復星醫藥子公司復宏漢霖與Organon共同宣佈美國首個帕妥珠單抗生物類似藥POHERDY獲美國FDA批准

（來源：復星醫藥）

轉自：復星醫藥

中國上海 & 美國新澤西州澤西市，2025年11月17日 —— 復星醫藥子公司復宏漢霖（2696.HK）與Organon（紐交所代碼：OGN）今日共同宣佈，帕妥珠單抗注射液（420 mg/14 mL）POHERDY®（pertuzumab-dpzb）生物製品許可申請（BLA）獲美國食品藥品監督管理局（FDA）批准，並可與原研產品PERJETA（pertuzumab）互換使用，成為美國首款且唯一的PERJETA生物類似藥，覆蓋其在美國已獲批的所有適應症1, 2。這一獲批標誌着在提升特定HER2陽性乳腺癌患者獲得兼具品質與潛在更可負擔治療的可及性方面邁出了具有里程碑意義的一步。

Organon生物類似藥和成熟藥業務美國商業主管Jon Martin

表示：「提升女性高發疾病的治療可及性，包括乳腺癌這一美國女性最常見的癌症（不含皮膚癌）3，是我們始終堅守的核心使命。POHERDY®不僅是首個在美獲批的PERJETA生物類似藥，它的獲批也延續了Organon近來在女性健康與腫瘤領域不斷豐富生物類似藥管線的良好勢頭。我們與復宏漢霖的緊密合作，對於實現我們為美國患者打造更可持續醫療體系的目標至關重要。」

復宏漢霖執行董事、首席執行官

朱儁博士表示

POHERDY®的獲批代表復宏漢霖在生物藥領域全球佈局和質量開發方面實現了又一次具有里程碑意義的突破。作為美國首個獲批的帕妥珠單抗生物類似藥2，這一重要成果展現了我們以嚴謹的科學和監管標準構建可持續全球研發體系的核心能力，也印證了復宏漢霖秉持‘以患者為中心’的核心理念，堅定推進全球化戰略的長期承諾。我們將加速推動具有品質的生物藥惠及全球更多患者，為人類健康事業創造更大價值。

復宏漢霖首席商務發展官兼高級副總裁

曹平表示

POHERDY®的獲批進一步體現了公司在國際註冊方面的良好成績，以及我們在質量管理和商業化協作方面的綜合實力。我們期待與合作伙伴Organon緊密協作，充分發揮雙方在供應鏈、市場與渠道方面的協同優勢，共同提升高品質生物藥的可及性，為更多患者提供兼具品質與經濟性的治療選擇。

帕妥珠單抗是一種針對HER2受體的單克隆抗體，是HER2陽性乳腺癌治療的重要組成部分，適用於：轉移性乳腺癌，即與曲妥珠單抗和多西他賽聯合，治療既往未接受過轉移性乳腺癌抗HER2治療或化療的HER2陽性、轉移性乳腺癌患者；以及早期乳腺癌，即與曲妥珠單抗和化療聯合，作為早期乳腺癌整體治療方案的一部分，用於HER2陽性、局部晚期、炎性或早期乳腺癌患者（直徑＞2cm或淋巴結陽性）的新輔助治療，以及用於具有高復發風險HER2陽性早期乳腺癌患者的輔助治療。完整適應症見文末。

帕妥珠單抗可導致亞臨牀和臨牀心力衰竭，表現爲左心室射血分數（LVEF）下降及充血性心力衰竭（CHF）。治療前和治療期間需要評估患者的心臟功能。如果確認發生具有臨牀意義的左心室功能下降，應停止POHERDY治療。暴露帕妥珠單抗可導致胚胎-胎兒死亡和出生缺陷。應向患者告知這些風險並在用藥時採取有效的避孕措施。更多安全性信息見文末。

此次FDA的批准主要是基於一整套全面數據的審查，包括分析相似性研究、臨牀藥代動力學研究及臨牀比對研究。研究表明，POHERDY®在安全性、純度和效力方面（即安全性和有效性）與原研產品PERJETA高度相似，並可實現互換使用4,5。

