Exelixis Announces U.S. FDA Accepts Investigational New Drug Application for XB002 in Patients with Advanced Solid Tumors

On April 5, 2021 Exelixis, Inc. (Nasdaq: EXEL) reported that the U.S. Food and Drug Administration (FDA) has accepted its Investigational New Drug Application (IND) to evaluate the safety, tolerability, pharmacokinetics and preliminary antitumor activity of XB002 in patients with advanced solid tumors (Press release, Exelixis, APR 5, 2021, View Source [SID1234577581]). As a next-generation tissue factor-targeting antibody-drug conjugate (ADC), XB002 has the potential for an improved therapeutic index and may provide a favorable safety profile compared with earlier-generation tissue factor-targeting ADCs.

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"The acceptance of our Investigational New Drug Application for XB002 gets us one step closer to our first biologic entering the clinic and learning more about its potential to help patients with difficult-to-treat cancers," said Gisela Schwab, M.D., President, Product Development and Medical Affairs and Chief Medical Officer, Exelixis. "Considering XB002’s promising preclinical data and potential differentiation from other tissue factor-targeting antibody-drug conjugates, we look forward to initiating our phase 1 trial in patients with advanced solid tumors."

XB002 (formerly ICON-2) is an ADC composed of a human monoclonal antibody against tissue factor that is conjugated to a cytotoxic agent. After binding to tissue factor on tumor cells, XB002 is internalized, and the cytotoxic agent is released, resulting in targeted tumor cell death. XB002 is a rationally designed next-generation ADC that leverages proprietary linker-payload technology.

Preclinical data demonstrated that XB002 binds to tissue factor without affecting the coagulation cascade, in contrast with prior therapies in this class. The data also demonstrated encouraging activity of XB002 in multiple solid tumor cancer models and improved tolerability compared with other tissue factor-targeting ADCs. XB002 has shown significant tumor growth inhibition and, in some cases, complete regression. The rational design and preclinical profile of this novel tissue factor-targeting ADC suggest that, if born out in clinical evaluation, XB002 could have an improved therapeutic index and favorable safety profile compared with earlier tissue factor-targeting ADCs.

Vincerx Pharma Announces Redemption of Public Warrants

On April 5, 2021 Vincerx Pharma, Inc. (Nasdaq: VINC) (the "Company"), reported that it will redeem all of its outstanding public warrants (the "Public Warrants") to purchase shares of the Company’s common stock, $0.0001 par value per share ("Common Stock"), that were issued under the Warrant Agreement, dated as of March 5, 2020 (the "Warrant Agreement"), by and between the Company and Continental Stock Transfer & Trust Company, as warrant agent (the "Warrant Agent"), and that remain outstanding at 5:00 p.m. New York City time on May 5, 2021 (the "Redemption Date") for a redemption price of $0.01 per Public Warrant (the "Redemption Price") (Press release, Vincerx Pharma, APR 5, 2021, View Source [SID1234577564]). Prior to the Redemption Date, the Company’s units, listed on the Nasdaq Capital Market under the symbol "LSACU," will each be separated into one share of Common Stock and one Public Warrant, and be traded on the Nasdaq Capital Market under the symbols "LSAC" and "LSACW," respectively.

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Warrants to purchase Common Stock that were issued under the Warrant Agreement in a private placement and still held by the initial holders thereof or their permitted transferees are not subject to this redemption.

Under the terms of the Warrant Agreement, the Company is entitled to redeem all the outstanding Public Warrants if the last sale price of the Common Stock is at least $16.50 per share for any 20 trading days within any 30-day trading period ending on the third business day prior to the date on which a notice of redemption is given. This share price performance target has been met. At the direction of the Company, the Warrant Agent has delivered a notice of redemption to each of the registered holders of the outstanding Public Warrants.

Each Public Warrant may be exercised by the holders thereof until 5:00 p.m. New York City time on the Redemption Date, to purchase one-half (1/2) of a fully paid and non-assessable share of Common Stock underlying such warrant, at the exercise price of $11.50 per whole share of Common Stock. Pursuant to the Warrant Agreement, a holder may exercise its warrants only for a whole number of shares. This means that only an even number of Public Warrants may be exercised at any given time by a holder. Any Public Warrants that remain unexercised following 5:00 p.m. New York City time on the Redemption Date will be void and no longer exercisable, and the holders of those Public Warrants will be entitled to receive only the redemption price of $0.01 per warrant. 6,563,767 Public Warrants were initially issued by the Company, exercisable for an aggregate of 3,281,883 shares of Common Stock at a price of $11.50 per share, representing a total of approximately $37.7 million in potential proceeds to the Company.

None of the Company, its board of directors or employees has made or is making any representation or recommendation to any holder of the Public Warrants as to whether to exercise or refrain from exercising any Public Warrants.

The shares of Common Stock underlying the Public Warrants have been registered by the Company under the Securities Act of 1933, as amended, and are covered by a registration statement on Form S-1 filed with, and declared effective by, the Securities and Exchange Commission (File No. 333-252589).

