Medigene Presents Preclinical Data on Optimal Affinity TCRs Targeting the Neoantigen Mutant KRAS

On May 15, 2024 MediGene, an immuno-oncology platform company focusing on the discovery and development of T cell immunotherapies for solid tumors, reported the company’s proprietary T cell receptor (TCR) discovery process to obtain optimal affinity 3S (sensitive, specific and safe) TCRs at the 21th Association for Cancer Immunotherapy (CIMT) (Free CIMT Whitepaper) Annual Meeting in Mainz from May 15 – 17, 2024 (Press release, MediGene, MAY 15, 2024, View Source [SID1234643365]). Data presented also shows the clear benefit of adding the PD1-41BB costimulatory switch protein (CSP) to further armor and enhance these 3S TCR-T cells, which enables them to overcome the immunosuppressive tumor microenvironment.

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The poster with the title "Selection of superior KRAS G12V mutation-specific T cell receptors with unique characteristics for 3rd generation armored and enhanced T cell therapy" will be available on Wednesday, May 15, 2024, following the presentation on Medigene’s website: View Source

"The discovery process of unique TCR sequences is the first key step to generate TCR-T cells with optimal safety, efficacy and durability," said Dr. Selwyn Ho, Chief Executive Officer at Medigene. "Employing a high-throughput process as part of our End-To-End (E2E) Platform enabled us to discover unique TCR sequences with distinct features with respect to specificity, sensitivity and safety (3S). These potential best-in-class 3S TCRs hold promise for utilization across diverse modalities, here focusing on T cell receptor engineered T cell (TCR-T) therapies, but also for use in T cell engagers and TCR natural killer cell therapies. "

He continued: "Our TCRs can undergo further enhancement through integration of various technologies within our E2E Platform such as with our exclusive PD1-41BB CSP, which significantly enhances TCR-T cell functionality, persistence and proliferation and offers the promise of highly effective and durable TCR-T therapies in patients."

The presented data highlighted the specificity and sensitivity of TCR-T cells co-expressing the PD1-41BB CSP alongside one of three distinct 3S TCRs targeting the mKRAS G12V neoantigen. These TCR-T cells displayed markedly increased secretion of interferon gamma (IFNγ) observed upon TCR-T cell stimulation with mKRAS G12V-positive tumor cells, contrasting with the absence of IFN γ secretion upon stimulation with any tumor or healthy cell expressing naturally occurring wild-type KRAS protein.

All three 3S TCRs also demonstrated high sensitivity to the mKRAS G12V neoantigen, as demonstrated by their activation in response to extremely low levels of mKRAS-G12V peptide. Concurrent expression of the PD1-41BB CSP significantly augmented TCR-T cell functionality, enabling sustained cytotoxicity targeting 3D tumor spheroids across multiple rounds of tumor exposure. This underscores the potent anti-cancer efficacy of the TCR-T cells.

From a safety perspective, all three 3S TCRs combined with the PD1-41BB CSP demonstrated favorable safety profiles, with no IFNγ secretion or cytotoxicity when exposed to healthy cells from major tissues or organs, affirming their selective cytotoxicity towards cancer cells while sparing healthy tissue from toxicity.

OmniAb Presents High-Throughput Single B-cell Screening xPloration® Data at the 20th Annual PEGS Boston Summit

On May 15, 2024 OmniAb, Inc. (Nasdaq: OABI) reported its participation in the 20th Annual PEGS Boston – The Essential Protein & Antibody Engineering Summit underway at the Omni Hotel (Press release, OmniAb, MAY 15, 2024, View Source [SID1234643364]). Earlier today the Company presented an overview of xPloration, a high-throughput single B-cell screening platform that leverages machine learning and Artificial Intelligence (AI), in a presentation titled "Deep Screening in Harmony with Artificial Intelligence for Bispecific Antibody Discovery."

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"xPloration enables large-scale data collection of massive, diverse antibody repertoires generated utilizing the Biological Intelligence built into our proprietary engineered animals, and facilitates efficient evaluation of AI selections from these repertoires," said Bob Chen, Ph.D., Senior Director, Discovery Systems. "The synergy between xPloration, OmniFlic, OmniClic, and OmniDeep enables new bispecific antibody discovery workflows for our partners. We are delighted that our innovative technology stack continues to make important impacts on partner R&D pipelines, and assists in delivering novel, highly effective therapeutic solutions to patients."

Today’s presentation included a case study demonstrating the ability to rapidly discover antibody panels from the Company’s OmniFlic and OmniClic platforms against a promising target called NKp46. These antibodies may be used by partners in a natural killer cell engager bispecific antibody. With xPloration, OmniAb’s scientific team screened tens of millions of cells and recovered thousands of unique antibody sequences. The team applied OmniDeep to help understand natural immune repertoires and to guide antibody selection and characterization, resulting in a large panel of high-affinity, potentially developable antibodies.

Dr. Chen’s presentation is available on the Scientific Publications section of OmniAb’s website.

For more information about OmniAb’s proprietary technologies, please visit www.omniab.com or contact our business development team at [email protected].

