自願公告 全面戰略合作協議 本公告乃中國抗體製藥有限公司（「本公司」，連同其附屬公司統稱「本集團」）董事 （「董事」）會（「董事會」）自願作出，以知會本公司股東（「股東」）及潛在投資者有關 本集團之最新業務進展。 全面戰略合作協議 董事會欣然宣佈，於二零二五年八月十二日，本公司與中山大學香港高等研究院 有 限 公 司（「 中 山 大 學 香 港 高 等 研 究 院 」或「 SYSU -IAS 」）（ 連 同 本 公 司 統 稱「 訂 約 方」）訂立全面戰略合作協議（「合作協議」），據此，訂約方同意開展為期三年的合 作，以於生物醫學領域進行聯合研發。合作協議的主要條款概要載列如下： 香 港 交 易 及 結 算 所 有 限 公 司 及 香 港 聯 合 交 易 所 有 限 公 司 對 本 公 告 的 內 容 概 不 負 責，對其準確性或完整性亦不發表任何聲明，並明確表示概不就因本公告全部或 任何部分內容而產生或因倚賴該等內容而引致的任何損失承擔任何責任。 SinoMab BioScience Limited 中 國 抗 體 製 藥 有 限 公 司 （於香港註冊成立的有限公司） （股份代號：3681） 日期 二零二五 ...

股份發行人及根據《上市規則》第十九B章上市的香港預託證券發行人的證券變動月報表 | 截至月份: | 2025年7月31日 | 狀態: | 新提交 | | --- | --- | --- | --- | | 致：香港交易及結算所有限公司 | | | | | 公司名稱: | 中國抗體製藥有限公司 | | | | 呈交日期: | 2025年8月5日 | | | | I. 法定/註冊股本變動 不適用 | | | | | 備註： | | | | | 中國抗體製藥有限公司是一間於香港註冊成立的公司，因此法定股本及面值的概念並不適用。 | | | | FF301 III.已發行股份及/或庫存股份變動詳情 第 1 頁 共 10 頁 v 1.1.1 FF301 II. 已發行股份及/或庫存股份變動 | 1. 股份分類 | 普通股 | | 股份類別 | 不適用 | | 於香港聯交所上市 (註1) | 是 | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 證券代號 (如上市) | 03681 | 說明 | | 不適用 | | | | | | | | 已發行股 ...

Core Insights - The report maintains a positive outlook on small molecule drug conjugates (SMDCs) and related companies, highlighting their potential in cancer treatment due to their ability to enhance efficacy while reducing toxicity [1][5][17] - The report emphasizes the clinical advantages of SMDCs, including better tumor penetration, reduced toxicity to normal cells, and easier control over synthesis and costs compared to antibody-drug conjugates (ADCs) [5][11][12] - The report identifies domestic biopharmaceutical companies, particularly Affinivax, as leaders in the SMDC space, showcasing significant advancements in innovative cancer drug development [5][12][17] Industry Overview - The pharmaceutical and biotechnology sector has shown a relative price-to-earnings (P/E) ratio of 51.14 as of July 25, 2025, which is significantly higher than its historical low of 24.38, indicating a premium valuation compared to the broader market [19] - The report notes that the healthcare sector's valuation is 279% higher than the Shanghai Composite Index, reflecting strong investor interest and confidence in the industry [19] - Recent market performance indicates a 1.90% increase in the pharmaceutical and biotechnology sector from July 21 to July 25, 2025, ranking it 16th among 27 sub-industries [26][29] Company Focus - The report suggests monitoring companies involved in the SMDC space, including Affinivax, and those collaborating with them, such as Innovent Biologics and others, which are expected to benefit from the growing interest in innovative cancer therapies [5][17][18] - Specific companies highlighted for their innovative drug development capabilities include Innovent Biologics, Shunyi Pharmaceutical, and others, which are positioned to capitalize on the advancements in SMDC technology [5][18]

Group 1 - The stock price of Valiant Biotech-B (09887.HK) increased by 113% [1] - The stock price of China Antibody-B (03681.HK) rose by 8.37% [1] - The stock price of Lepu Biopharma-B (02157.HK) went up by 5.64% [1] - The stock price of Tongyuan Kang Pharmaceutical-B (02410.HK) increased by 3.81% [1]

