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[6-K] Legend Biotech Corp Current Report (Foreign Issuer)

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Legend Biotech (LEGN) announced U.S. FDA approval of a CARVYKTI label update to include overall survival (OS) results from the Phase 3 CARTITUDE-4 study. The update states CARVYKTI showed a statistically significant OS improvement versus standard of care in relapsed/refractory multiple myeloma after one to three prior lines of therapy. At a median follow-up of 33.6 months, neither treatment arm reached median OS, indicating durable survival has not yet been fully characterized.

The label also adds immune effector cell‑associated enterocolitis (IEC‑EC) to the Boxed Warnings and Warnings and Precautions, noting cases with severe or prolonged diarrhea, abdominal pain, weight loss, and rare fatalities from perforation or sepsis. Additionally, John Cunningham (JC) virus reactivation leading to progressive multifocal leukoencephalopathy (PML) was added to Warnings and Precautions (Infections) and Postmarketing Experience, including fatal cases. Physicians are advised to follow institutional guidelines for IEC‑EC management and conduct appropriate diagnostic evaluations for neurological events.

Legend Biotech (LEGN) ha annunciato l'approvazione da parte della FDA statunitense di un aggiornamento dell'etichetta di CARVYKTI per includere i risultati di sopravvivenza globale (OS) dallo studio di fase 3 CARTITUDE-4. L'aggiornamento mostra che CARVYKTI ha raggiunto un miglioramento OS statisticamente significativo rispetto alla terapia standard di riferimento in mieloma multiplo ricorrente/refrattario dopo una o tre linee di terapia precedenti. Con un follow-up mediano di 33,6 mesi, nessuna delle due braccia di trattamento ha raggiunto la sopravvivenza mediana, indicando che una sopravvivenza duratura non è ancora stata completamente caratterizzata.

L'etichetta aggiunge anche IEC-EC (immune effector cell-associated enterocolitis) alle Avvertenze nella sezione Evidenziazioni/Avvertenze e Precauzioni, segnalando casi con diarrea grave o prolungata, dolore addominale, perdita di peso e decessi rari per perforazione o sepsi. Inoltre, la riattivazione del virus JC (JC) che porta a la leucoencefalopatia multifocale progressiva (PML) è stata aggiunta alle Sezioni Avvertenze e Precauzioni (Infezioni) e all'Esperienza post-marketing, inclusi casi fatali. Si raccomanda ai medici di attenersi alle linee guida istituzionali per la gestione di IEC‑EC e di eseguire opportune valutazioni diagnostiche per eventi neurologici.

Legend Biotech (LEGN) anunció la aprobación por la FDA de EE. UU. de una actualización de la etiqueta de CARVYKTI para incluir los resultados de supervivencia global (OS) del estudio de fase 3 CARTITUDE-4. La actualización indica que CARVYKTI mostró una mejora de OS estadísticamente significativa en comparación con la atención habitual en pacientes con mieloma múltiple recaído/refractario tras de una a tres líneas de terapia previas. Con un seguimiento mediano de 33,6 meses, ninguna de las dos ramas de tratamiento alcanzó la OS mediana, lo que indica que la supervivencia duradera aún no se ha caracterizado por completo.

La etiqueta también añade IEC-EC (enterocolitis asociada a células efectoras inmunes) a las Advertencias en el recuadro y a Advertencias y Precauciones, notando casos con diarrea severa o prolongada, dolor abdominal, pérdida de peso y muertes raras por perforación o sepsis. Además, se añadió la reactivación del virus JC (JC) que provoca leucoencefalopatía multifocal progresiva (PML) a Advertencias y Precauciones (Infecciones) y a la Experiencia posterior a la comercialización, incluyendo casos fatales. Se recomienda a los médicos seguir las directrices institucionales para la gestión de IEC‑EC y realizar las evaluaciones diagnósticas apropiadas ante eventos neurológicos.

Legend Biotech (LEGN) 은 CARVYKTI 라벨 업데이트에 대한 미국 FDA의 승인을 발표했습니다 CARTITUDE-4 임상 3상 연구의 전체 생존(OS) 결과를 포함하기 위한 업데이트입니다. 업데이트에 따르면 CARVYKTI 는 이전 치료 라인 1~3회에서 표준 치료에 비해 통계적으로 유의한 OS 개선을 보였습니다. 중간 추적 관찰 기간이 33.6개월일 때, 두 치료군 모두 중앙생존기간(median OS)에 도달하지 못해 지속적인 생존이 아직 완전히 규명되지 않았음을 나타냅니다.

