Antengene Presents Promising Results from Four Preclinical Studies at the 2022 Society for Immunotherapy of Cancer Annual Meeting

On November 10, 2022 Antengene Corporation Limited ("Antengene" SEHK: 6996.HK), a leading innovative, commercial-stage global biopharmaceutical company dedicated to discovering, developing and commercializing first-in-class and/or best-in-class therapeutics in hematology and oncology, reported that it has presented posters from preclinical studies of four pipeline assets, ATG-031, ATG-101, ATG-018, and ATG-027 at the 37th Society for Immunotherapy of Cancer (SITC) (Free SITC Whitepaper) Annual Meeting (SITC 2022), taking place on November 8-12, in Boston, Massachusetts (the United States), via in person/virtual attendance (Press release, Antengene, NOV 10, 2022, View Source [SID1234623860]). As the world’s largest and most anticipated academic gathering in the field of immuno-oncology, the SITC (Free SITC Whitepaper) Annual Meeting is designed to promote scientific exchanges and cooperation for improving treatment outcomes for cancer patients.

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"We are very pleased to share this segment of our early stage portfolio with the oncology community. This year’s presentations highlight the breadth of Antengene’s internal research capabilities, evidenced by agents based on different modalities, including small molecules, monoclonal antibodies and bi-specific antibodies," said Dr. Jay Mei, Antengene’s Founder, Chairman and CEO. "These programs have shown promising data across a range of cell-based assays to confirm target affinity, appropriate in vitro cell and immune activation and strong in vivo anti-tumor activity, with differentiated performance compared to bench-mark compounds, as well as our growing expertise in the identification and validation of biomarkers and companion diagnostics to guide and support clinical development."

Oral Presentation

ATG-031 (anti-CD24 monoclonal antibody)

Title: ATG-031, a first-in-class anti-CD24 antibody, showed potent preclinical anti-tumor efficacy by blocking "don’t-eat-me" signal

Abstract#: 482

By overexpressing anti-phagocytic surface proteins, often known as"don’t eat me" signals, cancer cells can evade macrophage-mediated elimination. CD24, a GPI-anchored, highly glycosylated surface protein interacting with Siglec-10 on innate immune cells, was reported to be a novel "don’t eat me" protein. CD24 is over-expressed in multiple tumor types. And unlike CD47, another well-known "don’t eat me" target, CD24 is not expressed on human red blood cells (hRBC). ATG-031 is a first-in-class, humanized anti-CD24 antibody. ATG-031 potently binds to CD24-postive tumor cells, while showed no binding with hRBC. ATG-031 blocks the interaction between CD24 and Siglec-10 and inducesd potent macrophage-dependent tumor cell phagocytosis. Upon phagocytosis, M2 macrophages start to release M1-like cytokines suggesting a repolarization from M2 macrophages to M1 macrophages. ATG-031 significantly inhibited in vivo tumor growth and demonstrated synergism with immune checkpoint inhibitor (ICI) and chemotherapies. ATG-031 was well tolerated in preclinical toxicity studies in non-human primates. Also, a companion diagnostic antibody has been developed by Antengene as a patient selection tool.

In conclusion, these findings support further evaluation of ATG-031 in mono or combination therapy settings for patients with solid tumors or hematologic cancers. The Company intends to file an IND for ATG-031 in H1:2023.

Poster Presentations

ATG-101 (PD-L1/4-1BB bispecific antibody)

Title: ATG-101, a tetravalent PD-L1×4-1BB BsAb, demonstrates potent in vivo anti-tumor efficacy in Immune Checkpoint Inhibitor (ICI)-resistant or refractory mouse tumor models

Abstract#: 1150

ATG-101’s anti-"ICI-resistant or refractory tumors" activity was assessed in both in vitro and in vivo models. In the presence of PD-L1 positive cells, ATG-101 enhanced the IL2 and INF-γ production by the terminally exhausted T cells and progenitor exhausted T cells. The in vivo efficacy of ATG-101 was tested in 4-1BB humanized mouse bearing syngeneic B16F10 (Melanoma), EL4 (Lymphoma) or Pan02 (Pancreatic) tumors, all of which have been suggested to be ICI-resistant. ATG-101 was well tolerated and significantly inhibited tumor growth compared with control group. Furthermore, ATG-101 induced growth inhibition or regression in MC38 tumors that had progressed on atezolizumab, revealing a significant survival advantage over atezolizumab or the control group. TIL analysis suggested that ATG-101 increases the infiltration, proliferation and activation of CD8+ T cells, the infiltration of natural killer T cells and the CD8+/Treg ratio in TILs.

