Quarterly Activities Report & Appendix 4C

On April 30, 2025 Starpharma, an innovative biotechnology company with two decades of experience in advancing dendrimer technology from the lab to the patient, reported its Quarterly Activities Report and Appendix 4C for the quarter ended 31 March 2025 (Q3 FY25) (Press release, Starpharma, APR 30, 2025, View Source [SID1234654130]).

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Starpharma’s Chief Executive Officer, Cheryl Maley, commented:
"It is almost 12 months since we announced our revised strategy. We have made significant progress towards achieving our objectives during this time, and we acknowledge that some outcomes are taking longer than we initially anticipated. The Starpharma team remains intensely focused on delivering on our strategic priorities, and we are committed to achieving the outcomes agreed with the Board in May 2024 with a high sense of urgency. Earlier this month, the Board and Leadership team convened to reflect on Starpharma’s progress and to reaffirm our strategic direction going forward

"Our top priorities this quarter have been to advance existing and potential new partnerships, develop the clinical program for DEP SN38 to get to market in the most time- and commerciallyeffective way and build robust pre-clinical data in our radio program that exemplifies the benefits of our dendrimer technology in radiopharmaceuticals.

"The dual goals of our radio program over the past months have focused on creating valuable preclinical data for the development of further enhanced HER2 assets and compelling data for potential partners interested in the application of the DEP platform to radiopharmaceuticals. This will delay the commencement of our clinical program; however, we are excited about the data generated thus far and the potential opportunities to partner in this area.

"This past quarter, we also launched new promotions for Viraleze in the UK and developed a program to make VivaGel BV available online in Europe in FY26.

"We continue managing costs effectively through clear prioritisation, resource management and implementing cost-saving strategies, whilst focusing on revenue generation opportunities such as partner licensing of the DEP platform and assets and product sales for Viraleze and VivaGel BV. We are also enhancing efficiency in drug development by leveraging outsourcing, automation, and exploring the use of AI.

"Whilst the past few months have been challenging across many sectors, including the Australian Biotech sector, we are confident that our versatile platform drug delivery technology offers multiple opportunities for value generation through partnerships and innovative asset development, which we aim to maximise through our strategic priorities.

"I would like to thank our shareholders for your patience and ongoing support as we work diligently to restore value to Starpharma investors."

Incyte Reports 2025 First Quarter Financial Results and Provides Updates on Key Clinical Programs

On April 29, 2025 Incyte (Nasdaq:INCY) reported 2025 first quarter financial results, and provides a status update on the Company’s clinical development portfolio (Press release, Incyte, APR 29, 2025, View Source [SID1234652312]).

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"The double-digit revenue growth in the first quarter driven by the continued growth of Jakafi and Opzelura and the recent launch of Niktimvo, puts us on track to achieve our full year objectives," said Hervé Hoppenot, Chief Executive Officer, Incyte. "We also continued to advance our innovative pipeline, which will be critical for driving long-term growth. The positive Phase 3 results for povorcitinib in hidradenitis suppurativa in addition to the proof-of-concept in chronic spontaneous urticaria, strengthens the potential of povorcitinib as a multibillion-dollar product addressing patient needs across the five indications currently in development."
Key Commercial Highlights
Jakafi(ruxolitinib):
Net product revenues for the first quarter 2025 of $709 million (+24% Y/Y):
▪Net product revenue growth in the first quarter of 2025 versus the same quarter in the prior year, was driven by an increase in paid demand, the positive impact of the Part D redesign under the Inflation Reduction Act, partially offset by growth in 340B, and less de-stocking compared to the first quarter of 2024. Jakafi inventory levels were within normal range at the end of the first quarter of 2025.
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Opzelura(ruxolitinib) cream:
Net product revenues for the first quarter 2025 of $119 million (+38% Y/Y):
▪U.S. net product revenue of $95 million in the first quarter of 2025 increased 20% compared to the first quarter of 2024 driven by patient demand and refills in both atopic dermatitis (AD) and vitiligo, partially offset by a reduction in channel inventory. Opzelura inventory levels were within normal range at the end of the first quarter of 2025.
▪Ex-U.S. net product revenues of $23 million in the first quarter of 2025 were primarily driven by continued growth in sales in Germany and France, as well as the recent launches in Italy and Spain.
Pipeline Updates
Myeloproliferative Neoplasms (MPNs) and Graft-Versus-Host Disease (GVHD) – key highlights
▪The Phase 1 studies evaluating mutCALR in myelofibrosis (MF) and essential thrombocythemia (ET) and JAK2V617Fi in MF are enrolling patients. Initial proof of concept data for both studies are anticipated in 2025.
▪A Phase 2 trial evaluating axatilimab (Niktimvo) in combination with ruxolitinib (Jakafi) in patients with newly diagnosed chronic GVHD is ongoing and enrolling patients.
▪A Phase 3 trial evaluating axatilimab in combination with corticosteroids in patients with newly diagnosed chronic GVHD is ongoing and enrolling patients.
MPN and GVHD Programs Indication and status
Ruxolitinib XR (QD)
(JAK1/JAK2) Myelofibrosis, polycythemia vera and GVHD
Ruxolitinib + INCB57643
(JAK1/JAK2 + BETi) Myelofibrosis: Phase 2
Ruxolitinib + axatilimab1
(JAK1/JAK2 + anti-CSF-1R)
Chronic GVHD: Phase 2
Steroids + axatilimab1
(Steroids + anti-CSF-1R)
Chronic GVHD: Phase 3
INCA33989
(mutCALR) Myelofibrosis, essential thrombocythemia: Phase 1
INCB160058
(JAK2V617Fi) Myelofibrosis: Phase 1

