IDEAYA Biosciences Announces Clinical Collaboration with Roche in MTAP-Deleted RAS-Mutant Pancreatic Cancer

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])

SOTIO Receives U.S. FDA Orphan Drug Designation for SOT106, a Potential Best-in-Class ADC for Sarcoma

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])

Kura Oncology and Kyowa Kirin Announce Publication in Blood of Ziftomenib plus Venetoclax / Azacitidine Combination in Patients with R/R NPM1-m AML

On June 2, 2026 Kura Oncology, Inc. (Nasdaq: KURA, "Kura") and Kyowa Kirin Co., Ltd. (TSE: 4151, "Kyowa Kirin") reported the publication in Blood of updated results from the relapsed/refractory (R/R) NPM1-mutated acute myeloid leukemia (NPM1-m AML) cohort of KOMET-007, a Phase 1a/b trial evaluating ziftomenib in combination with venetoclax and azacitidine (ven/aza). The publication reports nearly two-thirds of patients experienced clinically meaningful, deep and durable responses with a well-tolerated safety profile in adults with R/R NPM1-m AML.

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KOMZIFTI (ziftomenib) is approved by the U.S. Food and Drug Administration as monotherapy for adult patients with relapsed or refractory AML with a susceptible NPM1 mutation who have no satisfactory alternative treatment options. Ziftomenib in combination with ven/aza is investigational and has not been approved by the FDA.

"This analysis provides a more mature evaluation of ziftomenib in combination with venetoclax and azacitidine in patients with NPM1-mutated AML," said Eunice S. Wang, M.D., Chief of Leukemia, Roswell Park Comprehensive Cancer Center, and co-first senior author of the publication. "In the relapsed/refractory setting, outcomes with venetoclax-based regimens in patients with NPM1-mutant AML remain suboptimal, highlighting the substantial need for more effective therapies. These KOMET-007 results are notable for the depth and durability of response observed with the investigational three-drug combination. The favorable safety profile also supports the continued evaluation of this combination in a setting where better treatment options are urgently needed."

"As combination approaches become increasingly important in this setting, the data highlighted in this publication strengthen the case for ziftomenib as a backbone in NPM1-mutant AML," said Mollie Leoni, M.D., Chief Medical Officer of Kura Oncology. "Ziftomenib combined with ven/aza demonstrated deep molecular responses, durable remissions, and a generally manageable safety profile in R/R NPM1-m AML. These findings support our ongoing efforts to evaluate ziftomenib-based combinations across the treatment continuum, including in randomized studies designed to define the potential of ziftomenib in newly diagnosed disease."

KOMET-007 Results in R/R NPM1-m AML

The data include 64 response-evaluable patients with R/R NPM1-m AML from the ongoing KOMET-007 Phase 1a/b trial (NCT05735184), 27 of whom were treated in phase 1a dose escalation and 37 of whom were treated in phase 1b expansion, as of the January 16, 2026 data cutoff date. Patients had received 1 to 8 prior lines of therapy (median of 1), and 37 patients (55%) had prior venetoclax exposure.

Robust clinical activity was observed in patients with R/R NPM1-m AML across all ziftomenib dose levels, with nearly two-thirds of all patients experiencing clinically meaningful, deep, and durable responses. In addition, rapid responses were observed, with a median time to composite complete remission (CRc) of 3.9 weeks.

Venetoclax-Naïve Population (600 mg ziftomenib)

70% CRc rate (16/23) with 75% (9/12) central measurable residual disease (MRD) negativity (<0.01% threshold), demonstrating deep molecular responses
87% objective response rate (ORR) (20/23)
Median duration of CRc response of 9.2 months (95% CI, 5.8-NE)
Median overall survival (OS) not reached after median follow-up of 10.7 months (N=25)
Venetoclax-Experienced Population (600 mg ziftomenib)

24% CRc rate (6/25) with 50% (3/6) central MRD negativity (<0.01% threshold)
48% ORR (12/25)
Median duration of CRc response of 8.6 months (95% CI, 1.6-NE)
Median OS of 7.4 months after median follow-up of 9.9 months (N=26)
Safety in Both Populations at All Dose Levels (N=67)

The triplet combination was well tolerated, with a safety profile consistent with that reported for ven/aza alone
Low rates of differentiation syndrome (3%, 2/67) observed with the protocol-specified staggered dosing schedule of ven/aza before menin inhibition; both events resolved with protocol-specified mitigation
One case of ziftomenib-related QTc; the event resolved without dose interruption or dose change
Median time to neutrophil and platelet recovery were similar to ven-based regimens alone, supporting feasibility in combination regimens
"For people living with relapsed or refractory NPM1-mutated AML, the need for new treatment regimens remains significant," said Yoshifumi Torii, Ph.D., Chief Medical Officer of Kyowa Kirin. "These published findings in the journal Blood add to our understanding of ziftomenib in combination with venetoclax and azacitidine and reinforce our shared commitment with Kura Oncology to advancing this program with urgency and rigor for patients who may benefit."