In conclusion, by cross linking 4-1BB with PD-L1, ATG-101 has the potential to activate exhausted T-cells and overcome ICI resistance. As the first PD-L1/4-1BB bispecific antibody entering clinical development in Australia, ATG-101 is currently being evaluated in a Phase I study in Australia, China, and the U.S.

ATG-018 (ATR small molecule inhibitor)

Title: Discovery of blood pharmacodynamic biomarkers for ATR inhibitors

Abstract#: 76

Antengene presented the results of studies to identify validated PD biomarkers based on Antengene ATR’s inhibitor, ATG-018. To demonstrate this, Antengene first evaluated gene expression changes induced by ATG-018 on human peripheral blood mononuclear cells (PBMCs) by assessing PBMCs from three donor samples treated with different concentrations of ATG-018. NanoString technology was used to develop a high throughput gene expression profile at the transcriptome level. This work was validated by treating wild type mice with ATG-018 to define the expression of PD markers in plasma using Meso Scale Discovery’s technology. Through these studies, results showed that ATG-018 inhibited the expression of a set of chemokine genes (CCL2, CCL3/1 and CCL4) and that they could be detected in unmanipulated blood samples.

In conclusion, the expression of three chemokine genes that were inhibited by ATG-018 could have potential as clinically-relevant peripheral blood PD biomarkers to guide the development of ATG-018 and other ATR inhibitors in the clinic.

ATG-027 (B7H3/PD-L1 bispecific antibody)

Title: ATG-027, a first-in-class B7-H3/PD-L1 bispecific antibody, shows potent T cell activation capability and in vivo anti-tumor efficacy

Abstract#: 1397

ATG-027 is a B7-H3/PD-L1 bispecific antibody which enables key immune effects including immune checkpoint blocking, antibody-dependent cytotoxicity (ADCC) andand antibody-dependent cellular phagocytosis (ADCP). In the poster, results were presented from in vitro studies to evaluate the immune function and in vivo studies to assess the anti-tumor efficacy of ATG-027 using mice bearing syngeneic colorectal cancer cells overexpressing human B7-H3. Results showed that ATG-027 binds to B7-H3 and PD-L1 expressing cells with high affinity. ATG-027 demonstrated higher ADCC and ADCP activity compared with anti-PD-L1 and anti-B7-H3 parental antibodies. Interestingly, in a Mixed Lymphocyte Reaction (MLR) experiment to assess the T cell activation, ATG-027 and the B7-H3 parental antibody induced robust IL-2 and IFNγ production, indicating T cell activating function of tested antibodies. Besides, ATG-027 can potently block PD1/PD-L1 interaction. At in vivo studies, ATG-027 demonstrated superior anti-tumor activity compared to individual parental antibodies and induced tumor shrinkage or complete regression.

In conclusion, ATG-027’s dual functionality, from binding both B7-H3 and PD-L1, shows promising anti-tumor efficacy in preclinical models by enabling T-cell activation and powerful immune properties, ADCC and ADCP.

Harbour BioMed Enters into a License and Collaboration Agreement with Moderna

On November 10, 2022 Harbour BioMed (the "Company", HKEX: 02142) reported that Nona Biosciences, a subsidiary wholly owned by the Company, had entered into a license and collaboration agreement with ModernaTX, Inc. (NASDAQ: MRNA), a global biotechnology company pioneering messenger RNA (mRNA) therapeutics and vaccines. The strategic collaboration will focus on discovering and developing nucleic acid-based immunotherapies for select oncology targets using the Company’s proprietary heavy chain only antibody discovery platform (HCAb) (Press release, Harbour BioMed, NOV 10, 2022, View Source [SID1234623859]).

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Upon the execution of the agreement and subject to terms and conditions thereof, Moderna will be granted an exclusive sub-licensable license to exploit a panel of sequences against multiple targets, derived from the Company’s HCAb platform, to develop products using nucleic acids. Moderna will assume full responsibility for all upcoming development, manufacturing, regulatory, and commercialization activities. Moderna would also be granted an option to obtain an exclusive sub-licensable license to exploit sequences against additional targets. Pursuant to the agreement, Nona Biosciences shall receive an upfront payment, and potential milestone payments based on pending achievement of certain regulatory, development, and sales milestones, and tiered royalties.

"We are very pleased and proud to collaborate with Moderna, a pioneering industry leader in the field of mRNA technology," said Dr. Jingsong Wang, Founder, Chairman, and CEO of Harbour BioMed. "This agreement marks a significant milestone in the Company’s business development, validating the potential of the Company’s technology platforms and innovation capabilities. Following a series of business achievements delivered on a global basis, we will continue to open up our technology platforms and talent and experience to innovators to empower global biotherapeutic innovation."

