Vincerx Pharma To Present Three Posters at ASH 2023 in December

On November 2, 2023 Vincerx Pharma, Inc. (Nasdaq: VINC)("Vincerx"), a biopharmaceutical company aspiring to address the unmet medical needs of patients with cancer through paradigm-shifting therapeutics, reported that it will present three posters related to VIP943 (NCT06034275), VIP924 (in preclinical studies), and enitociclib (in collaboration with University of Calgary) at the 65th American Society for Hematology Meeting (ASH) (Free ASH Whitepaper), taking place in San Diego California from December 9 to 12, 2023 (Press release, Vincerx Pharma, NOV 2, 2023, View Source [SID1234636801]).

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"The three ASH (Free ASH Whitepaper) 2023 posters highlight the strong scientific foundation for Vincerx’s programs. We look forward to providing new data on the robust preclinical activity of our lead antibody-drug conjugate (ADC), VIP943, which recently began enrolling patients with relapsed/refractory acute myeloid leukemia (R/R AML), myelodysplastic syndrome (MDS), and B-cell acute lymphoblastic leukemia (B-cell ALL)," said Ahmed Hamdy, M.D., Chief Executive Officer of Vincerx. "In addition, we are pleased to share preclinical data related to the activity of VIP924, a first-in-class CXCR5 ADC for the treatment of B-cell malignancies. Also, in collaboration with University of Calgary, we show enitociclib’s preclinical activity in pediatric leukemia."

Poster Presentation Information:

Title: Selectivity and Safety of VIP943: A Novel CD123-Targeting Antibody-Drug Conjugate (ADC) Using a Proprietary Linker and Payload Class
Session Name: 604. Molecular Pharmacology and Drug Resistance: Myeloid Neoplasms: Poster I
Session Date: Saturday, December 9, 2023
Presentation Time: 5:30 PM – 7:30 PM, Pacific Standard Time
Location: San Diego Convention Center, Halls G-H
Publication Number: 1435
Presented by Beatrix Stelte-Ludwig, Vincerx Pharma

Title: Comparison of the CXCR5-Antibody Drug Conjugate (ADC; VIP924) to a CD19-ADC and a CD79b-ADC in a Humanized Rec-1 Mantle Cell Lymphoma (MCL) Mouse Model
Session Name: 605. Molecular Pharmacology and Drug Resistance: Lymphoid Neoplasms: Poster II
Session Date: Sunday, December 10, 2023
Presentation Time: 6:00 PM – 8:00 PM, Pacific Standard Time
Location: San Diego Convention Center, Halls G-H
Publication Number: 2809
Presented by Tibor Schomber, Vincerx Pharma

Title: Targeting CDK9 in KMT2A-Rearranged Infant Leukemia: Evidence for Activity and Drug Synergy with Enitociclib
Session Name: 616. Acute Myeloid Leukemias: Investigational Therapies, Excluding Transplantation and Cellular Immunotherapies: Poster III
Session Date: Monday, December 11, 2023
Presentation Time: 6:00 PM – 8:00 PM, Pacific Standard Time
Location: San Diego Convention Center, Halls G-H
Publication Number: 4293
Presented by Ritul Sharma, University of Calgary

Ultragenyx Reports Third Quarter 2023 Financial Results and Corporate Update

On November 2, 2023 Ultragenyx Pharmaceutical Inc. (NASDAQ: RARE), a biopharmaceutical company focused on the development and commercialization of novel products for serious rare and ultrarare genetic diseases, reported its financial results for the quarter ended September 30, 2023 and provided its financial guidance for the year (Press release, Ultragenyx Pharmaceutical, NOV 2, 2023, View Source [SID1234636799]).

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"We’re in a strong financial position due to growing demand for our commercial products, completion of our recent offering, and our disciplined expense and portfolio management," said Emil D. Kakkis, M.D., Ph.D., chief executive officer and president of Ultragenyx. "We’ve also made significant progress on our key clinical programs and highlighted new, interim data from UX143 for osteogenesis imperfecta, GTX-102 for Angelman syndrome, and UX701 for Wilson Disease at our Analyst Day in October demonstrating promising therapeutic potential in these larger indications with further updates to come in 2024."

