A Phase 1/2, Open-Label, Dose-Escalation and Cohort-Expansion Study Evaluating the Safety, Pharmacokinetics, and Therapeutic Activity of OBI-992 in Subjects With Advanced Solid Tumors

This is a 2-part trial: Part A (Dose Escalation) is designed to establish the maximum tolerated dose (MTD) and recommended phase 2 dose (RP2D) of OBI-992 (Anti-TROP2 antibody drug conjugate, anti-TROP2 monoclonal antibody-cleavable peptide linker-exatecan) as monotherapy. Part B (Cohort Expansion) is intended to further characterize the safety and preliminary clinical activity profile of the RP2D of OBI-992 in subjects with advanced solid tumors.

Start Date12 Jun 2024

Sponsor / Collaborator

OBI Pharma, Inc.

NCT05442060 / RecruitingPhase 2

A Randomized, Open-Label, Phase 2 Study to Evaluate OBI-833/OBI-821 in Combination With First-Line Erlotinib in Patients With EGFR-Mutated, Globo H-Positive, Locally Advanced or Metastatic Non-Small Cell Lung Cancer

This study is a randomized, active control, open-label, phase 2 trial. Erlotinib-treated NSCLC patients will be screened for Globo H, and only Globo H+ (H score ≥ 100) subjects are eligible for the study. Eligible subjects who have been treated with 3±1 months of first-line erlotinib and have achieved stable disease (SD) or partial response (PR) status will be randomized in the ratio of 1:1 to receive erlotinib alone or erlotinib plus OBI-833/OBI-821 therapy.

Start Date27 Jul 2022

Sponsor / Collaborator

OBI Pharma, Inc.

CTR20211603 / RecruitingPhase 3

GLORIA研究：一项抗Globo-H疫苗Adagloxad Simolenin (OBI-822) /OBI-821治疗高危早期-Globo H-阳性的三阴性乳腺癌患者的III期、随机、开放性研究

[Translation] GLORIA study: A phase III, randomized, open-label study of the anti-Globo-H vaccine Adagloxad Simolenin (OBI-822)/OBI-821 in patients with high-risk early-stage Globo H-positive triple-negative breast cancer

主要目的确定研究人群中adagloxad simolenin (OBI-822)/OBI-821治疗对IDFS改善的影响。次要目的研究的次要目的是： 1. 确定研究人群中adagloxad simolenin (OBI-822)/OBI-821治疗对以下方面的影响： a. 总生存期（OS） b. 生活质量（QoL） c. 无乳腺癌间期（BCFI） d. 无远处转移间期（DDFS） 2. 确定研究人群中adagloxad simolenin (OBI-822)/OBI-821的安全性和耐受性。探索性目的探索性目的如下： 1. 探索adagloxad simolenin （OBI-822）/OBI-821抗Globo H抗体应答、IDFS以及OS之间的相关性 2. 评价Globo H肿瘤表达对IDFS和OS的影响 3. 识别可预测adagloxad simolenin（OBI-822）/OBI-821治疗结局的患者基线特征和人口统计学特征 4. 探索基线特征（包括肿瘤病理、分子和免疫特征）和肿瘤表达水平之间的相关性

[Translation]

Primary Objective To determine the effect of adagloxad simolenin (OBI-822)/OBI-821 treatment on improvement of IDFS in the study population. Secondary Objectives The secondary objectives of the study are: 1. To determine the effect of adagloxad simolenin (OBI-822)/OBI-821 treatment on the following aspects in the study population: a. Overall survival (OS) b. Quality of life (QoL) c. Breast cancer free interval (BCFI) d. Distant metastasis free interval (DDFS) 2. To determine the safety and tolerability of adagloxad simolenin (OBI-822)/OBI-821 in the study population. Exploratory objectives The exploratory objectives are as follows: 1. To explore the correlation between adagloxad simolenin (OBI-822)/OBI-821 anti-Globo H antibody response, IDFS, and OS 2. To evaluate the impact of Globo H tumor expression on IDFS and OS 3. To identify patient baseline and demographic characteristics that may predict adagloxad simolenin (OBI-822)/OBI-821 treatment outcomes 4. To explore the correlation between baseline characteristics (including tumor pathology, molecular and immune characteristics) and tumor expression levels