또한 라벨에는 IEC-EC (면역 효과기 세포 관련 엔테로콜리티스) 를 상자형 경고 및 경고 및 주의사항에 추가하고, 심한 설사나 장간 대통, 복부 통증, 체중 감소, 및 천발 perforation 또는 패혈증으로 인한 드문 사망 사례를 언급합니다. 또한, JC 바이러스 재활성화로 인한 진행성 다발성 백질 뇌병증(PML) 도 경고 및 주의사항(Infections) 및 시판 후 경험에 추가되었으며, 치명적 사례를 포함합니다. 의사들은 IEC‑EC 관리에 대한 기관의 지침을 따르고 신경학적 이벤트에 대한 적절한 진단 평가를 수행해야 합니다.

Legend Biotech (LEGN) a annoncé l'approbation par la FDA américaine d'une mise à jour de l'étiquette de CARVYKTI afin d'inclure les résultats de survie globale (OS) issus de l'étude de phase 3 CARTITUDE-4. La mise à jour indique que CARVYKTI a démontré une amélioration OS statistiquement significative par rapport aux soins de support dans le myélome multiple relapsé/réfractaire après une ou trois lignes de thérapie préalables. Avec un suivi médian de 33,6 mois, aucune des deux branches n'a atteint la survie médiane, ce qui indique que la survie durable n'est pas encore entièrement caractérisée.

La étiquette ajoute également IEC‑EC (entérocolite associée aux cellules effectrices immunitaires) aux Avertissements dans le cadre et aux Avertissements et précautions, notant des cas de diarrhée sévère ou prolongée, douleur abdominale, perte de poids et décès rares par perforation ou sepsis. De plus, la réactivation du virus JC (JC) entraînant une leucencéphalopathie multifocale progressive (PML) a été ajoutée aux Avertissements et précautions (Infections) et à l'Expérience post-commercialisation, y compris des cas mortels. Les médecins sont priés de suivre les directives institutionnelles pour la gestion de IEC‑EC et d'effectuer les évaluations diagnostics appropriées en cas d'événements neurologiques.

Legend Biotech (LEGN) hat die Genehmigung der US-amerikanischen FDA für eine Aktualisierung des CARVYKTI-Etiketts angekündigt, um die Ergebnisse der Gesamtüberlebenszeit (OS) aus der Phase-3-Studie CARTITUDE-4 einzuschließen. Die Aktualisierung besagt, dass CARVYKTI im Vergleich zur Standardbehandlung bei rezidiviertem/refraktärem Multiplen Myelom nach ein bis drei Vorlinien der Therapie eine statistisch signifikante OS-Verbesserung zeigte. Bei einer medianen Nachbeobachtungszeit von 33,6 Monaten erreichte keine der Behandlungsarme eine mediale OS, was darauf hindeutet, dass das dauerhafte Überleben noch nicht vollständig charakterisiert ist.

Das Label ergänzt außerdem IEC‑EC (immune effector cell‑associated enterocolitis) zu den Boxed Warnings und Warnings and Precautions, mit Hinweisen auf Fälle von schwerer oder anhaltender Durchfall, abdominalem Schmerz, Gewichtsverlust und seltenen Todesfällen durch Perforation oder Sepsis. Zusätzlich wurde die Reaktivierung des JC-Virus (JC), die zu progressiver multifokaler Leukenzephalopathie (PML) führt zu Warning and Precautions (Infections) und Postmarketing Experience aufgenommen, einschließlich tödlicher Fälle. Ärzte werden aufgefordert, die institutsinternen Richtlinien für das Management von IEC‑EC zu befolgen und geeignete diagnostische Abklärungen bei neurologischen Ereignissen durchzuführen.

أعلنت Legend Biotech (LEGN) عن موافقة إدارة الغذاء والدواء الأمريكية (FDA) على تحديث لملصق CARVYKTI ليشمل نتائج البقاء على قيد الحياة الإجمالية (OS) من دراسة CARTITUDE-4 من المرحلة 3. وتشير التحديثات إلى أن CARVYKTI أظهرت تحسناً ذا دلالة إحصائية في OS مقارنة بالرعاية القياسية في مرضى الورم النخاعي المتعدد المتكرر/المقاوم بعد سطرين إلى ثلاثة أسطر من العلاج السابقة. عند متابعة وسيطة قدرها 33.6 شهرًا، لم يصل أي من ذراعين العلاج إلى معدل البقاء على قيد الحياة الوسيط، ما يوحي بأن البقاء الفعّال المستمر لم يتم توثيقه بشكل كامل حتى الآن.