The ongoing KOMET-007 Phase 1a/1b trial (NCT05735184) is evaluating ziftomenib in combination with ven/aza in multiple cohorts of newly diagnosed chemotherapy-ineligible AML and relapsed/refractory AML. The trial is also evaluating ziftomenib in combination with cytarabine plus daunorubicin (7+3) in patients with newly diagnosed NPM1-m or KMT2A-rearranged (KMT2A-r) AML, as well as ziftomenib combined with quizartinib plus 7+3 intensive chemotherapy in patients with newly diagnosed AML harboring FLT3-ITD/NPM1-m co-mutations.

Kura and Kyowa Kirin are continuing to evaluate ziftomenib across multiple combination regimens and treatment settings, including in the ongoing pivotal KOMET-017 Phase 3 trials in newly diagnosed NPM1-m and KMT2A-r AML.

(Press release, Kura Oncology, JUN 2, 2026, View Source [SID1234666369])

Early Data Show Highly Selective FGFR2 Inhibitor 3HP-2827 Active in Advanced CCA; Chinese Academy of Sciences’ Zhou Jian Comments on Potential for Patients With FGFR2 Alterations

On June 2, 2026 3H Pharmaceuticals reported new clinical data for its wholly owned candidate, 3HP-2827 at the 2026 American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) Annual Meeting. The ongoing study focuses on patients with advanced cholangiocarcinoma (CCA) and other solid tumors carrying FGFR2 alterations—an area of persistent and significant unmet need. The data showed that 3HP-2827, a highly selective FGFR2 inhibitor, demonstrated encouraging anti-tumor activity in patients with advanced CCA driven by FGFR2 fusions or rearrangements, as well as notable tumor shrinkage in FGFR2-mutated solid tumors. On May 31 in Chicago, on the sidelines of the ASCO (Free ASCO Whitepaper) meeting, eChinaHealth spoke with Academician Zhou Jian, President of Zhongshan Hospital, Fudan University. He shared his views on the current treatment landscape for FGFR2-altered CCA, the clinical profile and future potential of 3HP-2827, and the prospects for further advances in the field.

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Academician Zhou noted that CCA is a highly aggressive cancer, with incidence rising in both China and worldwide. For patients with advanced disease, the prognosis is extremely poor—even worse than for hepatocellular carcinoma. Currently, the standard first-line treatment for advanced CCA remains chemotherapy plus immunotherapy. In recent years, however, a growing number of new approaches have emerged. Drugs targeting IDH1 and FGFR, for instance, have already received approval. At this year’s ASCO (Free ASCO Whitepaper) Annual Meeting alone, more than 80 abstracts on CCA were presented, with FGFR2-targeted therapy emerging as a particularly active area of research. Earlier studies have validated the efficacy of FGFR2 inhibition in CCA, and as these targeted agents are refined, the efficacy data continue to improve. Looking ahead, FGFR2-directed therapy is expected to play a larger role in the treatment of advanced CCA, offering patients more precise and effective options.

3HP-2827, a novel and highly selective FGFR2 inhibitor, is being evaluated in a multicenter clinical study in China led by Academician Fan Jia and Professor Shen Lin, with RLY-4008 as the active comparator. To date, the efficacy of 3HP-2827 appears comparable to the early-stage clinical results reported for RLY-4008, and both agents have shown superior efficacy compared with pan-FGFR inhibitors. In addition, 3HP-2827 has demonstrated a favorable safety profile. Of note, the patient population in the current study was more heavily pretreated: 80% of patients had previously received an immune checkpoint inhibitor (ICI) in combination with chemotherapy, and 60% had undergone prior anti-angiogenic therapy. Additional clinical data will be important to further evaluate the potential of this approach.

