Ferring Advances Three Studies in ADSTILADRIN® (nadofaragene firadenovec-vncg) Clinical Trial Program

On November 3, 2024 Ferring Pharmaceuticals reported it has advanced three studies in the ADSTILADRIN (nadofaragene firadenovec-vncg) clinical trial program – two studies in patients with non-muscle invasive bladder cancer (NMIBC), and one study in patients with upper tract urothelial cancer (UTUC) (Press release, Ferring, DEC 3, 2024, View Source [SID1234648778]). The Company also announced researchers will present at the 25th Annual Meeting of the Society of Urologic Oncology (SUO) the study protocol for patients with intermediate-risk NMIBC and additional data from a Phase 3, open-label study demonstrating clinically meaningful cystectomy-free survival (CFS) after five years among patients with high-risk Bacillus Calmette-Guérin (BCG)-unresponsive NMIBC who achieved an initial complete response at three months with ADSTILADRIN.

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ADSTILADRIN is the first and only intravesical non-replicating gene therapy approved by the U.S. Food and Drug Administration (FDA) in patients with high-risk BCG-unresponsive NMIBC with carcinoma in situ (CIS) with or without papillary tumors (±Ta/T1).

Study sites in the U.S. were activated for two studies in the ABLE (ADSTILADRIN in BLadder CancEr) clinical trial program in NMIBC:

The three-arm, Phase 2 ABLE-22 (NCT06545955) trial is assessing the efficacy and safety of ADSTILADRIN as a monotherapy and as part of combination with chemotherapy or an immune checkpoint inhibitor for high-risk BCG-unresponsive NMIBC. Investigators in all three arms of the ABLE-22 study will have the option to re-induce appropriate patients who do not achieve a complete response to the initial single dose or combination regimen, an option that was not included in the original Phase 3 study.
The Phase 3B ABLE-32 (NCT06510374) trial is assessing the efficacy and safety of ADSTILADRIN in intermediate-risk NMIBC (IR NMIBC), for which there are no U.S. FDA-approved treatment options.
Ferring also initiated the LUNAR (Low-Grade UTUC Treated with Nadofaragene firadenovec Administered to Renal Pelvis) study (NCT06668493), a Phase 1-2, multi-center, multi-national, open-label, single-arm, repeat dose clinical trial evaluating the safety, tolerability, and efficacy of ADSTILADRIN instilled to the renal pelvis in patients with low-grade UTUC (LG UTUC).

"The availability of an innovative locally delivered gene therapy has the potential to be organ sparing for appropriate NMIBC and UTUC patients. The extension of the ADSTILADRIN clinical trial program – with a focus on IR NMIBC and LG UTUC where there is a desperate need for new treatments, and generation of mono and combination therapy data, including re-induction, for high-risk BCG-unresponsive NMIBC – is key to understanding how ADSTILADRIN may be able to help even more patients," said Joern Jakobsen, M.D., Ph.D., Vice President and Head of Global Research and Medical for Uro-Oncology and Urology, Ferring Pharmaceuticals. "We are pleased to have these studies underway to build on the evidence reported in the original Phase 3 study. Formalizing the collection of re-induction data in patients who do not achieve a complete response at their first three-month assessment also will add to our pursuit of strategies to potentially offer more patients the opportunity to preserve their bladder and avoid radical surgery."

About ADSTILADRIN Poster Presentations at SUO

ADSTILADRIN poster titles and presentation times at the SUO 2024 Annual Meeting, December 4-6, are:

Incidence and Pathologic Outcomes of Cystectomy in Patients With Bacillus Calmette-Guérin-Unresponsive Non-Muscle Invasive Bladder Cancer With Carcinoma In Situ Following Treatment With Nadofaragene Firadenovec-vncg, Poster #215, Friday, December 6 from 10:00-11:00 a.m. CST
ABLE-32: A Randomized, Controlled, Phase 3B Clinical Trial of Nadofaragene Firadenovec-vncg Versus Observation in Patients With Intermediate-Risk Non–Muscle-Invasive Bladder Cancer, Poster #232, Friday, December 6 from 1:45-2:45 p.m. CST
About the ADSTILADRIN Clinical Trial Program

