Case Report of Mabwell's Nectin-4 targeting ADC (9MW2821) in Cervical Cancer Published in The New England Journal of Medicine - Thailand PR News - [Banking](https://thailandbusinessnews.net/category/banking/) - [Companies](https://thailandbusinessnews.net/category/companies/) - [Economy](https://thailandbusinessnews.net/category/economy/) - [Press Releases](https://thailandbusinessnews.net/category/press-release/) - [PR Newswire](https://thailandbusinessnews.net/pr-newswire-updates/) - [Tech](https://thailandbusinessnews.net/category/tech/) - [Tourism](https://thailandbusinessnews.net/category/tourism/) - [Press Release](https://thailandbusinessnews.net/category/press-release/) # Case Report of Mabwell's Nectin-4 targeting ADC (9MW2821) in Cervical Cancer Published in The New England Journal of Medicine ##### Up next ###### [Innovent to Present New Clinical Data of IBI363（PD-1/IL-2α-biased bispecific fusion protein） at the 2026 ASCO Annual Meeting](https://thailandbusinessnews.net/press-release/innovent-to-present-new-clinical-data-of-ibi363%ef%bc%88pd-1-il-2%ce%b1-biased-bispecific-fusion-protein%ef%bc%89-at-the-2026-asco-annual-meeting/) Published on 22 April 2026 ##### Author ##### [ CISION PRNewswire ](https://thailandbusinessnews.net/author/cision/) ##### Tags - [PRNewswire](https://thailandbusinessnews.net/tag/prnewswire/) SHANGHAI, April 22, 2026 /PRNewswire/ — Mabwell (688062.SH), an innovation-driven biopharmaceutical company with a fully integrated industrial chain, announced that a recent clinical case report on its self-developed novel Nectin-4 ADC (bulumtatug fuvedotin, R&D code: 9MW2821) for the treatment of cervical cancer has been published in *The New England Journal of Medicine* (NEJM, Impact Factor: 78.5), a leading international medical journal. The article, published by the team of Dr. Wang Shanbing, Director of the Oncology Center at the Second People’s Hospital of Yibin, reveals for the first time globally a rare case of hepatic "pseudoprogression" phenomenon observed in a patient with advanced cervical cancer following treatment with the novel Nectin-4 ADC (9MW2821). Pseudoprogression generally refers to a phenomenon where existing lesions temporarily enlarge or new lesions appear early in immunotherapy, without clinical deterioration, followed by subsequent stabilization or shrinkage—typically not representing true tumor progression. This article reports the case of a patient with metastatic cervical squamous-cell carcinoma whose disease was refractory to platinum–taxane chemotherapy with no prior immunotherapy. After just two cycles of treatment with 9MW2821, the patient’s baseline metastatic lesions showed substantial regression, and serum squamous cell carcinoma (SCC) antigen levels dropped precipitously—from 37.0 ng/mL to 1.2 ng/mL (normal range ≤1.5). However, despite comprehensive improvement across multiple indicators, a CT scan unexpectedly revealed a "new hypoattenuating lesion " measuring 1.8 cm × 2.5 cm in the medial segment of the left lobe of the liver. A liver biopsy showed dense infiltration of lymphocytes, plasma cells, and neutrophils, with no evidence of granulomas, spindle cell proliferation, or viable tumor cells. The biopsy results ruled out disease progression, sarcoid-like reactions, or inflammatory pseudotumor. Given the patient’s p16-positive status (implying high HPV antigenicity) and the absence of previous immunotherapy, Dr. Wang Shanbing’s team hypothesized that the antibody-drug conjugate (ADC) targeted occult micrometastases, inducing immune-cell death and releasing damage-associated molecular patterns that triggered this robust inflammatory influx. The patient continued treatment, and subsequent imaging showed gradual resolution of the liver lesion, with no reappearance during two years of follow-up. ADCs are hailed as "magic bullets" for precisely targeting tumors. Previously, pseudoprogression has been predominantly observed in immunotherapies such as PD‑1/PD‑L1 inhibitors, whereas its occurrence in ADC therapy for solid tumors is considered exceedingly rare. This finding by Dr. Wang Shanbing’s team carries significant implications for the clinical management of advanced cervical cancer. The article strongly emphasizes that treatment that could prolong life should not be prematurely discontinued based solely on radiographic "false impressions," providing a valuable reference for the clinical application of ADCs and safeguarding optimal therapeutic benefits for oncology patients. 