On July 5, 2024 Hinova Pharmaceuticals Inc. (688302.SH), a leading biopharmaceutical company dedicated to developing innovative cancer therapies, reported that the U.S. Food and Drug Administration (FDA) has granted Fast Track designation for HP518, an investigational drug for the treatment of Androgen-receptor positive (AR+) triple-negative breast cancer (TNBC) (Press release, Hinova Pharmaceuticals, JUL 5, 2024, View Source [SID1234644692]). This designation is intended to expedite the development and review process for drugs that address serious conditions and fill an unmet medical need.

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About HP518

HP518 is a potent PROTAC AR degrader showing efficacy in AR+ TNBC. In preclinical IND-enabling studies, HP518 has demonstrated promising antitumor activity in AR+ TNBC animal models, showcasing significant tumor reduction and a favorable safety profile. The molecular subforms of TNBC are particularly aggressive forms of breast cancer that lack targeted treatment options, accounting for approximately 15-20% of all breast cancer cases, and are characterized by the absence of estrogen and progesterone receptors and HER2 expression. Notably, a significant proportion of TNBC cases (up to 50%) express the androgen receptor, highlighting the potential impact of AR-targeted therapies like HP518.

HP518 is an oral AR PROTAC protein degrader that degrades both wild-type AR and clinically relevant AR ligand-binding domain (LBD) mutants including L702H. Phase 1 clinical trial in Australia achieved several long term PSA50 and partial responses (PR), demonstrated HP518’s promising efficacy and acceptable safety profile in mCRPC patients. The clinical Phase 1/2 trial of HP518 for patients with mCRPC in China is ongoing.

FDA Fast Track Designation

The FDA’s Fast Track program is designed to facilitate the development and expedite the review of drugs that treat serious conditions and fill an unmet medical need. Fast Track designation enables more frequent communication with the FDA to discuss the drug’s development plan and ensures eligibility for Accelerated Approval and Priority Review if relevant criteria are met.

"We are thrilled to receive Fast Track designation from the FDA for HP518," said Dr. Yuanwei Chen, Chief Executive Officer of Hinova. "This designation underscores the significant need for new treatment options for patients with TNBC and highlights the potential of our investigational therapy to make a meaningful impact on this devastating disease. The discovery of HP518’s novel mechanism of action provides new hope for effective treatment. We look forward to working closely with the FDA to advance HP518 through the clinical development process as efficiently as possible."

Next Steps

Hinova plans to update in near future the existing IND (IND 164902) for TNBC development. The company is committed to accelerating the development of HP518 and bringing this promising therapy to patients in need.

On July 5, 2024 Zhiyi Biotech, a clinical-stage biotech leading in discovery and development of LBPs (live biotherapeutic products), reported positive results from a Phase 1 clinical trial in U.S. of SK10 (Press release, Guangzhou Zhiyi Biotech, JUL 5, 2024, View Source [SID1234644693]). SK10 is an innovative heat-killed Bacteroides fragilis product for Chemotherapy-induced Diarrhea (CID).

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This was a randomized, double-blind, placebo-controlled, sequential dose-escalation clinical study to evaluate the safety and tolerability of SK10 in healthy adult subjects. A total of 24 healthy subjects were enrolled in the study. All dose groups of SK10 were generally safe and well tolerated. All the TEAEs (treatment-emergent adverse event) were mild in severity without dose-dependent increase.

This promising result lays the foundation for SK10 as a potential novel drug for CID patients.

About SK10:

SK10, the first Bacteroides fragilis-based LBP obtained FDA IND approval, is also the first LBP of Next-generation probiotics developed by Chinese biotech company that approved for clinical trials by FDA. Studies have shown that SK10 can ameliorate 5-FU induced injury via mitochondrial apoptotic BCL2/BAX pathway, reduce inflammatory cytokines, and enhance mucosal barrier function, thereby effectively inhibiting the inflammatory response of intestinal epithelial cells induced by chemotherapy and the associated diarrhea symptoms.

