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OncoBayes Memajukan OB-001 untuk Menangani Rintangan ADC dan Penembusan TKI ke Otak

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News provided by

OncoBayes

07 Oct, 2026, 15:58 CST

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LONDON, 7 Oktober 2026 /PRNewswire/ -- OncoBayes, sebuah syarikat farmaseutikal peringkat klinikal milik persendirian, hari ini mengumumkan kejayaan menyelesaikan kajian praklinikal bagi OB-001, yang menunjukkan potensi produk tersebut untuk menangani dua keperluan utama yang masih belum dipenuhi dalam bidang onkologi: rintangan terhadap ADC dan penembusan perencat tirosina kinase (TKI) ke otak.

OB-001 ialah perencat yang sangat selektif dan berkesan terhadap dua pam efluks utama (P-gp dan BCRP), yang terdapat pada sawar darah-otak serta pada sel tumor. Produk ini sedang dibangunkan sebagai tablet oral sekali sehari, yang akan digunakan bersama beberapa rawatan onkologi standard emas bagi mengoptimumkan keberkesanannya.

Dalam kajian tikus dengan otak terperfusi, prarawatan menggunakan OB-001 meningkatkan pendedahan otak terhadap empat perencat kinase standard emas dengan ketara — manakala pendedahan sistemik (plasma) secara umumnya kekal tidak berubah. Data yang dibentangkan di AACR 2026 menunjukkan bahawa OB-001 boleh meningkatkan pendedahan otak terhadap osimertinib hampir 400% dengan perubahan sistemik yang minimum[1],[2]. Berdasarkan model translasi PK-PD-TGI bagi osimertinib, peningkatan ini diunjurkan memberikan lonjakan ketara dalam kelangsungan hidup bebas progresi sistem saraf pusat (CNS) bagi pesakit kanser paru-paru bukan sel kecil (NSCLC) EGFRm. Kawalan yang lebih baik terhadap metastasis otak masih merupakan keperluan utama yang belum dipenuhi dalam NSCLC dan kanser payudara.

Pam efluks yang sama turut dikenal pasti sebagai mekanisme rintangan utama yang menjejaskan ADC — dengan ekspresi berlebihan pam tersebut menyebabkan pengurangan kepekatan muatan dalam tumor. Kajian praklinikal menggunakan ujian pengangkut dua hala menunjukkan bahawa OB-001 mengurangkan efluks bagi beberapa muatan utama, termasuk SN-38 (contohnya sacituzumab govitecan, Trodelvy®), DM4 (contohnya mirvetuximab soravtansine, Elahere®) dan DXd (contohnya trastuzumab deruxtecan, Enhertu®).

Perancangan kini sedang dijalankan untuk beralih kepada program ujian klinikal secara selari bagi menjana data bukti konsep (POC) melalui kombinasi dengan osimertinib, serta menilai pemekaan semula terhadap T-DXd.

"Ini merupakan pencapaian penting bagi pasukan kami, dan kami kini berada pada kedudukan yang kukuh untuk memulakan rancangan klinikal kami bagi OB-001," kata Jim Millen, Ketua Pegawai Eksekutif OncoBayes. "OB-001 berada di landasan untuk menjadi ubat pertama dalam kelasnya dengan potensi luas sebagai terapi tambahan oral yang mudah digunakan bersama pelbagai terapi onkologi blockbuster. Ini benar-benar merupakan peluang satu produk dengan potensi seperti keseluruhan pipeline."

Rujukan:
1. AACR2026 Abstrak 5873. 1 April 2026; 86 (7_Tambahan): 5873. https://doi.org/10.1158/1538-7445.AM2026-5873.
2. Komunikasi Penyelidikan Kanser 1 Mei 2026; 6 (5): 1213–1219. https://doi.org/10.1158/2767-9764.CRC-25-0553.

BUTIRAN HUBUNGAN: 
Mark Brimble
[email protected]

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