Portage Biotech (ATON) FDA Approvals $0.33 +0.01 (+3.75%) Closing price 04/20/2026Extended Trading$0.33 0.00 (0.00%) As of 04/20/2026 07:59 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more. Add Compare Share Share FDA Events Stock AnalysisAnalyst ForecastsChartEarningsFDA EventsHeadlinesSEC FilingsTrendsBuy This Stock Portage Biotech's Drug in the FDA Approval ProcessThis section highlights FDA-related milestones and regulatory updates for drugs developed by Portage Biotech (ATON). Over the past two years, Portage Biotech has reported clinical trial outcomes, regulatory submissions, approvals, and other FDA events for drugs and therapies such as TT-4. For definitions of regulatory abbreviations such as NDA, BLA, or PDUFA, see the event status legend. TT-4 FDA Regulatory Events TT-4 is a drug developed by Portage Biotech for the following indication: in mesothelioma. This drug is under review by the U.S. Food and Drug Administration (FDA). Below is a timeline of key regulatory milestones for this therapy. Provided Update - November 12,2025Provided Update Drug: TT-4Announced Date: November 12, 2025Indication: in mesotheliomaAnnouncementAlphaTON Capital Corp announced a non-binding Letter of Intent (LOI) between Australia's Asbestos and Dust Diseases Research Institute (ADDRI) and Tarus Therapeutics, LLC to conduct an investigator-initiated clinical trial evaluating TT-4, Cyncado's selective A2B receptor antagonist, in mesothelioma.AI SummaryAlphaTON Capital’s oncology unit, Cyncado Therapeutics, announced a non-binding letter of intent with Australia’s Asbestos and Dust Diseases Research Institute (ADDRI) to run an investigator-initiated trial of TT-4, Cyncado’s selective A2B receptor antagonist, in mesothelioma. The Australian trial is planned to enroll about 50 patients and would run alongside Cyncado’s planned U.S. activities. Cyncado has agreed to provide TT-4 and limited support, subject to a definitive agreement and customary approvals. The study aims to address the urgent need for effective options after first-line therapy, since there is no widely accepted second-line standard and outcomes remain poor. The trial builds on preclinical data supporting TT-4’s use in mesothelioma. It will be led by A/Prof Steven Kao (Chris O’Brien Lifehouse/ADDRI) and Dr. Melvin Chin (Sir Charles Gairdner Hospital/NCARD), with Australia seen as a compelling setting due to its high mesothelioma burden.Read Announcement Portage Biotech FDA Events - Frequently Asked Questions Has Portage Biotech received FDA approval? As of now, Portage Biotech (ATON) has not received any FDA approvals for its therapy in the last two years. What drugs has Portage Biotech submitted to the FDA? In the past two years, Portage Biotech (ATON) has reported FDA regulatory activity for TT-4. What is the most recent FDA event for Portage Biotech? The most recent FDA-related event for Portage Biotech occurred on November 12, 2025, involving TT-4. The update was categorized as "Provided Update," with the company reporting: "AlphaTON Capital Corp announced a non-binding Letter of Intent (LOI) between Australia's Asbestos and Dust Diseases Research Institute (ADDRI) and Tarus Therapeutics, LLC to conduct an investigator-initiated clinical trial evaluating TT-4, Cyncado's selective A2B receptor antagonist, in mesothelioma." What conditions do Portage Biotech's current drugs treat? Currently, Portage Biotech has one therapy (TT-4) targeting the following condition: in mesothelioma. 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FDA EventsCybin FDA EventsIonis Pharmaceuticals FDA EventsREGENXBIO FDA EventsViking Therapeutics FDA EventsWAVE Life Sciences FDA Events FDA Event Stage Terminology & Abbreviation Guide NDA: New Drug Application ANDA: Abbreviated New Drug Application sNDA: Supplemental New Drug Application BLA: Biologics License Application sBLA: Supplemental Biologics License Application FDA Approved: Approved by the FDA EMA: European Medicines Agency CE Mark: European Union Certification NMPA: China National Medical Products Administration MHLW: Japanese Ministry of Health FDA Meeting: Consultation with FDA Pre-IND: Pre-Investigational New Drug Meeting Breakthrough Therapy: Special FDA designation for promising therapies Fast Track: Accelerated FDA approval pathway Orphan Drug: Designation for rare disease treatments RPD: Rare Pediatric Disease Designation RMAT: Regenerative Medicine Advanced Therapy DSMB Review: Data Safety Monitoring Board Review IDMC Review: Independent Data Monitoring Committee MAA: MHRA Marketing Authorization Application RTF: Refusal to File (Rejected Application) 510(k): FDA Clearance for Medical Devices Rolling Submission: Staggered regulatory review process Related Companies Aligos Therapeutics FDA Events VistaGen Therapeutics FDA Events Rocket One Inc. 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Provided Update - November 12,2025Provided Update Drug: TT-4Announced Date: November 12, 2025Indication: in mesotheliomaAnnouncementAlphaTON Capital Corp announced a non-binding Letter of Intent (LOI) between Australia's Asbestos and Dust Diseases Research Institute (ADDRI) and Tarus Therapeutics, LLC to conduct an investigator-initiated clinical trial evaluating TT-4, Cyncado's selective A2B receptor antagonist, in mesothelioma.AI SummaryAlphaTON Capital’s oncology unit, Cyncado Therapeutics, announced a non-binding letter of intent with Australia’s Asbestos and Dust Diseases Research Institute (ADDRI) to run an investigator-initiated trial of TT-4, Cyncado’s selective A2B receptor antagonist, in mesothelioma. The Australian trial is planned to enroll about 50 patients and would run alongside Cyncado’s planned U.S. activities. Cyncado has agreed to provide TT-4 and limited support, subject to a definitive agreement and customary approvals. The study aims to address the urgent need for effective options after first-line therapy, since there is no widely accepted second-line standard and outcomes remain poor. The trial builds on preclinical data supporting TT-4’s use in mesothelioma. It will be led by A/Prof Steven Kao (Chris O’Brien Lifehouse/ADDRI) and Dr. Melvin Chin (Sir Charles Gairdner Hospital/NCARD), with Australia seen as a compelling setting due to its high mesothelioma burden.Read Announcement
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