Results from the final analysis of the 60-month follow-up data from the pivotal ADSTILADRIN Phase 3 clinical trial were announced earlier this year. Re-induction in patients who did not achieve a complete response at three months after a single initial dose was not included in the protocol.1

"The original Phase 3 study design was purposefully conservative and only allowed patients who demonstrated a complete response at three months to continue quarterly treatment with ADSTILADRIN as investigators confirmed the overall safety with low risk of progression of gene therapy in this patient population," said Colin P.N. Dinney, M.D., Chairman of the Department of Urology, Division of Surgery, University of Texas MD Anderson Cancer Center, Houston, and a lead investigator of the Phase 3 study. "The ADSTILADRIN Phase 3 clinical trial transformed our understanding of the treatment of patients with BCG-unresponsive NMIBC and paved the way to allow re-induction in subsequent studies."

Earlier this quarter, Ferring decided to prioritize collection of ADSTILADRIN re-induction data in patients with high-risk BCG-unresponsive NMIBC who did not have a complete response to the initial single dose of ADSTILADRIN through data sources within the clinical setting, including ABLE-22 and ABLE-41 (NCT06026332), and discontinued the previously announced ABLE-42 clinical trial. The ABLE-41 study – currently enrolling patients – is exploring early utilization, experiences, and outcomes of ADSTILADRIN in the routine care setting in high-risk BCG-unresponsive NMIBC patients.

"The approval of ADSTILADRIN and its successful launch has transformed the treatment landscape for BCG-unresponsive NMIBC patients, offering them new hope for durable bladder preservation. We hope to see efficacy together with the same low treatment burden and manageable safety profile for ADSTILADRIN in IR NMIBC and as part of combination therapy in BCG-unresponsive NMIBC," said Bipin Dalmia, Global Head of Uro-Oncology & Urology Franchise, Ferring Pharmaceuticals. "Expanding our program within NMIBC and also to UTUC with the LUNAR study is another step forward in our leadership journey to establish ADSTILADRIN as the new standard of care and the backbone therapy for patients across the urothelial cancer disease spectrum."

About the ABLE and LUNAR Clinical Trials

ABLE-22 is a Phase 2, randomized, multi-center, open-label three-arm trial evaluating the efficacy and safety of ADSTILADRIN as a monotherapy or in combination with chemotherapy (gemcitabine and docetaxel) or an immune checkpoint inhibitor (pembrolizumab) in adult patients with high-grade BCG-unresponsive NMIBC. High-grade tumors are more likely to grow and spread quickly. The study’s primary endpoint is a complete response (defined as absence of low- and high-grade disease) at month 3 (or month 6 for re-induced patients). Appropriate patients in all three treatment arms of ABLE-22 who do not have a complete response to the first three-month assessment will have the potential to receive re-induction with a second quarterly dose of ADSTILADRIN.
ABLE-32 is a Phase 3B, randomized, controlled trial assessing the potential efficacy and safety of ADSTILADRIN in patients with IR NMIBC. More than 450 participants from 100 global sites are expected to be enrolled and will either receive quarterly doses of ADSTILADRIN or undergo continued observation following transurethral resection of bladder tumor (TURBT) within 60 days prior to randomization. The primary efficacy endpoint is recurrence-free survival (RFS), from baseline to first documented recurrence, progression, or death, whichever occurs first during the treatment period.
ABLE-41 is an ongoing, multi-center, non-interventional, real-world evidence (RWE) study following patients with NMIBC aged 18 years or older who are being treated with ADSTILADRIN in a clinical setting and had not previously received this therapy in a clinical trial. The study is exploring early utilization, experiences, and outcomes of ADSTILADRIN in the routine care setting, including re-induction with a second quarterly dose in patients without a complete response to the initial single dose. The first patient was enrolled in September 2023.
LUNAR is a Phase 1-2 single-arm, open label trial evaluating the safety, tolerability, and efficacy of ADSTILADRIN in patients with low-grade UTUC. A safety lead-in period will be conducted for the first six patients. Absence of UTUC in the renal pelvis at months 3 or 6 will be defined as a complete response. Duration of response up to month 30 will be defined as the time from first achieved complete response to disease recurrence, progression to high-grade disease or disease-specific death, whichever occurs first.
About ADSTILADRIN