Third Quarter 2023 Selected Financial Data Tables and Financial Results

Revenues (dollars in thousands), (unaudited)
Three Months Ended September 30, Nine Months Ended September 30,
2023
2022
2023
2022
Crysvita
Product sales $ 19,200 $ 13,184 $ 57,318 $ 34,980
Royalty revenue 35,160 — 64,221 —
Non-cash royalty revenue 20,543 5,373 42,695 15,634
Revenue in profit-share territory — 51,348 69,705 148,121
Total Crysvita revenue 74,903 69,905 233,939 198,735
Dojolvi 16,553 13,274 47,347 39,200
Mepsevii 5,633 6,045 22,552 15,839
Evkeeza 963 — 1,540 —
Daiichi Sankyo — 1,479 1,479 6,207
Total revenues $ 98,052 $ 90,703 $ 306,857 $ 259,981

Total Revenues
Ultragenyx reported $98.1 million in total revenue for the third quarter 2023, which represents 8% growth compared to the third quarter 2022. Third quarter 2023 Crysvita product sales, primarily in Latin America, were $19.2 million, which represents 46% growth compared to the same period in 2022 and 14% growth over the second quarter 2023. Third quarter 2023 also includes Crysvita royalty and non-cash royalty revenue in North America of $50.2 million, which was impacted by a decrease in channel inventory related to Kyowa Kirin Co., Ltd.’s (KKC) change from Ultragenyx labeled product to KKC’s labeled product as part of the transition of North America commercialization responsibilities for Crysvita from Ultragenyx to KKC. This one-time change occurred in the third quarter 2023, and the Company expects Crysvita channel inventories to increase to more normal levels at the end of the year. Third quarter 2023 non-cash royalty revenue in Europe was $5.5 million.

Selected Financial Data (dollars in thousands, except per share amounts), (unaudited)
Three Months Ended September 30, Nine Months Ended September 30,
2023 2022 2023 2022
Total revenues $ 98,052 $ 90,703 $ 306,857 $ 259,981
Operating expense:
Cost of sales 10,987 8,631 33,158 23,001
Research and development 157,245 237,297 487,892 534,981
Selling, general and administrative 74,917 69,841 232,966 205,290
Total operating expense 243,149 315,769 754,016 763,272
Net loss $ (159,649 ) $ (245,106 ) $ (483,449 ) $ (555,588 )
Net loss per share, basic and diluted $ (2.23 ) $ (3.50 ) $ (6.81 ) $ (7.96 )

Operating Expenses
Total operating expenses for the third quarter of 2023 were $243.1 million, including non-cash stock-based compensation of $34.9 million. In 2023, annual operating expenses are expected to decrease compared to 2022, as the company manages headcount and increases operational leverage while executing on its high-value programs.

Net Loss
For the third quarter of 2023, Ultragenyx reported net loss of $159.6 million, or $2.23 per share basic and diluted, compared with a net loss for the third quarter of 2022 of $245.1 million, or $3.50 per share, basic and diluted.

Cash, Cash Equivalents and Marketable Debt Securities
Cash, cash equivalents, and marketable debt securities were $524.2 million as of September 30, 2023. This excludes net proceeds of $326.5 million from an underwritten public offering of common stock and pre-funded warrants that closed in October 2023.

2023 Financial Guidance
For the full year 2023, the company expects:

Total revenue in the range of $425 million to $450 million
Crysvita revenue in the range of $325 million to $340 million. This includes all regions where Ultragenyx will recognize revenue, including the royalties in Europe, which have been ongoing, and the royalties in North America, which began in April 2023.
Dojolvi revenue in the range of $65 million to $75 million
Net Cash Used in Operations to be around $425 million
Recent Updates and Clinical Milestones

UX143 (setrusumab) monoclonal antibody for Osteogenesis Imperfecta (OI): Phase 2 demonstrated 67% reduction in annualized fracture rate and continuous improvements in bone mineral density
At the American Society of Bone and Mineral Research 2023 Annual Meeting (ASBMR), interim data from the Phase 2 portion of the Phase 2/3 Orbit study were presented that demonstrated treatment with setrusumab significantly reduced incidence of fractures in patients with OI with at least 6 months of follow-up and continued to demonstrate ongoing and meaningful improvements in lumbar spine bone mineral density (BMD). As of the cut-off date on August 4, 2023 and following at least six months of treatment with setrusumab, the annualized fracture rate across all 24 patients in the Phase 2 portion of the study was reduced by 67%. The median annualized fracture rate of 0.72 in the two years prior to treatment was reduced to 0.00 (n=24, p=0.042) during the mean treatment duration period of nine months. As of the data cut-off, there were no treatment-related serious adverse events (SAEs) observed in the study. Additional longer-term Phase 2 data are expected in 2024.

Patients are being dosed in the late-stage clinical trials, Orbit and Cosmic, which evaluate setrusumab in pediatric and young adult patients with OI. The Phase 3 portion of the Orbit study is targeting to enroll up to 195 patients at more than 50 sites across 12 countries. The Phase 3 Cosmic study is an active-controlled study evaluating the effect of setrusumab compared to intravenous bisphosphonate (IV-BP) therapy on annualized total fracture rate in patients aged 2 to <5 years. Cosmic is targeting to enroll approximately 65 patients at more than 20 global sites.