Based on available data, both RLY-4008 and Pemigatinib have shown greater efficacy in the first-line treatment of advanced CCA than in the second-line setting. The latest data for single-agent RLY-4008 show an objective response rate (ORR) of 46.5% among 144 second-line patients, while the ORR reached 63.6% in a small cohort of 11 first-line patients—though the limited sample size in the first-line group requires cautious interpretation and further validation. For Pemigatinib, prior phase II and the most recent phase III data report an ORR of 35.5% in 146 second-line patients and 47.0% in 83 first-line patients. To date, 3HP-2827 has generated preliminary efficacy evidence in the second-line setting. Evaluating its single-agent activity in the first-line setting to pursue a first-line indication represents an important next step.

Academician Zhou said he expects the future first-line treatment paradigm for CCA to shift toward a multi-drug, multi-modality combination approach integrating chemotherapy, immunotherapy and targeted therapy. Such a strategy, he noted, is scientifically sound and could improve both treatment efficacy and patient outcomes. From a safety perspective, the main adverse reactions linked to 3HP-2827 are FGFR2-related toxicities affecting the skin and mucosa — a profile distinct from that of chemotherapy or immunotherapy. That difference suggests a low risk of overlapping toxicity when used in combination, supporting the potential for 3HP-2827 to be added to existing regimens. In addition, among patients with FGFR2 fusion- or rearrangement-driven CCA treated with 3HP-2827, two achieved complete disappearance of target lesions, and the majority experienced substantial tumor shrinkage. Because most CCA patients are no longer candidates for surgery at initial diagnosis, the pronounced tumor-shrinking effect of 3HP-2827 opens the door to exploring conversion therapy in the future — using preoperative single-agent treatment to downstage tumors and expand the pool of patients eligible for curative resection.

Currently, most FGFR2-targeted agents in clinical development are aimed at CCA patients with FGFR2 fusions or rearrangements. In contrast, patients with FGFR2-mutated solid tumors have few options, with no approved therapies to date. FGFR2 mutations occur across a wide range of solid tumors — including biliary tract cancers, gynecologic malignancies, melanoma, colorectal cancer, lung cancer, gastric cancer and urothelial carcinoma — representing a patient population larger than that of FGFR2 fusions or rearrangements. The longstanding lack of a targeted treatment for this group highlights a significant unmet medical need. The activity observed with 3HP-2827 suggests a potential new treatment approach for these patients.

The clinical data released by 3H Pharmaceuticals at the meeting showed that among patients with FGFR2-mutated solid tumors, 3HP-2827 achieved a best objective response rate (ORR) of 57.1% and a disease control rate (DCR) of 100%. Although the number of enrolled patients remains small at this stage, the cohort already includes multiple clinically relevant FGFR2 mutation sites, including N549K, Y375C, C382R and F276C. Looking ahead, the clinical development program for 3HP-2827 should continue to gather additional data in FGFR2-mutated solid tumors and initiate a multi-histology basket trial, with the goal of further evaluating its potential in this patient population.

In the interview, Academician Zhou Jian of Zhongshan Hospital, Fudan University, discussed the latest clinical data on 3HP-2827, a highly selective FGFR2 inhibitor, in patients with FGFR2-altered advanced CCA and other solid tumors. He noted that while chemotherapy plus immunotherapy remains the current standard first-line treatment for advanced CCA, FGFR2-targeted therapy is emerging as an important precision medicine approach. Looking ahead, Zhou recommended pursuing first-line treatment studies, combination therapy regimens and basket trials targeting FGFR2 mutations — strategies that could further expand the reach of precision oncology.

Note: 3HP-2827 is a highly selective FGFR2 inhibitor independently developed by 3H Pharmaceuticals. It works by specifically inhibiting FGFR2 phosphorylation, blocking the FGFR2 signaling pathway and producing anti-tumor activity. The drug is designed to offer a more effective and better-tolerated treatment option for patients with FGFR2 alterations, especially those who have developed resistance to prior therapies.

(Press release, 3H Pharmaceuticals, JUN 2, 2026, View Source [SID1234666385])

Greywolf Therapeutics reports durable clinical responses with first-in-class oral ERAP1 inhibitor GRWD5769 across six solid tumor types

On June 2, 2026 Greywolf Therapeutics, a clinical-stage biotech company advancing novel antigen modulation treatments for cancer and autoimmune diseases, reported clinical and translational results from six completed Phase 1b expansion cohorts of the EMITT-1 trial (NCT06923761) evaluating GRWD5769, a first-in-class oral ERAP1 inhibitor, in combination with cemiplimab in patients with secondary anti-PD-1 resistance or microsatellite stable colorectal cancer without liver metastases (MSS-CRC NLM).