كما يضيف الملصق اضطرابات الخلايا الاندفاعية المناعية المعوية المرتبطة بالخلايا المناعية (IEC-EC) إلى التحذيرات في الإطار وإلى التحذيرات والاحتياطات، مشيرًا إلى حالات من الإسهال الشديد أو المستمر، ألم بطني، فقدان وزن، وفي وفيات نادرة بسبب الثقب أو تعفن الدم. بالإضافة إلى ذلك، تم إضافة إعادة تنشيط فيروس JC (JC) الذي يؤدي إلى التصلب العصبي الدماغي المتقدم متعدد البؤر (PML) إلى التحذيرات والاحتياطات (العدوى) وتجربة ما بعد التسويق، بما في ذلك حالات وفيات. يُنصح الأطباء باتباع إرشادات المؤسسة لإدارة IEC‑EC وإجراء التقييمات التشخيصية المناسبة عند حدوث أحداث عصبية.

Legend Biotech (LEGN) 宣布美国食品药品监督管理局(FDA)批准 CARVYKTI 标签更新,以纳入来自3期 CARTITUDE-4 研究的总体生存(OS)结果。更新显示,在经历一至三线既往治疗后,CARVYKTI 相对于标准治疗在总体生存方面具有统计学意义的改善。在中位随访33.6个月时,两组治疗都未达到中位OS,表明持久生存尚未完全明确。

标签还将 免疫效应细胞相关结肠炎(IEC-EC) 纳入盒状警告及警告与注意事项,指出重度或持续性腹泻、腹痛、体重下降,以及罕见的穿孔或败血症导致的死亡病例。此外,JC病毒再激活导致进行性多灶性白质脑病(PML) 已被加入到警告与注意事项(感染)以及上市后经验中,包括致命病例。医生被建议遵循机构指南进行 IEC‑EC 的管理,并对神经事件进行适当的诊断评估。

Positive
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Insights

Label now includes OS benefit while adding serious safety warnings.

CARVYKTI gained an FDA label update citing a statistically significant overall survival advantage versus standard of care in CARTITUDE‑4. At a median follow‑up of 33.6 months, median OS was not reached in either arm, suggesting survival curves remain immature in absolute terms even with a favorable comparison.

Concurrently, safety content was strengthened: IEC‑EC moved into the Boxed Warnings with severe GI manifestations and rare fatal outcomes, and JC virus/PML was added to Warnings and Precautions and Postmarketing Experience. These additions formalize risk recognition and may influence patient selection and monitoring.

The net effect balances efficacy recognition with clearer risk labeling. Commercial and utilization impact will depend on clinician comfort with monitoring protocols and institutional management practices disclosed here.

Legend Biotech (LEGN) ha annunciato l'approvazione da parte della FDA statunitense di un aggiornamento dell'etichetta di CARVYKTI per includere i risultati di sopravvivenza globale (OS) dallo studio di fase 3 CARTITUDE-4. L'aggiornamento mostra che CARVYKTI ha raggiunto un miglioramento OS statisticamente significativo rispetto alla terapia standard di riferimento in mieloma multiplo ricorrente/refrattario dopo una o tre linee di terapia precedenti. Con un follow-up mediano di 33,6 mesi, nessuna delle due braccia di trattamento ha raggiunto la sopravvivenza mediana, indicando che una sopravvivenza duratura non è ancora stata completamente caratterizzata.

L'etichetta aggiunge anche IEC-EC (immune effector cell-associated enterocolitis) alle Avvertenze nella sezione Evidenziazioni/Avvertenze e Precauzioni, segnalando casi con diarrea grave o prolungata, dolore addominale, perdita di peso e decessi rari per perforazione o sepsi. Inoltre, la riattivazione del virus JC (JC) che porta a la leucoencefalopatia multifocale progressiva (PML) è stata aggiunta alle Sezioni Avvertenze e Precauzioni (Infezioni) e all'Esperienza post-marketing, inclusi casi fatali. Si raccomanda ai medici di attenersi alle linee guida istituzionali per la gestione di IEC‑EC e di eseguire opportune valutazioni diagnostiche per eventi neurologici.

Legend Biotech (LEGN) anunció la aprobación por la FDA de EE. UU. de una actualización de la etiqueta de CARVYKTI para incluir los resultados de supervivencia global (OS) del estudio de fase 3 CARTITUDE-4. La actualización indica que CARVYKTI mostró una mejora de OS estadísticamente significativa en comparación con la atención habitual en pacientes con mieloma múltiple recaído/refractario tras de una a tres líneas de terapia previas. Con un seguimiento mediano de 33,6 meses, ninguna de las dos ramas de tratamiento alcanzó la OS mediana, lo que indica que la supervivencia duradera aún no se ha caracterizado por completo.

