On May 8, 2026 Plus Therapeutics, Inc. (Nasdaq: PSTV) ("Plus" or the "Company"), a healthcare company developing and commercializing precision diagnostics and radiopharmaceuticals for central nervous system (CNS) cancers, reported a plenary session reviewing key clinical and translational data, including the Phase 1 ReSPECT-LM trial of REYOBIQ (rhenium Re186 obisbemeda) was presented at the 2026 American Association of Neurological Surgeons (AANS) Annual Scientific Meeting taking place May 1-4, 2026 in San Antonio, Texas.

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"This oral plenary session, which reviewed data collected to date, and included an overview of the ReSPECT-LM single dose escalation study, is an important validation of the clinical and translational evidence supporting REYOBIQ as a differentiated therapeutic approach for patients with leptomeningeal metastases, a devastating condition with no FDA-approved therapies. AANS is an important congress, and we are encouraged by these data being featured in such a prominent part of the conference," said Eric J. Daniels, M.D., M.B.A., Plus Therapeutics Chief Development Officer. "We continue to believe strongly in the potential of REYOBIQ in the clinical setting as we continue the ongoing multiple dose trial."

The oral presentation, titled, "¹⁸⁶Rhenium-Nanoliposomes (¹⁸⁶RNL) for the Treatment of Leptomeningeal Metastases: Translational Insights from Clinical and Preclinical Models," was delivered by Henriette U. Balinda, PhD, of UT Health San Antonio in a Plenary Session on Saturday, May 2, 2026.

Key Data Highlights

The Presentation highlighted the completed Phase 1 ReSPECT-LM study demonstrating:

Encouraging survival outcomes, with median overall survival of approximately 9 months in patients treated at the recommended Phase 2 dose, compared to historical survival of approximately 2–6 months
Robust anti-tumor activity, including high rates of circulating tumor cell (CTC) reduction and clinical benefit across evaluable patients
Favorable safety and tolerability profile, supporting advancement into later-stage clinical development
Highly targeted radiation delivery, with a target-to-off-target absorbed dose ratio exceeding 100:1, minimizing exposure to healthy tissue
In addition, translational analyses presented in the session demonstrate that REYOBIQ may induce immune remodeling within the tumor microenvironment, including activation of CD8+ T cells and enhancement of anti-tumor immune response, supporting potential future combination strategies with immunotherapies.

Currently, the ReSPECT-LM Phase 1 Multiple Dose trial is underway and enrolling patients at the University of Texas Health San Antonio. The primary objectives include characterizing safety and tolerability of multiple doses at defined intervals of REYOBIQ for patients of any primary solid tumor cancer with LM.

About REYOBIQ (rhenium Re186 obisbemeda)

REYOBIQ (rhenium Re186 obisbemeda) is a novel injectable radiotherapy specifically formulated to deliver direct targeted high dose radiation in CNS tumors in a safe, effective, and convenient manner to optimize patient outcomes. REYOBIQ has the potential to reduce off-target risks and improve outcomes for CNS cancer patients, versus currently approved therapies, with a more targeted and potent radiation dose. Rhenium-186 is an ideal radioisotope for CNS therapeutic applications due to its short half-life, beta energy for destroying cancerous tissue, and gamma energy for real-time imaging. REYOBIQ is being evaluated for the treatment of recurrent glioblastoma, leptomeningeal metastases, and pediatric brain cancer in the ReSPECT-GBM, ReSPECT-LM, and ReSPECT-PBC clinical trials. ReSPECT-GBM is supported by an award from the National Cancer Institute (NCI), part of the U.S. National Institutes of Health (NIH), and ReSPECT-LM is funded by a three-year $17.6M grant by the Cancer Prevention & Research Institute of Texas (CPRIT). The Company’s ReSPECT-PBC clinical trial for pediatric brain cancer is supported by a $3 million grant from the U.S. Department of Defense’s Peer Reviewed Cancer Research Program.