2022年，復宏漢霖與 Organon 簽訂許可與供應協議，授予 Organon 對包括POHERDY®在內的多個生物類似藥在除中國以外的全球區域的獨家商業化權益6。POHERDY®在美國的獲批，將進一步豐富雙方在腫瘤領域的產品組合並助力將具有品質的生物藥帶給更多患者。

PERJETA為基因泰克公司（Genentech, Inc.）在美國註冊的商標；Organon與該商標持有人不存在任何關聯。

【參考文獻】

1. PERJETA. Prescribing Information. Genentech Inc.; 2025.

2. Overview for health care professionals. US Food and Drug Administration. Updated August 1, 2024. Accessed November 10, 2025. https://www.fda.gov/drugs/biosimilars/overview-health-care-professionals

3. Bray F, Laversanne M, Sung H, et al. Global cancer statistics 2022: GLOBOCAN estimates of incidence and mortality worldwide for 36 cancers in 185 countries. CA Cancer J Clin. 2024;74(3):229-263. doi:10.3322/caac.21834

4. Review and approval. U.S. Food and Drug Administration. December 13, 2022. Accessed July 28, 2025. https://www.fda.gov/drugs/biosimilars/review-and-approval

5. Biosimilar product regulatory review and approval. U.S. Food and Drug Administration. Accessed May 1, 2025. https://www.fda.gov/files/drugs/published/Biosimilar-Product-Regulatory-Review-and-Approval.pdf

6. Organon Enters into Global License Agreement to Commercialize Henlius’ Investigational Perjeta® (Pertuzumab) and Prolia®/Xgeva® (Denosumab) Biosimilar Candidates. Organon. June 13, 2022. Accessed July 28, 2025. https://www.organon.com/news/organon-enters-into-global-license-agreement-to-commercialize-henlius-investigational-perjeta-pertuzumab-and-prolia-xgeva-denosumab-biosimilar-candidates/

關於復宏漢霖

復宏漢霖（2696.HK）是一家國際化的創新生物製藥公司，致力於為全球患者提供可負擔的高品質生物藥，產品覆蓋腫瘤、自身免疫疾病、眼科疾病等領域，已在全球獲批上市10款產品，3個上市申請分別獲中國藥監局、美國FDA和歐盟EMA受理。自2010年成立以來，復宏漢霖已建成一體化生物製藥平臺，高效及創新的自主核心能力貫穿研發、生產及商業運營全產業鏈。公司已建立完善高效的全球創新中心，按照國際藥品生產質量管理規範（GMP）標準進行生產和質量管控，不斷夯實一體化綜合生產平臺，其中，公司商業化生產基地已相繼獲得中國、歐盟和美國GMP認證。

復宏漢霖前瞻性佈局了一個多元化、高質量的產品管線，涵蓋約50個分子，並全面推進基於自有抗PD-1單抗H藥 漢斯狀®的腫瘤免疫聯合療法。截至目前，公司已獲批上市產品包括全球首個獲批一線治療小細胞肺癌的抗PD-1單抗漢斯狀®（斯魯利單抗，歐洲商品名：Hetronifly®）、自主研發的中美歐三地獲批單抗生物類似藥漢曲優®（曲妥珠單抗，美國商品名：HERCESSI™，歐洲商品名：Zercepac®）、國內首個生物類似藥漢利康®（利妥昔單抗）、地舒單抗生物類似藥Bildyos®和Bilprevda®，以及帕妥珠單抗POHERDY®。公司亦同步就19個產品在全球範圍內開展30多項臨牀試驗，對外授權全面覆蓋歐美主流生物藥市場和眾多新興市場。

關於Organon

Organon（紐約證券交易所代碼：OGN）是一家全球化醫療健康公司，以提供創新性的藥品和解決方案，實現更健康的每一天為使命。Organon在全球提供超過70種藥物和醫療解決方案，並持續推動這些亟需療法在超140個市場的廣泛可及，重點業務包括女性健康、經典產品和生物類似藥，專注於為女性特有疾病、對女性影響重大或不同的疾病尋求解決方案。