Tonix Pharmaceuticals to Present at the Alliance Global Partners (A.G.P) Healthcare Company Showcase

On May 15, 2024 Tonix Pharmaceuticals Holding Corp. (Nasdaq: TNXP) (Tonix or the Company), a fully-integrated biopharmaceutical company with marketed products and a pipeline of development candidates, reported that Seth Lederman, M.D., Chief Executive Officer, will participate virtually in a fireside chat at A.G.P.’s Healthcare Company Showcase on Tuesday, May 21, 2024, at 9:00 a.m. ET (Press release, TONIX Pharmaceuticals, MAY 15, 2024, View Source [SID1234643363]).

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A live webcast of the presentation can be found here. A replay of the presentation will also be available under the IR Events tab of the Tonix website at www.tonixpharma.com following the event.

Phio Pharmaceuticals Announces Completion of Dosing in First Patient Cohort in PH-762 Phase 1b Dose-Escalation Study

On May 15, 2024 Phio Pharmaceuticals Corp. (Nasdaq: PHIO), a clinical stage biotechnology company whose proprietary INTASYL siRNA gene silencing technology is designed to make immune cells more effective in killing tumor cells, reported progress on its Phase 1b clinical study for their lead compound PH-762 (Press release, Phio Pharmaceuticals, MAY 15, 2024, https://phiopharma.com/phio-pharmaceuticals-announces-completion-of-dosing-in-first-patient-cohort-in-ph-762-phase-1b-dose-escalation-study/ [SID1234643362]). Dosing of the first cohort of patients was completed and screening for the next dose cohort is on-going.

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Phio’s Phase 1b study (NCT 06014086) is a multi-center, dose-escalating clinical trial designed to evaluate the safety and tolerability of neoadjuvant use of intratumoral PH-762 in cutaneous squamous cell carcinoma, melanoma, or Merkel cell carcinoma. This study will assess the tumor response, and determine the recommended dose for further study of PH-762.

"This is exciting news for Phio and our lead compound PH-762 with the dosing of the 1st cohort completed, we look forward to advancing the study to bring an innovative treatment option to patients with skin carcinomas," said Robert Bitterman, CEO of Phio Pharmaceuticals.

Adaptimmune Reports Q1 2024 Financial and Business Updates

On May 15, 2024) – Adaptimmune Therapeutics plc (NASDAQ: ADAP), a company redefining the treatment of solid tumor cancers with cell therapy, reported financial results and business updates for the first quarter ended March 31, 2024 (Press release, Adaptimmune, MAY 15, 2024, View Source [SID1234643361]). The Company will host a live webcast at 8:00 a.m. EDT (1:00 p.m. BST) today.

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Adrian Rawcliffe, Adaptimmune’s Chief Executive Officer: "Support from the sarcoma community continues to highlight the high unmet medical need for new therapies for synovial sarcoma and we are making great progress preparing for the commercial launch of afami-cel on approval. Behind afami-cel, we plan to launch lete-cel for synovial sarcoma and MRCLS in 2026 with projected peak US sales of $400 million for our sarcoma franchise."

Sarcoma Franchise with afami-cel and lete-cel

U.S. FDA accepted the BLA for afami-cel for the treatment of advanced synovial sarcoma with priority review and a PDUFA date of August 4th, 2024
The BLA mid-cycle review meeting was held with FDA in April
FDA GCP Bioresearch Monitoring Program (BIMO) inspections have been conducted at Adaptimmune and at selected clinical sites that participated in the pivotal
SPEARHEAD-1 trial
FDA GMP Pre-license inspections (PLI) have taken place at the Company’s Navy Yard facility and at the lentiviral vector contract manufacturer’s facility
Preliminary plans for confirmatory evidence for afami-cel’s full approval were previously agreed with FDA, including Cohort 2
Adaptimmune expects to discuss post-marketing requirements and commitments at the late-cycle meeting which is scheduled for the second half of May
To date, the FDA has not requested an Advisory Committee meeting or a REMS program
The marketing application for the companion diagnostic for MAGE-A4 is currently under FDA review and is expected to be approved contemporaneously with the BLA
Adaptimmune is preparing to launch afami-cel on approval in the U.S. Initially, launch will be focused on 6-10 selected treatment centers ("Authorized Treatment Centers" or "ATCs") and will expand to up to ~30 ATCs.
100% of the customer facing commercial and medical affairs teams is now in place
Company launched www.Tcrtcell.com: an unbranded website aimed at educating healthcare providers about TCR T-cell therapy in solid tumors, including synovial sarcoma, and the role of biomarkers and testing to determine future treatments
The second product in Adaptimmune’s sarcoma franchise, lete-cel, is being investigated in the pivotal IGNYTE-ESO trial (NCT03967223), which at a planned interim analysis exhibited response in 18/45 of patients (ORR 40%). The primary efficacy endpoint requires 16/60 patients have responses, so this trial has met its primary endpoint for efficacy. The full pivotal analyses are anticipated in late 2024.
Lete-cel will enable Adaptimmune to expand its addressable synovial sarcoma patient population by targeting the NY-ESO cancer antigen, in addition to MAGE-A4 targeted by afami-cel, as well as treating Myxoid Round Cell Liposarcoma (MRCLS) patients.
Sarcoma franchise of afami-cel and lete-cel leverages same development and commercial footprint with US peak year sales projected to be up to $400 million
Data presentations
Data from pivotal SPEARHEAD-1 trial with afami-cel published in The Lancet: article entitled "Afamitresgene autoleucel for advanced synovial sarcoma and myxoid round cell liposarcoma (SPEARHEAD-1): an international, open-label, phase 2 trial"
Data from the planned interim analysis of the pivotal IGNYTE-ESO trial with lete-cel to be presented by Dr. Sandra P. D’Angelo, M.D., Sarcoma Medical Oncology, Memorial Sloan Kettering Cancer Center, in an oral presentation at ASCO (Free ASCO Whitepaper) entitled "Lete-cel in patients with synovial sarcoma or myxoid/round cell liposarcoma: Planned interim analysis of the pivotal IGNYTE-ESO trial" during the Developmental Therapeutics-Immunotherapy session in Hall D2 on June 3, 2024 at 11:30 a.m. CDT
Clinical pipeline

