Izalontamab Brengitecan (EGFRxHER3 ADC) Granted Breakthrough Therapy Designation by U.S. FDA for Patients with Previously Treated Advanced EGFR-Mutated Non-Small Cell Lung Cancer
Bristol Myers Squibb (NYSE: BMY) and SystImmune announced that their drug izalontamab brengitecan (iza-bren) has received Breakthrough Therapy Designation (BTD) from the FDA for treating advanced EGFR-mutated non-small cell lung cancer (NSCLC) in patients who progressed after EGFR TKI and platinum-based chemotherapy.
Iza-bren is a first-in-class bispecific antibody-drug conjugate (ADC) targeting both EGFR and HER3 receptors. The BTD was based on promising efficacy and safety data from three ongoing clinical trials: BL-B01D1-101, BL-B01D1-203 (in China), and the global BL-B01D1-LUNG-101 study.
This development addresses a significant unmet need, as NSCLC represents 80% of lung cancer cases, with 10-15% of Western and up to 50% of Asian patients having EGFR mutations. Current treatments typically show resistance after 18 months, highlighting the need for more effective therapies.
Bristol Myers Squibb (NYSE: BMY) e SystImmune hanno comunicato che il loro farmaco izalontamab brengitecan (iza-bren) ha ottenuto la Breakthrough Therapy Designation (BTD) dalla FDA per il trattamento del carcinoma polmonare non a piccole cellule (NSCLC) avanzato con mutazione EGFR in pazienti progrediti dopo EGFR TKI e chemioterapia a base di platino.
Iza-bren è un anticorpo coniugato bispecifico di prima classe (ADC) che mira contemporaneamente ai recettori EGFR e HER3. La BTD si basa su dati di efficacia e sicurezza promettenti provenienti da tre studi clinici in corso: BL-B01D1-101, BL-B01D1-203 (in Cina) e lo studio globale BL-B01D1-LUNG-101.
Questo progresso risponde a un importante bisogno insoddisfatto, dato che il NSCLC rappresenta l'80% dei casi di cancro al polmone, con il 10-15% dei pazienti nelle popolazioni occidentali e fino al 50% in quelle asiatiche portatori di mutazioni EGFR. I trattamenti attuali spesso mostrano resistenza dopo circa 18 mesi, sottolineando la necessità di terapie più efficaci.
Bristol Myers Squibb (NYSE: BMY) y SystImmune anunciaron que su fármaco izalontamab brengitecan (iza-bren) recibió la Breakthrough Therapy Designation (BTD) de la FDA para el tratamiento del cáncer de pulmón no microcÃtico (NSCLC) avanzado con mutación EGFR en pacientes que progresaron tras inhibidores de EGFR (EGFR TKI) y quimioterapia con platino.
Iza-bren es un anticuerpo conjugado con fármaco bispecÃfico de primera clase (ADC) que apunta a los receptores EGFR y HER3. La designación BTD se fundamenta en datos prometedores de eficacia y seguridad procedentes de tres ensayos clÃnicos en curso: BL-B01D1-101, BL-B01D1-203 (en China) y el estudio global BL-B01D1-LUNG-101.
Este avance aborda una necesidad clÃnica importante, ya que el NSCLC representa el 80% de los casos de cáncer de pulmón, con un 10-15% de pacientes en occidente y hasta un 50% en Asia portadores de mutaciones EGFR. Los tratamientos actuales suelen mostrar resistencia tras unos 18 meses, lo que evidencia la urgencia de opciones terapéuticas más efectivas.
Bristol Myers Squibb (NYSE: BMY)와 SystImmuneëŠ� 그들ì� 약물 izalontamab brengitecan (iza-bren)ì� FDA로부í„� EGFR ë³€ì� 비소세í¬íì•”(NSCLC) ì§„í–‰ 환ìž(ì´ì „ EGFR TKI ë°� 백금 기반 화학요법 í›�)ì—� 대í•� 치료ë¡� Breakthrough Therapy Designation(BTD)ì� íšë“했다ê³� ë°í˜”ë‹�.