About HCAb

HCAb’s patented technology generates novel "heavy chain only" antibodies, which are about half the size of a typical IgG. These antibodies carry IgG-like PK properties and Fc-domain functions without the need for additional engineering or humanization. Lack of light chain also minimizes the issue of light chain mispairing and heterodimerization. These characteristics enable the development of products with attributes not achievable by conventional antibody platforms. In addition, HCAb-derived multiple novel therapeutic antibody modalities, including single-domain antibodies, bi-, and multi-specifics, antibody-drug conjugates, CAR-Ts, or VH domain-derived diagnostic or therapeutic products, are also achievable using this platform.

Monte Rosa Therapeutics Reports Third Quarter 2022 Financial Results and Business Updates

On November 10, 2022 Monte Rosa Therapeutics, Inc. (NASDAQ: GLUE), a biotechnology company developing novel molecular glue degrader (MGD)-based medicines, reported business highlights and financial results for the third quarter, ended September 30, 2022 (Press release, Monte Rosa Therapeutics, NOV 10, 2022, View Source [SID1234623832]).

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"Throughout 2022, we have made important strides in advancing our QuEENTM platform and our portfolio of MGDs derived from it, including our GSPT1 degrader MRT-2359. The FDA’s clearance of our first investigational new drug application, along with the recent initiation of patient dosing of MRT-2359 in our clinical trial in MYC-driven tumors, serve as strong validation of our platform, the quality of our team and the level of innovation we are bringing to the field," said Markus Warmuth, M.D., CEO of Monte Rosa. "We are continually progressing toward our goal of discovering and developing MGDs into a new generation of precision medicines for patients who currently have no real alternatives. With a strong cash position and investor support, we are well positioned to continue to execute on our first clinical program, as well as advance additional discovery programs through lead optimization."

THIRD QUARTER 2022 & RECENT HIGHLIGHTS

Received a Study May Proceed Letter from the U.S. Food and Drug Administration (FDA) to begin a Phase 1/2 clinical trial for MRT‑2359, a potent, selective and orally bioavailable GSPT1-directed MGD

Recently initiated patient dosing with MRT-2359, evaluating the treatment of MYC-driven solid tumors, including lung cancer

Advanced VAV1 degrader program into lead optimization; VAV1 plays a key role in T-cell and B-cell development and activation and is a highly validated target for multiple autoimmune diseases, as well as several types of lymphoma

Continued progress of CDK2 and NEK7 programs toward development candidate nominations

Entered into collaboration with Professor Sereina Riniker, Ph.D., (ETH Zürich) to integrate molecular dynamics into Monte Rosa’s AI/ML engine for target identification and virtual screening

Gave multiple presentations at the 5th Annual Targeted Protein Degradation Summit in October in Boston, which included new and updated preclinical data supporting development of MRT-2359 in MYC-driven lung cancer, and novel AI applications for the discovery of MGDs
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Presented overview of development of MRT-2359 as a GSPT1-directed MGD to target MYC-driven malignancies at the 34th EORTC-NCI-AACR (Free EORTC-NCI-AACR Whitepaper) Symposium on Oct. 28 in Barcelona, Spain

UPCOMING INVESTOR EVENTS

Monte Rosa will be participating in the following upcoming investor conferences:

Jefferies 13th Annual Global Healthcare Conference, Nov. 15-17, London

Piper Sandler 34th Annual Healthcare Conference, Nov. 29-Dec. 1, New York

41st Annual J.P. Morgan Health Care Conference, Jan. 9-12, 2023, San Francisco

THIRD QUARTER 2022 FINANCIAL RESULTS

Research and Development (R&D) Expenses: R&D expenses for the third quarter of 2022 were $21.3 million, compared to $15.1 million for the third quarter of 2021. These increases were due to the expansion of R&D activities, including the advancement of MRT-2359 toward clinical development and the development of the company’s QuEEN platform and its preclinical programs, as well as increased headcount and laboratory-related expenses due to the company’s continued growth as an R&D organization. R&D expenses for the third quarter of 2022 included non-cash stock-based compensation of $1.7 million and non-cash lease expense of $1.5 million due to a rent holiday on the company’s Harrison Avenue facility lease. The same period in 2021 included non-cash stock-based compensation expense of $1.1 million.

General and Administrative (G&A) Expenses: G&A expenses for the third quarter of 2022 were $7.0 million, compared to $4.8 million for the third quarter of 2021. The increase in G&A expenses was a result of additional expenses incurred in support of the company’s growth and operations as a public company. G&A expenses included non-cash stock-based compensation of $1.5 million for the third quarter of 2022, compared to $1.0 million for the same period in 2021.

