sponsored trials or IST programs, and we expect to share additional information later in 2024. In addition, as we have been discussing this year, we plan to expand our reach beyond non-small-cell lung cancer response studies as well. We continue to work with our partners at Akeso to review Phase II clinical trial data in order to determine our next steps forward.
As you can see from this slide, there are a number of potential indications rising from gynecological tumors, head and net cancer, Triple-negative breast cancer, colorectal cancer and other solid tumors where we may be able to further explore ivonescimab. We continue to be very optimistic about the promising potential of ivonescimab, including working through designing future clinical trials and working through the diligence process to optimize these trials while obtaining more [indiscernible] trial clinical data. We are excited over the coming 6 to 9 months to provide more details regarding our clinical development plan for ivonescimab. Finally, to capitalize on and expand our reach with physicians from KOL and academic leaders to community physicians and local caregivers, we continue to participate in key medical meetings and well participating in the upcoming ASCO conference, where 2 ivonescimab abstracts for presentation have already been accepted, including the expected HARMONi-A trial data from China. We intend to educate and activate as many physicians and health care leaders as possible regarding ivonescimab and its potential. With that update, I will now ask Manmeet to provide details on our financial position and outlook.