Start Date07 Dec 2021

Sponsor / Collaborator

Zuellig Pharma China

[+3]

100 Clinical Results associated with OBI Pharma, Inc.

0 Patents (Medical) associated with OBI Pharma, Inc.

Literatures (Medical) associated with OBI Pharma, Inc.

24 Jun 2024·JACS Au

Structure-Based High-Efficiency Homogeneous Antibody Platform by Endoglycosidase Sz Provides Insights into Its Transglycosylation Mechanism

Article

Author: Hsieh, Yih-Huang ; Hu, Pu-Ling ; Chuankhayan, Phimonphan ; Yoshimura, Masato ; Hsieh, Yin-Cheng ; Lin, Pei-Ju ; Lin, Chien-Chih ; Huang, Yen-Chieh ; Wang, Nan-Hsuan ; Huang, Teng-Yi ; Guan, Hong-Hsiang ; Chen, Chun-Jung ; Tsai, Yi-Chien ; Chen, Nai-Chi

Monoclonal antibodies (mAbs) have gradually dominated the drug markets for various diseases. Improvement of the therapeutic activities of mAbs has become a critical issue in the pharmaceutical industry. A novel endo-β-N-acetylglucosaminidase, EndoSz, from Streptococcus equisubsp. zooepidemicus Sz105 is discovered and applied to enhance the activities of mAbs. Our studies demonstrate that the mutant EndoSz-D234M possesses an excellent transglycosylation activity to generate diverse glycoconjugates on mAbs. We prove that EndoSz-D234M can be applied to various marketed therapeutic antibodies and those in development for antibody remodeling. The remodeled homogeneous antibodies (mAb-G2S2) produced by EndoSz-D234M increase the relative ADCC activities by 3-26-fold. We further report the high-resolution crystal structures of EndoSz-D234M in the apo-form at 2.15 Å and the complex form with a bound G2S2-oxazoline intermediate at 2.25 Å. A novel pH-jump method was utilized to obtain the complex structure with a high resolution. The detailed interactions of EndoSz-D234M and the carried G2S2-oxazoline are hence delineated. The oxazoline sits in a hole, named the oxa-hole, which stabilizes the G2S2-oxazoline in transit and catalyzes the further transglycosylation reaction while targeting Asn-GlcNAc (+1) of Fc. In the oxa-hole, the H-bonding network involved with oxazoline dominates the transglycosylation activity. A mobile loop2 (a.a. 152-159) of EndoSz-D234M reshapes the binding grooves for the accommodation of G2S2-oxazoline upon binding, at which Trp154 forms a hydrogen bond with Man (-2). The long loop4 (a.a. 236-248) followed by helix3 is capable of dominating the substrate selectivity of EndoSz-D234M. In addition, the stepwise transglycosylation behavior of EndoSz-D234M is elucidated. Based on the high-resolution structures of the apo-form and the bound form with G2S2-oxazoline as well as a systematic mutagenesis study of the relative transglycosylation activity, the transglycosylation mechanism of EndoSz-D234M is revealed.

01 Jun 2024·Journal of Clinical Oncology

Novel TROP2-targeted CAR T cells with high specificity and sustained efficacy for solid tumors in animal models.