1 Clinical development of axatilimab in GVHD conducted in collaboration with Syndax Pharmaceuticals.
Other Hematology/Oncology – key highlights
▪Incyte plans to initiate Phase 3 studies for its potentially first-in-class CDK2 inhibitor (INCB123667), in ovarian cancer in 2025 and is also evaluating INCB123667 in combination with other treatments.
▪The Phase 3 study evaluating tafasitamab as first-line treatment for DLBCL is ongoing. The Phase 3 data are anticipated in the second half of 2025.
▪The Phase 1 studies evaluating KRASG12D and TGFßR2×PD-1 in solid tumors are ongoing and enrolling patients. Initial proof of concept data for both studies are anticipated in the second half of 2025.
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Heme/Oncology Programs Indication and status
Tafasitamab (Monjuvi/Minjuvi)
(CD19)
Relapsed or refractory diffuse large B-cell lymphoma (DLBCL): Phase 3 (B-MIND)
First-line DLBCL: Phase 3 (frontMIND)
Relapsed or refractory follicular lymphoma (FL): Phase 3 (inMIND)
Retifanlimab (Zynyz)1
(PD-1)
Squamous cell anal cancer (SCAC): Phase 3 (POD1UM-303)
Non-small cell lung cancer (NSCLC): Phase 3 (POD1UM-304)
MSI-high endometrial cancer: Phase 2 (POD1UM-101, POD1UM-204)
INCB123667
(CDK2i) Solid tumors with CCNE1 amplification/Cyclin E overexpression: Phase 1
INCB161734
(KRASG12D) Advanced metastatic solid tumors with a KRASG12D mutation: Phase 1
INCA33890
(TGFßR2×PD-1)2
Advanced or metastatic solid tumors: Phase 1