GTX-102 antisense oligonucleotide for Angelman syndrome: data from extension cohorts in Phase 1/2 study showed clinically meaningful improvements in multiple domains
In October 2023, interim data from the extension cohorts (Cohorts 4-7) in the ongoing Phase 1/2 for GTX-102 in Angelman syndrome were presented at an Analyst Day event. The data showed improvements across multiple domains compared to natural history data, where available, and clinical changes were associated with quantitative changes in EEG. Long-term data showed patients who stopped and restarted treatment reacquired previously gained developmental skills when they were re-dosed with the current regimen. As of the data cut-off, there have been no additional treatment-related SAEs, including lower extremity weakness, since November 2022.

Globally, sites are dosing patients in the expansion cohorts (Cohorts A-E), which will evaluate the same safety, pharmacokinetic, and efficacy measures as the extension cohorts. Data from at least 20 patients enrolled in the expansion cohorts, who have been on therapy for six months or more, are currently expected in the first half of 2024.

UX701 AAV gene therapy for Wilson Disease: Stage 1 of pivotal clinical study dosing patients; expect Stage 1 enrollment completion around the end of the year
In October 2023, interim data from the first dose cohort (5.0 x 10^12 GC/kg) in the ongoing Cyprus2+ study for UX701 in Wilson disease were presented at an Analyst Day event. The company announced four out of five patients in Cohort 1 had reductions in urinary copper and were tapering off of chelators and/or zinc therapy, including two of three earlier treated patients in the cohort that are now completely off standard of care therapy. As of the data cut-off, UX701 had been generally well-tolerated with no treatment-related SAEs.

Dosing in the second of three dose escalation cohorts in the pivotal study has been completed. The data safety monitoring board (DSMB) is scheduled to meet and will review the available safety data from Cohort 2 before making a recommendation on escalating to Cohort 3 of Stage 1 in this study. Stage 1 is currently on track to complete enrollment around the end of the year and these data are expected in the first half of 2024. During this stage, the safety and efficacy of UX701 will be evaluated and a dose will be selected for further evaluation in the pivotal, randomized, placebo-controlled stage of the study.

DTX401 AAV gene therapy for Glycogen Storage Disease Type Ia (GSDIa): Dosing in Phase 3 study complete
In May 2023, Ultragenyx announced the last patient had been dosed in the Phase 3 study. The 48-week study has fully enrolled patients eight years of age and older, randomized 1:1 to DTX401 or placebo. The primary endpoint is the reduction in oral glucose replacement with cornstarch while maintaining glucose control. Phase 3 data are expected in the first half of 2024.

DTX301 AAV gene therapy for Ornithine Transcarbamylase (OTC) Deficiency: Phase 3 study dosing patients
Ultragenyx is randomizing and dosing patients in the ongoing Phase 3 study. The pivotal, 64-week study will include approximately 50 patients, randomized 1:1 to DTX301 or placebo. The primary endpoints are response as measured by removal of ammonia-scavenger medications and protein-restricted diet and change in 24-hour ammonia levels. Enrollment is currently expected to be completed in the first half of 2024.

Conference Call and Webcast Information

Ultragenyx will host a conference call today, Thursday, November 2, 2023, at 2 p.m. PT/5 p.m. ET to discuss the third quarter 2023 financial results and provide a corporate update. The live and replayed webcast of the call will be available through the company’s website at View Source To participate in the live call, please register by clicking on the following link (View Source), and you will be provided with dial-in details. The replay of the call will be available for one year.

Syndax Pharmaceuticals Reports Third Quarter 2023 Financial Results and Provides Clinical and Business Update

On November 2, 2023 Syndax Pharmaceuticals (Nasdaq: SNDX), a clinical-stage biopharmaceutical company developing an innovative pipeline of cancer therapies, reported its financial results for the quarter ended September 30, 2023, and provided a business update (Press release, Syndax, NOV 2, 2023, View Source [SID1234636798]).

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"Syndax continues to make excellent progress against our key milestones and corporate priorities and is well positioned to potentially launch two first- and best-in-class blockbuster therapies in 2024," said Michael A. Metzger, Chief Executive Officer. "We are also pleased to announce final Phase 1 mNPM1 data with a 36% CR/CRh rate, which demonstrates revumenib’s ability as a monotherapy with excellent safety and tolerability to drive patients with mNPM1 AML to durable MRD negative remissions. We recently shared topline pivotal data for revumenib in R/R KMT2Ar acute leukemia, our second positive pivotal result over the past few months. We look forward to providing additional monotherapy and combination data, which further highlight the compelling clinical profile and utility of each asset, next month at the ASH (Free ASH Whitepaper) Annual Meeting."