9MW2821 is the world’s first Nectin-4 ADC candidate to enter Phase III clinical trials for cervical cancer. Currently, enrollment for the monotherapy Phase III trial has been completed. Interim analysis is expected to be conducted and pre-NDA to be submitted in H2 2026. The first-line combination study with toripalimab is in Phase II. About Mabwell Mabwell (688062.SH) is an innovation-driven biopharmaceutical company with capabilities spanning the entire pharmaceutical value chain. The company is committed to providing more effective and accessible therapies to meet global medical needs, with a focus on oncology and aging-related diseases. Mabwell’s mission is "Explore Life, Benefit Health" and its vision is "Innovation, from Ideas to Reality." For more information, please visit [www.mabwell.com/en](https://www.mabwell.com/en). Forward-Looking Statements This press release contains forward-looking statements including, but not limited to, the potential safety, efficacy, regulatory review or approval and commercial success of our product candidates and those relating to the Company’s product development, clinical studies, clinical and regulatory milestones and timelines, market opportunity, competitive position, possible or assumed future results of operations, business strategies, potential growth opportunities and other statements that are predictive in nature. "Forward-looking statements" are statements that are not historical facts and involve a number of risks and uncertainties, which may cause actual results to be materially different from any future results expressed or implied in the forward-looking statements. These statements may be identified by the use of forward-looking expressions, including, but not limited to, "expect," "anticipate," "intend," "plan," "believe," "estimate," "potential," "predict," "project," "should," "would," and similar expressions and the negatives of those terms. Forward-looking statements are based on the Company’s current expectations and assumptions. Forward-looking statements are subject to a number of risks, uncertainties, and other factors, many of which are beyond the Company’s control, including, but not limited to: environment; politic; economy; society; legislation; our dependence on our product candidates, most of which are still in preclinical or various stages of clinical development; our reliance on third-party vendors, such as contract research organizations and contract manufacturing organizations; the uncertainties inherent in clinical testing; our ability to complete required clinical trials for our product candidates and obtain approval from regulatory authorities for our product candidates; our ability to protect our intellectual property; the loss of any executive officers or key personnel. In case one or more of these risks or uncertainties deteriorate, or any assumptions are incorrect, the actual results may be seriously inconsistent with the stated results. The Company cautions all the persons not to place undue reliance on any such forward-looking statements, which speaks only as of the date of this press release. The Company disclaims any obligation, except as specifically required by law and the rules of the applicable Stock authority to publicly update or revise any such statements to reflect any change in expectations or in events, conditions, or circumstances on which any such statements may be based, or that may affect the likelihood that actual results will differ from those set forth in the forward-looking statements. All forward-looking descriptions, figures and assumptions in this press release are applicable to this statement. [Source link ](http://www.prnasia.com/story/archive/4939582_AE39582_0?rand=89749) ``` This content was prepared by our news partner, Cision PR Newswire. The opinions and the content published on this page are the author’s own and do not necessarily reflect the views of Siam News Network ``` ##### You May Also Like [](https://thailandbusinessnews.net/press-release/student-agency-in-action-hong-kong-academy-redefines-environmental-stewardship-through-student-led-earth-day-and-yard-sale-initiatives/) ## Student Agency in Action: Hong Kong Academy Redefines Environmental Stewardship Through Student-Led Earth Day and Yard Sale Initiatives HONG KONG, May 13, 2026 /PRNewswire/ — In a world where environmental and… - [CISION PRNewswire](https://thailandbusinessnews.net/author/cision/ "View all posts by CISION PRNewswire") - May 13, 2026 [](https://thailandbusinessnews.net/press-release/heartbeats-launches-digital-wellness-platform-led-by-world-renowned-heart-specialist-dr-hosen-kiat/) ![Heartbeats Launches Digital Wellness Platform Led by World-Renowned Heart Specialist Dr. Hosen Kiat](https://i0.wp.com/r2.thailandbusinessnews.net/2025/08/IMG_9158.jpg?resize=260%2C140&ssl=1 "Heartbeats Launches Digital Wellness Platform Led by World-Renowned Heart Specialist Dr. Hosen Kiat") - 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