Iza-brenì€ EGFRê³� HER3 수용체를 ë™ì‹œì—� 표ì 하는 í¼ìŠ¤íŠ¸ì¸í´ëž˜ìŠ� ì–‘ê°€ì„� í•ì²´-약물 ì ‘í•©ì²�(ADC)ë‹�. ì´ë²ˆ BTDëŠ� BL-B01D1-101, BL-B01D1-203(중êµ), ì „ì„¸ê³� BL-B01D1-LUNG-101 ë“� 3ê±´ì˜ ì§„í–‰ ì¤‘ì¸ ìž„ìƒì‹œí—˜ì—서 ì–»ì€ ìœ ë§í•� 효능 ë°� ì•ˆì „ì„� ë°ì´í„°ë¥¼ 근거ë¡� 한다.
ì� ê°œë°œì€ ì¤‘ìš”í•� 미충ì¡� 수요ë¥� 해결한다. NSCLCëŠ� íì•” 사례ì� 80%ë¥� 차지하며, 서구ì—서ëŠ� 10â€�15%, 아시아ì—서는 최대 50%ì� 환ìžê°€ EGFR ë³€ì´ë¥¼ ë³´ì¸ë‹�. 현행 ì¹˜ë£Œë²•ì€ ë³´í†µ ì•� 18개월 í›� ì €í•성ì� ë³´ì´ë¯€ë¡� ë� 효과ì ì¸ ì¹˜ë£Œë²•ì´ í•„ìš”í•˜ë‹¤.
Bristol Myers Squibb (NYSE: BMY) et SystImmune ont annoncé que leur médicament izalontamab brengitecan (iza-bren) a obtenu la Breakthrough Therapy Designation (BTD) de la FDA pour le traitement du cancer du poumon non à petites cellules (NSCLC) avancé à mutation EGFR chez des patients ayant progressé après un TKI EGFR et une chimiothérapie à base de platine.
Iza‑bren est un conjugué anticorps‑médicament bispécifique de première classe (ADC) ciblant à la fois les récepteurs EGFR et HER3. La BTD repose sur des données d’efficacité et de sécurité encourageantes issues de trois essais cliniques en cours : BL-B01D1-101, BL-B01D1-203 (en Chine) et l’étude globale BL-B01D1-LUNG-101.
Cette avancée répond à un besoin clinique majeur, car le NSCLC représente 80 % des cas de cancer du poumon, avec 10�15 % des patients en Occident et jusqu’� 50 % en Asie porteurs de mutations EGFR. Les traitements actuels développent généralement une résistance après environ 18 mois, soulignant la nécessité de thérapies plus efficaces.
Bristol Myers Squibb (NYSE: BMY) und SystImmune gaben bekannt, dass ihr Wirkstoff izalontamab brengitecan (iza-bren) von der FDA die Breakthrough Therapy Designation (BTD) für die Behandlung des fortgeschrittenen EGFR‑mutierten nicht‑kleinzelligen Lungenkarzinoms (NSCLC) bei Patienten erhalten hat, die nach EGFR‑TKI und platinbasierter Chemotherapie progredient sind.
Iza‑bren ist ein erstklassiger bispezifischer Antikörper‑Wirkstoffkonjugat (ADC), das sowohl EGFR- als auch HER3‑Rezeptoren adressiert. Die BTD stützt sich auf vielversprechende Wirksamkeits� und Sicherheitsdaten aus drei laufenden klinischen Studien: BL-B01D1-101, BL-B01D1-203 (in China) und der globalen BL-B01D1-LUNG-101-Studie.
Dieser Fortschritt deckt einen erheblichen ungedeckten Bedarf, denn NSCLC macht 80 % der Lungenkrebsfälle aus, wobei 10�15 % der westlichen und bis zu 50 % der asiatischen Patienten EGFR‑Mutationen aufweisen. Aktuelle Therapien zeigen in der Regel nach etwa 18 Monaten Resistenzen, was die Notwendigkeit wirksamerer Behandlungsoptionen unterstreicht.
