Two-year follow-up of KTE-X19 in patients with relapsed or refractory adult B-cell acute lymphoblastic leukemia in ZUMA-3 and its contextualization with SCHOLAR-3, an external historical control study

© 2022. The Author(s)..

BACKGROUND: Brexucabtagene autoleucel (KTE-X19) is an autologous anti-CD19 CAR T-cell therapy approved in the USA to treat adult patients with relapsed or refractory B-precursor acute lymphoblastic leukemia (R/R B-ALL) based on ZUMA-3 study results. We report updated ZUMA-3 outcomes with longer follow-up and an extended data set along with contextualization of outcomes to historical standard of care.

METHODS: Adults with R/R B-ALL received a single infusion of KTE-X19 (1 × 106 CAR T cells/kg). Long-term post hoc subgroup assessments of ZUMA-3 were conducted. Outcomes from matched patients between historical clinical trials and ZUMA-3 patients were assessed in the retrospective historical control study SCHOLAR-3.

RESULTS: After 26.8-months median follow-up, the overall complete remission (CR) rate (CR + CR with incomplete hematological recovery) among treated patients (N = 55) in phase 2 was 71% (56% CR rate); medians for duration of remission and overall survival (OS) were 14.6 and 25.4 months, respectively. Most patients responded to KTE-X19 regardless of age or baseline bone marrow blast percentage, but less so in patients with > 75% blasts. No new safety signals were observed. Similar outcomes were observed in a pooled analysis of phase 1 and 2 patients (N = 78). In SCHOLAR-3, the median OS for treated patients from ZUMA-3 (N = 49) and matched historical controls (N = 40) was 25.4 and 5.5 months, respectively.

CONCLUSIONS: These data, representing the longest follow-up of CAR T-cell therapy in a multicenter study of adult R/R B-ALL, suggest that KTE-X19 provides a clinically meaningful survival benefit with manageable toxicity in this population.

TRIAL REGISTRATION: NCT02614066.

Medienart:

E-Artikel

Erscheinungsjahr:

2022

Erschienen:

2022

Enthalten in:

Zur Gesamtaufnahme - volume:15

Enthalten in:

Journal of hematology & oncology - 15(2022), 1 vom: 10. Dez., Seite 170

Sprache:

Englisch

Beteiligte Personen:

Shah, Bijal D [VerfasserIn]
Ghobadi, Armin [VerfasserIn]
Oluwole, Olalekan O [VerfasserIn]
Logan, Aaron C [VerfasserIn]
Boissel, Nicolas [VerfasserIn]
Cassaday, Ryan D [VerfasserIn]
Leguay, Thibaut [VerfasserIn]
Bishop, Michael R [VerfasserIn]
Topp, Max S [VerfasserIn]
Tzachanis, Dimitrios [VerfasserIn]
O'Dwyer, Kristen M [VerfasserIn]
Arellano, Martha L [VerfasserIn]
Lin, Yi [VerfasserIn]
Baer, Maria R [VerfasserIn]
Schiller, Gary J [VerfasserIn]
Park, Jae H [VerfasserIn]
Subklewe, Marion [VerfasserIn]
Abedi, Mehrdad [VerfasserIn]
Minnema, Monique C [VerfasserIn]
Wierda, William G [VerfasserIn]
DeAngelo, Daniel J [VerfasserIn]
Stiff, Patrick [VerfasserIn]
Jeyakumar, Deepa [VerfasserIn]
Dong, Jinghui [VerfasserIn]
Adhikary, Sabina [VerfasserIn]
Zhou, Lang [VerfasserIn]
Schuberth, Petra C [VerfasserIn]
Faghmous, Imi [VerfasserIn]
Masouleh, Behzad Kharabi [VerfasserIn]
Houot, Roch [VerfasserIn]

Links:

Volltext

Themen:

Antigens, CD19
B-precursor acute lymphoblastic leukemia
Brexucabtagene autoleucel
CAR T-cell therapy
Journal Article
KTE-X19
Multicenter Study
Receptors, Chimeric Antigen
SCHOLAR-3
ZUMA-3

Anmerkungen:

Date Completed 16.12.2022

Date Revised 08.02.2023

published: Electronic

ClinicalTrials.gov: NCT02614066

Citation Status MEDLINE

doi:

10.1186/s13045-022-01379-0

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM350069514