TY - JOUR
T1 - Blinatumomab is associated with favorable outcomes in patients with B-cell lineage acute lymphoblastic leukemia and positive measurable residual disease at a threshold of 10−4 and higher
AU - Jabbour, Elias J.
AU - Short, Nicholas J.
AU - Jain, Nitin
AU - Jammal, Nadya
AU - Jorgensen, Jeffrey
AU - Wang, Sa
AU - Wang, Xuemei
AU - Ohanian, Maro
AU - Alvarado, Yesid
AU - Kadia, Tapan
AU - Sasaki, Koji
AU - Garris, Rebecca
AU - Garcia-Manero, Guillermo
AU - Ravandi, Farhad
AU - Kantarjian, Hagop M.
N1 - Publisher Copyright:
© 2022 Wiley Periodicals LLC.
PY - 2022/9
Y1 - 2022/9
N2 - The presence of measurable residual disease (MRD) is the strongest predictor of relapse in acute lymphoblastic leukemia (ALL). We conducted a prospective, single-arm, phase II study in adults with B-cell ALL with MRD ≥1 × 10−4 after ≥3 months from the start of frontline therapy or one month from any salvage therapy. Blinatumomab was administered at a standard dosing of 28 micrograms daily as a continuous infusion for up to five cycles and up to four additional maintenance cycles. Thirty-seven patients with a median age of 43 years (range, 22–84 years) were treated. Twenty-seven patients (73%) were treated in first complete remission (CR) and 10 patients (27%) in second CR and beyond. Eighteen patients (49%) had Philadelphia-chromosome positive ALL and received concomitant tyrosine kinase inhibitor therapy. Twenty-three patients (62%) had a baseline MRD ≥10−3. A median of three cycles (range, 1–9 cycles) were administered. Overall, 27 patients (73%) achieved MRD-negative remission. With a median follow-up of 31 months (range, 5–70 months), the estimated 3-year relapse-free survival (RFS) rate was 63% (95% confidence interval [CI], 43%–77%) and overall survival (OS) rate 67% (95% CI, 46%–81%). These rates were 51% (95% CI, 27%–70%) and 61% (95% CI, 36%–78%) in patients with baseline MRD ≥1 × 10−3, and 83% (95% CI, 45%–95%) and 77% (95% CI, 32%–95%) in patients with baseline MRD <10−3 respectively. The rates of adverse events were consistent with previous studies of blinatumomab. In summary, blinatumomab induced MRD negativity in most patients and resulted in high rates of RFS and OS. This study is registered at www.clinicaltrials.gov as #NCT02458014. Funding was provided by Amgen Inc.
AB - The presence of measurable residual disease (MRD) is the strongest predictor of relapse in acute lymphoblastic leukemia (ALL). We conducted a prospective, single-arm, phase II study in adults with B-cell ALL with MRD ≥1 × 10−4 after ≥3 months from the start of frontline therapy or one month from any salvage therapy. Blinatumomab was administered at a standard dosing of 28 micrograms daily as a continuous infusion for up to five cycles and up to four additional maintenance cycles. Thirty-seven patients with a median age of 43 years (range, 22–84 years) were treated. Twenty-seven patients (73%) were treated in first complete remission (CR) and 10 patients (27%) in second CR and beyond. Eighteen patients (49%) had Philadelphia-chromosome positive ALL and received concomitant tyrosine kinase inhibitor therapy. Twenty-three patients (62%) had a baseline MRD ≥10−3. A median of three cycles (range, 1–9 cycles) were administered. Overall, 27 patients (73%) achieved MRD-negative remission. With a median follow-up of 31 months (range, 5–70 months), the estimated 3-year relapse-free survival (RFS) rate was 63% (95% confidence interval [CI], 43%–77%) and overall survival (OS) rate 67% (95% CI, 46%–81%). These rates were 51% (95% CI, 27%–70%) and 61% (95% CI, 36%–78%) in patients with baseline MRD ≥1 × 10−3, and 83% (95% CI, 45%–95%) and 77% (95% CI, 32%–95%) in patients with baseline MRD <10−3 respectively. The rates of adverse events were consistent with previous studies of blinatumomab. In summary, blinatumomab induced MRD negativity in most patients and resulted in high rates of RFS and OS. This study is registered at www.clinicaltrials.gov as #NCT02458014. Funding was provided by Amgen Inc.
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U2 - 10.1002/ajh.26634
DO - 10.1002/ajh.26634
M3 - Article
C2 - 35713551
AN - SCOPUS:85132555912
SN - 0361-8609
VL - 97
SP - 1135
EP - 1141
JO - American journal of hematology
JF - American journal of hematology
IS - 9
ER -