(Press release, Plus Therapeutics, MAY 8, 2026, View Source [SID1234665390])

On May 8, 2026 Allarity Therapeutics, Inc. ("Allarity" or the "Company") (NASDAQ: ALLR), a Phase 2 clinical-stage pharmaceutical company dedicated to developing stenoparib (2X-121)—a differentiated, dual PARP and WNT pathway inhibitor—reported that CEO Thomas Jensen has been invited to participate as a speaker at Precision Medicine Forum Europe 2026, taking place May 11–12, 2026, in Stockholm, Sweden.

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Presentation Details:

Event: Precision Medicine Forum Europe 2026
Presentation Title: Dual Inhibition of PARP and WNT: A Novel Drug-Biomarker Combination in Clinical Trials
Track: Oncology
Date: Monday, May 11, 2026
Time: 10:20–10:40 CEST

Mr. Jensen will discuss stenoparib’s dual mechanism of action and Allarity’s predictive biomarker, the Stenoparib DRP, based on a 414-mRNA gene expression signature, which is designed to identify patients who may be more likely to benefit from stenoparib, as well as the Company’s ongoing Phase 2 trials.

Mr. Jensen will be available for individual meetings during the conference to discuss Allarity’s clinical development strategy and potential business development opportunities.

About Stenoparib/2X-121
Stenoparib is an orally available, small-molecule dual-targeted inhibitor of PARP1/2 and tankyrase 1/2. At present, tankyrases are attracting significant attention as emerging therapeutic targets for cancer, principally due to their role in regulating the WNT signaling pathway. Aberrant WNT/β-catenin signaling has been implicated in the development and progression of numerous cancers. By inhibiting PARP and blocking WNT pathway activation, stenoparib’s unique therapeutic action shows potential as a promising therapeutic for many cancer types, including ovarian cancer, Small Cell Lung Cancer and colorectal cancer. Allarity has secured exclusive global rights for the development and commercialization of stenoparib, which was originally developed by Eisai Co. Ltd. and was formerly known under the names E7449 and 2X-121. Allarity has two ongoing Phase 2 trial protocols for stenoparib in Ovarian Cancer patients. In the first, patients who had had 2+ lines of therapy were enrolled on stenoparib and given drug twice daily. This protocol has been closed to further enrollment but continues for the enrolled patients who are still receiving benefit from stenoparib administration. The updated data from this study were presented at the AACR (Free AACR Whitepaper) special conference on advances in Ovarian Cancer in September 2025. Note that, as these data are from an ongoing trial, analyses may change as the study fully matures. An amended protocol designed expressly to capitalize on the emerging clinical experience with stenoparib in platinum resistant patients began enrolling patients in the summer of 2025. This amended protocol enrolls only platinum resistant or platinum-ineligible patients and is intended to support future pivotal development and eventual regulatory review. In parallel, a separate Phase 2 trial evaluating stenoparib in combination with temozolomide for relapsed small cell lung cancer (SCLC) began enrolling patients in early 2026 and is currently enrolling patients across multiple U.S. Veterans Administration (VA) sites.

About the Drug Response Predictor – DRP Companion Diagnostic
Allarity uses its drug-specific DRP to select those patients who, by the gene expression signature of their cancer, may have a high likelihood of benefiting from a specific drug. By screening patients before treatment, and only treating those patients with a sufficiently high, drug-specific DRP score, the therapeutic benefit rate may be enhanced. The DRP method builds on the comparison of sensitive vs. resistant human cancer cell lines, including transcriptomic information from cell lines, combined with clinical tumor biology filters and prior clinical trial outcomes. DRP is based on messenger RNA expression profiles from patient biopsies. The DRP platform has shown an ability to provide a statistically significant prediction of the clinical outcome from drug treatment in cancer patients across dozens of clinical studies (both retrospective and prospective). The DRP platform, which may be useful in all cancer types and is patented for dozens of anti-cancer drugs, has been extensively published in the peer-reviewed literature.