Author: Kuo, Tzer-Min ; Lai, Ming-Tain ; Liu, Chih-Chun ; Lai, Jiann-Shiun

e14563 Background: CAR T cell therapy, successful in hematological malignancies, encounters challenges against solid tumors due to immune exhaustion and senescence within the tumor microenvironment. The imperative need for an optimal tumor target antigen is evident in advancing CAR T therapy. TROP2, a membrane-associated glycoprotein, is highly expressed in diverse cancers, including cervical, bladder, esophageal, ovarian, and endometrial cancers. TROP2 overexpression, approaching 100% in cervical and hormone-resistant prostate cancer, correlates inversely with prognosis and survival, presenting TROP2 as a promising CAR T therapy target. This study engineered the novel TROP2 antibody R4702, featuring a distinct binding epitope from Sacituzumab and Datopotamab, to develop TROP2-specific CAR T cells and evaluated their efficacy against a spectrum of solid tumors. Methods: Expansion of CAR T Cells and Cytotoxicity: CAR T cells were created through lentivirus-mediated genetic engineering with the TROP2 antibody, followed by 10 days of expansion. T cell differentiation was evaluated, and luciferase-encoding target cells incubated with varying CAR T cell ratios overnight were quantified luciferase activity. In Vivo Efficacy and Persistence: CAR T cells were adoptively transferred into ASID mice with tumors. In vivo tumor imaging used luciferase activity, and calipers monitored tumor size weekly. CAR T cell persistence assessed their ability to suppress rechallenged tumor growth. Results: R4702, a novel TROP2-specific antibody, displayed high binding affinity to a distinct epitope. Post- ex vivo expansion, R4702 CAR T cells showed a substantial increase (100 to 200-fold) over 10 days, with a high expression level (50~80%) of R4702 CAR on T cells. Over 60% of R4702 CAR T cells displayed a less differentiated status, characterized by a CD62L+ population comprising TSCM and TCM. In vitro cytotoxicity revealed potent and specific efficacy against various TROP2-positive cancer cell lines, with no observed killing activity against TROP2-negative cells. In vivo efficacy of R4702 CAR T cells demonstrated 100% tumor growth inhibition within 30 days post-treatment across diverse xenograft models. Importantly, R4702 CAR T cells exhibited enduring anti-tumor efficacy against successive tumor challenges in xenograft models of pancreatic, gastric, NSCLC, TNBC, and ovarian cancers. In a head-to-head comparison with Sacituzumab and Datopotamab CAR T, R4702 demonstrated superior anti-tumor efficacy to Sacituzumab and comparable efficacy with Datopotamab in the BxPC-3 CDX model of pancreatic cancer. Conclusions: A novel TROP2-specific R4702 CAR T cell, developed, showcased robust tumor-killing capabilities. The anti-tumor activity persisted upon repeated tumor challenges across various xenograft models, underscoring the potential of R4702 CAR T cells as a promising therapeutic strategy.

01 Jun 2024·Journal of Clinical Oncology

Positive associations of active immune therapy OBI-833/OBI-821 induced immune responses with clinical outcomes in patients with non-small cell lung cancer.

Author: Lai, Ming-Tain ; Ou, Chien-Chih ; Yu, Chung-Yun ; Tang, Wei-Chien ; Yang, Ming-Chen ; Tsao, Chun-Yen ; Ho, Ching-Liang ; Yang, Cheuh-hao