Meanwhile, heat-killed Bacteroides fragilis has better safety in cancer patients and better commercialization performance.

About CID:

Cytotoxic drugs or targeted therapy can cause drug-associated diarrhea. However, available drugs for CID are limited. For example, loperamide, as a short-term symptomatic treatment, and octreotide, an intravenous/subcutaneous injection, serious adverse effects have been reported for both drugs. Hence the need for effective drugs is urgent.

On July 4, 2024 Roche (SIX: RO, ROG; OTCQX: RHHBY) reported that the phase II/III SKYSCRAPER-06 study, evaluating tiragolumab plus Tecentriq (atezolizumab) and chemotherapy versus pembrolizumab and chemotherapy as an initial (first-line) treatment for people with previously untreated, locally advanced unresectable or metastatic non-squamous non-small cell lung cancer, did not meet its primary endpoints of progression-free survival (PFS) at its primary analysis with a hazard ratio (HR) of 1.27 [95% CI: 1.02,1.57] and overall survival (OS) at its first interim analysis with a HR of 1.33 [95% CI: 1.02, 1.73], which was immature (Press release, Hoffmann-La Roche, JUL 4, 2024, View Source [SID1234644669]). The combination of tiragolumab plus Tecentriq and chemotherapy showed reduced efficacy in both PFS and OS compared to the comparator arm in the intent-to-treat population, which includes the phase II and phase III cohorts. The overall safety profile remains consistent with the safety profile previously observed for the combination of tiragolumab plus Tecentriq and chemotherapy, and no new or unexpected findings were identified. Based on these results, patients and investigators will be unblinded and we intend to halt the study. A communication will be sent to the investigators and results will be shared with health authorities and subsequently presented at an upcoming medical meeting.

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"These results are disappointing as it was our hope that this combination might yield improved outcomes for people living with metastatic non-squamous lung cancer," said Levi Garraway, M.D., Ph.D., Chief Medical Officer and Head of Global Product Development. "We are thankful to all of the patients and healthcare professionals involved in the study, and we will leverage the learnings to inform our scientific understanding of the anti-TIGIT pathway and new avenues in cancer research."

Ongoing phase III studies are investigating treatment settings and indications distinct from SKYSCRAPER-06. Based on today’s results, we will evaluate any relevant changes needed to the ongoing tiragolumab programme.

About SKYSCRAPER-06 study
SKYSCRAPER-06 is a global phase II/III, randomised, placebo-controlled and double-blinded study evaluating tiragolumab plus Tecentriq (atezolizumab) and chemotherapy as an initial (first-line) treatment versus pembrolizumab and chemotherapy in 542 people with non-squamous non- small cell lung cancer. Primary endpoints are overall survival (OS) and progression-free survival (PFS).

About tiragolumab
Tiragolumab is an investigational novel immune checkpoint inhibitor with an intact Fc region. Tiragolumab selectively binds to TIGIT, a novel inhibitory immune checkpoint which suppresses the immune response to cancer. Based on preclinical research, tiragolumab is thought to work as an immune amplifier with other cancer immunotherapies such as Tecentriq (atezolizumab). The TIGIT pathway is distinct but complementary to the PD-L1/PD-1 pathway. Dual blockade with tiragolumab and Tecentriq may help overcome immune suppression and restore the immune response.

About Tecentriq (atezolizumab)
Tecentriq is a cancer immunotherapy approved for some of the most aggressive and difficult-to-treat forms of cancer. Tecentriq was the first cancer immunotherapy approved for the treatment of a certain type of early-stage (adjuvant) non-small cell lung cancer (NSCLC), small cell lung cancer (SCLC) and hepatocellular carcinoma (HCC). Tecentriq is also approved in countries around the world, either alone or in combination with targeted therapies and/or chemotherapies, for various forms of metastatic NSCLC, certain types of metastatic urothelial cancer (mUC), PD-L1-positive metastatic triple-negative breast cancer (TNBC), BRAF V600 mutation-positive advanced melanoma and alveolar soft part sarcoma (ASPS).