Net Loss: Net loss for the third quarter of 2022 was $27.3 million, compared to $19.8 million for the third quarter of 2021.

Cash Position and Financial Guidance: Cash, cash equivalents, restricted cash and marketable securities as of September 30, 2022, were $277.4 million, compared to cash, cash equivalents and restricted cash of $299.5 million as of June 30, 2022. The decrease is primarily related to cash used to fund operations of $20.6 million and cash used for fixed assets of $1.4 million, partially off-set by proceeds from the exercise of stock options of $0.1 million. The company expects that its cash and cash equivalents will be sufficient to fund planned operations and capital expenditures into late 2024.

Century Therapeutics Reports Third Quarter 2022 Financial Results and Provides Business Updates

On November 10, 2022 Century Therapeutics, Inc. (NASDAQ: IPSC), an innovative biotechnology company developing induced pluripotent stem cell (iPSC)-derived cell therapies in immuno-oncology, reported financial results and business highlights for the third quarter ended September 30, 2022 (Press release, Century Therapeutics, NOV 10, 2022, View Source [SID1234623831]).

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"We made steady progress this quarter with our next generation platform and robust portfolio of cell therapy product candidates, including FDA clearance of our first IND for CNTY-101 in relapsed/refractory B-cell malignancies," said Lalo Flores, Chief Executive Officer, Century Therapeutics. "We are focused on initiating the Phase 1 ELiPSE-1 trial to assess the potential of our Allo-EvasionTM edits, designed to prevent immunological rejection and enhance persistence of multiple dosing regimens of CNTY-101 with the aim to increase the proportion of patients that achieve durable responses. We look forward to sharing meaningful preclinical data updates at the SITC (Free SITC Whitepaper) meeting this week on both our iNK and gamma delta iT cell platforms, and to discussing our pipeline progress and our solid tumor strategy at our virtual Research and Development Day tomorrow."

"As we continue to realize efficiencies in our platform and synergies across our pipeline, we are updating our financial guidance for the year by reducing our expected GAAP Operating Expenses to $140 million and $145 for the full year ended 2022," said Michael Diem, Chief Business Officer, Century Therapeutics. "We will remain fiscally responsible as we continue to execute and deliver on our platforms, programs and key milestones, leaving us well positioned with cash runway into 2025."

Business Highlights

●Following notification from the U.S. Food and Drug Administration (FDA) that the Phase 1 ELiPSE-1 study of the Company’s first clinical product candidate, CNTY-101, may proceed, Century expects to initiate the trial imminently. The Phase 1 study is designed to assess the safety, tolerability, pharmacokinetics and preliminary efficacy of CNTY-101 in patients with relapsed or refractory CD19 positive B-cell malignancies. All patients will receive an initial standard dose of conditioning chemotherapy consisting of cyclophosphamide (300 mg/m2) and fludarabine (30mg/m2) for three days. Schedule A of the trial includes a single-dose escalation of CNTY-101 and subcutaneous IL-2. Schedule B will evaluate a three-dose schedule per cycle of CNTY-101. Patients who demonstrate a clinical benefit are eligible for additional cycles of treatment with or without additional lymphodepletion pending FDA consent.

●In October 2022, the Company announced the appointment of Daphne Quimi and Timothy Walbert to its Board of Directors. Ms. Quimi is currently Chief Financial Officer of Amicus Therapeutics and brings operational experience in public accounting and financial reporting to Century. Mr. Walbert is currently Chairman, President, and Chief Executive Officer of Horizon Therapeutics, and brings expertise in product portfolio building and commercialization.

Subsequent Events and Upcoming Milestones

●Century plans to present preclinical data from its iPSC-based cell therapy platform in two posters at the Society for Immunotherapy of Cancer (SITC) (Free SITC Whitepaper) 37th Annual Meeting today, November 10, 2022, and tomorrow, Friday, November 11, 2022. A copy of the presentations will be made available in the Posters section of Century’s website.

●The Company will host a virtual Research and Development (R&D) Day on Friday, November 11, 2022, from 8:00 AM to 9:30 AM ET. The R&D Day will feature presentations from the Company’s management team and Jonathan Rosenberg, M.D., Chief of the Genitourinary Oncology Service at the Memorial Sloan Kettering Cancer Center (MSKCC), Physician at Memorial Hospital at MSKCC, and Professor of Medicine at Weill Cornell Medical College. The event will focus on the Company’s gamma delta iT cell platform and solid tumor strategy and include a discussion of preclinical data to be presented at the SITC (Free SITC Whitepaper) Annual Meeting. For additional information on how to access the event, please visit the Events & Presentations section of Century’s website.