ADSTILADRIN (nadofaragene firadenovec-vncg) is the first and only FDA-approved intravesical non-replicating gene-therapy for the treatment of adult patients with high-risk Bacillus Calmette-Guérin (BCG)-unresponsive non-muscle invasive bladder cancer (NMIBC) with carcinoma in situ (CIS) with or without papillary tumors. It is a non-replicating adenovirus vector-based therapy containing the gene interferon alfa-2b, administered locally as a monotherapy by catheter directly into the bladder once every three months. The vector enters the cells of the bladder wall, releasing the active gene and causing the bladder’s cell walls to secrete high and transient local expression of interferon alfa-2b protein, a naturally occurring protein the body uses to fight cancer. This approach essentially turns the bladder wall cells into interferon microfactories, enhancing the body’s own natural defenses against the cancer.

ADSTILADRIN has been studied in a clinical trial program that includes 157 patients with high-risk, BCG-unresponsive NMIBC who had been treated with adequate BCG previously and did not see benefit from additional BCG treatment (full inclusion criteria published on clinicaltrials.gov: NCT02773849).2

Ferring is leading the future in uro-oncology treatment with ADSTILADRIN at the center, while expanding access with the support of new, state-of-the-art manufacturing facilities. As announced in January 2024, ADSTILADRIN is fully available and accessible in the U.S. ADSTILADRIN has confirmed 99 percent coverage for commercial and government-insured patients. As of April 1, 2024, in accordance with the Centers for Medicare and Medicaid Services (CMS), ADSTILADRIN established an Average Sales Price (ASP). Since the establishment of ASP, all covered claims submitted for reimbursement have received payment within an average of 25 days.3

Ferring is committed to investing in novel therapies, developing life-changing solutions that address unmet medical needs, and aiding the uro-oncology community in helping patients live better lives. More information is available in the U.S. at the dedicated Ferring Uro-Oncology channel on LinkedIn.

About Non-Muscle Invasive Bladder Cancer (NMIBC)

NMIBC is a form of bladder cancer that is found in the inner layer cells of the bladder and does not invade into or beyond the muscle wall.4 In the United States, bladder cancer is the sixth most common cancer,5 fourth among men,6 and it is estimated that there will be approximately 83,190 new cases of bladder cancer in the U.S. in 2024.6 Historically, 75% of bladder cancer presents as NMIBC.7 In patients with high-risk NMIBC, intravesical BCG remains the first-line standard-of-care. However, approximately one third of patients with NMIBC will not respond to BCG therapy and 50% of those with an initial response will experience recurrence or progression of their disease.8 Current treatment options for BCG-unresponsive patients are very limited, and National Comprehensive Cancer Network (NCCN) guidelines recommend cystectomy (partial or complete removal of the bladder).9

About Low-Grade Upper Tract Urothelial Cancer (UTUC)

UTUC accounts for about 10 percent of all urothelial cancers – cancer of the lining within the kidneys, bladder, or ureters – with the majority occurring in the lower tract or bladder.10 Clinicians use several standardized assessment and clinical staging methods to risk-stratify patients into "low" or "high" risk for progression to identify patients who are most likely to benefit from kidney-sparing treatment.10 Tumors that block the ureter or kidney can cause hydronephrosis (swelling of the kidney), infections, and impairment of kidney function.10 Low-grade tumors comprise all low-risk and some high-risk tumors in UTUC with management goals including treatment of visible tumors and preservation of the urinary tract.10 There is an estimated total incidence of just over 7,000 new UTUC cases each year in the U.S.,10 and the prevalence appears to be increasing.11

INDICATION

ADSTILADRIN is a non-replicating adenoviral vector-based gene therapy indicated for the treatment of adult patients with high-risk Bacillus Calmette-Guérin (BCG)-unresponsive non-muscle invasive bladder cancer (NMIBC) with carcinoma in situ (CIS) with or without papillary tumors.