(Press release, Allarity Therapeutics, MAY 8, 2026, View Source [SID1234665391])

On May 8, 2026 Zhejiang Wenda Pharmaceutical Technology Co., Ltd., reported that its novel oral BET inhibitor NHWD-870 HCI officially received Breakthrough Therapy Designation from the China National Medical Products Administration (NMPA) for the proposed indication of advanced thoracic midline (NUT) carcinoma in patients who have failed prior chemotherapy. This milestone progress brings new targeted therapy hope to NUT carcinoma patients, a disease with extremely high malignancy and a very poor prognosis.

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NUT carcinoma is a rare, poorly differentiated carcinoma characterized by NUTM1 gene rearrangement. The disease progresses rapidly, with a median survival of only approximately 6.5 months. It commonly occurs in the lungs, head, and neck regions, and the median age of onset is only 23.6 years. Due to the lack of specificity in clinical manifestations and insufficient awareness among the public, the rates of misdiagnosis and missed diagnosis are extremely high, and most patients are already at an advanced stage at the time of diagnosis. Currently, no effective targeted drug for NUT carcinoma has been approved globally, and the treatment landscape is extremely dire.

The granting of Breakthrough Therapy Designation to NHWD-870 HCI is primarily based on the significant efficacy and survival benefits demonstrated in its Phase II clinical study. As of December 27, 2025, a total of 40 evaluable subjects with advanced NUT carcinoma were enrolled in the study. The data showed that the drug exhibited positive anti-tumor activity across different lesion sites: the objective response rate (ORR) in 20 patients with advanced thoracic NUT carcinoma reached as high as 45.00%; the median overall survival (mOS) for advanced thoracic NUT carcinoma patients and for all subjects both reached 9.33 months, representing a significant extension compared with standard chemotherapy regimens. Currently, some patients are still receiving ongoing treatment and close follow-up. In addition, preliminary safety data showed that the drug was generally well tolerated and held high potential for clinical application.

This Breakthrough Therapy Designation is of great significance for NUT carcinoma patients and represents a leapfrog advance in the field. For patients, it means that the regulatory review process for NHWD-870 HCI will be accelerated and the drug will reach the market sooner, enabling patients with advanced NUT carcinoma to receive targeted therapy earlier and escape the dilemma of having no effective drug, thereby significantly prolonging survival and improving quality of life. On the clinical level, the development and designation of this drug fill the gap in targeted treatment for NUT carcinoma and provide clinicians with a completely new treatment option. This not only drives the transformation of NUT carcinoma treatment from "symptomatic treatment" to "precision targeted therapy" but also provides valuable clinical experience for the future development of similar drugs.

Mr. Nenghui Wang, Founder of Wenda Pharma, stated: "We are delighted that our product has received Breakthrough Therapy Designation. This progress highlights China’s growing capabilities in innovative drug development for rare cancers. NHWD-870 not only brings hope to NUT carcinoma patients but also offers new avenues for exploring treatments for other rare malignancies."

Professor YIN Mingzhu, Director of the Midline (NUT) Carcinoma Specialty at the Affiliated Three Gorges Hospital of Chongqing University, noted, "NUT carcinoma once plunged countless patients and doctors into despair. The Breakthrough Therapy Designation for NHWD-870 is an important achievement integrating medical research and clinical practice. In the future, with the accelerated market entry of this drug, the treatment landscape of NUT carcinoma is expected to be completely transformed, injecting new momentum into the cause of rare disease diagnosis and treatment in our country."