e14671 Background: OBI-833/OBI-821 (OBI-833) is a novel active immune therapy (cancer vaccine) targeting a tumor-associated carbohydrate antigen, Globo H. Previous reports have shown that OBI-833 can elicit a beneficial immune response in Non-Small Cell Lung Cancer (NSCLC) patients and rendered durable stable disease with some TKI-treated patients. In this study, we further evaluated the effect of OBI-833-induced immune responses on the in-study progression-free survivals (isPFS) during the treatment. Methods: Sera were collected for the evaluations of maximum concentration (Cmax) and exposure (area under the curve: AUC) of anti-Globo H IgM (GH IgM) and IgG (GH IgG), complement-dependent cytotoxicity (CDC), antibody-dependent cell-mediated cytotoxicity (ADCC), and ex-vivo GH IgM induction with PBMC from each subject at baseline. The correlations of OBI-833-induced immune responses with isPFS and best overall response (BOR) were also evaluated. Pearson correlation coefficient analysis was used for all correlation evaluations. Results: Among the 14 OBI-833-treated subjects, 93% and 64% of subjects had significant increase in GH IgM and GH IgG, respectively. Median Cmax GH IgM and Cmax GH IgG were 13.8 µg/mL and 12.4 µg/mL, respectively. While the increase in CDC activities was not significantly correlated with the increase of GH IgM, a weak association between GH IgG and ADCC was observed (r=0.3380, p<0.0001). In addition, a strong association (r=0.84) was observed between Ex-vivo IFN-γ secreting and their Cmax IgM concentration in the OBI-833 Ex-vivo stimulation study. In contrast, weak association (r=0.26) was observed between Ex-vivo GH IgM induction and their Cmax of IgM. Correlations of the immune responses on isPFS were further analyzed. Significant positive correlations were observed for the Cmax and AUC of GH IgM with isPFS (Cmax: r=0.6345, p=0.0148; AUC: r=0.8212, p=0.0003) and the Cmax and AUC of GH IgG with isPFS (Cmax: r=0.7192, p=0.0037; AUC: r=0.6306, p=0.0062). Furthermore, distinct features of GH IgG responses from 2 subjects were identified based on the ADCC-GH IgG scatter plot. Samples from subject 034-006 showed high ADCC activity with relatively low GH IgG concentration, whereas the BOR was at -27%, which has significant negative correlation of tumor response (TR) with GH IgG (r=-0.7381, p=0.0148) and ADCC (r=-0.8565, p=0.0016). In contrast, samples from subject 034-004 showed average ADCC activity and relatively high GH IgG concentration with BOR at -12%, showing a negative correlation of TR with GH IgG (r=-0.8352, p=0.0001) and ADCC (r=-0.5690, p=0.0269). Conclusions: OBI-833 can elicit beneficial immune responses in NSCLC patients. Both GH IgM and GH IgG may contribute to the isPFS and TR of the subjects. Further development of OBI-833 in EGFR-mutated NSCLC patients phase II trial is ongoing.

News (Medical) associated with OBI Pharma, Inc.

13 Jun 2024

·pipelinereview.com

OBI Pharma Announces Phase 1/2 Study Initiation for OBI-992, a TROP2-Targeted Antibody-Drug Conjugate (ADC) for Cancer Therapy