Third Quarter 2022 Financial Results

●Cash Position: Cash, cash equivalents, and investments were $395.3 million as of September 30, 2022, as compared to $358.8 million as of December 31, 2021. Net cash provided by operations was $36.9 million for the nine months ended September 30, 2022 (which includes deferred revenue from the Bristol-Myers Squibb (BMS) collaboration of $118.5 million) compared to net cash used in operations of $64.7 million for the nine months ended September 30, 2021.

●Collaboration Revenue: Collaboration revenue was $2.2 million for the three months ended September 30, 2022, generated through the Company’s collaboration, option and license agreement with BMS.

●Research and Development (R&D) expenses: R&D expenses were $25.9 million for the three months ended September 30, 2022, compared to $19.5 million for the same period in 2021. The increase in R&D expenses was primarily due to an increase in personnel expenses related to increased headcount to expand the Company’s R&D capabilities, costs for pre-clinical studies, costs for laboratory supplies and facility costs offset by a decrease in collaboration expenses with FUJIFILM Cellular Dynamics, Inc. (FCDI) as the scope of work with FCDI has narrowed down to primarily manufacturing CNTY-101 clinical supply.

●General and Administrative (G&A) expenses: G&A expenses were $8.1 million for the three months ended September 30, 2022, compared to $6.3 million for the same period in 2021. The increase was primarily due to an increase in employee headcount, an increase in directors’ and officers’ insurance expense and an increase in the Company’s professional fees as a result of expanded operations to support the Company’s infrastructure as well as additional costs to operate as a public company, and increased information technology and facility costs.

●Net loss: Net loss was $30.7 million for the three months ended September 30, 2022, compared to $26.0 million for the same period in 2021.

Financial Guidance

●The Company expects full year generally accepted accounting principles (GAAP) operating expenses to be between $140 million and $145 million, including non-cash stock-based compensation expense of $10 million to $15 million.

●The Company expects its cash, cash equivalents, and investments will support operations into 2025.

BioXcel Therapeutics Reports Third Quarter 2022 Financial Results and Recent Operational Highlights

On November 10, 2022 BioXcel Therapeutics, Inc. (Nasdaq: BTAI), a biopharmaceutical company utilizing artificial intelligence approaches to develop transformative medicines in neuroscience and immuno-oncology, reported its financial results for the third quarter ended September 30, 2022 and provided an update on key strategic initiatives (Press release, BioXcel Therapeutics, NOV 10, 2022, View Source [SID1234623830]).

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"In the four months since IGALMI’s trade launch, BioXcel Therapeutics is advancing its leadership position in the agitation-treatment market," said Vimal Mehta, Ph.D., CEO of BioXcel Therapeutics. "In parallel, we are anticipating pivotal trial data readouts investigating BXCL501 for the treatment of Alzheimer’s-related agitation, and bipolar and schizophrenia-related agitation in an at-home setting. We are well-positioned to potentially capture 139 million annual agitation episodes in the U.S.1-5 Our company is rooted in AI-driven innovation, and we are proud to be at the forefront of developing transformative medicines in neuroscience."

Company Highlights

Neuroscience Franchise
IGALMI (dexmedetomidine) sublingual film
IGALMI is approved by the U.S. Food and Drug Administration (FDA) for the acute treatment of agitation associated with schizophrenia or bipolar I or II disorder in adults.6 Up to 16 million institutional episodes occur annually within these two patient populations in the U.S.1-3

Commercial

Increased Market Access: Generated strong initial interest in IGALMI from key stakeholder groups to drive formulary access and pull-through demand.
Group Purchasing Organization (GPO) Progress: Signed contract with largest GPO covering nearly 50% of target beds; in active discussions with the other leading GPOs.
Pharmacy and Therapeutics (P&T) Committee Progress: Nearly 470 P&T decisions are scheduled, with more than a dozen formulary wins and early product utilization recorded in the quarter.
Integrated Delivery Network (IDN) Progress: Recently deployed Corporate Account Directors (CADs) are dedicated to driving formulary and contracting process with 59 high-value IDNs and affiliated hospitals.
Formulary voting currently scheduled for approximately 41,000 (21%) target IDN beds.
Deployed IGALMI Institutional Sales Force: Integrated commercial team to cover entire U.S. agitation market.