IMPORTANT SAFETY INFORMATION

CONTRAINDICATIONS: ADSTILADRIN is contraindicated in patients with prior hypersensitivity reactions to interferon alfa or to any component of the product.

WARNINGS AND PRECAUTIONS:

Risk with delayed cystectomy: Delaying cystectomy in patients with BCG-unresponsive CIS could lead to development of muscle invasive or metastatic bladder cancer, which can be lethal. If patients with CIS do not have a complete response to treatment after 3 months or if CIS recurs, consider cystectomy.
Risk of disseminated adenovirus infection: Persons who are immunocompromised or immunodeficient may be at risk for disseminated infection from ADSTILADRIN due to low levels of replication-competent adenovirus. Avoid ADSTILADRIN exposure to immunocompromised or immunodeficient individuals.
DOSAGE AND ADMINISTRATION: Administer ADSTILADRIN by intravesical instillation only. ADSTILADRIN is not for intravenous use, topical use, or oral administration.

USE IN SPECIFIC POPULATIONS: Advise females of reproductive potential to use effective contraception during ADSTILADRIN treatment and for 6 months after the last dose. Advise male patients with female partners of reproductive potential to use effective contraception during ADSTILADRIN treatment and for 3 months after the last dose.

ADVERSE REACTIONS: The most common (>10%) adverse reactions, including laboratory abnormalities (>15%), were glucose increased, instillation site discharge, triglycerides increased, fatigue, bladder spasm, micturition (urination urgency), creatinine increased, hematuria (blood in urine), phosphate decreased, chills, pyrexia (fever), and dysuria (painful urination).

You are encouraged to report negative side effects of prescription drugs to FDA. Visit www.FDA.gov/medwatch or call 1-800-332-1088. You may also contact Ferring Pharmaceuticals at 1-888-FERRING.

MAIA Biotechnology Announces Expansion of Clinical Supply Agreement with Regeneron for Phase 2 Trial in Non-Small Cell Lung Cancer

On December 3, 2024 MAIA Biotechnology, Inc., (NYSE American: MAIA) ("MAIA", the "Company"), a clinical-stage biopharmaceutical company developing targeted immunotherapies for cancer, reported that it has amended the 2021 clinical supply agreement with Regeneron for the expansion portion of THIO-101, its Phase 2 clinical trial evaluating THIO in sequential administration with cemiplimab (Libtayo) (Press release, MAIA Biotechnology, DEC 3, 2024, View Source [SID1234648777]). The new expansion will further assess the efficacy of MAIA’s lead asset, THIO, sequenced with immune checkpoint inhibitor (CPI) Libtayo (cemiplimab) for advanced non-small cell lung cancer (NSCLC) patients receiving third-line therapy who were resistant to previous checkpoint inhibitor treatments and chemotherapy.

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The original 2021 agreement between MAIA and Regeneron was designed to supply the original THIO-101 trial through the dose selection and safety evaluation process. The THIO-101 trial has been amended and expanded to further evaluate efficacy at the target dose and target third line patient population.

"In keeping with our clinical strategy for THIO, we look forward to continuing our collaboration with Regeneron to evaluate THIO’s anti-tumor activity when followed by PD-(L)1 inhibition. So far, THIO-101 has demonstrated favorable disease control, progression free survival, overall response rates, and we remain on track to achieve our overall survival goals," said MAIA Chairman and Chief Executive Officer Vlad Vitoc, M.D.

Under terms of the amended clinical supply agreement, MAIA continues to sponsor THIO-101 and Regeneron will provide Libtayo for the treatment of all patients in the trial including the additional patients in the THIO 101 expansion. MAIA holds an exclusive worldwide patent license to develop and commercialize THIO.

MAIA expects to start enrolling new patients in the expansion of THIO-101 in the near future.

The company continues to evaluate its regulatory strategy and believes that there could be an opportunity for an accelerated approval in the United States based on the ultimate outcome of the ongoing THIO 101 trial.