Uzatresgene autoleucel ("uza-cel", formerly ADP-A2M4CD8) is being investigated in the SURPASS-3 Phase 2 clinical trial (NCT05601752) for the treatment of platinum-resistant ovarian cancer. Uza-cel received FDA RMAT designation in 2022 for the treatment of patients with platinum resistant ovarian cancer. The SURPASS-3 trial is currently enrolling patients.
Cohorts in the Phase 1 SURPASS trial are ongoing for people with head & neck and urothelial (bladder) cancers with uza-cel in combination with standard of care checkpoint inhibitor therapy.
Preclinical pipeline

IND-enabling studies are underway for ADP-600 (PRAME) and ADP-520 (CD70) programs.
Wholly owned allogeneic pipeline advancing; process development in progress at Adaptimmune’s allogeneic manufacturing facility in Milton Park, UK.
Data presentation
Poster presented by George Pope, Ph.D., Associate Director Preclinical Safety at Adaptimmune, entitled "Development and Preclinical Characterization of an Engineered T-Cell Therapy Targeting PRAME-Expressing Solid Tumors" at the American Society of Gene & Cell Therapy (ASGCT) (Free ASGCT Whitepaper) Annual meeting
Corporate news

As announced earlier today, Adaptimmune has secured up to $125 million in debt financing with Hercules Capital with the first tranche of $25 million available upon closing; and an additional $25 million available upon afami-cel approval
Cash runway into late 2025 which includes current cash on hand, anticipated revenues from the launch of afami-cel, expected future income from partners and other non-dilutive capital sources including the Company’s new debt facility with Hercules Capital
Company announced that its strategic collaboration with Genentech was terminated
Financial Results for the three months ended March 31, 2024

Cash / liquidity position: As of March 31, 2024, Adaptimmune had cash and cash equivalents of $140.7 million and Total Liquidity[1] of $143.7 million, compared to $144.0 million and $146.9 million respectively, as of December 31, 2023.
Revenue: Revenue for the three months ended March 31, 2024, was $5.7 million compared to $47.6 million for the same period in 2023. Revenue has decreased in 2024, compared to the same period in 2023 primarily due to the termination of the Astellas collaboration in the first quarter of 2023, resulting in the remaining deferred income for the collaboration being recognized as revenue in March 2023.
Research and development (R&D) expenses: R&D expenses for the three months ended March 31, 2024, were $35.2 million compared to $25.5 million for the same period in 2023. R&D expenses in the three months ended March 31, 2024 increased in employee-related costs and additional costs associated with lease properties following the acquisition of TCR2 in June 2023 and a decrease in offsetting reimbursements receivable for research and development tax and expenditure credits.
General and administrative (G&A) expenses: G&A expenses for the three months ended March 31, 2024, were $19.7 million compared to $20.4 million for the same period in 2023. G&A expenses in the three months ended March 31, 2024 decreased due to restructuring and charges recognised in the first quarter of 2023 and a decrease in other corporate costs due to an increase in accounting, legal and professional fees incurred in relation to the TCR2 Therapeutics, Inc merger agreement that were not repeated in 2024, offset by an increase in depreciation due to leasehold improvements capitalised in 2023.
Net loss/profit: Net loss attributable to holders of the Company’s ordinary shares for the three months March 31, 2024, was $48.5 million ($(0.03) per ordinary share), compared to a profit of $1.0 million ($0.00 per ordinary share), for the same periods in 2023.
Financial Guidance
The Company believes that its existing cash, cash equivalents and marketable securities, together with anticipated revenues from the launch of afami-cel, expected future income from partners and other non-dilutive capital sources including the Company’s new debt facility with Hercules Capital announced earlier today, will fund the Company’s current operations into late 2025, as further detailed in the Company’s Quarterly Report on Form 10-Q for the three months ended March 31, 2024, to be filed with the Securities and Exchange Commission following this earnings release.