New Data Announcement

The Company announced today positive data from the Phase 1 portion of the AUGMENT-101 trial of revumenib in a total of 14 patients with relapsed or refractory (R/R) mutant nucleophosmin (mNPM1) acute myeloid leukemia (AML) who met the recommended Phase 2 dose (RP2D) criteria. The final dataset includes three additional patients that were enrolled in the Phase 1 trial to complete the pharmacokinetic characterization of revumenib. In this analysis, the overall response rate (ORR)1 was 50% (7/14) with a complete remission (CR) or a CR with partial hematological recovery (CRh) rate of 36% (5/14); 100% (5/5) of CR/CRh patients were minimal residual disease (MRD) negative. 43% (3/7) of responders proceeded to transplant, all after achieving a CR or CRh. 60% (3/5) of CR/CRh patients maintained a response beyond six months. At the time of the analysis, four patients remained in response, with two patients in response over twenty-two months. Revumenib was well tolerated, and the safety profile was consistent with what was previously reported in the AUGMENT-101 trial. There were no Grade 4 or 5 QTc prolongation or greater than Grade 2 differentiation syndrome events, and no patients discontinued due to treatment-related adverse events (TREAs).

Recent Pipeline Progress and Anticipated Milestones

Revumenib

In October 2023, the Company announced positive topline data from the pivotal AUGMENT-101 trial of revumenib, Syndax’s first-in-class menin inhibitor, in patients with R/R KMT2A-rearranged (KMT2Ar) acute leukemia. The trial met its primary endpoint at the protocol-defined interim analysis stage with a CR/CRh rate of 23% (13/57; 95% confidence interval [CI]: [12.7, 35.8, one-sided p-value = 0.0036]) in the pooled KMT2Ar acute leukemia cohort. The CR/CRh rate in patients with KMT2Ar AML was 24.5% (12/49). 39% (14/36) of patients who achieved a CR/CRh underwent hematopoietic stem cell transplant (HSCT); eight of whom went to transplant prior to achieving CR/CRh and therefore, were not included in the reported CR/CRh rate. The CR/CRh responses in both the overall population and the AML subset were durable with a 6.4-month (95% CI: 3.4, NR) median duration as of the July 2023 data cut-off, with 46% (6/13) remaining in response. MRD status was assessed in 10 of the 13 patients who achieved a CR/CRh, 70% (7/10) of whom were MRD negative. Revumenib was well tolerated, and the overall safety profile was consistent with the Company’s previously reported data. TRAEs leading to dose reductions and treatment discontinuation were low. Based on the Independent Data Monitoring Committee (IDMC) recommendation, the Company stopped the trial to further accrual in the KMT2Ar cohorts.

The AUGMENT-101 pivotal data will be presented at the upcoming 65th American Society of Hematology (ASH) (Free ASH Whitepaper) Annual Meeting on Sunday, December 10, 2023. Of note, the abstract for this session only includes data from the Phase 1 portion of the AUGMENT-101 trial, however the presentation will describe the pivotal dataset.

The Company announced today that it has initiated a New Drug Application (NDA) for revumenib for the treatment of R/R KMT2Ar acute leukemia under the FDA’s Real-time Oncology Review (RTOR) program. RTOR provides a more efficient review process for oncology drugs to ensure that safe and effective treatments are available to patients as early as possible. The Company expects to complete the NDA submission by year-end 2023.

The AUGMENT-101 pivotal trial is enrolling patients with mNPM1 AML which could support a second indication in acute leukemia for revumenib. The Company expects to complete enrollment of the cohort in late 1Q24 or early 2Q24 and report topline data in 4Q24.

The Company also announced data from patients in the AUGMENT-101 trial who received revumenib as post-transplant maintenance, including patients who have been treated with revumenib maintenance for over a year, resulting in long-term responses and conversion to MRD negative status. The data will be presented at the upcoming ASH (Free ASH Whitepaper) Annual Meeting on Monday, December 11, 2023. A copy of the abstract is available on the ASH (Free ASH Whitepaper) website at www.hematology.org.

The Company has several trials of revumenib ongoing across the treatment landscape in mNPM1 and KMT2Ar acute leukemias that include the following:

BEAT-AML: Evaluating the combination of revumenib with venetoclax and azacitidine in front-line AML patients, being conducted as part of the Leukemia & Lymphoma Society’s Beat AML Master Clinical Trial. The Company expects to present preliminary safety and efficacy data in 4Q23.

SAVE: Evaluating the all-oral combination of revumenib with venetoclax and decitabine/cedazuridine in R/R AML or mixed phenotype acute leukemias. The trial is being conducted by investigators from the MD Anderson Cancer Center. Early results from the trial will be featured in an oral presentation at the ASH (Free ASH Whitepaper) Annual Meeting on Saturday, December 9, 2023. A copy of the abstract is available on the ASH (Free ASH Whitepaper) website at www.hematology.org.

AUGMENT-102: Evaluating the combination of revumenib with chemotherapy in patients with R/R acute leukemias. The Company expects to provide an update on initial safety data along with the RP2D from the trial in 4Q23.

