Ming Shi
Analyst · Goldman Sachs
Thank you, Wei-Guo. Slide 13, please. Yet our clinical programs that continue to grow and mature and cover a broad background of hematology-oncology product. And this slide lays a 15-plus ongoing registration trial for 7 leading products globally, including life cycle indication of market products and late-stage assets with the anticipated NDA filing time in the next few years.
Fruquintinib, savolitinib and Surufatinib already on the market in China and 2 are in global partnership with Takeda and AZ. And HUTCHMED is leading the development of multiple life cycle indication for this product in China, which I alluded to.
Our next wave late-stage compound in registration trial, also in the hematology space, and 2 compounds received breakthrough therapy designation in China, Sovleplenib in immune thrombocytopenia, ITP and amdizalisib, our PI3K delta inhibitor in third-line follicular lymphoma. And the EZH2 inhibitor tazemetostat is the first in-licensed product from Ipsen, and we are doing a bridging study and registration in China.
And notably, new to the list is HMPL-453 listing at the bottom here is our FGFR inhibitor and also entered the registration trial in intrahepatic cholangiocarcinoma and leading our third wave product into the registration trial.
Next slide, Slide 14. And Fruquintinib global regulatory filing has been going very well and which is supported by the results of Fresco-2 and recently published in Lancet and also the data from Fresco, the China registration trial. So NDA for fruquintinib, Dr. Su already mentioned granted a priority review by the U.S. FDA and PDUFA date is November 30. And MAA validation has started by EMA in June. And also, we worked our partner, Takeda, as doing the Japan filing later this year.
Next slide. And the fruquintinib partnership with Takeda has been progressing very well. And Johnny already mentioned, we have received an upfront payment of $400 million. And also the joint team established and started the collaboration already. And our NDA filing, the MAA and Japan and India as well on target.
Also on the commercial front, Takeda is initiating launch readiness in advance for the PDUFA date. So -- and also regulatory and life cycle indication part and join the Takeda-HUTCHMED team already in the discussion and also with our external advisers to be held to discuss the LCM strategy. And HUTCHMED is ongoing clinical program in China may also help inform our clinical development decisions.
Slide 16. And fruquintinib NDA for the second-line gastric cancer is already accepted in China. And this is based on the FRUTIGA second-line gastric cancer trial met one of the dual new primary endpoint of PFS, which is the [indiscernible] and clinically meaningful. And the other primary endpoint of OS was not a satisfactory significant specified as status quo plan. So we completed our sNDA filing and the NDA has been accepted by MMPA in April. We hope to extend the patients serving gastric cancer with this high unmet need.
Slide 17. On the fruquintinib life cycle indication development, we are also very pleased to receive the breakthrough therapy designation in China for the combination with sintilimab, the PD-1 from Innovent in July for the treatment of advanced endometrial cancer with the proficient mismatch repair subtype. And E&C incident and mortality are projected to grow in China and the patient who progressed on first-line therapy remains with a high unmet medical need. And we have completed the single-arm registration Phase II study and if the favor of results from this trial could lead to the regulatory approval in this treatment setting.
Next slide, Slide 18. Sovleplenib is the highly differentiated oral Syk inhibitor with breakthrough therapy designation in ITP in China. We are particularly encouraged that our Phase I/II result demonstrate the robust overall response rate of 80% and the durable response rate of 40% in relapsed or primary patients. These high response rates are on par with the current widely used second-line treatment for ITP such as TPO-RA. And the same response rate has been shown in patients with previously treated with TPO or not and much higher than that the existing Syk inhibitor Tavalisse in this setting.
So we believe Sovleplenib has the best-in-class potential in the ITP setting. And the result Phase I study was already published in the Lancet hematology in April this year, and we have completed enrollment of ITP Phase III registration trial ESLIM-01 and expect the top line results in [indiscernible]. So if positive, we prepared to NDA filing in China later this year.