Questions concerning redemption and exercise of the Public Warrants can be directed to Continental Stock Transfer & Trust Company, 1 State Street, 30th Floor, New York, New York 10004, Attention: Compliance Department, telephone number (212) 509-4000.

No Offer or Solicitation
This press release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any offer of any of the Company’s securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of any such jurisdiction.

Selecta Biosciences to Participate at the 20th Annual Needham Healthcare Conference

On April 5, 2021 Selecta Biosciences, Inc. (NASDAQ: SELB), a biotechnology company leveraging its clinically validated ImmTOR platform to develop tolerogenic therapies that selectively mitigate unwanted immune responses, reported that Selecta’s Chief Executive Officer, Carsten Brunn, Ph.D., will participate in a fireside chat and one-on-one investor meetings at the virtual 20th Annual Needham Healthcare Conference to be held April 12-15, 2021 (Press release, Selecta Biosciences, APR 5, 2021, View Source [SID1234577582]).

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Details on the presentation can be found below.

Date: Tuesday, April 13
Fireside chat time: 3:00 p.m. ET
Webcast: Click Here

An archived webcast will also be available in the Investors & Media section of the company’s website at www.selectabio.com.

SORRENTO ENTERS INTO MERGER AGREEMENT TO ACQUIRE LATE-STAGE ONCOLOGY COMPANY ACEA THERAPEUTICS

On April 5, 2021 Sorrento Therapeutics, Inc. (Nasdaq: SRNE, "Sorrento") reported the signing of a merger agreement pursuant to which Sorrento will acquire ACEA Therapeutics, Inc. ("ACEA") (Press release, Sorrento Therapeutics, APR 5, 2021, View Source [SID1234577565]). The acquisition will include late clinical stage drug Abivertinib, clinical stage candidate AC0058, preclinical stage candidate AC0939, and ACEA’s extensive proprietary library of small molecules (over 1,000,000 compounds), which potentially have applications for numerous human disease indications, including non-small cell lung cancer (NSCLC), B cell lymphomas, systemic lupus, rheumatoid arthritis, multiple sclerosis and viral infections. These compounds are being actively studied in clinical trials and/or preclinical models to advance the most promising candidates rapidly to clinical stage development. Abivertinib, a novel small molecule tyrosine kinase inhibitor (TKI) that selectively targets both a mutant form of the epidermal growth factor receptor (EGFR) and Bruton’s tyrosine kinase (BTK), was originally identified from ACEA’s compound library. Abivertinib has the potential to improve outcomes in resistant prostate cancer, systemic lupus erythematosus, and various B cell lymphomas in addition to NSCLC, an indication for which a registrational/Phase 3 trial has been completed. It is currently being studied as a Phase 2 treatment for COVID-19-induced respiratory compromise in the US and Brazil. A second clinical candidate, AC0058, is a next generation BTK inhibitor, currently in a Phase 1b trial for Lupus patients in the US, which can potentially be expanded to other autoimmune diseases such as multiple sclerosis.

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The acquisition will also include ACEA’s state of the art cGMP facility located in Quzhou, China, on a 23-acre campus with five buildings. This facility has successfully manufactured multiple batches of the active pharmaceutical ingredient (API) and final product in capsules for Abivertinib and AC0058 for clinical studies. The ACEA facility currently has capacity to manufacture up to 5,000 kg/year of APIs and 50,000,000 capsules of final drug product.

The ACEA next generation BTKi and other TKI small molecule drug candidates are highly synergistic with Sorrento’s broad biological product pipelines in therapeutic antibodies, antibody drug conjugates (ADCs), autologous chimeric antigen receptor-T (CAR-T) and allogeneic dimeric antigen receptor-T (DAR-T) cell therapies, oncolytic viruses and IL-2 immune modulators. The synergy will potentially enable Sorrento to develop many life-saving, combinational drugs for difficult-to-treat human illness in oncology, autoimmune and infectious diseases.

Dr. Henry Ji, Chairman and CEO of Sorrento Therapeutics, stated "The ACEA acquisition will bring us a step closer to developing into a major biopharmaceutical company and we look forward to welcoming the ACEA team into the Sorrento family."

As previously announced on October 16, 2020, Sorrento and ACEA entered into a letter of intent setting forth the terms and conditions by which Sorrento would acquire ACEA. In consideration for the acquisition, at the closing of the merger, ACEA’s equity holders will receive up to an aggregate of $38 million in shares of Sorrento common stock, subject to certain adjustments, based on a price per share calculated in accordance with the merger agreement. In addition to the foregoing consideration, and subject to the achievement of certain clinical and sales milestones (as described below), Sorrento will also pay the ACEA equity holders (i) up to $450,000,000 in additional payments, subject to the receipt of certain regulatory approvals and achievement of certain net sales targets with respect to the assets acquired in the merger and (ii) with respect to specified royalty-bearing products, five to ten percent of the annual net sales thereof, in each case in accordance with the terms of an earn-out agreement. The amount referenced in clause (i) of the preceding sentence includes the amounts that would have otherwise been due to ACEA under that certain License Agreement, dated July 13, 2020, which agreement will terminate in its entirety at the effective time of the merger.