Clinical trial to evaluate the safety and efficacy of OBI-992 in advanced solid tumors. TAIPEI, Taiwan I June 12, 2024 I OBI Pharma, a clinical-stage oncology company (4174.TWO), today announced the initiation of a Phase 1/2 clinical trial of OBI-992, an antibody-drug conjugate (ADC) targeting TROP2 (Trophoblast cell-surface antigen 2), an antigen overexpressed in multiple tumor types. OBI plans to enroll patients with advanced solid tumors, including non-small cell lung cancer (NSCLC), small cell lung cancer (SCLC), gastric cancer (GC), and other potential cancers. The objective of the trial is to verify the safety, pharmacokinetics, and preliminary efficacy profile of OBI-992 in these patient populations. OBI Pharma’s Chief Medical Officer, M. Wayne Saville, M.D., noted, “Based on our preclinical data, OBI-992 has several important advantages over other TROP2 ADCs in development; including high serum stability, excellent bystander effect, potential ability to overcome drug resistance, and outstanding activity in animal and organoid models of cancer 1 , 2 , 3 . We look forward to investigating this potential best-in-class TROP2 ADC in the clinic. Leia Tsimberidou MD, of MD Anderson Cancer Center in Houston, TX. USA is the lead investigator for the study.” Heidi Wang, Ph.D., OBI Pharma’s Chief Executive Officer, added, “We are excited to initiate this first in human study of OBI-992. This is an important company milestone and highlights our commitment to building and strengthening the novel OBI Pharma oncology pipeline. We thank the patients and the investigators for their efforts and dedication.” About OBI-992 OBI-992 is a TROP2-targeted antibody-drug conjugate (ADC) that carries a potent topoisomerase I inhibitor payload (exatecan) proven to kill tumor cells. TROP2 is highly expressed in a variety of solid tumors such as lung, breast, ovarian, gastric, and other cancers, rendering it an ideal target for cancer therapy. OBI-992 uses a unique hydrophilic, enzyme-cleavable linker that is stable in circulation but releases the cytotoxic payload inside tumor cells. In preclinical animal models, OBI-992 demonstrated remarkable antitumor activity, improved pharmacokinetic characteristics, and a favorable safety profile relative to comparator ADCs. The TROP2 targeting antibody was in-licensed from Biosion, Inc. www.Biosion.com , in December 2021. OBI Pharma owns ex-China commercial rights for OBI-992. About OBI Pharma OBI Pharma, Inc., is a clinical stage oncology company that is headquartered in Taiwan and established in 2002. Its mission is to develop novel cancer therapeutic agents for patients with high unmet medical needs. The company’s novel first-in-class immuno-oncology portfolio targeting Globo H includes: two Globo H active immunotherapy vaccines, adagloxad simolenin (formerly OBI-822) and OBI-833. Using the company’s unique ADC platforms, including GlycOBI™, OBI created its novel ADC pipeline which includes OBI-992, OBI-902 and OBI-904, targeting TROP2 and Nectin-4, respectively. OBI’s pipeline also includes the first-in-class AKR1C3-targeted small-molecule prodrug OBI-3424, which selectively releases a potent DNA-alkylating antitumor agent in the presence of the aldo-keto reductase 1C3 (AKR1C3) enzyme. Additional information can be found at www.obipharma.com . GlycOBI™ is a trademark of OBI Pharma, Inc. 1 , 2 , 3 : AACR Annual Meeting 2024 Abstracts online. OBI Pharma, Inc. Taipei, Taiwan. https://www.obipharma.com/zh-hant/news-zh-hant/poster-presentations-at-the-aacr-2024-annual-meeting-for-obi-992-and-glycobi-adc-platform/ SOURCE: OBI Pharma

ImmunotherapyAACRADCVaccineIND

12 Jun 2024

·www.biospace.com

OBI Pharma Announces Phase 1/2 Study Initiation for OBI-992, a TROP2-Targeted Antibody-Drug Conjugate (ADC) for Cancer TherapyClinical trial to evaluate the safety and efficacy of OBI-992 in advanced solid tumors.