1 Retifanlimab licensed from MacroGenics.
2 Development in collaboration with Merus.
Inflammation and Autoimmunity (IAI) – key highlights
Ruxolitinib Cream
▪In March 2025, results from two Phase 3 studies (TRuE-PN1 and TRuE-PN2) evaluating ruxolitinib cream in patients with prurigo nodularis (PN) were presented in a late-breaking oral session at the American Academy of Dermatology annual meeting. The TRuE-PN1 study met the primary endpoint of a > 4-point improvement from baseline in Worst-Itch Numeric Rating Scale (WI-NRS4) at Week 12 and all key secondary endpoints. The TRuE-PN2 study did not reach statistical significance for the primary endpoint, resulting in the key secondary endpoints with nominal p-values. These key secondary endpoints still demonstrate positive trends for ruxolitinib cream 1.5% versus vehicle. These data will inform planned discussions with regulatory authorities on submission.
▪A Phase 3 trial for ruxolitinib cream in mild to moderate hidradenitis suppurativa (HS) is on track to initiate in the first half of 2025 following achieving alignment on the study design with FDA.
Povorcitinib (INCB54707)
▪In April 2025, Incyte announced positive topline results from the Phase 2 study evaluating povorcitinib in patients with chronic spontaneous urticaria (CSU). The study met the primary endpoint at Week 12 of change from baseline in the Urticaria Activity Score summed over 7 days (UAS7). Povorcitinib was well tolerated with no new safety signals observed. These data will support planned discussions with regulatory agencies and will be presented at an upcoming medical conference.
▪In March 2025, positive results from the Phase 3 studies (STOP-HS1 and STOP-HS2) of povorcitinib in patients with HS were presented and demonstrated that both studies met their primary endpoint of Hidradenitis Suppurativa Clinical Response (HiSCR) at Week 12 and at both tested doses (45mg and 75mg). In addition, at Week 12, patients treated with povorcitinib achieved deep levels of clinical response with a greater proportion achieving HiSCR75, reduction in flares, >3-point decrease in the Skin Pain Numeric Rating Scale (NRS) score and Skin Pain NRS30. Furthermore, povorcitinib demonstrated rapid onset of response, including rapid skin pain reduction. Additional longer-term data demonstrate that at Week 18, HiSCR rates continue to improve over Week 12 in patients treated with povorcitinib including high levels of response in those patients previously treated on placebo and crossed over to active povorcitinib treatment. These data support the planned regulatory submission of povorcitinib for the treatment of HS worldwide.
▪Two Phase 3 studies (STOP-PN1 and STOP-PN2) evaluating povorcitinib in patients with PN versus placebo are ongoing and enrolling patients.
▪A Phase 2 trial evaluating povorcitinib in asthma is ongoing and enrolling. Data are anticipated in the second half of 2025.
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IAI and Dermatology Programs Indication and status
Ruxolitinib cream (Opzelura)1
(JAK1/JAK2)
Atopic dermatitis: Phase 3 pediatric study (TRuE-AD3)
Hidradenitis suppurativa: Phase 2; Phase 3 expected to initiate in 2025
Prurigo nodularis: Phase 3 (TRuE-PN1, TRuE-PN2)
Povorcitinib
(JAK1) Hidradenitis suppurativa: Phase 3 (STOP-HS1, STOP-HS2)
Vitiligo: Phase 3 (STOP-V1, STOP-V2)
Prurigo nodularis: Phase 3 (STOP-PN1, STOP-PN2)
Chronic spontaneous urticaria: Phase 2
Asthma: Phase 2
INCA034460
(anti-CD122) Vitiligo: Phase 1

1 Novartis’ rights to ruxolitinib outside of the United States under our Collaboration and License Agreement with Novartis do not include topical administration.
Other – key highlights
•In February 2025, Incyte and Genesis Therapeutics, Inc. (Genesis) entered into a strategic collaboration focused on the research, discovery and development of novel small molecule medicines, with an initial focus on collaboration targets selected by Incyte. Incyte receives exclusive rights to develop and commercialize collaboration products leveraged through Genesis’ GEMS artificial intelligence (AI) platform.
Other Program Indication and Phase
Zilurgisertib
(ALK2) Fibrodysplasia ossificans progressiva: Pivotal Phase 2

2025 First Quarter Financial Results
The financial measures presented in this press release for the three months ended March 31, 2025 and 2024 have been prepared by the Company in accordance with U.S. Generally Accepted Accounting Principles ("GAAP"), unless otherwise identified as a Non-GAAP financial measure. Management believes that Non-GAAP information is useful for investors, when considered in conjunction with Incyte’s GAAP disclosures. Management uses such information internally and externally for establishing budgets, operating goals and financial planning purposes. These metrics are also used to manage the Company’s business and monitor performance. The Company adjusts, where appropriate, for expenses in order to reflect the Company’s core operations. The Company believes these adjustments are useful to investors by providing an enhanced understanding of the financial performance of the Company’s core operations. The metrics have been adopted to align the Company with disclosures provided by industry peers.
Non-GAAP information is not prepared under a comprehensive set of accounting rules and should only be used in conjunction with and to supplement Incyte’s operating results as reported under GAAP. Non-GAAP measures may be defined and calculated differently by other companies in our industry.
As changes in exchange rates are an important factor in understanding period-to-period comparisons, Management believes the presentation of certain revenue results on a constant currency basis in addition to reported results helps improve investors’ ability to understand its operating results and evaluate its performance in comparison to prior periods. Constant currency information compares results between periods as if exchange rates had remained constant period over period. The Company calculates constant currency by calculating current year results using prior year foreign currency exchange rates and generally refers to such amounts calculated on a constant currency basis as excluding the impact of foreign exchange or being on a constant currency basis. These results should be considered in addition to, not as a substitute for, results reported in accordance with GAAP. Results on a constant currency basis, as the Company presents them, may not be comparable to similarly titled measures used by other companies and are not measures of performance presented in accordance with GAAP.
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Financial Highlights
Financial Highlights
(unaudited, in thousands, except per share amounts)
Three Months Ended
March 31,
2025 2024
Total GAAP revenues $ 1,052,898 $ 880,889
Total GAAP operating income 205,168 91,898
Total Non-GAAP operating income 283,641 161,183
GAAP net income 158,203 169,548
Non-GAAP net income 229,459 132,719
GAAP basic EPS $ 0.82 $ 0.76
Non-GAAP basic EPS $ 1.18 $ 0.59
GAAP diluted EPS $ 0.80 $ 0.75
Non-GAAP diluted EPS $ 1.16 $ 0.58