INTERCEPT: Evaluating revumenib as a monotherapy in patients with AML who are minimal residual disease-positive following initial treatment as part of the INTERCEPT AML Master Clinical Trial.

The Company plans to initiate a trial of revumenib with 7+3 cytarabine and daunorubicin chemotherapy followed by maintenance treatment in newly diagnosed patients with mNPM1 or KMT2Ar acute leukemias in late 4Q23 or early 1Q24.

A proof-of-concept clinical trial of revumenib in patients with unresectable metastatic microsatellite stable colorectal cancer is enrolling patients, and the Company expects to provide an update on the Phase 1 trial in 1Q24.
Axatilimab

In July 2023, the Company and its partner, Incyte, announced positive topline data from the pivotal AGAVE-201 trial of axatilimab, Syndax’s anti-CSF-1R antibody, in patients with chronic graft-versus-host disease (cGVHD) following two or more prior lines of therapy. All three dose cohorts, 0.3 mg/kg every two weeks, 1.0 mg/kg every two weeks and 3.0 mg/kg every four weeks, met the primary endpoint. The ORR within the first six months of treatment at the 0.3 mg/kg dose was 74%, and 60% of these patients were still responding at one year. Furthermore, axatilimab was generally well tolerated, and the most common adverse events were consistent with on-target effects and prior trials. Syndax and Incyte expect to submit a Biologics License Application (BLA) filing by year-end 2023.

The pivotal AGAVE-201 trial results will be featured at the plenary session at the ASH (Free ASH Whitepaper) Annual Meeting on Sunday, December 10, 2023. A copy of the abstract is available on the ASH (Free ASH Whitepaper) website at www.hematology.org.

The Company expects to initiate a randomized, double-blind and placebo-controlled Phase 2 trial that assesses the efficacy, safety and tolerability of axatilimab in patients with idiopathic pulmonary fibrosis (IPF) by year-end 2023.

Incyte and Syndax expect to initiate a trial assessing axatilimab in combination with ruxolitinib in cGVHD in mid-2024.
Third Quarter 2023 Financial Results

As of September 30, 2023, Syndax had cash, cash equivalents, short and long-term investments of $379.3 million and 69.9 million common shares and prefunded warrants outstanding.

Third quarter 2023 research and development expenses increased to $39.1 million from $26.9 million for the comparable prior year period. The increase in research and development expenses was primarily due to increased employee-related expenses and professional fees as well as increased clinical and manufacturing expenses.

Third quarter 2023 general and administrative expenses increased to $17.3 million from $8.2 million for the comparable prior year period. The increase is primarily due to employee-related expenses and professional fees.

For the three months ended September 30, 2023, Syndax reported a net loss attributable to common stockholders of $51.1 million, or $0.73 per share, compared to a net loss attributable to common stockholders of $35.4 million, or $0.58 per share, for the comparable prior year period.

Financial Update and Guidance

For the full year of 2023, the Company expects research and development expenses to be $160 to $165 million and total operating expenses to be $225 to $230 million. This is a reduction from prior guidance of $160 to $175 million for research and development expenses and $225 to $240 million for total operating expenses.

Conference Call and Webcast

In connection with the earnings release, Syndax’s management team will host a conference call and live audio webcast at 4:30 p.m. ET today, Thursday, November 2, 2023.

The live audio webcast and accompanying slides may be accessed through the Events & Presentations page in the Investors section of the Company’s website. Alternatively, the conference call may be accessed through the following:

Conference ID: SNDX3Q23
Domestic Dial-in Number: 800-590-8290
International Dial-in Number: 240-690-8800
Live webcast: https://www.veracast.com/webcasts/syndax/events/SNDX3Q23.cfm

For those unable to participate in the conference call or webcast, a replay will be available on the Investors section of the Company’s website at www.syndax.com approximately 24 hours after the conference call and will be available for 90 days following the call.

Syndax Announces Updated Data Supporting Impressive Clinical Profile of Revumenib in Genetically-Defined Acute Leukemias to Be Presented at the 65th ASH Annual Meeting

On November 2, 2023 Syndax Pharmaceuticals (Nasdaq: SNDX), a clinical-stage biopharmaceutical company developing an innovative pipeline of cancer therapies, reported that updated data from multiple trials across its clinical program for revumenib, the Company’s highly selective, oral menin inhibitor, will be featured in three poster presentations at the 65th American Society of Hematology (ASH) (Free ASH Whitepaper) Annual Meeting being held December 9-12, 2023, in San Diego, California (Press release, Syndax, NOV 2, 2023, View Source [SID1234636797]). Copies of the abstracts are now available online via the ASH (Free ASH Whitepaper) website at www.hematology.org.