About THIO

THIO (6-thio-dG or 6-thio-2’-deoxyguanosine) is a first-in-class investigational telomere-targeting agent currently in clinical development to evaluate its activity in Non-Small Cell Lung Cancer (NSCLC). Telomeres, along with the enzyme telomerase, play a fundamental role in the survival of cancer cells and their resistance to current therapies. The modified nucleotide 6-thio-2’-deoxyguanosine (THIO) induces telomerase-dependent telomeric DNA modification, DNA damage responses, and selective cancer cell death. THIO-damaged telomeric fragments accumulate in cytosolic micronuclei and activates both innate (cGAS/STING) and adaptive (T-cell) immune responses. The sequential treatment with THIO followed by PD-(L)1 inhibitors resulted in profound and persistent tumor regression in advanced, in vivo cancer models by induction of cancer type–specific immune memory. THIO is presently developed as a second or later line of treatment for NSCLC for patients that have progressed beyond the standard-of-care regimen of existing checkpoint inhibitors.

About THIO-101, a Phase 2 Clinical Trial

THIO-101 is a multicenter, open-label, dose finding Phase 2 clinical trial. It is the first trial designed to evaluate THIO’s anti-tumor activity when followed by PD-(L)1 inhibition. The trial is testing the hypothesis that low doses of THIO administered prior to cemiplimab (Libtayo) will enhance and prolong immune response in patients with advanced NSCLC who previously did not respond or developed resistance and progressed after first-line treatment regimen containing another checkpoint inhibitor. The trial design has two primary objectives: (1) to evaluate the safety and tolerability of THIO administered as an anticancer compound and a priming immune activator (2) to assess the clinical efficacy of THIO using Overall Response Rate (ORR) as the primary clinical endpoint. Treatment with THIO followed by cemiplimab (Libtayo) has been generally well-tolerated to date in a heavily pre-treated population. For more information on this Phase II trial, please visit ClinicalTrials.gov using the identifier NCT05208944.

Kairos Pharma Adds City of Hope Cancer Center for Phase 2 ENV105 Clinical Trial

On December 3, 2024 Kairos Pharma Ltd. (NYSE American: KAPA), a clinical-stage biopharmaceutical company developing therapies to surmount current cancer drug resistance and immune suppression, reported the addition of City of Hope Cancer Center in Duarte, California to the Phase 2 clinical trial for ENV105 for castrate-resistant prostate cancer patients (Press release, Kairos Pharma, DEC 3, 2024, View Source [SID1234648776]).

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City of Hope Cancer Center is the first of several planned new centers to be added in the coming weeks to support the Company’s randomized trial for patients receiving either apalutamide or apalutamide+ENV105 combination therapy. The additional centers allow Kairos Pharma to test ENV105 in a broader patient population to identify blood markers that could help select patients expected to benefit most from ENV105 treatment. The trial is supported by Kairos Pharma Ltd. and a grant from the National Cancer Institute (NCI).

Kairos Pharma Chief Scientific Officer Dr. Neil Bhowmick said, "The preclinical findings suggest that ENV105 blocks a central mechanism of hormone therapy resistance. We are encouraged that we have multiple peer-reviewed articles in addition to receiving an NCI grant that supports the solid science behind this trial. We are fortunate to be working with the talented and experienced oncologists at City of Hope, who will be key participants in a trial that may provide patients with a new alternative to the current standard of care."

Kairos CEO Dr. John Yu added, "This is an important milestone in our mission to develop first-in-class approaches to address the inevitable resistance that develops in prostate cancer patients receiving hormone therapy, as it provides additional validation for the science behind ENV105. City of Hope is a first-class research institution, and we look forward to our continued collaboration with them."