Organon總部設在美國新澤西州澤西市，致力於提升醫藥健康領域的可及性、可負擔性和創新發展。訪問 www.organon.com，並關注我們的 LinkedIn、Instagram、X、YouTube、TikTok 和 Facebook以瞭解更多有關Organon的信息。

關於前瞻性聲明的注意事項

除歷史信息外，本新聞稿包含的某些陳述和披露屬於1995年《美國私人證券訴訟改革法案》安全港條款所指的「前瞻性陳述」，包括但不限於有關擴大HER2陽性乳腺癌患者治療可及性、POHERDY的潛在市場機會、Organon生物類似藥產品組合的擴展、Organon與復宏漢霖的合作，以及復宏漢霖的全球佈局和生物藥研發的相關表述。前瞻性陳述通常可通過以下詞語識別： 「目標」「、繼續」、「向前」、「願景」、「使命」、「預期」、「探索」、「未來」、「相信」、「將」、「潛在」等類似表達。這些前瞻性陳述基於公司管理層當前的信念和預期，但同時受到重大風險和不確定性的影響。如果基礎假設不準確或風險/不確定性事項發生，實際結果可能與這些前瞻性聲明中所述存在重大差異。風險和不確定性因素包括但不限於：無法在歐洲上市HLX11（Perjeta®（帕妥珠單抗）在研生物類似藥）；Organon所在市場的品牌與品類競爭加劇；貿易保護措施、進出口許可要求，以及美國或其他政府實施的關税（包括可能的醫藥行業關税）、貿易制裁或類似限制措施的直接或間接影響；美國及其他國家/地區政府各級財政預算分配的變化，包括分配給Organon客户或業務合作伙伴的時間及金額；Organon無法控制的宏觀經濟因素，如通脹、利率變化、經濟衰退壓力及外匯波動；Organon依賴的第三方未能按預期履行職責導致業務增長受阻；供應商未能按照約定提供原料、材料或服務，或未能履行相關義務；供應、生產、包裝及運營成本上升；與商業合作伙伴建立或維持合作關係的困難；全球範圍內的價格壓力，包括由醫療保險管理組織、司法判決及政府法律法規（涉及或影響醫保、醫療改革、藥品定價、報銷、准入制度、國際參考定價（包括「最低優惠國家」規則）及其他定價政策）所帶來的影響；Organon未能全面落實產品開發與商業化計劃；生產困難或延迟；美國FDA、美國證券交易委員會（SEC）及其他美國或海外監管機構的運作中斷；美國及其他司法轄區內法律法規的變動，包括與產品研發、審批、註冊、生產、供應、分銷和/或營銷相關的法規及知識產權和環境保護法規的變化及其執法力度；產品出現或被認為出現療效、安全性或其他質量問題（無論是否有科學依據），導致產品召回、退市、標籤變更或銷售下降；第三方未來行為的影響，包括客户關係的重大變化，或醫療產品與服務購買者消費行為、醫療消費模式變化，例如推迟醫療程序、限用處方藥、減少就診頻率或放棄醫療保險；Organon或其第三方合作伙伴及其供應商未能履行監管或質量義務；大宗商品價格、燃料、運輸費用的波動影響產品供應成本或供貨能力。公司不承擔因新信息、未來事件或其他原因而更新前瞻性聲明的義務。更多可能導致實際結果與前瞻性聲明存在重大差異的因素，可見公司向美國SEC提交的文件，包括最新的Form 10-K年度報告（及其修訂版）、Form 10-Q 季度報告（及其修訂版）、Form 8-K當前報告及其他SEC文件，相關資料可在SEC官網（www.sec.gov）查詢。

PERJETA為基因泰克公司（Genentech, Inc.）在美國註冊的商標；Organon與該商標持有人不存在任何關聯。

Henlius and Organon Announce US FDA Approval of POHERDY® (pertuzumab-dpzb), the First PERJETA (pertuzumab) Biosimilar in the US