TAIPEI, Taiwan, June 12, 2024 (GLOBE NEWSWIRE) -- OBI Pharma, a clinical-stage oncology company (4174.TWO), today announced the initiation of a Phase 1/2 clinical trial of OBI-992, an antibody-drug conjugate (ADC) targeting TROP2 (Trophoblast cell-surface antigen 2), an antigen overexpressed in multiple tumor types. OBI plans to enroll patients with advanced solid tumors, including non-small cell lung cancer (NSCLC), small cell lung cancer (SCLC), gastric cancer (GC), and other potential cancers. The objective of the trial is to verify the safety, pharmacokinetics, and preliminary efficacy pro OBI-992 in these patient populations. OBI Pharma's Chief Medical Officer, M. Wayne Saville, M.D., noted, “Based on our preclinical data, OBI-992 has several important advantages over other TROP2 ADCs in development; including high serum stability, excellent bystander effect, potential ability to overcome drug resistance, and outstanding activity in animal and organoid models of cancer 1, 2,3. We look forward to investigating this potential best-in-class TROP2 ADC in the clinic. Leia Tsimberidou MD, of MD Anderson Cancer Center in Houston, TX. USA is the lead investigator for the study.” Heidi Wang, Ph.D., OBI Pharma’s Chief Executive Officer, added, “We are excited to initiate this first in human study of OBI-992. This is an important company milestone and highlights our commitment to building and strengthening the novel OBI Pharma oncology pipeline. We thank the patients and the investigators for their efforts and dedication.” About OBI-992 OBI-992 is a TROP2-targeted antibody-drug conjugate (ADC) that carries a potent topoisomerase I inhibitor payload (exatecan) proven to kill tumor cells. TROP2 is highly expressed in a variety of solid tumors such as lung, breast, ovarian, gastric, and other cancers, rendering it an ideal target for cancer therapy. OBI-992 uses a unique hydrophilic, enzyme-cleavable linker that is stable in circulation but releases the cytotoxic payload inside tumor cells. In preclinical animal models, OBI-992 demonstrated remarkable antitumor activity, improved pharmacokinetic characteristics, and a favorable safety pro to comparator ADCs. The TROP2 targeting antibody was in-licensed from Biosion, Inc. , in December 2021. OBI Pharma owns ex-China commercial rights for OBI-992. About OBI Pharma OBI Pharma, Inc., is a clinical stage oncology company that is headquartered in Taiwan and established in 2002. Its mission is to develop novel cancer therapeutic agents for patients with high unmet medical needs. The company’s novel first-in-class immuno-oncology portfolio targeting Globo H includes: two Globo H active immunotherapy vaccines, adagloxad simolenin (formerly OBI-822) and OBI-833. Using the company’s unique ADC platforms, including GlycOBI™, OBI created its novel ADC pipeline which includes OBI-992, OBI-902 and OBI-904, targeting TROP2 and Nectin-4, respectively. OBI’s pipeline also includes the first-in-class AKR1C3-targeted small-molecule prodrug OBI-3424, which selectively releases a potent DNA-alkylating antitumor agent in the presence of the aldo-keto reductase 1C3 (AKR1C3) enzyme. Additional information can be found at . GlycOBI™ is a trademark of OBI Pharma, Inc. 1, 2,3: AACR Annual Meeting 2024 Abstracts online. OBI Pharma, Inc. Taipei, Taiwan. Forward-Looking Statements Statements included in this press release that are not a description of historical facts are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements include, but are not limited to, statements about future clinical trials, results and the timing of such trials and results. Such risk factors are identified and discussed from time to time in OBI Pharma’s reports and presentations, including OBI Pharma’s filings with the Taiwan Securities and Futures Bureau. COMPANY CONTACT: Kevin Poulos Chief Business Officer OBI Pharma, Inc. 1.619.537.7698 Ext. 102 kpoulos@obipharmausa.com 115011台北市南港区忠孝东路七段508号6楼 6F., No. 508, Sec 7, Zhongxiao E. R., Nangang Dist., Taipei 115011, Taiwan R.O.C. OBI PHARMA台灣浩鼎