Janux Therapeutics Announces Proposed Public Offering

On December 3, 2024 Janux Therapeutics, Inc. (Nasdaq: JANX) (Janux), a clinical-stage biopharmaceutical company developing a broad pipeline of novel immunotherapies by applying its proprietary technology to its Tumor Activated T Cell Engager (TRACTr) and Tumor Activated Immunomodulator (TRACIr) platforms, reported that it has commenced an underwritten public offering of $300.0 million of shares of its common stock or, in lieu of common stock issued to certain investors that so choose, pre-funded warrants to purchase shares of its common stock (Press release, Janux Therapeutics, DEC 3, 2024, View Source [SID1234648775]). In addition, Janux expects to grant the underwriters a 30-day option to purchase up to an additional $45.0 million of shares of its common stock at the public offering price, less the underwriting discounts and commissions. All of the securities to be sold in the offering are to be sold by Janux. The offering is subject to market and other conditions, and there can be no assurance as to whether or when the offering may be completed, or the actual size or terms of the offering.

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BofA Securities, TD Cowen, Stifel, Cantor and William Blair are acting as joint book-running managers for the offering. Wedbush PacGrow, LifeSci Capital, BTIG and Jones are acting as co-managers for the offering.

The Company intends to use the net proceeds from the offering to advance clinical development of its internal product pipeline and for general corporate purposes.

The securities are being offered by the company pursuant to a Registration Statement on Form S-3 filed with the Securities and Exchange Commission (SEC) that became automatically effective upon filing. A preliminary prospectus supplement and accompanying prospectus relating to the offering will be filed with the SEC and will be available on the SEC’s website, located at www.sec.gov. Copies of the preliminary prospectus supplement and the accompanying prospectus relating to this offering may be obtained, when available, from: BofA Securities, NC1-022-02-25, 201 North Tryon Street, Charlotte, North Carolina 28255-0001, Attention: Prospectus Department, or by email at [email protected]; TD Securities (USA) LLC, 1 Vanderbilt Avenue, New York, New York 10017, by telephone at (855) 495-9846 or by email at [email protected]; Stifel, Nicolaus & Company, Incorporated, Attention: Syndicate, One Montgomery Street, Suite 3700, San Francisco, California 94104, by telephone at (415) 364-2720, or by email at [email protected]; Cantor Fitzgerald & Co., Attention: Capital Markets, 110 East 59th Street, 6th Floor, New York, New York 10022, or by email at [email protected]; or William Blair & Company, L.L.C., Attention: Prospectus Department, 150 North Riverside Plaza, Chicago, Illinois 60606, by telephone at (800) 621-0687 or by email at [email protected].

This press release shall not constitute an offer to sell or the solicitation of an offer to buy these securities, nor shall there be any sale of these securities in any state or other jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of any such state or other jurisdiction.

K36 Therapeutics Announces Multiple Poster Presentations Highlighting the First Clinical Data for KTX-1001 and Other Developmental Compounds at the 66th American Society of Hematology (ASH) Annual Meeting

On December 3, 2024 K36 Therapeutics, Inc. ("K36"), a clinical-stage biotech company focused on developing its first-in-class MMSET / NSD2 inhibitor KTX-1001 for t(4;14) multiple myeloma, reported upcoming poster presentations outlining data from its KTX-1001 and KTX-1029 programs at the 66th American Society of Hematology (ASH) (Free ASH Whitepaper) Annual Meeting and Exposition held December 6-10, 2024 in San Diego, California (Press release, K36 Therapeutics, DEC 3, 2024, View Source [SID1234648774]).

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The KTX-1001 presentations will feature the first results from the dose escalation part of the Phase 1 study and characterization of the asset’s biochemical activity. A third poster will characterize the in vitro and in vivo efficacy of KTX-1029, a novel, potent, selective inhibitor of MMSET. Taken together, the results collectively support the mechanism of action and rationale for targeting MMSET in patients with multiple myeloma.

"I am excited to report on the clinical progress of KTX-1001, a potent, oral MMSET inhibitor being developed for multiple myeloma patients with translocation t(4;14). The dose-escalation phase of the clinical trial demonstrates an increase in KTX-1001 exposure by dose and a corresponding decrease in H3K36me2 biomarker, reflecting clear target engagement that is consistent with preclinical models" said Pierre Bories, MD, PhD, Hematologist, Early Phase Clinical Research Unit Hematology and Clinical Research, Onco-Occitanie Network, Toulouse University Cancer Institute Oncopole.