The merger is expected to close in the second quarter of 2021, subject to customary closing conditions and regulatory approval. If the proposed merger is consummated, the issuance of the shares of Sorrento common stock would be made in accordance with an exemption from the registration requirements of the Securities Act of 1933, as amended (the "Securities Act"), pursuant to Section 4(a)(2) thereof and Regulation D and Regulation S thereunder. Such shares of Sorrento common stock would not be registered under the Securities Act and could not be offered or sold without registration unless an exemption from such registration is available. This press release does not constitute an offer to sell or the solicitation of an offer to buy, any shares of Sorrento common stock.

Advaxis Announces Agreement with Columbia University Irving Medical Center to Fund Phase 1 Study of ADXS-504 for the Treatment of Early Prostate Cancer

On April 5, 2021 Advaxis, Inc. (Nasdaq: ADXS), a clinical-stage biotechnology company focused on the development and commercialization of immunotherapy products, reported an agreement with Columbia University Irving Medical Center to fund a Phase 1 clinical study evaluating ADXS-504 in patients with biochemically recurrent prostate cancer (Press release, Advaxis, APR 5, 2021, https://ir.advaxis.com/news-releases/news-release-details/advaxis-announces-agreement-columbia-university-irving-medical [SID1234577583]). The study, expected to begin in Q2 2021, will be the first clinical evaluation of ADXS-504, Advaxis’ off-the-shelf neoantigen immunotherapy drug candidate for early prostate cancer. Mark Stein, M.D., associate professor of medicine in the Division of Hematology/Oncology at Columbia University Vagelos College of Physicians and Surgeons, will be the study’s principal investigator.

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The Phase 1 open-label study will evaluate the safety and tolerability of ADXS-504 monotherapy, administered via infusion, in 9-18 patients with biochemically recurrent prostate cancer, i.e., those with elevation of prostate-specific antigen (PSA) in the blood after radical prostatectomy or radical radiotherapy (external beam or brachytherapy) and who are not currently receiving androgen ablation therapy. The study will also evaluate preliminary clinical and immune responses following treatment with ADXS-504 monotherapy.

Nearly 248,530 men in the United States will be diagnosed with prostate cancer in 2021, and approximately 34,130 will die from this disease. Many more men with prostate cancer will experience rising prostate-specific antigen (PSA) levels following local therapy with radical radiotherapy or prostatectomy, a condition known as biochemical recurrence (BCR). BCR is not typically associated with imminent death, and biochemical progression may occur over a prolonged period. Clinicians treating men with BCR thus face a difficult set of decisions in attempting to delay the onset of metastatic disease and death while avoiding over-treating patients whose disease may never affect their overall survival or quality of life.

"Currently, men with biochemically recurrent prostate cancer are either monitored for a period of time without intervention or may be started on medicine to decrease the level of testosterone in the body, which can have significant side effects," said Dr. Stein. "Therefore, we need new approaches to stimulate the body’s immune system to control the prostate cancer. Given the encouraging results from a Phase 2 study of ADXS-PSA, which targets a single-antigen, in combination with KEYTRUDA, in men with advanced prostate cancer, and emerging signals of potential clinical activity of the Company’s multi-antigen technology in non-small cell lung cancer, we are excited to have the opportunity to explore the potential of ADXS-504 immunotherapy as a novel treatment modality for biochemically recurrent prostate cancer."

ADXS-504 is a novel Lm-based immunotherapy, bioengineered to elicit T cell responses against 24 tumor antigens that include 14 peptide antigens derived from frequently occurring and commonly shared hotspot mutations in patients with prostate cancer and 10 peptide antigens derived from sequence-optimized tumor-associated antigens (TAAs) that are differentially expressed or overexpressed in prostate cancer. ADXS-504 is designed to express multiple tumor antigen targets to which patients may generate a broad set of effector T cells for tumor control. Similar to Advaxis’ other Lm-based immunotherapies, ADXS-504 is expected to induce an innate immune response followed by the adaptive response and modification of the immunosuppressive tumor microenvironment (TME) by reducing regulatory T cells (Tregs) and myeloid-derived suppressor cell (MDSC) frequencies in the TME.

Kenneth A. Berlin, President and Chief Executive Officer of Advaxis said, "We are pleased to be working with Columbia University Irving Medical Center to conduct the first clinical evaluation of ADXS-504 in earlier stages of prostate cancer where drug constructs of this type could potentially control micrometastasis efficiently. The strategic decision to transition the ADXS-504 to an investigator-sponsored study at Columbia will provide access to world-class expertise and has the potential to accelerate patient recruitment in order to expedite our clinical progress. We are encouraged by our momentum and look forward to continued progress across our ADXS-HOT program, which also includes ongoing studies in NSCLC in the first line setting and in patients who have progressed on pembrolizumab."