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US FDA pom zoo Tivdak, Thawj Tissue Factor (TF) Targeted Antibody Conjugate (ADC) Ntawm Nws Hom

[Oct 17, 2021]


Seattle Genetics Company (Seagen) thiab Genmab A/S tsis ntev los no tau tshaj tawm tias US Food and Drug Administration (FDA) tau nrawm qhov kev pom zoo ntawm cov tshuaj antibody-conjugated (ADC) Tivdak (tisotumab vedotin-tftv) rau kev kho mob thaum siv tshuaj khomob lossis cov neeg laus nrog mob qog noj ntshav los yog mob qog noj ntshav metastatic uas tau ua tiav tom qab siv tshuaj khomob. Qhov kev pom zoo nrawm nrawm no yog ua raws li cov ntaub ntawv tshem tawm cov qog thiab tshem tawm cov ntaub ntawv tsis tu ncua, thiab tom qab ntawd qhov kev pom zoo tag nrho rau qhov kev qhia no yuav yog nyob ntawm kev txheeb xyuas thiab kev piav qhia ntawm cov txiaj ntsig kho mob hauv cov kev sim tshuaj ntsuam xyuas.


Cov poj niam cov neeg mob uas rov muaj dua lossis mob qog noj ntshav hauv lub ncauj tsev menyuam uas tau ua tiav tom qab thawj kab kws khomob tau txwv txoj kev kho mob, thiab muaj qhov xav tau tseem ceeb rau kev xaiv kho tshiab. Tivdak yuav muab kev kho mob monotherapy tshiab rau cov neeg mob zoo li no.


Tivdak yog thawj-hauv-chav kawm (thawj-hauv-chav kawm) antibody-drug conjugate (ADC) targeting tissue factor (TF). TF tau qhia txog ntau yam qog nqaij hlav xws li mob qog noj ntshav hauv tsev menyuam. Cov kab mob ntawm lub cev muaj feem cuam tshuam nrog cov qog loj hlob, angiogenesis, metastasis thiab cov tsos mob tsis zoo. Mob qog noj ntshav thiab / lossis mob qog noj ntshav uas tau txais kev kho mob yav dhau los feem ntau qhia tau hais tias cov lus teb tsis tshua muaj rau cov qauv kev kho mob, feem ntau tsawg dua 15%, thiab qhov nruab nrab ntawm tag nrho cov ciaj sia taus (OS) tsuas yog 6.0-9.4 lub hlis.


Qhov kev pom zoo no yog los ntawm cov txiaj ntsig ntawm qhov tseem ceeb ntawm Phase II innovaTV 204 txoj kev tshawb fawb. Cov ntaub ntawv cuam tshuam tau tshaj tawm ntawm Lub Rooj Sib Tham Virtual ntawm European Society of Medical Oncology (ESMO) thaum lub Cuaj Hli 2020. Cov txiaj ntsig tau pom tias Tivdak ua ib qho kev kho mob monotherapy muaj txiaj ntsig zoo thiab tuaj yeem muab cov txiaj ntsig zoo thiab lub hom phiaj kho mob: tag nrho cov lus teb (ORR ) yog 24%, lub sijhawm nruab nrab ntawm cov lus teb (DOR) yog 8.3 lub hlis, thiab nws muaj kev nyab xeeb Controllable.


innovaTV 204 yog ib qho kev kawm txuas ntxiv ib sab caj npab, thoob ntiaj teb, ntau lub chaw kawm hauv 101 cov neeg mob uas muaj mob qog noj ntshav lossis mob qog noj ntshav metastatic uas yav dhau los tau txais kev kho mob dual (nrog lossis tsis muaj bevacizumab) Tab sis tus kab mob tau nce mus, lossis tau txais tsawg kawg 2 txoj kev kho mob. (xws li tsawg kawg ib qho kev kho mob uas muaj platinum) rau kev rov tshwm sim thiab / lossis kab mob metastatic. Txoj kev tshawb no tau soj ntsuam qhov ua tau zoo thiab kev nyab xeeb ntawm Tivdak (tswj ib zaug txhua 3 lub lis piam). Lub ntsiab lus kawg yog lub hom phiaj teb tus nqi (ORR) ntsuas los ntawm qhov dig muag qhov chaw saib xyuas ywj pheej (BICR). Cov ntsiab lus tseem ceeb thib ob suav nrog lub sijhawm teb (DOR), kev muaj sia nyob tsis muaj sia nyob (PFS), kev muaj sia nyob tag nrho (OS), kev nyab xeeb thiab Kev Ua Siab ntev.


Cov txiaj ntsig tau pom tias ORR ntawm Tivdak kev kho mob yog 24% (95% CI: 15.9-33.3%), nrog cov lus teb ua tiav (CR) ntawm 7% (7 tus neeg mob) thiab cov lus teb ib nrab (PR) ntawm 17% ( 17 cas). Qhov nruab nrab kev soj ntsuam yog 10 lub hlis lossis, qhov nruab nrab DOR yog 8.3 lub hlis (95% CI: 4.2-tsis ncav cuag). Lub sij hawm nruab nrab ntawm kev pib kho mob mus rau kev zam txim yog 1.4 lub hlis (ntau: 1.1-5.1), thiab kev kho cov lus teb feem ntau pom nyob rau hauv thawj 2 lub voj voog kho. Kev tshuaj xyuas pawg pawg pom tau hais tias tsis hais txog cov qog histology, tus naj npawb ntawm cov kev kho mob yav dhau los tau txais, cov lus teb rau cov txheej txheem yav dhau los, kev siv tshuaj kho ob zaug ua ke nrog bevacizumab raws li kev kho thawj kab, qhov kev tso tawm ntawm cov pab pawg feem ntau zoo ib yam.


Qhov nruab nrab PFS yog 4.2 lub hlis (95% CI: 3.0-4.4), thiab 6-lub hlis PFS tus nqi yog 30% (95% CI: 20.8-40.1). Qhov nruab nrab OS yog 12.1 hli (95% CI: 9.6-13.9), thiab 6-lub hlis OS tus nqi yog 79% (95% CI: 69.3-85.6). Hauv txoj kev tshawb no, feem ntau cov kev kho mob cuam tshuam nrog cov xwm txheej tsis zoo (≥20%) suav nrog cov plaub hau poob, ntshav ntswg, xeev siab, conjunctivitis, qaug zog, thiab qhov muag qhuav.


Cov txiaj ntsig saum toj no tau lees paub tias Tivdak ua rau muaj txiaj ntsig zoo thiab ruaj khov rau kev kho mob qog noj ntshav ntawm ncauj tsev menyuam cov neeg mob, thiab muaj kev nyab xeeb thiab tiv taus. Kev pom zoo ntawm Tivdak rau kev lag luam yog qhov kev nce qib loj rau cov poj niam cov neeg mob uas muaj mob qog noj ntshav lossis mob qog noj ntshav.