"We’ve seen significant momentum in enrollment since our first presentation at ASH (Free ASH Whitepaper) last year, highlighting the opportunity for KTX-1001 to meet the unmet need for oral therapies in high-risk patients," said Terry Connolly, Ph.D., President and Chief Executive Officer of K36. "I want to thank the patients, investigators, and their teams for their commitment to generating crucial data from our trial. KTX-1001 has shown a favorable tolerability profile, and promising clinical activity reinforcing its potential as a first in class targeted therapy for t(4;14) multiple myeloma patients who have exhausted standard treatments."

Additional presentation details are outlined below:

Title: First Results from the Dose Escalation Part of the Phase 1 Study of KTX1001, an Oral, First-in-Class, Potent Inhibitor of MMSET/NSD2 for Relapsed/Refractory Multiple Myeloma (RRMM)
Poster Number: 3370
Session Name: 654. Multiple Myeloma: Pharmacologic Therapies: Poster II
Date & Time: Sunday, December 8, 2024, 6:00 PM-8:00 PM PST

"This trial highlights the potential of personalized oral therapies like KTX-1001 to treat multiple myeloma with a targeted medicine designed for high-risk patients," said Benjamin Winograd, M.D. Ph.D., K36’s Chief Medical Officer. "The safety profile of the oral therapy at relevant doses allows us to move forward with the dose expansion phase of the trial. In 2025, we will combine our oral investigational drug with standard of care agents, starting with a proteasome inhibitor and IMiDS to continue the development of KTX-1001 for the treatment of t(4;14) patients"

Title: Characterization of the Biochemical Activity of KTX-1001, a Selective Small Molecule NSD2 Inhibitor, in Surface Plasmon Resonance (SPR)
Poster Number: 2205
Session Name: 802. Chemical Biology and Experimental Therapeutics
Date & Time: Saturday, December 7, 2024, 5:30 PM-7:30 PM PST

Describes a novel method for utilizing surface plasmon resonance (SPR) to interrogate the binding of KTX-1001 to the SET domain of MMSET.
These data demonstrate that one of the ways that KTX-1001 reduces H3K36me2 is by displacing S-adenosyl methionine (SAM), the cofactor responsible for donating the methyl groups to H3K36.
Title: KTX-1029, a Potent, Selective MMSET/NSD2 Inhibitor Is Effective in t(4;14) Multiple Myeloma Preclinical Models
Poster Number: 1878
Session Name: 651. Multiple Myeloma and Plasma Cell Dyscrasias
Date & Time: Saturday, December 7, 2024, 5:30 PM-7:30 PM PST

Describes the in vitro and in vivo efficacy of KTX-1029, a novel, potent, selective inhibitor of MMSET. KTX-1029 demonstrated efficacy in MM preclinical models as a single agent and in combination with the proteasome inhibitors bortezomib and carfilzomib in both PI-sensitive and -resistant settings.
The data generated with KTX-1029 compliments the data generated with the company’s orally-available clinical candidate, KTX-1001 and adds to the body of evidence for targeting MMSET in multiple myeloma patients with t(4;14) and for further exploration of combination regimens with multiple myeloma standards of care.
Full abstracts can be found at the ASH (Free ASH Whitepaper) Annual Meeting website at www.Hematology.org.

About KTX-1001
KTX-1001 is a novel, first-in-class, potent, and selective methyltransferase inhibitor of the catalytic activity of MMSET/NSD2. It is an orally administered small molecule developed initially for the treatment of relapsed and refractory multiple myeloma, with a focus on patients with the t(4;14) translocation. This inhibitor offers a promising avenue for addressing this challenging high risk patient population.

About the KTX-1001 Phase 1 Clinical Trial
The Phase 1 clinical trial is a single-arm, open-label study in subjects with relapsed and refractory multiple myeloma. It is a multi-part clinical trial with dose escalation followed by an expansion cohort in patients with the genetic translocation t(4;14) to evaluate the safety, tolerability, and preliminary efficacy of different doses of KTX-1001. For more information and participating centers visit NCT05651932.