- First Breakthrough Therapy Designation received for iza-bren, potentially expediting development and review
- Addresses large market opportunity with NSCLC representing 80% of lung cancer cases
- Demonstrates promising efficacy with manageable safety profile in clinical trials
- Novel dual-targeting mechanism potentially offering improved treatment option
- Drug still in clinical trial phase with no guaranteed approval
- Will face competition from existing EGFR TKIs and chemotherapy treatments
- Limited to specific patient population with EGFR mutations
Insights
BTD for iza-bren signals promising efficacy in treatment-resistant lung cancer, potentially accelerating a first-in-class therapy to market.
The FDA's Breakthrough Therapy Designation (BTD) for izalontamab brengitecan represents a significant regulatory milestone that could accelerate this novel bispecific antibody-drug conjugate to market. The designation was based on compelling data from three clinical trials showing efficacy in patients who progressed after both EGFR TKIs and platinum chemotherapy—a population with limited effective treatment options.
What makes iza-bren particularly notable is its dual-targeting mechanism against both EGFR and HER3 receptors coupled with a topoisomerase 1 inhibitor payload. This approach addresses a critical challenge in NSCLC treatment: while first-line EGFR TKIs like osimertinib show initial efficacy, resistance typically develops after approximately 18 months, leaving patients with few effective options.
The unmet need here is substantial—EGFR mutations occur in 10-15% of Western patients and up to 50% of Asian patients with NSCLC. Current post-TKI options offer limited efficacy with significant toxicity profiles. If approved, iza-bren would become the first bispecific ADC targeting these specific pathways in lung cancer.
The BTD will provide enhanced FDA interaction, potentially expedited review, and rolling submission opportunities. For Bristol Myers Squibb, this represents a valuable addition to their oncology portfolio, particularly in precision medicine for genetically-defined cancers. The collaboration with SystImmune demonstrates BMY's strategic commitment to expanding its pipeline through external innovation in targeted oncology therapeutics.
- First Breakthrough Therapy Designation in the
U.S. for SystImmune and Bristol Myers Squibb's Izalontamab brengitecan (Iza-bren) based on data from the BL-B01D1-101 (CN), BL-B01D1-203 (CN), and BL-B01D1-LUNG-101 (U.S. ,/EU) studies
Iza-bren is a potential first-in-class bispecific antibody-drug conjugate (ADC) which targets both epidermal growth factor receptor and human epidermal growth factor receptor 3 (EGFRxHER3) with a topoisomerase 1 inhibitor payload. Iza-bren is being developed by Biokin in
The granting of BTD underscores the strength of these data and highlights the potential of iza-bren to address the significant clinical unmet need patients face after EGFR TKI and platinum-based chemotherapy treatment. While EGFR TKIs have shown clinical efficacy in the frontline setting, most patients eventually see their cancer progress after about 18 months. Subsequent treatment options often contain platinum-based chemotherapy, which are of limited efficacy and come with significant toxicities. Breakthrough Therapy Designation from the US FDA is intended to expedite the development and review of drugs that may demonstrate significant benefit over current standards of care.
The FDA's decision was based on efficacy and safety data from three ongoing clinical trials: BL-B01D1-101 and BL-B01D1-203, conducted in
"The FDA's granting of Breakthrough Therapy Designation underscores the potential of iza-bren to meaningfully improve clinical outcomes for patients with previously treated epidermal growth factor receptor mutation NSCLC," said Dr. Jonathan Cheng, Chief Medical Officer of SystImmune. "The data we have generated to date suggest that iza-bren could address a critical unmet need in patient care, and we look forward to working closely with the FDA to conduct the relevant clinical studies and seek regulatory approval."
About EGFRmt NSCLC
Non-small cell lung cancer (NSCLC) accounts for approximately
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Bristol Myers Squibb is a global biopharmaceutical company whose mission is to discover, develop and deliver innovative medicines that help patients prevail over serious diseases. For more information about Bristol Myers Squibb, visit us at or follow us on , , , and .
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