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"We look forward to sharing updated data, which we believe continue to underscore revumenib’s potential to serve as a first- and best-in-class treatment option for patients with KMT2Ar and mNPM1 acute leukemia across a variety of settings as monotherapy and in combination with standard of care agents," said Michael A. Metzger, Chief Executive Officer. "Following recently reported positive topline data from our pivotal AUGMENT-101 trial, and with an NDA filing on track for year-end, we are excited to finish what has thus far been a transformational year with several key data updates at ASH (Free ASH Whitepaper)."

Phase 1/2 AUGMENT-101 Trial

Pivotal Phase 2 Portion

The Company previously announced positive topline data from the protocol-defined pooled analysis of the pivotal Phase 2 portion of the AUGMENT-101 trial. The trial met its primary endpoint with a complete remission (CR) or a CR with partial hematological recovery (CRh) rate of 23% at the interim analysis of the pooled KMT2A-rearranged (KMT2Ar) acute myeloid leukemia (AML) and acute lymphoid leukemia (ALL) cohorts (p-value = 0.0036). Based on the Independent Data Monitoring Committee (IDMC) recommendation, the Company stopped the trial to further accrual in the KMT2Ar cohorts. Syndax continues to expect to submit a New Drug Application (NDA) for revumenib for the treatment of relapsed/refractory (R/R) KMT2Ar acute leukemia to the U.S. Food and Drug Administration by year-end under the Real-Time Oncology Review (RTOR) program. Full data from the pivotal portion of the study will be reported at the meeting.

Abstract Number: 2907
Title: Revumenib Monotherapy in Patients with Relapsed/Refractory KMT2Ar Acute Leukemias: Efficacy and Safety Results from the Augment-101 Phase 1/2 Study
Presenter: Ibrahim Aldoss, M.D.
Session Name: 616. Acute Myeloid Leukemias: Investigational Therapies, Excluding Transplantation and Cellular Immunotherapies: Poster II
Session Date: Sunday, December 10, 2023
Presentation Time: 6:00 – 8:00 p.m. PT

Phase 1/2 SAVE Study

The Phase 1/2 SAVE study is an investigator-sponsored trial of the all-oral regimen of revumenib, venetoclax, and ASTX727 (fixed-dose combination of decitabine and cedazuridine) in children and adults with R/R AML and mixed phenotype acute leukemias. As of a data cutoff date of July 20, 2023, eight patients were enrolled, with 2.5 median prior lines of therapy.

Seven of eight patients were response-evaluable, and all seven attained a morphologic remission (overall response rate of 100%). Three patients transitioned to hematopoietic stem-cell transplantation (HSCT) following response. Two patients are in continued remission and have started maintenance treatment with revumenib. Enrollment in the study is ongoing, and updated data will be presented at the meeting.

The combination was well tolerated in this relapsed and refractory population. Grade ≥3 treatment related adverse events (TRAEs) were febrile neutropenia (63%), decreased platelets count (25%), and decreased neutrophil count (25%). There was one dose-limiting toxicity (DLT), Grade 4 prolonged thrombocytopenia and neutropenia. There were no deaths due to TRAEs and no Grade 3 or higher QTc prolongation occurred.

Abstract Number: 58
Title: Early Results of the Phase I/II Study Investigating the All-Oral Combination of the Menin Inhibitor Revumenib (SNDX-5613) with Decitabine/Cedazuridine (ASTX727) and Venetoclax in Acute Myeloid Leukemia (SAVE)
Presenter: Ghayas Issa, M.D.
Session Name: 616. Acute Myeloid Leukemias: Investigational Therapies, Excluding Transplantation and Cellular Immunotherapies: Upcoming Therapies in Newly Diagnosed and Relapsed/Refractory AML
Session Date: Saturday, December 9, 2023
Session Time: 9:30 – 11:00 a.m. PT
Presentation Time: 10:15 a.m. PT

Revumenib Maintenance Therapy Post-HSCT

The ASH (Free ASH Whitepaper) abstract #4950 describes data from AUGMENT-101 Phase 1 patients who received revumenib maintenance therapy, including some ongoing for more than one year after HSCT. Revumenib duration of treatment in the maintenance setting at the time of this analysis ranged from 23 to 588 days, with treatment ongoing for five of the nine patients. CRc (CR + CRh + CRp + CRi + MLFS) was maintained in six of nine patients after HSCT and maintenance revumenib. One patient with reported minimal residual disease (MRD) after HSCT converted to MRD negative status following initiation of revumenib maintenance therapy. MRD negative remissions were maintained in five patients as of the data cutoff. Three patients remain on revumenib maintenance therapy for more than one-year post-transplant. The presentation will include longer follow-up of these patients and data from the patients in the pivotal portion of the AUGMENT-101 trial.