In May, initially launched institutional sales force with 26 reps covering 700 target hospitals, with 75% reach.
By December 1, expected to have deployed a total sales force of 70 reps to cover approximately 1,700 target hospitals.
Precise targeting of agitation opportunities by leveraging 81 billion claims records spanning over five years.
Positive market response and progress to date on access since launch, combined with expanded sales footprint, positions IGALMI well for sales growth in 2023.
Augmented Marketing Efforts: Peer speaker programs and digital marketing driving IGALMI interest and awareness, with focus on message amplification in 2023.

Hosted IGALMI Commercial Day: Outlined evolving agitation market dynamics, formulary process and contracting, positive initial momentum, and launch performance metrics of commercial success.
Medical Affairs

Increased Field Team Engagement: Medical Science Liaison and Medical Managed Care teams actively engaged with medical community and P&T committee members.
Participated in numerous clinical and pharmacoeconomic discussions with GPO and P&T formulary decision-makers, utilizing dynamic budget impact model and physical restraint cost-estimator tools.
Published Two Manuscripts From Pivotal SERENITY Trials: first manuscript from SERENITY I in Journal of Clinical Psychiatry and a post-hoc analysis of SERENITY I and II data in Advances in Therapy.
Participated / Presented at Leading Medical Conferences: Psych Congress, Emergency Nurses Association (ENA) Conference, American College of Emergency Physicians (ACEP) Scientific Assembly, American Psychiatric Nurses Association (APNA) Conference, and Academy of Managed Care Pharmacy (AMCP) NEXUS.
Clinical Pipeline
BXCL501, a proprietary, sublingual film formulation of dexmedetomidine, has received Breakthrough Therapy and Fast Track designation for the acute treatment of agitation associated with dementia.

Alzheimer’s Disease-related Agitation: TRANQUILITY program is designed to evaluate BXCL501 in Alzheimer’s-related agitation, where 100 million agitation episodes are estimated to occur in the U.S. annually.4
TRANQUILITY II: On track to announce top-line data in 1H 2023.
TRANQUILITY III: Expect to initiate enrollment in December 2022.
Independent Data and Safety Monitoring (DSM) committee periodically reviews subject safety and tolerability, recommending study continuation.
Bipolar or Schizophrenia-related Agitation (At-Home Use): SERENITY III program is designed to evaluate BXCL501 for at-home use, where 23 million at-home Rx and self-managed agitation episodes occur in the U.S. annually.5
SERENITY III consists of two parts:

Part one: top-line efficacy data is expected in 1H 2023. Similar to SERENITY I and II, this trial will evaluate a 60mcg dose with the primary objective to assess efficacy in acute treatment of agitated bipolar I and II and schizophrenia patients.
Part two: evaluation of the safety of self-administration of a 60mg dose at-home in comparison with placebo is expected to initiate in 1H 2023.
SERENITY III is expected to utilize similar investigators and clinical sites as the SERENITY I and II trials, which formed the basis for the FDA’s approval of IGALMI.

Adjunctive Treatment for Major Depressive Disorder (MDD) for At-Home Use: Ongoing Phase 1 trial is designed to test safety and tolerability of daily dosing of BXCL501 to inform dose selection for evaluating its potential use in combination with selective serotonin reuptake inhibitors (SSRIs) / serotonin-norepinephrine reuptake inhibitors (SNRIs) in MDD patients. Over 300 million antidepressant prescriptions are filled annually in the U.S., and current treatments are limited by slow onset of action and incomplete responses.7
Top-line results from the Phase 1 trial are expected in 1H 2023.
Progress to date includes multiple seven-day daily dosing regimen cohorts:
Daily dosing of 30mcg, 60mcg, or 80mcg is completed.
Twice daily dosing of 30mcg in the AM and 60mcg in the PM is completed.
Twice daily dosing of 40mcg in the AM and 80mcg in the PM is ongoing.
After a maximum tolerable dose is determined, the final cohort will initiate to test a daily maximum well-tolerated dose in combination with daily SNRI.
OnkosXcel Therapeutics
OnkosXcel Therapeutics is a subsidiary of BioXcel Therapeutics focused on the sustained growth of the Company’s immuno-oncology (I-O) franchise, including BXCL701, its most advanced I-O program. BXCL701 is an investigational, orally administered, systemic innate immune activator in development for the combination treatment of aggressive forms of prostate cancer.