La etiqueta también añade IEC-EC (enterocolitis asociada a células efectoras inmunes) a las Advertencias en el recuadro y a Advertencias y Precauciones, notando casos con diarrea severa o prolongada, dolor abdominal, pérdida de peso y muertes raras por perforación o sepsis. Además, se añadió la reactivación del virus JC (JC) que provoca leucoencefalopatía multifocal progresiva (PML) a Advertencias y Precauciones (Infecciones) y a la Experiencia posterior a la comercialización, incluyendo casos fatales. Se recomienda a los médicos seguir las directrices institucionales para la gestión de IEC‑EC y realizar las evaluaciones diagnósticas apropiadas ante eventos neurológicos.

Legend Biotech (LEGN) 은 CARVYKTI 라벨 업데이트에 대한 미국 FDA의 승인을 발표했습니다 CARTITUDE-4 임상 3상 연구의 전체 생존(OS) 결과를 포함하기 위한 업데이트입니다. 업데이트에 따르면 CARVYKTI 는 이전 치료 라인 1~3회에서 표준 치료에 비해 통계적으로 유의한 OS 개선을 보였습니다. 중간 추적 관찰 기간이 33.6개월일 때, 두 치료군 모두 중앙생존기간(median OS)에 도달하지 못해 지속적인 생존이 아직 완전히 규명되지 않았음을 나타냅니다.

또한 라벨에는 IEC-EC (면역 효과기 세포 관련 엔테로콜리티스) 를 상자형 경고 및 경고 및 주의사항에 추가하고, 심한 설사나 장간 대통, 복부 통증, 체중 감소, 및 천발 perforation 또는 패혈증으로 인한 드문 사망 사례를 언급합니다. 또한, JC 바이러스 재활성화로 인한 진행성 다발성 백질 뇌병증(PML) 도 경고 및 주의사항(Infections) 및 시판 후 경험에 추가되었으며, 치명적 사례를 포함합니다. 의사들은 IEC‑EC 관리에 대한 기관의 지침을 따르고 신경학적 이벤트에 대한 적절한 진단 평가를 수행해야 합니다.

Legend Biotech (LEGN) a annoncé l'approbation par la FDA américaine d'une mise à jour de l'étiquette de CARVYKTI afin d'inclure les résultats de survie globale (OS) issus de l'étude de phase 3 CARTITUDE-4. La mise à jour indique que CARVYKTI a démontré une amélioration OS statistiquement significative par rapport aux soins de support dans le myélome multiple relapsé/réfractaire après une ou trois lignes de thérapie préalables. Avec un suivi médian de 33,6 mois, aucune des deux branches n'a atteint la survie médiane, ce qui indique que la survie durable n'est pas encore entièrement caractérisée.

La étiquette ajoute également IEC‑EC (entérocolite associée aux cellules effectrices immunitaires) aux Avertissements dans le cadre et aux Avertissements et précautions, notant des cas de diarrhée sévère ou prolongée, douleur abdominale, perte de poids et décès rares par perforation ou sepsis. De plus, la réactivation du virus JC (JC) entraînant une leucencéphalopathie multifocale progressive (PML) a été ajoutée aux Avertissements et précautions (Infections) et à l'Expérience post-commercialisation, y compris des cas mortels. Les médecins sont priés de suivre les directives institutionnelles pour la gestion de IEC‑EC et d'effectuer les évaluations diagnostics appropriées en cas d'événements neurologiques.

Legend Biotech (LEGN) hat die Genehmigung der US-amerikanischen FDA für eine Aktualisierung des CARVYKTI-Etiketts angekündigt, um die Ergebnisse der Gesamtüberlebenszeit (OS) aus der Phase-3-Studie CARTITUDE-4 einzuschließen. Die Aktualisierung besagt, dass CARVYKTI im Vergleich zur Standardbehandlung bei rezidiviertem/refraktärem Multiplen Myelom nach ein bis drei Vorlinien der Therapie eine statistisch signifikante OS-Verbesserung zeigte. Bei einer medianen Nachbeobachtungszeit von 33,6 Monaten erreichte keine der Behandlungsarme eine mediale OS, was darauf hindeutet, dass das dauerhafte Überleben noch nicht vollständig charakterisiert ist.