SHANGHAI, China & JERSEY CITY, NJ – November 17, 2025 – Shanghai Henlius Biotech, Inc. (2696.HK), and Organon (NYSE: OGN) today announced that the US Food and Drug Administration (FDA) has approved the Biologics License Application (BLA) for POHERDY® (pertuzumab-dpzb) 420 mg/14 mL injection for intravenous use, an interchangeable biosimilar to PERJETA (pertuzumab), for all indications of the reference product.1 POHERDY is the first and only approved pertuzumab biosimilar in the US, representing an important milestone in expanding access to quality and potentially more affordable biologic therapies for patients with certain HER2-positive breast cancers.2

"Expanding access to treatments for diseases that disproportionately impact women, including breast cancer, the most common cancer among women in the US excluding skin cancer, is at the core of our mission,」 said Jon Martin, US Commercial Lead, Biosimilars and Established Brands at Organon.3 「Not only is POHERDY the first approved biosimilar to PERJETA in the US, but its approval also builds on Organon’s recent momentum of expanding our biosimilars portfolio in women's health and oncology. Our collaboration with Henlius is critical to our goal of making health care more sustainable for US patients.」

「The FDA approval of POHERDY marks a significant milestone in Henlius’ global expansion and quality biologics development. As the first pertuzumab biosimilar approved in the US, this important achievement demonstrates our core capability to build a sustainable global R&D system grounded in rigorous scientific and regulatory standards. It also reflects Henlius’ steadfast commitment to its patient-centric philosophy and long-term global strategy,」 said Dr. Jason Zhu, Executive Director and Chief Executive Officer of Henlius. 「We will continue accelerating the delivery of quality biologics to benefit more patients worldwide and create greater value for human health.」2

「The approval of POHERDY further underscores Henlius’ track record in international registration, together with our strength in quality management and commercialization collaboration,」 said Ping Cao, Chief Business Development Officer and Senior Vice President of Henlius. 「We look forward to working closely with our partner Organon to leverage our complementary strengths in supply chain, market, and distribution networks, jointly enhancing access to quality biologics and providing patients with treatment options that combine quality and affordability.」2

POHERDY is a HER2/neu receptor antagonist indicated for use in combination with trastuzumab and docetaxel for the treatment of adults with HER2-positive metastatic breast cancer who have not received prior anti-HER2 therapy or chemotherapy for metastatic disease. POHERDY is also indicated for use in combination with trastuzumab and chemotherapy as (i) neoadjuvant treatment of adults with HER2-positive, locally advanced, inflammatory, or early stage breast cancer (either greater than 2 cm in diameter or node positive) as part of a complete treatment regimen for early breast cancer and (ii) adjuvant treatment of adults with HER2-positive early breast cancer at high risk of recurrence. See full indications below.

Pertuzumab products can cause subclinical and clinical cardiac failure manifesting as decreased left ventricular ejection fraction (LVEF) and congestive heart failure (CHF). Evaluate cardiac function prior to and during treatment. Discontinue POHERDY treatment for a confirmed clinically significant decrease in left ventricular function. Exposure to pertuzumab products can cause embryo-fetal death and birth defects. Advise patients of these risks and the need for effective contraception. See additional safety information below.

POHERDY was approved based on the review of a comprehensive data package, which includes analytical similarity, clinical pharmacokinetic studies, and comparative clinical studies demonstrating that POHERDY is highly similar to and interchangeable with the reference product PERJETA in terms of safety, purity, and potency (safety and effectiveness).4,5

In 2022, Henlius entered into a license and supply agreement with Organon, granting Organon the exclusive commercialization rights to multiple biosimilars, including POHERDY. The agreement covers exclusive global commercialization rights except for China.6 The FDA approval of POHERDY will further enhance the partners’ oncology portfolio and their ability to deliver quality biologics to more patients.2

About POHERDY® (pertuzumab-dpzb)

POHERDY is a HER2/neu receptor antagonist indicated for:

• Metastatic Breast Cancer (MBC): POHERDY is indicated for use in combination with trastuzumab and docetaxel for the treatment of adults with HER2-positive metastatic breast cancer who have not received prior anti-HER2 therapy or chemotherapy for metastatic disease.