Strategic Advancements: Continued to evaluate strategic options, including potential third-party investments, enhanced operational capabilities, and progressed clinical and regulatory development plans for BXCL701.
Metastatic Castration-Resistant Prostate Cancer (mCRPC) Program: Continued ongoing Phase 2 trial for BXCL701 in combination with KEYTRUDA (pembrolizumab) in mCRPC patients with small cell neuroendocrine (SCNC) or adenocarcinoma phenotype.
Presented updated, preliminary results demonstrating composite response rate of 33% for first 15 evaluable SCNC patients, and median duration of response of 9 months for the 5 responders at the Prostate Cancer Foundation Annual Scientific Retreat in October.
Completed enrollment of 28-patient SCNC cohort and expect to present final efficacy data from SCNC cohort in early 2023.
Continued enrollment in adenocarcinoma randomized trial expansion evaluating BXCL701 monotherapy vs. BXCL701-KEYTRUDA combination therapy.
Predictive Biomarkers for BXCL701: Presenting poster on potential predictive biomarkers for BXCL701 responsiveness in patients with leukemias at 37th Annual Meeting of the Society for Immunotherapy of Cancer (SITC) (Free SITC Whitepaper) on November 10, 2022 (poster embargo lifts on November 10 at 9 a.m. ET). Those biomarkers have potential implications for solid tumors.
Corporate Updates
Enhanced Intellectual Property:

For the BXCL501 pipeline, two U.S. patents (10,792,246 & 11,478,422) have been issued with two additional Notices of Allowance received from the U.S. Patent and Trademark Office, along with seven patent allowances/issuances from foreign patent offices. The newly issued/allowed U.S. patents are expected to be included in the FDA’s Approved Drug Products with Therapeutic Equivalence Evaluations (commonly known as the Orange Book).
For BXCL701, eight patent allowances/issuances were received from foreign patent offices.
Third Quarter 2022 Financial Results

Net Revenue: Net revenue of $137,000 for the quarter resulted from early product trial with limited market access. Due to the Company’s direct shipping model to hospitals, no wholesaler stocking was expected.

Research and Development (R&D) Expenses: R&D expenses were $22.1 million for the third quarter of 2022, compared to $11.9 million for the same period in 2021. The increased expenses were primarily attributable to an increase in clinical trial costs as the Company expanded its BXCL501 clinical program for Alzheimer’s-related agitation, at-home use, and MDD.

Selling, General and Administrative (SG&A) Expenses: SG&A expenses were $17.1 million for the third quarter of 2022, as compared to $14.9 million for the same period in 2021. The increase was primarily due to personnel and costs related to the launch of IGALMI in the U.S.

Net Loss: BioXcel Therapeutics reported a net loss of $41.8 million for the third quarter of 2022, compared to a net loss of $26.8 million for the same period in 2021. The Company used $31.5 million in operating cash during the third quarter.

As of September 30, 2022, cash and cash equivalents totaled approximately $232.3 million.

Conference Call
BioXcel Therapeutics will host a conference call and webcast November 10, 2022, at 8:30 a.m., ET, to discuss its third quarter 2022 financial results and provide an update on recent operational highlights. To access the call, please dial 877-407-5795 (domestic) and 201-689-8722 (international). A live webcast of the call will be available on the Investors section of the corporate website, bioxceltherapeutics.com, and a replay will be available through February 10, 2023.

BioXcel Therapeutics may use its website as a distribution channel of material information about the Company. Financial and other important information regarding the Company is routinely posted on and accessible through the Investors sections of its website at www.bioxceltherapeutics.com. In addition, you may automatically receive email alerts and other information about the Company when you enroll your email address by visiting the "Email Alerts" option under the News/Events menu of the Investors & Media section of its website.

About IGALMI (dexmedetomidine) sublingual film

INDICATION

IGALMI is indicated for the acute treatment of agitation associated with schizophrenia or bipolar I or II disorder in adults. Limitations of Use: The safety and effectiveness of IGALMI have not been established beyond 24 hours from the first dose.

IMPORTANT SAFETY INFORMATION

IGALMI can cause serious side effects, including:

Decreased blood pressure, low blood pressure upon standing, and slower than normal heart rate, which may be more likely in patients with low blood volume, diabetes, chronic high blood pressure, and older patients. IGALMI is taken under the supervision of a healthcare provider who will monitor vital signs (like blood pressure and heart rate) and alertness after IGALMI is administered to help prevent falling or fainting. Patients should be adequately hydrated and sit or lie down after taking IGALMI and instructed to tell their healthcare provider if they feel dizzy, lightheaded, or faint.
Heart rhythm changes (QT interval prolongation). IGALMI should not be given to patients with an abnormal heart rhythm, a history of an irregular heartbeat, slow heart rate, low potassium, low magnesium, or taking other drugs that could affect heart rhythm. Taking IGALMI with a history of abnormal heart rhythm can increase the risk of torsades de pointes and sudden death. Patients should be instructed to tell their healthcare provider immediately if they feel faint or have heart palpitations.
Sleepiness/drowsiness. Patients should not perform activities requiring mental alertness, such as driving or operating hazardous machinery, for at least 8 hours after taking IGALMI.
Withdrawal reactions, tolerance, and decreased response/efficacy. IGALMI was not studied for longer than 24 hours after the first dose. Physical dependence, withdrawal symptoms (e.g., nausea, vomiting, agitation), and decreased response to IGALMI may occur if IGALMI is used longer than 24 hours.
The most common side effects of IGALMI in clinical studies were sleepiness or drowsiness, a prickling or tingling sensation or numbness of the mouth, dizziness, dry mouth, low blood pressure, and low blood pressure upon standing.