Group 1: Hong Kong Stock Market Movements - Jin Jing New Energy (01783) rose over 4.5% as the Hang Seng Index company is set to release its mid-year review results on August 22, with changes effective from September 8 [1] - Paper stocks in Hong Kong continued to rise, with Nine Dragons Paper (02689.HK) increasing over 7%, recording five consecutive gains, while Lee & Man Paper (02314.HK) rose about 5% [1] - Airline stocks saw significant gains, with China National Aviation (0753.HK) up over 7%, driven by the Civil Aviation Administration's emphasis on enhancing the industry’s competitive landscape [1] - Renrui Talent (06919) surged over 19% after announcing a positive earnings forecast, expecting revenue of approximately RMB 2.49 billion to 2.69 billion for the year ending June 30, 2025, representing a year-on-year growth of 21.1% to 30.8% [1] Group 2: Other Notable Stock Movements - China Antibody-B (03681) increased over 8% after entering into subscription agreements for the issuance of 182 million new shares at a subscription price of HKD 2.03 per share [2] - Fufeng Group (00546) rose over 4% with an expected net profit of RMB 1.74 billion for the first half of the year, a 67% increase year-on-year, attributed to higher sales and lower raw material costs [2] - Cao Cao Travel (02643) gained over 4%, reaching a new high following a strategic partnership with a leading commercial aerospace company [2] - NIO-SW (09866) rose over 8%, with a cumulative increase of over 40% in the month [2] Group 3: US Stock Market Highlights - Kohl's (KSS.US) saw a dramatic increase of nearly 90%, becoming a popular "meme stock" among retail investors, closing at $14.34, up 37.62% [3] - Daqo New Energy (DQ.US) closed at $24.60, with a rise of 16.75%, as silicon material prices have been on the rise, with an increase of 25-35% recently [3] - General Motors (GM.US) stock fell by 8.12% to $48.89, with the CFO indicating potential tariff impacts of up to $5 billion this year [3] - The Nasdaq Golden Dragon China Index rose 1.35%, with notable gains in Chinese concept stocks, including PONY.US up 8.62% and NIO.US up 10.84% [3] Group 4: Additional Stock Movements - Faraday Future (FFAI.US) surged over 43% after receiving a non-binding order for 1,000 vehicles valued at up to $100 million [4] - Most new energy vehicle stocks rose, with Lucid Group (LCID.US) closing at $3.13, an increase of about 11% [4] - Circle (CRCL.US) fell by 8.23% after a downgrade from "neutral" to "sell" by Compass Point Research [4] - Replimune (REPL.US) dropped 77% after the FDA rejected its application for a combination therapy for advanced melanoma, citing insufficient evidence [4]

Group 1 - Nanshan Aluminum International (02610.HK) expects a mid-term net profit of approximately $225 million to $265 million for the six months ending June 30, 2025, compared to a net profit of about $159 million for the same period ending June 30, 2024 [1] - The increase in net profit is primarily attributed to an improvement in gross margin, driven by higher alumina prices and relatively stable unit production costs [1] - The average selling price of the company's products for the first half of 2025 is expected to be around $530 per ton, up from approximately $387 per ton in the first half of 2024, but lower than $561 per ton in the second half of 2024 [1] Group 2 - TCL Electronics (01070.HK) anticipates a year-on-year adjusted net profit growth of approximately 45% to 65% for the first half of 2025 [2] - Renrui Talent (06919.HK) expects a mid-term profit attributable to equity holders to increase by 66.7% to 94.1% [2] - China Rare Earth Holdings (03788.HK) reports an increase in total gold resources to 5.07 million ounces [2]

Group 1 - The core point of the news is that the company has submitted a Biologics License Application (BLA) for Shuxili monoclonal antibody for the treatment of rheumatoid arthritis (RA) in China after achieving significant efficacy in Phase III clinical trials [1] - The Phase III trial results showed an ACR20 response rate of approximately 50% at week 24, with improvement over time, exceeding 65% at week 52 and over 70% at week 104, with no new safety risks identified [1] - The company voluntarily withdrew the BLA application due to the need for additional early efficacy evidence as emphasized by the Center for Drug Evaluation (CDE) in China [1] Group 2 - The company remains confident in obtaining approval for Shuxili monoclonal antibody in China, believing in its unique mechanism of action to achieve long-term efficacy and safety in treating autoimmune diseases [2] - The company has initiated planning for new clinical development programs for Shuxili monoclonal antibody targeting systemic lupus erythematosus [2] - The company has a diverse pipeline with multiple clinical and preclinical candidates, including two innovative drugs in clinical stages and four in preclinical stages, and will continue advancing its research and clinical development [2]