• Early Breast Cancer (EBC): POHERDY is indicated for use in combination with trastuzumab and chemotherapy for:

  ◽The neoadjuvant treatment of adults with HER2-positive, locally advanced, inflammatory, or early stage breast cancer (either greater than 2 cm in diameter or node positive) as part of a complete treatment regimen for early breast cancer

  ◽The adjuvant treatment of adults with HER2-positive early breast cancer at high risk of recurrence

SELECTED SAFETY INFORMATION

LEFT VENTRICULAR DYSFUNCTION and EMBRYO-FETAL TOXICITY

• Pertuzumab products can cause subclinical and clinical cardiac failure manifesting as decreased left ventricular ejection fraction (LVEF) and congestive heart failure (CHF). Evaluate cardiac function prior to and during treatment. Discontinue POHERDY treatment for a confirmed clinically significant decrease in left ventricular function.

• Exposure to pertuzumab products can cause embryo-fetal death and birth defects. Advise patients of these risks and the need for effective contraception.

CONTRAINDICATIONS

POHERDY is contraindicated in patients with known hypersensitivity to pertuzumab products or to any of its excipients.

WARNINGS AND PRECAUTIONS

Left Ventricular Dysfunction Pertuzumab products can cause left ventricular dysfunction, including symptomatic heart failure. Decreases in LVEF have been reported with drugs that block HER2 activity, including pertuzumab products.

Assess LVEF prior to initiation of POHERDY and at regular intervals during treatment to ensure that LVEF is within normal limits. If the LVEF declines and has not improved, or has declined further at the subsequent assessment, consider permanent discontinuation of POHERDY and trastuzumab.

In the pertuzumab-treated patients with MBC in CLEOPATRA, left ventricular dysfunction occurred in 4% of patients, and symptomatic left ventricular systolic dysfunction (LVSD) (congestive heart failure) occurred in 1% of patients. Patients who received prior anthracyclines or prior radiotherapy to the chest area may be at higher risk of decreased LVEF or left ventricular dysfunction.

In patients receiving pertuzumab as a neoadjuvant treatment in combination with trastuzumab and docetaxel in NeoSphere, LVEF decline >10% and a drop to <50% occurred in 8% of patients, and left ventricular dysfunction occurred in 3% of patients. LVEF recovered to ≥50% in all of these patients.

In patients receiving neoadjuvant pertuzumab in TRYPHAENA, LVEF decline >10% and a drop to <50% occurred in 7% of patients treated with pertuzumab plus trastuzumab and fluorouracil, epirubicin, and cyclophosphamide (FEC) followed by pertuzumab plus trastuzumab and docetaxel, 16% of patients treated with pertuzumab plus trastuzumab and docetaxel following FEC, and 11% of patients treated with pertuzumab in combination with docetaxel, carboplatin, and trastuzumab (TCH). Left ventricular dysfunction occurred in 6% of patients treated with pertuzumab plus trastuzumab and FEC followed by pertuzumab plus trastuzumab and docetaxel, 4% of patients treated with pertuzumab plus trastuzumab and docetaxel following FEC, and 3% of patients treated with pertuzumab in combination with TCH. Symptomatic LVSD occurred in 4% of patients treated with pertuzumab plus trastuzumab and docetaxel following FEC, 1% of patients treated with pertuzumab in combination with TCH, and none of the patients treated with pertuzumab plus trastuzumab and FEC followed by pertuzumab plus trastuzumab and docetaxel. LVEF recovered to ≥50% in all but 1 patient.

In patients receiving neoadjuvant pertuzumab in BERENICE, in the neoadjuvant period, LVEF decline ≥10% and a drop to <50% as measured by ECHO/MUGA assessment occurred in 7% of patients treated with pertuzumab plus trastuzumab and paclitaxel following dose-dense doxorubicin and cyclophosphamide (ddAC) and 2% of patients treated with pertuzumab plus trastuzumab and docetaxel following FEC. Ejection fraction decreased (asymptomatic LVD) occurred in 7% of patients treated with pertuzumab plus trastuzumab and paclitaxel following ddAC and 4% of the patients treated with pertuzumab plus trastuzumab and docetaxel following FEC in the neoadjuvant period. Symptomatic LVSD (New York Heart Association [NYHA] Class III/IV Congestive Heart Failure) occurred in 2% of patients treated with pertuzumab plus trastuzumab and paclitaxel following ddAC and none of the patients treated with pertuzumab plus trastuzumab and docetaxel following FEC in the neoadjuvant period.