Tecentriq is a monoclonal antibody designed to bind with a protein called programmed death ligand-1 (PD-L1), which is expressed on tumour cells and tumour-infiltrating immune cells, blocking its interactions with both PD-1 and B7.1 receptors. By inhibiting PD-L1, Tecentriq may enable the activation of T-cells. Tecentriq is a cancer immunotherapy that has the potential to be used as a foundational combination partner with other immunotherapies, targeted therapies and various chemotherapies across a broad range of cancers.

In addition to intravenous infusion, Tecentriq has been approved as a subcutaneous formulation in over 40 countries. The approved indications for Tecentriq SC mirror those of Tecentriq IV.

On July 4, 2024 HUTCHMED (China) Limited ("HUTCHMED") (Nasdaq/AIM:​HCM; HKEX:​13) reported that the New Drug Application ("NDA") for tazemetostat for the treatment of adult patients with relapsed or refractory ("R/R") follicular lymphoma ("FL") has been accepted for review and granted Priority Review by the China National Medical Products Administration ("NMPA") (Press release, Hutchison China MediTech, JUL 4, 2024, View Source [SID1234644677]).

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Tazemetostat is a first-in-class methyltransferase inhibitor of EZH2 developed by Epizyme, Inc. ("Epizyme"), an Ipsen company. Tazemetostat is approved by the U.S. Food and Drug Administration ("FDA") for the treatment of certain patients with R/R FL and certain patients with advanced epithelioid sarcoma ("ES") under the FDA accelerated approval program. It is also approved by the Japan Ministry of Health, Labour and Welfare (MHLW) for certain patients with R/R FL. HUTCHMED entered into a strategic collaboration to research, develop, manufacture and commercialize tazemetostat in China, Hong Kong, Macau and Taiwan.

This China NDA is supported by results from a multicenter, open-label, Phase II bridging study in China, and clinical studies conducted by Epizyme outside China.

Tazemetostat was approved for use in the Hainan Boao Lecheng International Medical Tourism Pilot Zone (Hainan Pilot Zone) in May 2022, under the Clinically Urgently Needed Imported Drugs scheme, for the treatment of certain patients with ES and FL consistent with the label as approved by the FDA. Tazemetostat was approved in the Macau Special Administrative Region ("SAR") in March 2023 and in the Hong Kong SAR in May 2024.

About Follicular Lymphoma
FL is a subtype of non-Hodgkin’s lymphoma ("NHL"). FL accounts for approximately 17% of NHL. In 2020, there were an estimated 16,000 and 13,000 new cases of FL in China and the U.S., respectively.[1],[2],[3]

About Tazemetostat Clinical Development in China
Tazemetostat is a first-in-class methyltransferase inhibitor of EZH2 developed by Epizyme, an Ipsen company. HUTCHMED entered into a strategic collaboration to research, develop, manufacture and commercialize tazemetostat in China, Hong Kong, Macau and Taiwan.

42 patients were enrolled in the Phase II bridging study in China. The primary objective was to evaluate the objective response rate ("ORR") of tazemetostat for the treatment of patients with R/R FL whose disease harbor EZH2 mutations. The secondary objectives included duration of response ("DoR"), progression-free survival (PFS), overall survival (OS), safety and pharmacokinetics of tazemetostat for the treatment of R/R FL patients whose disease do or do not harbor EZH2 mutations. Results of the study will be submitted for presentation at an upcoming medical conference (NCT05467943).

HUTCHMED is participating in Ipsen’s SYMPHONY-1 study, leading it in China. This is an international, multicenter, randomized, double-blind, active-controlled, 3-stage, biomarker-enriched, confirmatory Phase Ib/III study, which is designed to evaluate the safety and efficacy of tazemetostat in combination with rituximab and lenalidomide (R²) in patients with R/R FL after at least one prior line of therapy (NCT04224493).

