Jim Dentzer
Analyst · Cantor
Thanks, Ahmed. In addition to strengthening our leadership team with Dr. Hamdy, we continue to make steady progress in our TakeAim lymphoma study which is evaluating emavusertib in combination with ibrutinib in PCNSL patients. As a reminder, the TakeAim lymphoma study is a single-arm study with an ORR endpoint in patients with PCNSL who have progressed on BTKI treatment. And after collaborative discussions with FDA and EMA over the last year, we expect the study to support accelerated submissions in both the U.S. and Europe. As of January 2, 2025, the most recent data cutoff date, 27 patients with relapsed/refractory PCNSL have been treated with the emavusertib and ibrutinib combination, including 7 BTKI naive patients and 20 BTKI experienced patients. Among 13 of the 20 BTKI experienced patients for whom change in tumor burden data were available, 9 patients demonstrated a reduction in tumor burden, including 6 objective responses, 2 partial responses and 4 complete responses. With 3 of the 4 CRs lasting more than 6 months and 1 patient who's been in complete remission for almost 2 years and is still on study. Among 6 of 7 BTKI-naive patients for whom change in tumor burden data were available. 5 patients demonstrated a reduction in tumor burden, including 5 objective responses, 4 partial responses and 1 complete response. We expect to have additional data from the TakeAim lymphoma study at ASH later this year. In addition, over the next 12 to 18 months, we'll be focused on enrolling 30 to 40 additional patients we'll need for the NDA submission. And we'd like to see 6 to 8 responses in that data set. Now, let's turn to AML. As you'll recall, at the ASH conference in December, Dr. Eric Weiner from Dana-Farber, presented data for 21 patients with a FLT3 mutation who had received fewer than 3 lines of prior therapy and were treated with emavusertib as monotherapy at the RP2D of 300 milligrams BID. These data show a 38% composite CR rate in the salvage line setting with 10 objective responses in 19 response-evaluable patients and 7 of the 10 responses reported at the first assessment. To put these data into context, gilteritinib, the leading FLT3 inhibitor in relapsed/refractory AML was approved with a composite CR rate of 21%. In a patient population where only 13% of patients had been previously treated with a FLT3 inhibitor. In the emavusertib study, over 80% of the patients had been previously treated with a FLT3 inhibitor. We believe the reason the emavusertib data are so compelling is its novel mechanism of action. It blocks both IRAK4 and FLT3. For several years, it has been suggested in the literature that blocking IRAK4 can enable patients to overcome adaptive resistance to FLT3 inhibition. These clinical data clearly support that thesis. Finally, I'd like to provide an update on our progress with the triplet study in frontline AML. As a reminder, we initiated a Phase I study last year, of emavusertib as an add-on agent to venetoclax and azacitidine in frontline AML. This study is assessing safety and tolerability, where emavusertib is added to a patient's ven-aza regimen in 7, 14 and 21-day dosing regimens after they have achieved a CR in ven-aza but are still positive for minimal residual disease. We have successfully completed the 7-day dosing cohort and enrollment of the 14-day cohort is currently ongoing. As you can see, we've had a very exciting and productive quarter. We look forward to providing additional updates as the year progresses. With that, I'll turn the call back to Diantha for a financial update. Diantha?