Das Label ergänzt außerdem IEC‑EC (immune effector cell‑associated enterocolitis) zu den Boxed Warnings und Warnings and Precautions, mit Hinweisen auf Fälle von schwerer oder anhaltender Durchfall, abdominalem Schmerz, Gewichtsverlust und seltenen Todesfällen durch Perforation oder Sepsis. Zusätzlich wurde die Reaktivierung des JC-Virus (JC), die zu progressiver multifokaler Leukenzephalopathie (PML) führt zu Warning and Precautions (Infections) und Postmarketing Experience aufgenommen, einschließlich tödlicher Fälle. Ärzte werden aufgefordert, die institutsinternen Richtlinien für das Management von IEC‑EC zu befolgen und geeignete diagnostische Abklärungen bei neurologischen Ereignissen durchzuführen.

 
 

 

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

 

 

 

FORM 6-K

 

 

 

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16

of the Securities Exchange Act of 1934

 

Date of Report: October 10, 2025

 

Commission File Number: 001-39307

 

 

 

Legend Biotech Corporation

(Exact Name of Registrant as Specified in its Charter)

 

 

 

2101 Cottontail Lane

Somerset, New Jersey 08873

(Address of principal executive office)

 

 

 

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

 

Form 20-F  ☒            Form 40-F  ☐

 

 

 

 

 

 

 

 

 

 

 

Legend Biotech Announces U.S. FDA Approves Label Updates for CARVYKTI® CAR-T Cell Therapy to Include Overall Survival Data

 

On October 10, 2025, Legend Biotech Corporation announced that the U.S. Food and Drug Administration (FDA) has approved a label update for CARVYKTI® (ciltacabtagene autoleucel, cilta-cel) to include the overall survival (OS) analysis from the Phase 3 CARTITUDE-4 study showing a statistically significant improvement in OS for CARVYKTI compared to the standard of care therapy in patients with relapsed, refractory multiple myeloma after one to three prior lines of therapy.

 

The label update is based on results from the prespecified second interim analysis of the CARTITUDE-4 study which demonstrated at a median follow-up of 33.6 months, neither CARVYKTI or standard of care therapy arms reached median OS in patients with one to three prior lines of therapy.

 

CARVYKTI® Label Updated to Include Immune Effector Cell-associated Enterocolitis and John Cunningham Virus Leading to Progressive Multifocal Leukoencephalopathy

 

In connection with the CARVYKTI label update to include updated OS data, immune effector cell-associated enterocolitis (IEC-EC) has been added to Boxed Warnings and Warnings and Precautions section of the label. IEC-EC has occurred in patients treated with CARVYKTI with manifestations including severe or prolonged diarrhea, abdominal pain and weight loss requiring parenteral nutrition. IEC-EC has been associated with fatal outcomes from perforation or sepsis.

 

FDA recommends that prescribing physicians manage adverse events of IEC-EC according to institutional guidelines and conduct additional workup to exclude alternative etiologies, including T-cell lymphoma of the GI tract, which has been reported in the postmarketing setting.

 

Reactivation of John Cunningham (JC) virus, leading to progressive multifocal leukoencephalopathy (PML) was also added to Warnings and Precautions (under Infections) and Postmarketing Experience. PML has occurred in patients treated with CARVYKTI including cases with fatal outcomes. It is recommended that prescribing physicians perform appropriate diagnostic evaluations in patients with neurological adverse events.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

This report on Form 6-K is hereby incorporated herein by reference in the registration statements of the Company on Form F-3 (Registration Nos. 333-278050, 333-272222, and 333-257625) and Form S-8 (Registration Nos. 333-239478 and 333-283217), to the extent not superseded by documents or reports subsequently filed.

 

SIGNATURES

 

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

 

  LEGEND BIOTECH CORPORATION
     
Date: October 10, 2025 By: /s/ Ying Huang
  Name: Ying Huang, Ph.D.
  Title: Chief Executive Officer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FAQ

What did LEGN announce on its Form 6-K about CARVYKTI?

FDA approved a label update adding overall survival data from CARTITUDE-4 showing a statistically significant OS improvement versus standard of care.

What survival data were added to the CARVYKTI label?

The OS analysis from CARTITUDE-4; at 33.6 months’ median follow-up, neither CARVYKTI nor standard of care reached median OS.

Which patient population does the OS update apply to for LEGN’s CARVYKTI?

Patients with relapsed, refractory multiple myeloma after one to three prior lines of therapy.

What new safety warnings were added to CARVYKTI’s label?

Immune effector cell–associated enterocolitis (IEC-EC) added to Boxed Warnings and Warnings and Precautions; JC virus reactivation leading to PML added to Warnings and Postmarketing.

How should IEC-EC be managed according to the updated label?

FDA recommends management per institutional guidelines and additional workup to exclude alternative etiologies, including T-cell lymphoma of the GI tract.

What does the label recommend for potential PML cases?

Perform appropriate diagnostic evaluations in patients with neurological adverse events.
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