Revenue Details
Revenue Details
(unaudited, in thousands)
Three Months Ended
March 31, %
Change
(as reported)
%
Change
(constant currency)1
2025 2024
Net product revenues:
Jakafi $ 709,412 $ 571,839 24 % NA
Opzelura 118,705 85,724 38 % 39 %
Iclusig 29,544 30,343 (3 %) — %
Pemazyre 18,440 17,676 4 % 6 %
Minjuvi/ Monjuvi 29,551 23,874 24 % 25 %
Niktimvo 13,613 — NM NA
Zynyz 3,009 467 544 % NA
Total net product revenues 922,274 729,923 26 % 27 %
Royalty revenues:
Jakavi 92,145 89,595 3 % 6 %
Olumiant 30,800 30,589 1 % 6 %
Tabrecta 6,413 5,234 23 % NA
Other 1,266 548 131 % NM
Total royalty revenues 130,624 125,966 4 %
Total net product and royalty revenues 1,052,898 855,889 23 %
Milestone and contract revenues — 25,000 — % — %
Total GAAP revenues $ 1,052,898 $ 880,889 20 %

NM = not meaningful
NA = not applicable
1 Percentage change in constant currency is calculated using 2024 foreign exchange rates to recalculate 2025 results.
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Product and Royalty Revenues Total net product and royalty revenues for the quarter ended March 31, 2025 increased 23% over the prior year comparative period. Total net product revenues for the quarter ended March 31, 2025 increased 26% over the prior year comparative period primarily driven by the following:
•Jakafi net product revenue increased 24% versus the prior year comparable period, driven by an increase in paid demand of 10% reflecting continued demand growth in all indications, the positive impact of the Part D redesign under the Inflation Reduction Act, partially offset by growth in 340B, and 7% favorable impact from less de-stocking compared to the first quarter of 2024. Jakafi inventory levels were within normal range at the end of the first quarter of 2025.
•Opzelura net product revenue increased 38% due to continued growth in new patient starts and refills in the U.S. with U.S. paid demand up 24% versus the first quarter of 2024, partially offset by a reduction in channel inventory, and increased contribution from ex-U.S. driven by continued uptake in Germany and France, as well as growth from the recent launches in Italy and Spain. Opzelura inventory levels were within normal range at the end of the first quarter of 2025.
•Minjuvi/Monjuvi net product revenue increased 24% as a result of the first quarter of 2025 reflecting three months of net product revenues in the U.S., compared to two months of net product revenue in the first quarter of 2024 due to the acquisition of U.S. rights to Monjuvi, which closed in February 2024.
•Niktimvo net product revenue driven by the commercial launch of the product during the first quarter of 2025.
Operating Expenses
Operating Expense Summary
(unaudited, in thousands)
Three Months Ended
March 31, %
Change
2025 2024
GAAP cost of product revenues $ 73,188 $ 60,956 20 %
Non-GAAP cost of product revenues1
66,945 54,959 22 %
GAAP research and development 437,279 429,260 2 %
Non-GAAP research and development2
400,020 388,437 3 %
GAAP selling, general and administrative 325,691 300,256 8 %
Non-GAAP selling, general and administrative3
302,292 277,335 9 %
GAAP loss (gain) on change in fair value of acquisition-related contingent consideration 11,572 (456) NM
Non-GAAP loss (gain) on change in fair value of acquisition-related contingent consideration — — — %
GAAP (profit) and loss sharing under collaboration agreements — (1,025) — %