(Press release, Wenda Pharma, MAY 8, 2026, View Source [SID1234665392])

On May 8, 2026 Inhibrx Biosciences, Inc. (Nasdaq: INBX) ("Inhibrx" or the "Company"), a clinical-stage biopharmaceutical company focused on developing therapeutics for oncology and rare diseases, reported that it will host a live webcast presentation on Monday, May 11, 2026 at 5:30 a.m. Pacific Time to provide interim results from the randomized, first-line Phase 2 portion of the HexAgon study, which is evaluating the safety and efficacy of INBRX-106, a hexavalent OX40 agonist, in combination with pembrolizumab (the combination arm) versus pembrolizumab monotherapy (the control arm) in first-line patients with treatment-naïve, PD-L1 positive (CPS ≥ 20) metastatic or unresectable recurrent Head and Neck Squamous Cell Carcinoma (HNSCC).

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Investors may join via the web: View Source or may listen to the call by dialing (1-888-880-3330). Please refer to Inhibrx or the conference ID 1841482 when calling in. Following the webcast, the presentation may be accessed through a link on the "Events and Presentations" section of Inhibrx’s website. The webcast will be available for 60 days following the event. Following the presentation, Inhibrx will also update its corporate presentation within the "Investors" section of its website at www.inhibrx.com.

About INBRX-106

INBRX-106 is a hexavalent agonist targeting OX40 (CD134), a costimulatory receptor on T-cells. Utilizing Inhibrx’s proprietary single-domain antibody (sdAb) platform, INBRX-106 is designed to achieve the high-order receptor clustering necessary for robust T-cell activation and survival, a feat that has eluded traditional bivalent antibody approaches.

(Press release, Inhibrx, MAY 8, 2026, View Source [SID1234665393])

On May 7, 2026 AIM ImmunoTech Inc. (NYSE American: AIM) ("AIM" or the "Company") reported the Final Primary Endpoint Report on Objective Response Rate data from a University of Pittsburgh Medical Center ("UPMC") Phase 2 clinical trial – in which AIM and Merck Sharp & Dohme ("Merck") are collaborators – evaluating Ampligen (rintatolimod) in combination with checkpoint inhibition and chemotherapy in recurrent ovarian cancer-data that may signal a major step forward in overcoming resistance to immunotherapy. The study aimed to improve clinical outcomes by overcoming the immunosuppressive tumor microenvironment characteristic of ovarian cancer through locoregional and systemic immune activation strategies. This clinical trial was financially supported by a Merck grant.

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Read more about the study at ClinicalTrials.gov: NCT03734692.

Topline results included:

50% Objective Response Rate (ORR), including 21% complete responses
79% Clinical Benefit Rate
Median Overall Survival of 32.5 months
Durable responses exceeding 70+ months in select patients
No Grade 4 or 5 toxicities observed
Read the full UPMC Primary Endpoint Report here.

Collection of additional secondary endpoint data including progression-free survival, time to disease progression and overall survival is expected to be completed in January 2027.

Robert P. Edwards, MD, McCall Chair of Obstetrics, Gynecology, and Reproductive Science at the University of Pittsburgh School of Medicine, stated: "This single-arm Phase 2 trial is the third in a series of consecutive studies evaluating IP chemotherapy or chemoimmunotherapy using this analytical approach. The addition of IP Ampligen and systemic PD-1 checkpoint inhibition to IP cisplatin chemotherapy resulted in a significant improvement in both clinical response rates and immune activation across highly comparable patient cohorts in the 3 trials."

AIM Chief Executive Officer Thomas K. Equels stated, "These results represent what we believe is a strong step forward in the potential to enhance treatment of recurrent ovarian cancer, if further studies support findings of relatively low toxicity, clinical benefit and durable response. Once again, data suggests that Ampligen may unlock the full potential of checkpoint immunotherapies. We are particularly encouraged by the durability of the observed responses. This supports our proposition that Ampligen has the potential to play a major role in solid tumor immuno-oncology – expanding the number of patients who benefit from checkpoint inhibitors across multiple cancer types, including ovarian cancer and pancreatic cancer. With strong intellectual property protection extending into 2039 and a growing body of positive clinical evidence, we believe we are well positioned to advance Ampligen into later-stage development and strategic partnerships."

(Press release, AIM ImmunoTech, MAY 7, 2026, View Source [SID1234665297])