Reference Detail

Ref Type

Journal Article

PMID

(37099340)

Authors

van der Sluis IM, de Lorenzo P, Kotecha RS, Attarbaschi A, Escherich G, Nysom K, Stary J, Ferster A, Brethon B, Locatelli F, Schrappe M, Scholte-van Houtem PE, Valsecchi MG, Pieters R

Title

Blinatumomab Added to Chemotherapy in Infant Lymphoblastic Leukemia.

Journal	Vol	Issue	Date	Pages	Journal Short Title
The New England journal of medicine	388	17	2023 Apr 27	1572-1581	N Engl J Med

URL

Abstract Text

KMT2A-rearranged acute lymphoblastic leukemia (ALL) in infants is an aggressive disease with 3-year event-free survival below 40%. Most relapses occur during treatment, with two thirds occurring within 1 year and 90% within 2 years after diagnosis. Outcomes have not improved in recent decades despite intensification of chemotherapy.We studied the safety and efficacy of blinatumomab, a bispecific T-cell engager molecule targeting CD19, in infants with KMT2A-rearranged ALL. Thirty patients younger than 1 year of age with newly diagnosed KMT2A-rearranged ALL were given the chemotherapy used in the Interfant-06 trial with the addition of one postinduction course of blinatumomab (15 μg per square meter of body-surface area per day; 28-day continuous infusion). The primary end point was clinically relevant toxic effects, defined as any toxic effect that was possibly or definitely attributable to blinatumomab and resulted in permanent discontinuation of blinatumomab or death. Minimal residual disease (MRD) was measured by polymerase chain reaction. Data on adverse events were collected. Outcome data were compared with historical control data from the Interfant-06 trial.The median follow-up was 26.3 months (range, 3.9 to 48.2). All 30 patients received the full course of blinatumomab. No toxic effects meeting the definition of the primary end point occurred. Ten serious adverse events were reported (fever [4 events], infection [4], hypertension [1], and vomiting [1]). The toxic-effects profile was consistent with that reported in older patients. A total of 28 patients (93%) either were MRD-negative (16 patients) or had low levels of MRD (<5×10-4 [i.e., <5 leukemic cells per 10,000 normal cells], 12 patients) after the blinatumomab infusion. All the patients who continued chemotherapy became MRD-negative during further treatment. Two-year disease-free survival was 81.6% in our study (95% confidence interval [CI], 60.8 to 92.0), as compared with 49.4% (95% CI, 42.5 to 56.0) in the Interfant-06 trial; the corresponding values for overall survival were 93.3% (95% CI, 75.9 to 98.3) and 65.8% (95% CI, 58.9 to 71.8).Blinatumomab added to Interfant-06 chemotherapy appeared to be safe and had a high level of efficacy in infants with newly diagnosed KMT2A-rearranged ALL as compared with historical controls from the Interfant-06 trial. (Funded by the Princess Máxima Center Foundation and others; EudraCT number, 2016-004674-17.).

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Molecular Profile	Treatment Approach

Gene Name	Source	Synonyms	Protein Domains	Gene Description	Gene Role

Therapy Name	Drugs	Efficacy Evidence	Clinical Trials

Drug Name	Trade Name	Synonyms	Drug Classes	Drug Description

Gene	Variant	Impact	Protein Effect	Variant Description	Associated with drug Resistance

Molecular Profile	Indication/Tumor Type	Response Type	Therapy Name	Approval Status	Evidence Type	Efficacy Evidence	References
KMT2A rearrange	childhood B-cell acute lymphoblastic leukemia	predicted - sensitive	Blinatumomab	Phase II	Actionable	In a Phase II trial, Blincyto (blinatumomab) treatment followed by a chemotherapy regimen with Cytoxan (cyclophosphamide), Cytosar-U (cytarabine), Mercaptopurine, MARMA, and OCTADAD demonstrated safety and resulted in minimal residual disease-negative or low in 93% (28/30) of infant patients with KMT2A-rearranged, B-precursor, acute lymphoblastic leukemia after infusion with Blincyto (blinatumomab), and a 2-year disease-free survival of 81.6% and an overall survival of 93.3% (PMID: 37099340).	37099340