1 Non-GAAP cost of product revenues excludes the amortization of licensed intellectual property for Iclusig relating to the acquisition of the European business of ARIAD Pharmaceuticals, Inc. and the cost of stock-based compensation.
2 Non-GAAP research and development expenses exclude the cost of stock-based compensation, MorphoSys transition costs, and Escient severance payments.
3 Non-GAAP selling, general and administrative expenses exclude the cost of stock-based compensation, MorphoSys transition costs, and Escient severance payments.
Cost of product revenues GAAP and Non-GAAP cost of product revenues for the quarter ended March 31, 2025 increased 20% and 22% respectively, compared to the same period in 2024 primarily due to increased royalty expense.
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Research and development expenses GAAP and Non-GAAP research and development expense for the quarter ended March 31, 2025 increased 2% and 3%, respectively, compared to the same period in 2024, reflecting continued investment in our late stage development assets and timing of certain expenses.
Selling, general and administrative expenses GAAP and Non-GAAP selling, general and administrative expenses for the quarter ended March 31, 2025 increased 8% and 9%, respectively, compared to the same period in 2024 primarily due to timing of consumer marketing activities and of certain other expenses.

Marengo Presents Expanded Clinical Monotherapy Activity of Invikafusp Alfa in Multiple PD-1 Resistant Tumors as a Clinical Plenary Oral at AACR 2025

On April 29, 2025 Marengo Therapeutics, Inc., a clinical-stage biotechnology company pioneering novel approaches for precision immunotherapy, reported new clinical and translational data from the ongoing STARt-001 Phase 1/2 trial of invikafusp alfa (STAR0602), presented as a clinical plenary oral session at the American Association for Cancer Research (AACR) (Free AACR Whitepaper) Annual Meeting 2025 (Press release, Marengo Therapeutics, APR 29, 2025, View Source [SID1234652333]).

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The presentation highlights strong evidence of meaningful clinical activity, robust immune activation in vivo, and a well-characterized safety profile, further supporting the momentum behind the ongoing Phase 2 study as well as the value proposition for developing invikafusp as monotherapy in PD1 resistant TMB-H cancers.

"Today’s data represent a major step forward for Marengo and for the field of IO to advance a new class of cancer immunotherapy: Immune Activation Inducers (IAI)," said Zhen Su, M.D., M.B.A., Chief Executive Officer of Marengo Therapeutics. "Invikafusp alfa’s ability to selectively activate and expand a key T cell subset to drive meaningful anti-tumor responses across a range of PD-1 resistant tumors gives us confidence in our precision T cell activation approach. The emerging clinical signals in both colorectal and lung cancers further underscore invikafusp’s pan-tumor potential and justify our focused expansion into these high-need indications."

"Colorectal cancer is less sensitive to immunotherapy except in a very small percentage of MSI-H tumors. The field has seen few, if any, immunotherapy agents achieve single-agent activity in PD-1 resistant colorectal cancer," said Josep Tabernero, M.D., Director of Vall d’Hebron Institute of Oncology (VHIO). "The clinical signals observed with invikafusp alfa in both CRC and other tumor types are highly encouraging and warrant further clinical investigation to fully realize the clinical potential of this novel T cell agonist approach."

Invikafusp alfa is Marengo’s first-in-class dual T cell agonist, designed with a bi-specific antibody format to selectively engage and activate the Vβ6 and Vβ10 subsets of T cells in vivo, promoting durable anti-tumor immunity.