In patients receiving adjuvant pertuzumab in APHINITY, the incidence of symptomatic heart failure (NYHA Class III/IV) with a LVEF decline ≥10% and a drop to <50% was 0.6%. Of the patients who experienced symptomatic heart failure, 47% of pertuzumab-treated patients had recovered (defined as 2 consecutive LVEF measurements above 50%) at the data cutoff. The majority of the events (86%) were reported in anthracycline-treated patients. Asymptomatic or mildly symptomatic (NYHA Class II) declines in LVEF ≥10% and a drop to <50% were reported in 3% of pertuzumab-treated patients, of whom 80% recovered at the data cutoff.

Pertuzumab products have not been studied in patients with a pretreatment LVEF value of <50%; a prior history of CHF; decreases in LVEF to <50% during prior trastuzumab therapy; or conditions that could impair left ventricular function such as uncontrolled hypertension, recent myocardial infarction, serious cardiac arrhythmia requiring treatment, or a cumulative prior anthracycline exposure to >360 mg/m2 of doxorubicin or its equivalent.

Embryo-Fetal Toxicity

Based on its mechanism of action and findings in animal studies, pertuzumab products can cause fetal harm when administered to a pregnant woman. Pertuzumab products are HER2/neu receptor antagonists. Cases of oligohydramnios and oligohydramnios sequence manifesting as pulmonary hypoplasia, skeletal abnormalities, and neonatal death have been reported with use of another HER2/neu receptor antagonist (trastuzumab) during pregnancy.

Verify the pregnancy status of females of reproductive potential prior to the initiation of POHERDY. Advise pregnant women and females of reproductive potential that exposure to POHERDY in combination with trastuzumab during pregnancy or within 7 months prior to conception can result in fetal harm, including embryo-fetal death or birth defects. Advise females of reproductive potential to use effective contraception during treatment and for 7 months following the last dose of POHERDY in combination with trastuzumab.

Infusion-Related Reactions

Pertuzumab products can cause serious infusion reactions, including fatal events.

In CLEOPATRA, on the first day, when only pertuzumab was administered, infusion-related reactions occurred in 13% of patients, and <1% were Grade 3 or 4. The most common infusion reactions (≥1%) were pyrexia, chills, fatigue, headache, asthenia, hypersensitivity, and vomiting. During the second cycle when all drugs were administered on the same day, the most common infusion reactions in the pertuzumab-treated group (≥1%) were fatigue, dysgeusia, hypersensitivity, myalgia, and vomiting.

In APHINITY, when pertuzumab was administered in combination with trastuzumab and chemotherapy on the same day, infusion-related reactions occurred in 21% of patients, with <1% of patients experiencing Grade 3-4 events.

Observe patients closely for 60 minutes after the first infusion and for 30 minutes after subsequent infusions of POHERDY. If a significant infusion-related reaction occurs, slow or interrupt the infusion, and administer appropriate medical therapies. Monitor patients carefully until complete resolution of signs and symptoms. Consider permanent discontinuation in patients with severe infusion reactions.

Hypersensitivity Reactions/Anaphylaxis

Pertuzumab products can cause hypersensitivity reactions, including anaphylaxis.

In CLEOPATRA, the overall frequency of hypersensitivity/anaphylaxis reactions was 11% in pertuzumab-treated patients, with Grade 3-4 hypersensitivity reactions and anaphylaxis occurring in 2% of patients.

In NeoSphere, TRYPHAENA, BERENICE, and APHINITY, hypersensitivity/anaphylaxis events were consistent with those observed in CLEOPATRA. In APHINITY, the overall frequency of hypersensitivity/anaphylaxis was 5% in the pertuzumab-treated group. The incidence was highest in the pertuzumab plus TCH–treated group (8%), with 1% Grade 3-4 events.