Next slide. Slide 19. Amdizalisib, our differentiated PI3K delta inhibitor is currently going on with 2 single-arm Phase II registration studies in China, in the third-line follicular lymphoma and second-line marginal zone lymphoma. The updated Phase I data were presented at International Congress on malignant lymphoma in June this year, demonstrate a compound is not only promising efficacy with higher response rate, 4-month PFS rate and durations of response rate in lymphoma and MZL, but also favorably safety profile when compared with the same class of compounds.
As highlighted with the low incidence of AE of interest as well as a low discontinuous rate on the treatment. So this, of course, needs to be further confirmed in a larger patient population. I'm very pleased we have completed enrollment for this pivotal trial in follicular lymphoma earlier this year and with the clinical readout and the potential NDA filing later this year.
Next slide. There are 7 registration trial for our MET inhibitor savolitinib and all currently enrolling. And 3 are led by our partner, AstraZeneca, globally and 4 led by HUTCHMED in China in multiple cancers with MET operations, including non-small cell lung cancer and papillary renal cell carcinoma. In addition, we have entered the registration phase in gastric cancer with MET amplification up the top trial results presented earlier at ACR this year.
Next slide. Our innovative early-stage pipeline continues to grow, and here are only a few examples. And I mentioned earlier HMPL-453, the FGFR inhibitor, has entered registration trial in the cholangiocarcinoma after discussion and in agreement with the CDE. And the clinical proof-of-concept study were presented at ASCO this year and the clinical POC data for HMPL-306, our IDH1 and 2 dual inhibitor, also presented at EHA this year. The randomized Phase II dose has been determined and will consult with the CD on the registration path forward.
We also initiated a combination of a trial of tazemetostat and also PI3K delta inhibitor amdizalisib in molecular hematology indications. Also note mentioning is the newest addition to our early-stage pipeline, including a differentiated SHP2 inhibitor HMPL-415.
Next slide. I'm very proud our R&D team remained focused and executed very well for the first half of the year. On the regulatory activity, we submitted regulatory filings for fruquintinib and all on target with our partner. And also the Japan third-line CRC is also in preparation. We have submitted a supplemental NDA filing for, as I mentioned earlier, for the gastric cancer indication for fruquintinib and mNDA already accepted our application. And we received breakthrough designation for fruquintinib plus sintilimab in the second-line endometrial cancer.
Also want to mention here and following the dialogue with the PMDA regarding the surufatinib. We have decided now to file a Japanese NDA for neuroendocrine tumor on the basis of clinical trial data available. And we also anticipate data readout potential NDA filing in China for Sovleplenib second-line plus ITP and Amdizalisib for third-line follicular lymphoma based on the pivotal trials. And also savolitinib first-line non-small cell lung cancer patient with MET Exon 14 mutation. First-line data will be presented in September at WCLC. And also, we anticipate the endometrial cancer readout.
On the development side, HUTCHMED and our partner, AZ will continue to complete the enrollment of multiple registration trial for savolitinib in non-small cell indications. And we also will complete enrollment for fruquintinib plus sintilimab in the renal cell carcinoma. And the heme product will complete the enrollment for Amdizalisib in the second-line MZL and tazemetostat bridging study for third-line follicular lymphoma.
We presented clinical readout for savolitinib in second-line gastric cancer in meta-amplified patients at AZR and initiate the registration trial for savo in the meta-amplified gastric cancer. And also, we have completed enrollment of Sovleplenib Phase II part of the second-line warm autoimmune hemolytic anemia indication and will decide for the Phase III after data readout.
So to recap our R&D progress, HUTCHMED has a deep and broad portfolio and multiple near-term development catalysts in 2023 and '24. So our R&D team will remain sharply focused on the execution of our late-stage product development.
So with that, I'll wrap up my part of the presentation, I will turn the podium to Dr. Wei-Guo Su, our CEO and CFO. Wei-Guo?