Updated Findings from the STARt-001 Clinical Plenary Presentation:

Clinically meaningful anti-tumor activity as monotherapy in anti-PD(L)1-resistant tumors at the recommended Phase 2 dose (RP2D) of 0.08 mg/kg:
61% disease control rate in heavily pretreated, PD-1 resistant tumors dosed at 0.08 or 0.12 mg/kg
52% tumor regression rate observed across multiple tumor types, including colorectal cancer (CRC), non-small cell lung cancer (NSCLC), cervical, squamous cell carcinoma of the head and neck (SCCHN), and melanoma
Objective responses in colorectal cancer and NSCLC:
3 responders out of 10 TMB-high metastatic CRC patients (across RAS wild-type, RAS mutant, and MSI-H subtypes)
1 additional responder with 73% tumor regression out of 2 anti-PD(L)1-resistant TMB-high NSCLC patients
Mechanism of Action and Translational Insights:
Invikafusp promoted potent, selective expansion of peripheral CD8+ Vβ6/Vβ10 T cells, which acquired a novel "memory-like effector" phenotype in both blood and tumor tissue
Expanded and activated Vβ T cells in post treatment tumor tissues consistent with enhanced anti-tumor function
Safety Profile:
Consistent with a selective T cell activation mechanism
Adverse events were generally transient and manageable with supportive care
Based on these early clinical and preclinical findings, the U.S. Food and Drug Administration has granted Fast Track Designation to invikafusp alfa for the treatment of patients with TMB-high colorectal cancer.

The Phase 2 portion of the STARt-002 trial is actively enrolling patients across multiple tumor types, including TMB-H metastatic colorectal cancer, MSI-H and TMB-H tissue-agnostic solid tumors.

Microbiotica reveals novel mechanisms showing how the microbiome can improve immunotherapy response based on MB097, a clinical-stage drug candidate being evaluated in combination with KEYTRUDA® (pembrolizumab) in patients with advanced melanoma

On April 29, 2025 Microbiotica, a clinical-stage biopharma company developing a pipeline of oral precision microbiome medicines called live biotherapeutic products (LBPs), reported new data on the mechanism of action of MB097 at the American Association for Cancer Research (AACR) (Free AACR Whitepaper) annual meeting held in Chicago, April 25-30 (Press release, Microbiotica, APR 29, 2025, View Source [SID1234652313]). MB097 is an LBP in development as a co-therapy for immune checkpoint inhibitors (CPI) such as MSD’s (Merck & Co., Inc., Rahway, NJ, USA) anti-PD-1 therapy, KEYTRUDA (pembrolizumab).

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The composition of a patient’s intestinal microbiome is known to impact the response to immunotherapies, most noticeably CPI, but the mechanisms are poorly understood. MB097 comprises nine different species of gut commensal bacteria, all linked to positive CPI response in multiple clinical studies. Microbiotica has developed in vitro human systems using primary immune cells to investigate how gut bacteria modulate the immune response to cancer. These assays have demonstrated that three of the MB097 strains induce dendritic cells to produce high levels of IL-12, which in turn stimulates Cytotoxic T Lymphocytes and NK cells with potent tumour cell killing activity. Dr Mat Robinson, Microbiotica’s Senior Vice-President Research, presented these novel findings in a poster entitled ‘Clinical response to immune checkpoint inhibitors in melanoma is associated with distinct gut bacterial species that promote anti-tumour immunity by different mechanisms’. The poster can be accessed here.

Dr Mat Robinson, Microbiotica’s SVP Research, said, "These exciting results start to unravel the complex biology of how gut commensal bacteria drive immune checkpoint inhibitor responses. The induction of dendritic cells to produce IL-12 complement the recently reported data showing that other MB097 strains release metabolites that enhance immune-mediated cancer cell killing. Together, these findings demonstrate that the different strains within MB097 can interact with the immune system of cancer patients in multiple ways to enhance immunotherapy efficacy."

MB097 is being tested in an international Phase 1b clinical study, in combination with KEYTRUDA (pembrolizumab), MSD’s anti-PD-1 therapy, in patients with cutaneous melanoma who have failed to respond to immunotherapies. Data readout is expected by the end of 2025.

D3 Bio Announces Nature Medicine Publication and AACR 2025 Presentation Highlighting D3S-001 as a Next-Generation KRAS G12C Inhibitor with Best-in-Class Potential

On April 29, 2025 D3 Bio, a clinical-stage biotechnology company pioneering precision oncology therapies, reported the simultaneous publication of landmark clinical data on its lead investigational drug D3S-001 in Nature Medicine and oral presentation of updated results at the 2025 American Association for Cancer Research (AACR) (Free AACR Whitepaper) Annual Meeting (Press release, D3 Bio, APR 29, 2025, View Source [SID1234652334]). These data affirm D3S-001’s differentiated mechanism of action, favorable safety profile and compelling efficacy in patients with KRAS G12C mutation–addicted cancers, including patients previously treated with first-generation KRAS G12C inhibitors.