ImmunotherapyAACR

21 Mar 2024

·www.biospace.com

Biosion to Present Three Posters at the 2024 AACR Meeting

NEWARK, Del. and NANJING, China, March 21, 2024 /PRNewswire/ -- Biosion, a global, clinical-stage biotechnology company, today announced upcoming presentations of pre-clinical data for its oncology pipeline assets, including BSI-111, an anti-CD16a monoclonal antibody, BSI-730, a HER2/PD-L1 bispecific antibody and BSI-093, an anti-BTN3A monoclonal antibody at the American Association for Cancer Research (AACR) Annual Meeting to be held from April 5 to 10, 2024. "We are thrilled to present three posters at the AACR annual meeting. BSI-093, BSI-111 and BSI-730 demonstrate favorable biophysical and functional characteristics, supporting the initiation of development activities including manufacturing and IND-enabling studies" said Mingjiu Chen, Ph.D., Founder and Chief Executive Officer of Biosion, Inc. "We look forward to sharing the key data of these important therapeutic assets with the oncology research community at AACR." 01. BSI-111, a highly selective anti-CD16a monoclonal antibody with potent agonist activity for building a NK cell engager platform BSI-111 is a fully human monoclonal antibody discovered through Biosion's proprietary H³ Antibody Discovery Platform. BSI-111 binds specifically to CD16a without recognizing CD16b and binds the two allelic variants of CD16A - 158F and 158V with similar high affinity. BSI-111 demonstrates superior biophysical properties and functional characteristics, supporting the development of anti-CD16a-based NK cell engagers for the potential benefit of cancer patients. Time：April 8, 2024, 9:00 AM - 12:30 PM Location: Poster Section 2 Poster Board Number: 26 Published Abstract Number: 1343 02. BSI-730, a bispecific antibody targeting HER2 and PD-L1 for the development of a first-in-class bispecific ADC BSI-730 is a novel bispecific antibody for the development of a first-in-class bispecific ADC，identified through Biosion's proprietary SynTracer® High Throughput Endocytosis Platform. BSI-730 showed comparable binding affinity to HER2 as compared to trastuzumab, as well as comparable bioactivity to the parental anti-PD-L1 antibody regarding PD-L1 binding and PD-1/PD-L1 blocking. Time：April 8, 2024, 1:30 PM - 5:00 PM Location: Poster Section 21 Poster Board Number: 16 Published Abstract Number: 3135 03. BSI-093, a best-in-class anti-BTN3A monoclonal antibody for the treatment of cancer through the activation of Vγ9Vδ2 T cells BSI-093 is a highly differentiated, humanized anti-BTN3A agonistic monoclonal antibody with strong Vγ9Vδ2 T cell activation activity. The BTN3A family including BTN3A1, BTN3A2 and BTN3A3 are members of the Ig superfamily receptors, and is essential for the activation of Vγ9Vδ2 T cell-mediated anti-tumor immune responses. BTN3A's expression is significantly higher in tumor samples of cholangiocarcinoma, esophageal carcinoma, head and neck squamous cell carcinoma, compared to their counterpart normal tissue controls. Time：April 9, 2024, 1:30 PM - 5:00 PM Location: Poster Section 3 Poster Board Number: 7 Published Abstract Number: 5298 Additionally, Biosion's partner, CTTQ Pharma, OBI Pharma and Pyxis Oncology, will also be presenting posters at the AACR meeting. Partner：CTTQ A first-in-human phase 1 study of TQB2916, a novel CD40 agonist antibody for advanced malignancies TQB2916（BSI-038） is an anti-CD40 humanized agonist monoclonal antibody with 7-fold higher binding affinity and 4-fold higher cellular bioactivity compared to selicrelumab. By binding to CD40 receptor, it triggers the cellular proliferation and activation of antigen-presenting cells. In 2019, Biosion licensed Greater China rights of BSI-038 to CTTQ and retains all rights for development and commercialization in the rest of the world. Time：April 9, 2024, 9:00 AM - 12:30 PM Location: Poster Section 48 Poster Board Number: 20 Published Abstract Number: CT192 Partner：OBI Pharma 1. OBI-992, a novel TROP2 targeting antibody-drug conjugate, displayed excellent antitumor efficacy in various animal models Time：April 8, 2024, 9:00 AM - 12:30 PM Location: Poster Section 23 Poster Board Number:4 Published Abstract Number:1893 2. In vitro characterization of a novel TROP2-targeting antibody-drug conjugate OBI-992 Time：April 8, 2024, 