Volume 69, Issue 11 e29901
ONCOLOGY: RESEARCH ARTICLE

Nelarabine, etoposide, and cyclophosphamide in relapsed pediatric T-acute lymphoblastic leukemia and T-lymphoblastic lymphoma (study T2008-002 NECTAR)

James A. Whitlock

James A. Whitlock

Division of Haematology/Oncology, Department of Paediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada

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Jemily Malvar

Jemily Malvar

Division of Hematology, Oncology and Blood and Marrow Transplantation, Department of Pediatrics, Keck School of Medicine of the University of Southern California, Los Angeles, California, USA

The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, California, USA

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Luciano Dalla-Pozza

Luciano Dalla-Pozza

The Children's Hospital at Westmead, Westmead, New South Wales, Australia

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John M. Goldberg

John M. Goldberg

University of Miami Miller School of Medicine, Miami, Florida, USA

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Lewis B. Silverman

Lewis B. Silverman

Dana-Farber Cancer Institute/Boston Children's Hospital, Boston, Massachusetts, USA

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David S. Ziegler

David S. Ziegler

Kids Cancer Centre, Sydney Children's Hospital, Randwick, New South Wales, Australia

School of Women's and Children's Health, University of New South Wales, Sydney, Australia

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Andishe Attarbaschi

Andishe Attarbaschi

Department of Pediatric Hematology and Oncology, St. Anna Children's Hospital, Medical University of Vienna, Vienna, Austria

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Patrick A. Brown

Patrick A. Brown

Johns Hopkins University/Sidney Kimmel Cancer Center, Baltimore, Maryland, USA

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Rebecca A. Gardner

Rebecca A. Gardner

Seattle Children's Hospital, Seattle, Washington, USA

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Paul S. Gaynon

Paul S. Gaynon

Children's Center for Cancer and Blood Disease, Children's Hospital of Los Angeles, Los Angeles, California, USA

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Raymond Hutchinson

Raymond Hutchinson

Department of Pediatrics, Hematology and Oncology, C.S. Mott Children's Hospital, University of Michigan, Ann Arbor, Michigan, USA

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Van T. Huynh

Van T. Huynh

Children's Hospital Orange County, Orange, California, USA

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Sima Jeha

Sima Jeha

Department of Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee, USA

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Leigh Marcus

Leigh Marcus

Center for Drug Evaluation and Research, U.S. Food and Drug Administration, White Oak, Maryland, USA

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Yoav Messinger

Yoav Messinger

Children's Hospital and Clinics of Minnesota, Minneapolis, Minnesota, USA

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Kirk R. Schultz

Kirk R. Schultz

BC Children's Hospital and Research Institute, Vancouver, British Columbia, Canada

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Jeannette Cassar

Jeannette Cassar

Children's Oncology Group, Monrovia, California, USA

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Franco Locatelli

Franco Locatelli

Ospedale Bambino Gesù, University of Pavia, Rome, Italy

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C. Michel Zwaan

C. Michel Zwaan

Pediatric Oncology/Hematology, Erasmus University Medical Center-Sophia Children's Hospital, Rotterdam, Netherlands

Princess Máxima Center for Pediatric Oncology, Utrecht, Netherlands

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Brent L. Wood

Brent L. Wood

Seattle Cancer Care Alliance, Seattle, Washington, USA

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Richard Sposto

Richard Sposto

The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, California, USA

Division of Hematology, Oncology and Blood and Marrow Transplantation, Department of Pediatrics and Department of Preventive Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, California, USA

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Lia Gore

Corresponding Author

Lia Gore

Department of Pediatrics, University of Colorado School of Medicine/Children's Hospital Colorado, Aurora, Colorado, USA

Correspondence

Lia Gore, Section of Pediatric Hematology/Oncology/Bone Marrow Transplant-Cellular Therapeutics, Children's Hospital Colorado and the University of Colorado School of Medicine, 13123 East 16th Ave, Box B115, Aurora, CO 80045, USA.

Email: [email protected]

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First published: 21 August 2022
Citations: 3

Preliminary data from this trial were previously presented in abstract form at the 2014 Annual Meeting of the American Society of Hematology (https://doi.org/10.1182/blood.V124.21.795.795).

Abstract

Children with relapse of T-cell acute lymphoblastic leukemia (T-ALL) or lymphoblastic lymphoma (T-LBL) have a dismal prognosis, largely due to difficulty attaining second remission. We hypothesized that adding etoposide and cyclophosphamide to the nucleoside analog nelarabine could improve response rates over single-agent nelarabine for relapsed T-ALL and T-LBL. This phase I dose-escalation trial's primary objective was to evaluate the dose and safety of nelarabine given in combination with etoposide at 100 mg/m2/day and cyclophosphamide at 330–400 mg/m2/day, each for 5 consecutive days in children with either T-ALL (13 patients) or T-LBL (10 patients). Twenty-three patients were treated at three dose levels; 21 were evaluable for dose-limiting toxicities (DLT) and response. The recommended phase II doses (RP2D) for this regimen, when given daily ×5 every 3 weeks, were nelarabine 650 mg/m2/day, etoposide 100 mg/m2/day, and cyclophosphamide 400 mg/m2/day. DLTs included peripheral motor and sensory neuropathies. An expansion cohort to evaluate responses at the RP2D was terminated early due to slow accrual. The overall best response rate was 38% (8/21), with 33% (4/12) responses in the T-ALL cohort and 44% (4/9) responses in the T-LBL cohort. These response rates are comparable to those seen with single-agent nelarabine in this setting. These data suggest that the addition of cyclophosphamide and etoposide to nelarabine does not increase the incidence of neurologic toxicities or the response rate beyond that obtained with single-agent nelarabine in children with first relapse of T-ALL and T-LBL.

CONFLICT OF INTEREST

The authors declare that there is no conflict of interest.

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