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Promising Efficacy in G12Ci-Naïve and Resistant Patients

In a Phase 1a/1b clinical study (NCT05410145), D3S-001 demonstrated an overall objective response rate (ORR) of 73.5% in KRAS G12C inhibitor-naïve patients across multiple tumor types, including:

66.7% in non–small cell lung cancer (NSCLC)
88.9% in colorectal cancer (CRC)
75.0% in pancreatic ductal adenocarcinoma (PDAC)
Additionally, in 20 patients with NSCLC who had previously been treated with and progressed on first-generation G12C inhibitors, including sotorasib and adagrasib, D3S-001 achieved a 30.0% overall response rate (ORR) and 80.0% disease control rate (DCR), providing direct clinical evidence of its ability to overcome acquired resistance to first-generation G12Ci therapies.

"These findings demonstrate that D3S-001 fulfills the defining qualities of a next-generation KRAS G12C inhibitor: fast and complete target engagement, favorable safety, consistent and promising efficacy across all tumor types, brain penetration, and ability to overcome first-generation resistance," said Byoung Chul Cho, MD, PhD, lead and co-supervisory author and Professor and Head of Yonsei Cancer Center, Yonsei University College of Medicine. "We believe it is a truly new-generation KRAS G12C inhibitor with the potential to overcome the limitations of the first-generation inhibitors and become a cornerstone therapy for KRAS G12C-driven cancers."

AACR 2025 Data Highlights the Activity of D3S-001 in Overcoming Resistance in Patients with NSCLC Who Have Progressed on First-Generation G12C Inhibitors

At AACR (Free AACR Whitepaper) 2025, D3 Bio shared updated results from a Phase 2 expansion cohort of NSCLC patients who had previously been treated with FDA-approved or other experimental G12C inhibitors. The compound demonstrates encouraging clinical benefits in this patient population. The data include:

60% of patients experienced tumor shrinkage
30% achieved partial responses
80% disease control rate
11 of 14 ctDNA-positive patients achieved >90% G12C MAF reduction, with 6 achieving partial response (a 43% response rate in the ctDNA-positive population)
Responses were observed in patients with KRAS G12C amplification, a known resistance mechanism to first-generation inhibitors, consistent with previous preclinical observations
The results support D3S-001’s unique ability to overcome molecular resistance in a population with urgent unmet medical needs.

"The clinical data, published at Nature Medicine and presented at AACR (Free AACR Whitepaper), validates D3S-001 as a promising treatment for patients with KRAS G12C–driven tumors, both naïve and refractory, to first-generation inhibitors," said Tony Mok, MD, co-supervisory author of the Nature Medicine paper, Professor of Clinical Oncology at the Chinese University of Hong Kong, and a global thought leader in targeted therapy for lung cancer. "Its potential to induce compelling responses in these challenging cases offers hope for a patient population with limited treatment options."

"At D3 Bio, we believe that solid science, combined with strong collaboration with global thought leaders, is the foundation for driving the field forward," said George Chen, MD, Founder, Chairman, and CEO of D3 Bio. "Our Cancer Discovery paper reported the new mechanism and properties of D3S-001 in preclinical settings, and now we are excited to witness the nearly seamless translation of these important features into the clinic. The continued clinical advancement of D3S-001 reflects not only the innovation behind its design, but also the strength of these collaborations to bring meaningful therapies to patients worldwide."

About D3S-001

D3S-001 is a next-generation KRAS G12C inhibitor designed to achieve rapid and complete KRAS G12C target engagement. In preclinical investigations, D3S-001 has demonstrated high covalent potency, complete engagement of KRAS G12C at clinically relevant doses and CNS penetration properties. D3S-001 is currently in a Phase II global clinical trial in patients with advanced solid tumors harboring KRAS G12C mutations, including NSCLC, CRC, and other tumor types. Key publications:

D3S-001, a KRAS G12C Inhibitor with Rapid Target Engagement Kinetics, Overcomes Nucleotide Cycling, and Demonstrates Robust Preclinical and Clinical Activities. Cancer Discov (2024) 14 (9): 1675–1698.
D3S-001 in advanced solid tumors with KRAS G12C mutations. Nature Medicine (View Source)