1:30 PM - 5:00 PM Location: Poster Section 21 Poster Board Number: 11 Published Abstract Number:3130 3. OBI-992, a novel TROP2 targeting antibody drug conjugate demonstrates superior in vivo PK/PD properties and a favorable safety pro > Time：April 10, 2024, 9:00 AM - 12:30 PM Location: Poster Section 24 Poster Board Number: 20 Published Abstract Number: 7179 OBI-992 is a TROP2-targeted antibody-drug conjugate (ADC) that carries a potent topoisomerase I inhibitor payload to kill tumor cells. TROP2 is highly expressed in a variety of solid tumors such as lung, breast, ovarian, and gastric cancer, rendering it an ideal target for cancer therapy.OBI-992 uses a unique hydrophilic, enzyme-cleavable linker that is stable in circulation but releases the cytotoxic payload inside tumor cells. OBI-992 demonstrates remarkable antitumor efficacy, improved pharmacokinetic characteristics, and a favorable safety pro animal models. OBI-992 received US IND clearance in December 2023 and Phase 1/2 efficacy and safety human studies are planned to commence early Q2,2024. The TROP2 targeting antibody was in-licensed from Biosion, Inc. , in December 2021. OBI Pharma owns ex-China commercial rights for OBI-992. Partner：Pyxis Oncology Gene expression correlation of immune checkpoint molecules Siglec-15 and PD-L1 varies widely by cancer indication TIME：April 8, 2024, 9:00 AM - 12:30 PM Location: Poster Section 3 Poster Board Number: 24 Published Abstract Number: 1373 PYX-106 (BSI-060T) is a humanized anti-Siglec-15 monoclonal antibody being developed for solid tumors, including for patients that are not candidates for anti-PD-(L)1 treatment approaches. In this research, analysis of Siglec-15 mRNA expression was performed across single cells, cell lines, and bulk tumor samples to evaluate Siglec-15 target expression across a range of cancer types, including non-small cell lung cancer (NSCLC), cholangiocarcinoma, breast, thyroid, head and neck, colon, rectal, bladder, kidney, and endometrial cancers. These results demonstrate that Siglec-15 and PD-L1 are rarely found co-expressed on the same cell, provide detailed data on Siglec-15 and PD-L1 expression patterns by cancer type, and are expected to help inform potential future PYX-106 (BSI-060T) therapeutic strategies. In Mar 2022, Biosion licensed ex-Greater China rights of BSI-060T to Pyxis Oncology and retains all rights for development and commercialization in Greater China. Pyxis Oncology is conducting a Phase 1 clinical study of PYX-106 (BSI-060T) in solid tumors in the US and Europe. About Biosion Biosion is a global, clinical-stage biotechnology company committed to developing breakthrough antibody-based therapies to improve patient outcomes for the treatment of immune and oncologic diseases. Established in 2017, Biosion has built a pipeline of innovative biologics through its internally derived proprietary technologies including the H³ antibody discovery platform, SynTracer® HT endocytosis platform, and Flexibody® bispecific platform. Biosion's lead asset, Bosakitug (BSI-045B/TQC2731), an anti-TSLP mAb, is currently in phase II for severe asthma, atopic dermatitis, and chronic rhinosinusitis with nasal polyps (CRSwNP), with another 6 partnered assets in phase I/II. Biosion has operations in the US, China and Australia. For more information, please visit . Contact: Mason Xu mason.xu@biosion.com

Phase 1AACRPhase 2IND

100 Deals associated with OBI Pharma, Inc.

100 Translational Medicine associated with OBI Pharma, Inc.

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Pipeline Snapshot as of 07 Nov 2024

The statistics for drugs in the Pipeline is the current organization and its subsidiaries are counted as organizations,Early Phase 1 is incorporated into Phase 1, Phase 1/2 is incorporated into phase 2, and phase 2/3 is incorporated into phase 3

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Current Projects

Drug(Targets)	Indications	Global Highest Phase

Adagloxad simolenin ( Globo H )	Triple Negative Breast Cancer More	Phase 3
BSI-992 ( Trop-2 )	Stomach Cancer More	Phase 2 Clinical
OBI-999 ( Tubulin )	Solid tumor More	Phase 2 Clinical
OBI-833 ( Globo H )	EGFR-mutated non-small Cell Lung Cancer More	Phase 2
OBI-866 ( SSEA-4 )	Neoplasms More	Phase 1

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