Investment Rating - The report maintains a "Positive" investment rating for the industry [8]. Core Insights - IL-25 is identified as a novel target in the Type II inflammation pathway, showing upregulation in atopic dermatitis (AD), psoriasis, and contact dermatitis, indicating its involvement in the progression of these skin inflammatory diseases [2][5][27]. - The drug SM17, developed by Chinese Antibody, is a first-in-class (FIC) IL-17RB monoclonal antibody targeting IL-25, demonstrating promising proof-of-concept (PoC) data in Phase Ib trials for atopic dermatitis, with superior itch relief compared to existing therapies [6][35][42]. Summary by Sections IL-25 as a Target - IL-25, a member of the IL-17 cytokine family, plays a crucial role in host defense and inflammatory diseases, inducing the production of IL-4, IL-5, and IL-13, while inhibiting Th17 differentiation [5][17]. - The upregulation of IL-25 in various skin inflammatory diseases suggests its potential for multi-indication exploration [27]. SM17 Clinical Data - In the Phase Ib trial, 75% of patients in the high-dose group achieved at least a 75% improvement in the Eczema Area and Severity Index (EASI-75) by week 12, compared to 0% in the placebo group, indicating a significant difference of 75% [6][35]. - The high-dose group also showed that 91.7% of patients had a significant reduction in the Peak Pruritus Numeric Rating Scale (PP-NRS) score, with no responders in the placebo group [7][38]. - SM17 demonstrated rapid and deep itch relief, outperforming existing AD therapies while maintaining comparable skin lesion improvement [41][43]. Competitive Landscape - Currently, only two IL-25-targeting candidates, SM17 and XKH001, are in clinical development, indicating a relatively early stage of research for this target compared to more established pathways like IL-17 and IL-4 [6][33]. - The competitive landscape for IL-25 and IL-17RB-targeting drugs is evolving, with several candidates in various stages of development [34].

Core Viewpoint - The Chinese innovative drug sector is gaining global competitiveness, highlighted by significant business development (BD) deals and the promising clinical data of the drug SM17, which is expected to attract attention from major pharmaceutical companies [1][2][12]. Group 1: Market Dynamics - The market is actively seeking the next major BD deal, especially after the significant $6 billion BD deal between 3SBio and Pfizer, indicating a trend of increasing interest in Chinese innovative drugs [1]. - The total amount of outbound transactions for Chinese innovative drugs is projected to reach a record high by 2025, with $45.5 billion already achieved in 2025 alone [5][7]. - The frequency of BD transactions is driven by multinational pharmaceutical companies facing "patent cliffs," necessitating the acquisition of innovative drug pipelines to replenish their product lines [7][8]. Group 2: SM17 Drug Overview - SM17 is a first-in-class monoclonal antibody targeting the IL-25 receptor, showing promising results in clinical trials for moderate to severe atopic dermatitis (AD) [2][3]. - The drug demonstrated a 91.7% response rate in itch control and a 75% response rate in skin lesion improvement during phase 1b trials, significantly outperforming existing treatments [4]. - SM17's unique dual mechanism of action allows for rapid itch relief and effective inflammation reduction, setting it apart from current therapies [3][4]. Group 3: Clinical and Commercial Potential - The global AD patient population is substantial, with at least 230 million affected worldwide, including over 70 million in China, indicating a significant market opportunity for SM17 [2][4]. - SM17's safety profile is favorable, with no serious adverse events reported during the clinical trials, further enhancing its attractiveness for potential licensing deals [4][9]. - The drug has potential applications beyond AD, including asthma and other autoimmune diseases, which could broaden its commercial prospects [9][11]. Group 4: Company Strategy and Future Outlook - The company has established a robust pipeline of innovative drugs, focusing on monoclonal antibodies for various immune-related diseases, positioning itself for sustainable growth [11][12]. - The strategic emphasis on self-research and innovation, coupled with promising clinical data for SM17, is expected to attract significant investment and partnership opportunities [12].

6月4日，截至港股收盘，恒生指数上涨0.6%，报23654.03点。中国抗体-B（03681.HK）收报2.85港元/ 股，上涨42.5%，成交量6045.78万股，成交额1.5亿港元，振幅39.5%。 最近一个月来，中国抗体-B累计涨幅26.58%，今年来累计涨幅83.49%，跑赢恒生指数17.21%的涨幅。 资料显示，中国抗体制药有限公司("中国抗体"或"公司",股份代号:3681.HK)聚焦研究、开发、生产及商 业化疗法,主要研制以单克隆抗体为基础的全球首创(FIC)生物制剂用以治疗免疫性疾病。公司注重科技 研发,其旗舰产品SM03 (Suciraslimab) 为全球首创用以治疗类风湿关节炎(RA)的抗CD22单抗药物,其商业 化进程正全速推进。SM03(Suciraslimab)在中国进行治疗RA的 III 期临床研究于二零二三年四月达到了 主要终点。于二零二三年九月五日,国家药品监督管理局已受理SM03(Suciraslimab)用于治疗类风湿关节 炎的生物制品许可申请(BLA),海口生产基地的临床现场检查及生产质量管理规范(GMP)检查是BLA审批 过程中的两个必要程序,均已于二零二四年一月完成 ...