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Data were presented in an oral session at the 2026 American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) Annual Meeting by Professor Fiona Thistlethwaite, Consultant Medical Oncologist at The Christie NHS Foundation Trust and Medical Director of the National Institute for Health and Care Research (NIHR) Manchester Clinical Research Facility at The Christie, and Principal Investigator of the EMITT-1 trial.

Professor Fiona Thistlethwaite, Consultant Medical Oncologist at The Christie NHS Foundation Trust and Medical Director of the National Institute for Health and Care Research (NIHR) Manchester Clinical Research Facility at The Christie said:

"What excites me about this trial is the combination of what we’re seeing – strong signals of efficacy across six tumor types that have shown great resistance to immunotherapy, with very few side effects. That’s unusual at such an early stage."

Highlights from the Phase 1b data

Objective Response Rates (ORR) of 13–36% across all six cohorts in patients with a median of 2 prior lines of therapy and documented secondary anti-PD-1 resistance (except MSS-CRC (NLM) where this therapy is not effective)
Durable Clinical Benefit of 18–55% across all cohorts (DCB — defined as complete response, partial response, or stable disease lasting ≥6 months) and Progression Free Survival duration of 33 wks in NSCLC, 16 wks in HCC and 33 wks in MSS-CRC (NLM) (with 8.8 months median follow-up and still maturing). These data are very encouraging in a setting where durable benefit is exceptionally rare.
GRWD5769 is well tolerated in cemiplimab combination, with no safety signals and most adverse events being Grade 1

Evaluable*
(n) Partial response(s) Overall response rate
(%) Durable clinical benefit
(%) Progression-free survival
(wks)
Urothelial carcinoma 14 5 36 36 8
Non-small cell lung cancer 14 3 21 55 33
Hepatocellular carcinoma (liver cancer) 14 2 14 32 16
Microsatellite stable colorectal cancer (no liver metastases) 12 2 17 51 33
Cervical 14 2 14 18 9
Head and neck squamous cell carcinoma 8 1 13 38 14

Tom Lillie, Chief Medical Officer of Greywolf Therapeutics, said:

"Seeing the combination of strong durable clinical benefit rates and sustained PFS in a population that had already failed anti-PD-1 therapy, and in MSS-CRC where it isn’t licensed, is a clinically meaningful signal. Critically, we’re seeing this alongside a tolerability profile that enables patients to remain on treatment for extended periods, providing excellent potential for GRWD5769 to be used in other combination therapies."

Peter Joyce, CEO and Co-founder of Greywolf Therapeutics, said:

"EMITT-1 has validated a mechanism that the field has long recognized as scientifically compelling but clinically unproven. We are now advancing into Stage 2 cohort expansions to inform a randomized Phase 2 study, and we believe this data positions GRWD5769 as a genuinely differentiated approach to two of the largest unmet needs in oncology — T cell exhaustion and tumor visibility to the immune system."

About GRWD5769

GRWD5769 is a first-in-class oral small molecule inhibitor of Endoplasmic Reticulum Aminopeptidase 1 (ERAP1), an enzyme that regulates tumor antigen presentation on MHC-I. By inhibiting ERAP1 on a cyclical Q3W on/off schedule, GRWD5769 aims to generate alternating antigenic repertoires to broaden T cell responses and prevent T cell exhaustion driven by chronic antigen exposure. The drug is administered as an oral capsule in combination with cemiplimab, an approved anti-PD-1 therapy.

About the EMITT-1 trial

EMITT-1 (NCT06923761) is a global Phase 1/2 study evaluating GRWD5769 in combination with cemiplimab across multiple solid tumor types. The Phase 1b expansion enrolled patients across six cohorts: non-small cell lung cancer (NSCLC), urothelial carcinoma (UC), hepatocellular carcinoma (HCC), MSS-CRC (without liver metastases), squamous cell carcinoma of the head and neck (SCCHN), and cervical cancer. All patients had secondary resistance to prior anti-PD-1 therapy, except for the MSS-CRC NLM cohort. The trial is ongoing across 28 centers in Australia, France, Spain, and the United Kingdom.

(Press release, Grey Wolf Therapeutics, JUN 2, 2026, View Source [SID1234666401])