These are not all the possible side effects of IGALMI. Patients should speak with their healthcare provider for medical advice about side effects.

Patients should tell their healthcare provider about their medical history, including if they suffer from any known heart problems, low potassium, low magnesium, low blood pressure, low heart rate, diabetes, high blood pressure, history of fainting, or liver impairment. They should also tell their healthcare provider if they are pregnant or breastfeeding or take any medicines, including prescription and over-the-counter medicines, vitamins, and herbal supplements. Patients should especially tell their healthcare provider if they take any drugs that lower blood pressure, change heart rate, or take anesthetics, sedatives, hypnotics, and opioids.

Everyone is encouraged to report negative side effects of prescription drugs to the FDA. Visit www.fda.gov/medwatch or call 1-800-FDA-1088. You can also contact BioXcel Therapeutics, Inc. at 1-833-201-1088 or [email protected].

Please see full Prescribing Information.

About TRANQUILITY II and III

TRANQUILITY II and III are pivotal Phase 3 trials evaluating BXCL501 for the acute treatment of agitation in patients with probable Alzheimer’s disease (AD). The trials include patients who experience agitation across diverse medical settings and across the range of dementia severity. On days when an acute episode of agitation arises, and pharmacological treatment is necessary, the efficacy and safety of dosing is assessed. TRANQUILITY II and III are designed to evaluate the safety and efficacy of BXCL501 for the potential treatment of the full spectrum of agitation associated with AD. Each trial will enroll approximately 150 dementia patients 65 years and older who will self-administer 40mcg or 60mcg of BXCL501 or placebo whenever agitation episodes occur over a three-month period. TRANQUILITY II initiated in December 2021, and will assess patients in assisted living or residential facilities requiring minimal assistance with activities of daily living. TRANQUILITY III will assess patients residing in nursing homes with moderate to severe dementia and require moderate or greater assistance with activities of daily living. The studies will assess agitation as measured by the changes from baseline in the Positive and Negative Syndrome Scale-Excitatory Component (PEC) total score, and include Pittsburgh Agitation Scale (PAS) scores and Clinical Global Impression (CGI). The primary efficacy endpoint for both studies is change in PEC total score from baseline measured at two hours after the initial dose.

About SERENITY III

SERENITY III is a double-blinded, placebo-controlled, pivotal study designed to evaluate BXCL501 60mcg dose for at-home use. This strategic trial decision follows a Type B meeting with the U.S. FDA and observed dose-dependent responses in a prior Phase 1/2b study assessing 20mcg, 60mcg, 80mcg, 120mcg, and 180mcg doses. The first part of SERENITY III is similar to the SERENITY I and II pivotal trials and is designed to assess the efficacy and safety in acutely agitated patients with bipolar disorder or schizophrenia. The primary efficacy endpoint is change from baseline in Positive and Negative Syndrome Scale-Excitatory Component (PEC) total score at two hours after dosing compared to placebo. The second part of SERENITY III is designed to assess safety of 60 mcg doses compared to placebo when self-administered at home. SERENITY III is expected to utilize many of the same investigators and clinical sites as SERENITY I and II.

About Major Depressive Disorder (MDD) Healthy Volunteer Study

The MDD development program has begun with a Phase 1 double-blind, placebo-controlled, multiple ascending dose (MAD) selection trial in healthy volunteers evaluating BXCL501 daily dosing. It is designed to inform dose selection in a future proof-of-concept study evaluating daily BXCL501 dosing in MDD patients. The current study includes cohorts of 18 volunteers who complete seven days of daily dosing. Cohorts of 30mcg, 60mcg, and 80mcg once daily have completed, as have cohorts of twice daily doses; 30mcg in the AM and 60mcg in the PM. Dose escalation is continuing with a cohort testing 40mcg in the AM and 80mcg in PM completing. Additional dose cohorts are planned. Once a maximum tolerable dose (MTD) is determined, escalation will be discontinued and a final cohort will initiate to test a daily maximal well-tolerated dose/ schedule in combination with daily SNRI for one week.