Abstract Number: 4950
Title: Revumenib Maintenance Therapy Following Revumenib-Induced Remission and Transplant
Presenter: Andrius Žučenka, M.D.
Session Name: 723. Allogeneic Transplantation: Long-term Follow-up and Disease Recurrence: Poster III
Session Date: Monday, December 11, 2023
Presentation Time: 6:00 – 8:00 p.m. PT

About Revumenib

Revumenib is a potent, selective, small molecule inhibitor of the menin-KMT2A binding interaction that is being developed for the treatment of KMT2A-rearranged, also known as mixed lineage leukemia rearranged or MLLr, acute leukemias including ALL and AML, and NPM1-mutant AML. Revumenib was granted Orphan Drug Designation by the FDA and European Commission for the treatment of patients with AML, and Fast Track designation by the FDA for the treatment of adult and pediatric patients with R/R acute leukemias harboring a KMT2A rearrangement or NPM1 mutation. Revumenib was granted BTD by the FDA for the treatment of adult and pediatric patients with R/R acute leukemia harboring a KMT2A rearrangement. Syndax expects to complete an NDA submission for KMT2Ar acute leukemia under the Oncology Center of Excellence Review RTOR Program by year-end 2023.

About the AUGMENT-101 trial

AUGMENT-101 is a Phase 1/2 open-label trial designed to evaluate the safety, tolerability, pharmacokinetics, and efficacy of orally administered revumenib. The Phase 1 dose escalation portion of AUGMENT-101 included two cohorts based on concomitant treatment with a strong CYP3A4 inhibitor. Arm A enrolled patients not receiving a strong CYP3A4 inhibitor, while Arm B enrolled patients receiving a strong CYP3A4 inhibitor. The Phase 2 pivotal portion of AUGMENT-101 has enrolled R/R patients across the following trial populations: patients with mNPM1 AML, patients with KMT2Ar AML, and patients with KMT2Ar ALL. Following the receipt of Breakthrough Therapy designation from the FDA for revumenib for the treatment of R/R acute leukemia harboring a KMT2A rearrangement, regardless of age or tumor type, and based on discussions with the FDA, the Company decided to pool data from the AUGMENT-101 cohorts enrolling R/R KMT2Ar AML and R/R KMT2Ar ALL. Based on the Independent Data Monitoring Committee (IDMC) recommendation at the protocol pre-specified interim analysis, the Company stopped the trial to further accrual in the KMT2A cohorts. The trial continues to enroll R/R patients with mNPM1 AML and expects to complete enrollment of this cohort by year-end. The primary endpoint for each of the cohorts is efficacy as measured by complete remission rate (CR + CRh) per protocol, with secondary endpoints including duration of response (DOR) and overall survival (OS).

About KMT2A (MLL) Rearranged Acute Leukemia

Rearrangements of the KMT2A (mixed lineage leukemia or MLL) gene give rise to KMT2Ar acute leukemia that is known to have a poor prognosis, with less than 25% of adult patients surviving past five years. KMT2A genes produce fusion proteins that require interaction with the protein called menin to drive leukemic cancer growth. Disruption of the menin-KMT2Ar interaction has been shown to halt the growth of KMT2Ar leukemic cells.

KMT2Ar acute leukemia can phenotypically appear as AML, ALL, or mixed phenotype acute leukemia (MPAL) and is routinely diagnosed through currently available cytogenetic or molecular diagnostic techniques. The median overall survival (OS) after standard of care first-line treatment, including intensive chemotherapy and transplant, is less than one year and the majority of patients suffer relapse within five years. Most R/R patients treated with second-line therapy relapse within the first year. With third line treatment or beyond, only a small percentage of patients achieve complete remission (CR), and the median OS is less than three months. There are currently no approved therapies indicated for KMT2A-rearranged acute leukemia.

About NPM1-Mutant Acute Myeloid Leukemia

NPM1-mutant AML, which is distinguished by mutations in the NPM1 gene that drive the leukemic phenotype, is the most common type of cytogenetically normal adult AML and represents approximately 30% of all adult AML cases. This subtype of AML has a five-year overall survival rate of approximately 50%. Similar to KMT2A-rearranged acute leukemia, NPM1-mutant AML is highly dependent on the expression of specific developmental genes shown to be negatively impacted by inhibitors of the menin-KMT2A interaction. NPM1-mutant AML is routinely diagnosed through currently available screening techniques. There are currently no approved therapies indicated for NPM1-mutant AML.

Syndax Announces Results from the Pivotal AGAVE-201 Trial of Axatilimab in Chronic Graft-Versus-Host Disease to Be Featured in Plenary Session at the 65th ASH Annual Meeting

On November 2, 2023 Syndax Pharmaceuticals (Nasdaq: SNDX), a clinical-stage biopharmaceutical company developing an innovative pipeline of cancer therapies, reported that results from the pivotal AGAVE-201 trial of axatilimab, an anti-CSF-1R antibody, in adult and pediatric patients with chronic graft-versus-host disease (cGVHD), will be featured during the Plenary Scientific Session at the 65th American Society of Hematology (ASH) (Free ASH Whitepaper) Annual Meeting being held December 9-12, 2023, in San Diego, California (Press release, Syndax, NOV 2, 2023, View Source [SID1234636796]).