Observe patients closely for hypersensitivity reactions. Severe hypersensitivity, including anaphylaxis and fatal events, has been observed in patients treated with pertuzumab products. Angioedema has been described in postmarketing reports. Medications to treat such reactions, as well as emergency equipment, should be available for immediate use prior to administration of POHERDY.  

ADVERSE REACTIONS

Metastatic Breast Cancer The most common adverse reactions (>30%) with pertuzumab in combination with trastuzumab and docetaxel were diarrhea, alopecia, neutropenia, nausea, fatigue, rash, and peripheral neuropathy.

Neoadjuvant Treatment of Breast Cancer The most common adverse reactions (>30%) with pertuzumab in combination with trastuzumab and docetaxel were alopecia, diarrhea, nausea, and neutropenia.

The most common adverse reactions (>30%) with pertuzumab in combination with trastuzumab and docetaxel when given for 3 cycles following 3 cycles of FEC were fatigue, alopecia, diarrhea, nausea, vomiting, and neutropenia.

The most common adverse reactions (>30%) with pertuzumab in combination with TCH were fatigue, alopecia, diarrhea, nausea, vomiting, neutropenia, thrombocytopenia, and anemia.

The most common adverse reactions (>30%) with pertuzumab in combination with trastuzumab and paclitaxel when given for 4 cycles following 4 cycles of ddAC were nausea, diarrhea, alopecia, fatigue, constipation, peripheral neuropathy, and headache.

The most common adverse reactions (>30%) with pertuzumab in combination with trastuzumab and docetaxel when given for 4 cycles following 4 cycles of FEC were diarrhea, nausea, alopecia, asthenia, constipation, fatigue, mucosal inflammation, vomiting, myalgia, and anemia.

Adjuvant Treatment of Breast Cancer The most common adverse reactions (>30%) with pertuzumab in combination with trastuzumab and chemotherapy were diarrhea, nausea, alopecia, fatigue, peripheral neuropathy, and vomiting.

Before prescribing POHERDY, please read the Prescribing Information, including the Boxed Warning about left ventricular dysfunction and embryo-fetal toxicity.

About Henlius

Henlius (2696.HK) is a global biopharmaceutical company with the vision to offer high-quality, affordable and innovative biologic medicines for patients worldwide with a focus on oncology, autoimmune diseases and ophthalmic diseases. To date, 10 products have been approved for marketing across multiple countries and regions, and 3 marketing applications have been accepted for review in China, the U.S. and the EU, respectively. Since its inception in 2010, Henlius has built an integrated biopharmaceutical platform with core capabilities of high-efficiency and innovation embedded throughout the whole product life cycle including R&D, manufacturing and commercialization. It has established global innovation centre and Shanghai-based commercial manufacturing facilities certificated by China, the EU and U.S. GMP.

Henlius has pro-actively built a diversified and high-quality product pipeline covering about 50 molecules and has continued to explore immuno-oncology combination therapies with proprietary HANSIZHUANG (anti-PD-1 mAb) as the backbone. To date, the company's launched products include HANSIZHUANG (serplulimab, trade name: Hetronifly® in Europe), the world’s first anti-PD-1 mAb for the first-line treatment of SCLC, HANQUYOU (trastuzumab, trade name: HERCESSI™ in the U.S., Zercepac® in Europe), a China-developed mAb biosimilar approved in China, Europe and U.S., HANLIKANG (rituximab), the first China-developed biosimilar, denosumab Bildyos® and Bilprevda®, and pertuzumab Poherdy®. What’s more, Henlius has conducted over 30 clinical studies for 19 products, expanding its presence in major markets as well as emerging markets.

To learn more about Henlius, visit https://www.henlius.com/en/index.html and connect with us on LinkedIn at https://www.linkedin.com/company/henlius/.

About Organon

Organon (NYSE: OGN) is a global healthcare company with a mission to deliver impactful medicines and solutions for a healthier every day. With a portfolio of over 70 products across Women’s Health and General Medicines, which includes biosimilars, Organon focuses on addressing health needs that uniquely, disproportionately or differently affect women, while expanding access to essential treatments in over 140 markets.

