On June 3, 2026 Perspective Therapeutics, Inc. ("Perspective," the "Company," "we," "us," and "our") (NYSE AMERICAN: CATX), a radiopharmaceutical development company pioneering advanced treatments for cancers throughout the body, reported that the first meningioma patient was dosed with [212Pb]VMT-α-NET in the Company’s ongoing Phase 1/2a study.

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The new cohort is intended to evaluate the safety, dosimetry, and preliminary anti-tumor activity of lead-based alpha-particle therapy with [212Pb]VMT-α-NET for meningioma (LEMONαDE). The initiation of the meningioma cohort reflects The Company’s broader strategy to evaluate [212Pb]VMT-α-NET across somatostatin receptor subtype 2 (SSTR2)-expressing tumor types beyond neuroendocrine tumors (NETs).

Meningiomas are the most common primary brain tumors in adults, accounting for ~40% of all central nervous system tumors diagnosed annually in the United States1. Approximately 20% of all diagnosed meningioma cases are grades 2 and 3 by World Health Organization (WHO) 2021 grading,2 while approximately 30% of patients with diagnosed grade 1 disease either have inoperable disease or experience recurrence of their disease.3 Although surgery and radiation remain standard treatments, patients with recurrent, progressive, or unresectable disease often face limited therapeutic options and poor long-term outcomes.2 Meningiomas consistently express SSTR24, making them an attractive target for targeted radiopharmaceutical therapy.

About [212Pb]VMT-α-NET
Perspective designed [212Pb]VMT-α-NET to target and deliver 212Pb to tumor sites expressing SSTR2. The Company is conducting a multi-center, open-label, dose-escalation, dose-expansion study (clinicaltrials.gov identifier NCT05636618) of [212Pb]VMT-α-NET in patients with unresectable or metastatic SSTR2-positive tumors who have not received prior radiopharmaceutical therapies (RPT).

Interim analysis with a data cut-off date of April 17, 2026 was recently reported at the 2026 American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) Annual Meeting in May 2026, including efficacy data on half of the patients in Cohort 2 and both patients in Cohort 1. Initial efficacy data for the remaining patients in Cohort 2 and eight patients in Cohort 3 are pending, and submissions for presentations at additional medical conferences during 2026 are planned.

(Press release, Perspective Therapeutics, JUN 3, 2026, View Source [SID1234666431])

On June 3, 2026 IDEAYA Biosciences, Inc. (NASDAQ: IDYA), a precision medicine oncology company committed to the discovery and development of targeted therapeutics, reported it has entered into a clinical collaboration with Roche to evaluate the efficacy and safety of IDE892, its investigational, potential best-in-class PRMT5 inhibitor, in combination with Roche’s RG6505, a pan-RAS inhibitor, in patients with pancreatic ductal adenocarcinoma (PDAC) that carry an MTAP deletion. IDEAYA will sponsor the clinical trial combination study, and Roche will supply RG6505.

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"We are pleased to evaluate the clinical combination of IDE892 with RG6505 in MTAP-deleted RAS-mutant PDAC," said Yujiro S. Hata, President and Chief Executive Officer, IDEAYA Biosciences. "This collaboration aligns with our broader clinical strategy to evaluate rational combinations with assets in our MTAP-deletion portfolio, and there remains especially high unmet need in PDAC."

IDE892 was designed to be a potential best-in-class PRMT5 inhibitor and has demonstrated robust monotherapy regressions in MTAP-deleted preclinical models. IDEAYA is evaluating IDE892 in a Phase 1 dose escalation clinical trial in MTAP-deleted solid tumors and plans to initiate Phase 1 combination cohorts, in PDAC with RG6505 as well as in NSCLC and other solid tumors with IDE397, IDEAYA’s proprietary MAT2A inhibitor.

MTAP deletion is estimated to occur in up to 40% of PDAC and almost all MTAP-deleted PDAC harbor co-occurring RAS mutations. Combining a PRMT5 inhibitor with a pan-RAS inhibitor may have the potential to drive deeper and more durable responses for MTAP-deleted PDAC patients who currently have no approved targeted treatment options.

Under the clinical collaboration, IDEAYA and Roche each retain all commercial rights to their respective compounds, including as monotherapy and as combination therapies. There will be joint IDEAYA and Roche governance to oversee the clinical combination study. The clinical collaboration also has the ability to evaluate a combination triplet with IDE892, RG6505, and IDE397, IDEAYA’s Phase 2 MAT2A inhibitor, upon joint IDEAYA and Roche approval.

(Press release, Ideaya Biosciences, JUN 3, 2026, View Source [SID1234666416])

On June 3, 2026 SOTIO Biotech, a clinical-stage biopharmaceutical company owned by PPF Group, reported that the U.S. Food and Drug Administration (FDA) has granted Orphan Drug Designation (ODD) to SOT106 for the treatment of osteosarcoma, reinforcing its potential as a targeted therapy for this high unmet need population.

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SOT106 is a next-generation antibody-drug conjugate (ADC) targeting leucine-rich repeat-containing 15 (LRRC15), a clinically validated target broadly expressed across sarcoma subtypes and in tumor associated stroma. The program is designed to deliver an early and actionable clinical signal, with expansion potential across multiple solid tumors. Preclinical data demonstrate strong anti-tumor activity in both soft tissue and osteosarcoma models and favorable tolerability supporting a high therapeutic index. SOTIO expects to initiate a first-in-human clinical trial of SOT106 in the second half of 2026.

