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Biol Blood Marrow Transplant. 2016 Jul;22(7):1247-1256. doi: 10.1016/j.bbmt.2016.02.016. Epub 2016 Mar 8.

Safety, Pharmacokinetics, and Efficacy of Palifermin in Children and Adolescents with Acute Leukemias Undergoing Myeloablative Therapy and Allogeneic Hematopoietic Stem Cell Transplantation: A Pediatric Blood and Marrow Transplant Consortium Trial.

Author information

1
Department of Pediatrics, Loma Linda University Medical Center, Loma Linda, California.
2
Swedish Orphan Biovitrum (Sobi), Research & Development, Stockholm, Sweden. Electronic address: mattias.rudebeck@sobi.com.
3
Department of Hematology-oncology, Cancer Institute, Children's Hospital of Orange County, Orange, California.
4
Department of Pediatrics, Mattel Children's Hospital UCLA, Los Angeles, California.
5
Department of Stem Cell Transplantation, Children's Memorial Medical Center, Chicago, Illinois.
6
Department of Stem Cell Transplantation, Children's Hospital Los Angeles, Los Angeles, California.
7
Department of Pediatrics, Arizona Cancer Center, Tucson, Arizona.
8
Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, Texas.
9
Swedish Orphan Biovitrum (Sobi), Research & Development, Stockholm, Sweden.

Abstract

Currently, effective pharmacologic treatment to reduce severe oral mucositis (OM) resulting from high-dose myeloablative cytotoxic therapy in the pediatric population is not available. Palifermin has been proven to decrease the incidence and duration of severe OM in adults with hematologic malignancies undergoing hematopoietic stem cell transplantation (HSCT). In the pediatric population, however, data on palifermin treatment are limited. A phase I dose-escalation study of palifermin in pediatric patients with acute leukemias undergoing myeloablative HSCT with total body irradiation, etoposide, and cyclophosphamide was performed to determine a safe and tolerable dose and to characterize the pharmacokinetic (PK) profile and efficacy of palifermin. Twenty-seven patients in 3 age groups (1 to 2, 3 to 11, and 12 to 16 years) and 3 dose levels (40, 60, and 80 μg/kg/day) were studied. There were no deaths, dose-limiting toxicities, or treatment-related serious adverse events. Long-term safety outcomes did not differ from what would be expected in this population. PK data showed no differences between the 3 age groups. Exposure did not increase with increase in dose. The maximum severity of OM (WHO grade 4) occurred in 6 patients (22%), none of whom was in the 80-μg/kg/day dosing group. This study showed that all doses were well tolerated and a good safety profile in all 3 pediatric age groups was seen.

KEYWORDS:

Keratinocyte growth factor; Palifermin; Pediatric; Pharmacokinetics; Safety

PMID:
26968792
DOI:
10.1016/j.bbmt.2016.02.016
[Indexed for MEDLINE]
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