About Tazemetostat approval in the United States
Tazemetostat is a methyltransferase inhibitor indicated in the United States for the treatment of:

Adults and pediatric patients aged 16 years and older with metastatic or locally advanced ES not eligible for complete resection.
Adult patients with R/R FL whose tumors are positive for an EZH2 mutation as detected by an FDA-approved test and who have received at least two prior systemic therapies.
Adult patients with R/R FL who have no satisfactory alternative treatment options.
These indications are approved under accelerated approval by the U.S. FDA based on ORR and DoR. Continued approval for these indications may be contingent upon verification and description of clinical benefit in confirmatory trials.
The most common (≥20%) adverse reactions in patients with ES are pain, fatigue, nausea, decreased appetite, vomiting and constipation. The most common (≥20%) adverse reactions in patients with FL are fatigue, upper respiratory tract infection, musculoskeletal pain, nausea and abdominal pain.

Please see the U.S. Full Prescribing Information for TAZVERIK (tazemetostat).

TAZVERIK is approved in Japan with the indication of relapsed or refractory EZH2 gene mutation-positive FL (only when standard treatment is not applicable).

TAZVERIK is a registered trademark of Epizyme Inc., an Ipsen company.

On July 4, 2024 NH TherAguix (NHT), a phase II clinical-stage biotechnology company specializing in the development of novel nanomedicine solutions for precision radiotherapy in oncology, reported the publication of a pioneering study in American Chemical Society (ACS) Nano, a high impact factor journal (Press release, NH TherAguix, JUL 4, 2024, View Source [SID1234644679]). The study, titled "Theragnostic gadolinium-based nanoparticles safely augment X-ray radiation effects in patients with cervical cancer", provides compelling evidence supporting the use of AGuIX nanoparticles to selectively enhance the effectiveness of radiotherapy in cervical cancer treatment.

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AGuIX: A nanodrug capable of improving the precision and effectiveness of radiotherapy

The culmination of over a decade of research, AGuIX nanoparticles are designed to meet the critical medical need for more effective cancer treatments, including advanced cervical cancer. These gadolinium-based nanoparticles enhance MRI contrast, allowing for precise tumor visualization, and significantly amplify the radiation dose delivered to tumor tissues, thereby improving the efficacy of radiotherapy.

Study Highlights:
Safety and Tolerance: The Phase I clinical trial involving 12 patients with locally advanced cervical cancer demonstrated that AGuIX nanoparticles have an excellent safety profile, with no dose-limiting toxicities and no severe side effects observed, especially when combined with brachytherapy or cisplatinum-based chemoradiation.

Enhanced Imaging and Treatment: Based on AGuIX quantification through MRI, treating physicians can determine the optimal radiotherapy dose for each patient.

Efficacy: All patients (n=12) achieved complete remission of the primary tumor, with only one instance of distant tumor recurrence, i.e. 8% compared to 30-40% recurrence according to historical studies. The study confirms the relationship between tumor accumulation, quantification, and encouraging tumor response signals: an estimated dose enhancement factor of about 15% at 2 Gy per tumor has been observed, a meaningful increase that generates a biological response sufficient to achieve tumor control and improved outcomes for patients.

Rapid Clearance: The nanoparticles are rapidly cleared from the body, minimizing potential side effects and allowing for efficient imaging and treatment cycles.

Dr. Olivier de Beaumont, CMO of NH TherAguix, emphasized the significance of these findings: "This study marks a significant advancement in the use of AGuIX as a novel option for cancer treatment. The ability to quantify AGuIX concentration in correspondence with tumor response signals with high precision opens new avenues for personalized medicine in oncology using companion MRI-based information."

Vincent Carrère, CEO of NH TherAguix, commented: "We are thrilled to announce this important publication in ACS Nano. I would like to thank the teams at IGR, especially Professors C. Chargari and E. Deutsch, for this remarkable clinical and translational work. It highlights the transformative potential of AGuIX in enhancing radiotherapy for cervical cancer patients. These promising results reinforce our commitment to advancing innovative cancer treatments and improving patient outcomes."