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"Inclusion of AGAVE-201 in this year’s ASH (Free ASH Whitepaper) plenary session further supports our belief that axatilimab has the potential to serve as a highly differentiated therapeutic option for patients with chronic GVHD," said Michael A. Metzger, Chief Executive Officer. "We believe axatilimab’s best-in-category profile and unique mechanism of action positions it as an important addition to the chronic GVHD treatment armamentarium, if approved. We look forward to sharing the full dataset next month."

The Company and its partner, Incyte, previously announced positive topline data from the pivotal AGAVE-201 trial of axatilimab in patients with cGVHD following two or more prior lines of therapy. All three dose cohorts, 0.3 mg/kg every two weeks, 1.0 mg/kg every two weeks, and 3.0 mg/kg every four weeks, met the primary endpoint. The overall response rate within the first six months of treatment at the 0.3 mg/kg dose was 74%, and 60% of these patients were still responding at one year. Furthermore, axatilimab was generally well tolerated, and the most common adverse events were consistent with on-target effects and prior trials. Syndax and Incyte expect to submit a BLA filing by year-end 2023.

Abstract Number: 1
Title: Safety and Efficacy of Axatilimab at 3 Different Doses in Patients with Chronic Graft-Versus-Host Disease (AGAVE-201)
Presenter: Daniel Wolff, M.D.
Session Name: Plenary Scientific Session
Session Date: Sunday, December 10, 2023
Session Time: 2:00 – 4:00 PM PT
Presentation Time: 2:00 PM PT

Axatilimab Preclinical Data

In addition, preclinical data detailing the anti-inflammatory and anti-fibrotic mechanism through which axatilimab is thought to impact the disease process in cGVHD will be featured during a poster session.

Details for the presentation are as follows:

Abstract Number: 2540
Title: Axatilimab Ameliorates Inflammation and Fibrosis by Targeting the Macrophages in a Preclinical Model of Chronic GVHD
Presenter: Anamika Bajpai, Ph.D.
Session Name: 201. Granulocytes, Monocytes, and Macrophages: Poster II
Session Date: Sunday, December 10, 2023
Presentation Time: 6:00 – 8:00 PM PT

A copy of each abstract is now available online via the ASH (Free ASH Whitepaper) website at www.hematology.org.

About Chronic Graft-Versus-Host Disease

Chronic graft-versus-host disease (GVHD), an immune response of the donor-derived hematopoietic cells against recipient tissues, is a serious, potentially life-threatening complication of allogeneic hematopoietic stem cell transplantation which can last for years. Chronic GVHD is estimated to develop in approximately 40% of transplant recipients and affects approximately 14,000 patients in the U.S.1,2. Chronic GVHD typically manifests across multiple organ systems, with skin and mucosa being commonly involved, and is characterized by the development of fibrotic tissue3.

About Axatilimab

Axatilimab is an investigational monoclonal antibody that targets colony stimulating factor-1 receptor, or CSF-1R, a cell surface protein thought to control the survival and function of monocytes and macrophages. In pre-clinical models, inhibition of signaling through the CSF-1 receptor has been shown to reduce the number of disease-mediating macrophages along with their monocyte precursors, which has been shown to play a key role in the fibrotic disease process underlying diseases such as chronic GVHD and idiopathic pulmonary fibrosis (IPF). Axatilimab was granted Orphan Drug Designation by the U.S. Food and Drug Administration for the treatment of patients with chronic GVHD and IPF. In September 2021, Syndax and Incyte entered into an exclusive worldwide co-development and co-commercialization license agreement for axatilimab. Axatilimab is being developed under an exclusive worldwide license from UCB entered into between Syndax and UCB in 2016.

About AGAVE-201

The global Phase 2 AGAVE-201 dose-ranging trial evaluated the efficacy, safety, and tolerability of axatilimab in 241 adult and pediatric patients with recurrent or refractory active chronic GVHD whose disease had progressed after two prior therapies. Patients were randomized to one of three treatment groups that investigated a distinct dose of axatilimab administered at 0.3 mg/kg every two weeks, 1 mg/kg every two weeks or 3 mg/kg every four weeks. The trial’s primary endpoint is the proportion of patients in each dose group who achieved an objective response as defined by 2014 NIH Consensus Criteria for chronic GVHD by cycle 7 day 1. Secondary endpoints include duration of response, percent reduction in daily steroids dose, organ specific response rates and validated quality-of-life assessments using the Modified Lee Symptom Scale.

For more information about AGAVE-201, visit View Source