"Orphan Drug Designation for SOT106 underscores both the urgent need for new treatment options in osteosarcoma and the strength of our ADC platform," said Radek Spisek, M.D., Ph.D., chief executive officer of SOTIO. "Osteosarcoma is a devastating disease that has seen little therapeutic innovation over the past four decades. Treatment continues to rely on intensive chemotherapy regimens associated with significant toxicities and limited long-term benefit. We are encouraged by this recognition from the FDA and look forward to advancing SOT106 into the clinic later this year."

Sarcomas are a diverse group of cancers arising in bones and soft tissues and comprising more than 70 distinct subtypes. Their rarity and biological heterogeneity have made therapeutic innovation challenging, including the development of targeted approaches such as ADCs. Patients today are primarily treated with a combination of surgery, radiation and/or chemotherapy, yet outcomes remain poor for patients with aggressive, recurrent or metastatic disease. This need is especially clear in osteosarcoma, the most common bone cancer in children and adolescents, where a significant number of patients require amputation of the affected limb.

ODD provides several incentives to support the development of therapies for rare diseases and areas of high unmet need, including the potential for seven years of market exclusivity upon approval, waivers of certain regulatory fees, and enhanced interaction with and guidance from the U.S. FDA throughout the development process.

(Press release, SOTIO, JUN 3, 2026, View Source [SID1234666432])

On June 3, 2026 Ingenix, the AI and biology company built around a single question – "What would it take for AI to truly understand biology?" – reported a €13m seed-extension funding round led by Sofinnova Partners, with participation from Inovo VC and OTB VC.

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The funding will scale development of Ingenix’s Biological Reasoning Engine and broaden its work with pharma and biotech partners through the Qualified Access Program, launching today.

The dominant approach in AI for drug development, which trains larger models on larger datasets assuming biology will yield to scale, faces a structural problem. Biology is profoundly complex, fundamentally non-linguistic, and runs across modalities and biological scales. No single model, however large, can capture that on its own. Moreover, no single company holds all the data, across every modality and biological scale, to train one. Ingenix has built a different architecture, Modality Fusion, which integrates best-in-class models across modalities and biological scales, then reasons across their representations directly. The Biological Reasoning Engine is what Modality Fusion enables.

"This funding lets us extend the Biological Reasoning Engine to the partners and questions where it can do the most useful work," said Piotr Surma, CEO and co-founder of Ingenix. "We built Ingenix on the conviction that biology needs an AI architecture designed for biology and not a general-purpose model retrofitted to it. The early results have been stronger than we forecast, and we’re excited to extend the Engine to a select number of partners through the Qualified Access Program."

"It is no longer enough to just build models," added Simon Turner, Partner at Sofinnova Partners. "Ingenix is building the reasoning layer, the part that actually connects the biology, the chemistry, and the clinical data into something a scientist can interrogate and act on. That’s the hard bit, and that’s where the value compounds. We’re thrilled to back a team that gets that."

The Engine in Action: ADC Payload Prioritization

In a recent engagement, Ingenix applied its Biological Reasoning Engine to a dual-payload ADC prioritization problem for an oncology biotech which had thousands of possible payload configurations but lacked the experimental capacity to test them.

The Engine produced 15 candidate combinations. Under blind expert review by the biotech’s translational science team, the predictions broke down as follows:

5 were publicly known hypotheses.
2 were supported in existing literature but not widely cited.
3 had been confirmed by the biotech through internal experiments but never published and never disclosed to Ingenix.
5 were novel hypotheses not previously considered by the biotech team. Of these, the biotech flagged 3 as actionable candidates.
The double-payload ADC space is too new for any AI system to have seen meaningful training data on it. The engine reached its predictions by reasoning from first principles about the underlying biology, rather than by pattern-matching against prior examples.

In short, insights that had taken the biotech several years of research and millions of euros to develop were accomplished by the Engine in a matter of minutes.

Applications to the Qualified Access Program are now open at ingenix.ai/qap.

(Press release, Ingenix, JUN 3, 2026, View Source [SID1234666417])

On June 3, 2026, Abeona Therapeutics Inc. (the "Company") reported to have participated in a pre-Investigational New Drug application ("Pre-IND") meeting with the U.S. Food and Drug Administration ("FDA") regarding ABO-701, a recently licensed radically novel engineered T-cell therapy, targeting Prostate-Specific Membrane Antigen to treat prostate cancer. While official minutes of the meeting have not yet been received, we believe the meeting was constructive and continues to target submission of an IND application for ABO-701 in 2027, consistent with our previously stated timeline.

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We can provide no assurance that the FDA will not require additional studies, data, or information before accepting an IND submission for ABO-701, or that any IND submission, if submitted, will be accepted by the FDA or result in authorization to commence clinical trials. Our development plans remain subject to ongoing evaluation and may be revised based on, among other things, feedback received from the FDA, results of preclinical studies, manufacturing considerations, and other factors.

(Press release, Abeona Therapeutics, JUN 3, 2026, View Source [SID1234666436])