Headquartered in Jersey City, New Jersey, Organon is committed to advancing access, affordability, and innovation in healthcare. Learn more at www.organon.com and follow us on LinkedIn, Instagram, X, YouTube, TikTok and Facebook.

Cautionary Note Regarding Forward-Looking Statements

Except for historical information, this press release includes 「forward-looking statements」 within the meaning of the safe harbor provisions of the US Private Securities Litigation Reform Act of 1995, including, but not limited to, statements about expanding access to treatments for patients with HER2-positive breast cancer, the potential market opportunity for POHERDY, the expansion of Organon’s biosimilars portfolio, Organon’s collaboration with Henlius, and Henlius’ global expansion and biologics development. Forward-looking statements may be identified by words such as 「goal,」 「continue,」 「forward,」 「vision,」 「mission,」 「expect,」 「explore,」  「future,」 「believes,」 「will,」 「potential,」 or words of similar meaning. These statements are based upon the current beliefs and expectations of the company’s management and are subject to significant risks and uncertainties. If underlying assumptions prove inaccurate, or risks or uncertainties materialize, actual results may differ materially from those set forth in the forward-looking statements. Risks and uncertainties include, but are not limited to, an inability to market HLX11, an investigational biosimilar of PERJETA (pertuzumab), in Europe; expanded brand and class competition in the markets in which Organon operates; trade protection measures and import or export licensing requirements, including the direct and indirect impacts of tariffs (including any potential pharmaceutical sector tariffs), trade sanctions or similar restrictions by the US or other governments; changes in US and foreign federal, state and local governmental funding allocations including the timing and amounts allocated to Organon’s customers and business partners; economic factors over which Organon has no control, including changes in inflation, interest rates, recessionary pressures, and foreign currency exchange rates; difficulties with performance of third parties Organon relies on for its business growth; the failure of any supplier to provide substances, materials, or services as agreed, or otherwise meet their obligations to us; the increased cost of supply, manufacturing, packaging, and operations; difficulties developing and sustaining relationships with commercial counterparties; pricing pressures globally, including rules and practices of managed care groups, judicial decisions and governmental laws and regulations related to or affecting Medicare, Medicaid and health care reform, pharmaceutical pricing and reimbursement, access to our products, international reference pricing, including Most-Favored-Nation drug pricing, and other pricing-related initiatives and policy efforts; an inability to fully execute on Organon’s product development and commercialization plans; manufacturing difficulties or delays; disruptions at the US Food and Drug Administration, the US Securities and Exchange Commission (the 「SEC」) and other US and comparable foreign government agencies; changes in government laws and regulations in the United States and other jurisdictions, including laws and regulations governing the research, development, approval, clearance, manufacturing, supply, distribution, and/or marketing of our products and related intellectual property, environmental regulations, and the enforcement thereof affecting Organon’s business; efficacy, safety or other quality concerns with respect to our marketed products, whether or not scientifically justified, leading to product recalls, withdrawals, labeling changes, or declining sales; future actions of third parties, including significant changes in customer relationships or changes in the behavior and spending patterns of purchasers of health care products and services, including delaying medical procedures, rationing prescription medications, reducing the frequency of physician visits and forgoing health care insurance coverage; the failure by Organon or its third party collaborators and/or their suppliers to fulfill our or their regulatory or quality obligations; and volatility of commodity prices, fuel, shipping rates that impact the costs and/or ability to supply Organon’s products. The company undertakes no obligation to publicly update any forward-looking statement, whether as a result of new information, future events or otherwise. Additional factors that could cause results to differ materially from those described in the forward-looking statements can be found in the company’s filings with the SEC, including the company’s most recent Annual Report on Form 10-K (as amended), Quarterly Reports on Form 10-Q (as amended), Current Reports on Form 8-K, and other SEC filings, available at the SEC’s Internet site (www.sec.gov).

PERJETA is a trademark registered in the US by Genentech, Inc.; Organon is not associated with this trademark owner.