Clinical trial NCT05359237: Vincristine Pharmacokinetics in Infants
Official title: A Pharmacokinetic Study of VinCRIStine in Infants Dosed According to BSA-Banded Infant Dosing Tables and Older Children Dosed by Traditional BSA Methods
Study type: OBSERVATIONAL
Overall status: RECRUITING
Conditions: Hematopoietic and Lymphoid Cell Neoplasm
Malignant Solid Neoplasm
Lead sponsor: Children's Oncology Group
Sponsor class: NETWORK
Collaborators: name: National Cancer Institute (NCI)
First posted: 2022-05-03
Enrollment: 83
Sex: ALL
Maximum age (years): 12
Standard ages: CHILD
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: PROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Infants and young children receiving treatment regimen that includes vinCRIStine

Brief summary: This pilot trial compares drug exposure levels using a new method for dosing vincristine in infants and young children compared to the standard dosing method based on body surface area (BSA) in older children. Vincristine is an anticancer drug used to a variety of childhood cancers. The doses anticancer drugs in children must be adjusted based on the size of the child because children vary significantly in size (height, weight, and BSA) and ability to metabolize drugs from infancy to adolescence. The dose of most anticancer drugs is adjusted to BSA, which is calculated from a patient's weight and height. However, infants and young children have more severe side effects if the BSA is used to calculate their dose, so new dosing models have to be made to safely give anticancer drugs to the youngest patients. This new method uses a BSA-banded approach to determine the dose. Collecting blood samples before and after a dose of the drug will help researchers determine whether this new vincristine dosing method results in equivalent drug levels in the blood over time in infants and young children compared to older children.

Detailed description: PRIMARY OBJECTIVE:

I. To validate body surface area (BSA)-banded infant dosing tables by comparing vinCRIStine drug exposure, defined as the area under the concentration-time curve for the elimination phase (AUCelim), in infants and young children dosed according to the table to older children dosed according to BSA.

SECONDARY OBJECTIVE:

I. To estimate intra- and inter-age group variability (CV) using non-compartmental analysis (NCA) and population pharmacokinetic (PK) methods.

EXPLORATORY OBJECTIVES:

I. To correlate higher AUCelim with the presence of functionally impaired single nucleotide polymorphisms (SNP) of CYP3A4 and CYP3A5.

II. To assess vinCRIStine dose modifications in infants receiving weekly vinCRIStine dosed according to the BSA-banded infant dosing tables.

OUTLINE:

Patients receive vincristine intravenously (IV) per standard of care (SOC). Patients undergo collection of blood samples at baseline (before first vincristine dose), and 2, 6-8, and 18-24 hours after a dose of vincristine. Patients may also undergo collection of blood samples with a second SOC vincristine dose at the same time points.

Patients are followed for dose modifications for a period of 42 days (when receiving weekly dosing of vincristine).

Eligibility criteria: Inclusion Criteria:

* Patients must be =\< 12 years of age at the time of study enrollment. Patients will be stratified into 4 age groups:

  * 0 to 6 months
  * 6 months and 1 day to 12 months
  * 12 months and 1 day to 36 months
  * 36 months and 1 day to 12 years with a BSA ≥ 0.6 m\^2
* Newly diagnosed and relapsed cancer diagnosis that is being treated with vinCRIStine at the 1.5 mg/m\^2 dose level
* Any disease status
* Patients must have a Lansky performance status of 50 or higher
* Patients must be receiving a treatment regimen that includes 1.5 mg/m\^2 vinCRIStine (maximum dose 2 mg)
* Patients with a BSA \< 0.6 m\^2 must be dosed according to the Children's Oncology Group (COG) BSA-banded infant dosing table for the 1.5mg/m2 dose level for vinCRIStine

  * Note: Patients can be studied after any dose of vinCRIStine
* Patients who are NOT enrolled on a COG clinical trial and who have a BSA \< 0.6 m\^2 and who are being dosed according to another infant dosing method (e.g., the 30-Rule) can receive a dose of vinCRIStine from the infant dosing table for the pharmacokinetic study. These patients will NOT be part of the Dose Modification Assessment
* Patients with a seizure disorder may be enrolled if on allowable anticonvulsants and well controlled as evidenced by no increase in seizure frequency in the prior 7 days
* Nervous system toxicities (Common Terminology Criteria for Adverse Events \[CTCAE\]) version (v)5 resulting from prior therapy must be grade =\< 2
* Central venous access device in place (e.g., percutaneous indwelling central catheter \[PICC\], port, Broviac) or scheduled to be placed prior to the dose of vinCRIStine and that can be used for pharmacokinetic (PK) sampling
* VinCRIStine may be given as an outpatient, as long as all sample time points can be collected, which will require return for hour 24 sampling

Exclusion Criteria:

* Azoles antifungals and macrolide antibiotics: Patients who are currently receiving an azole or macrolide (e.g., fluconazole, isavuconazole, itraconazole, posaconazole, voriconazole, ketoconazole, eryromycin, clarithromycin, azithromycin, roxithromycin, or telithromycin) are not eligible
* CYP3A4/5 inducers/inhibitors: Patients receiving any medications or substances that are considered moderate or strong inhibitors or inducers of CYP3A4/5 are not eligible. Moderate or strong inducers or inhibitors of CYP3A4/5 should be avoided from 14 days prior to enrollment to the end of the study.

  * Note the following are allowed:

    * Dexamethasone for CNS tumors or metastases, on a stable dose
    * Aprepitant for management of nausea and vomiting
* Anticonvulsants: Patients receiving moderate or strong CYP3A4/5 enzyme inducing anticonvulsants are not eligible.
* Patients with Charcot-Marie-Tooth disease
* A baseline neurological disorder with manifestations that overlap with vinCRIStine-associated neurotoxicities
* Patients being treated on a Children Oncology Group (COG) clinical trial, that does not use the infant dosing tables for vinCRIStine are not eligible for this study.
* Patients receiving a modified dose (\< 1.5 mg/m\^2) of vinCRIStine due to prior toxicity
* Patients who in the opinion of the investigator may not be able to comply with the sampling requirements of the study

Primary outcomes:
measure: Area under the concentration time curve for the elimination phase (AUCelim) by age group
timeFrame: Up to 24 hours post vincristine dose
Secondary outcomes:
measure: Intra- and inter-age coefficient of variation (CV)
timeFrame: Up to 42 days
Other outcomes:
measure: Correlation of AUC for the elimination phase with CYP3A4 and CYP3A5 single nucleotide polymorphisms (SNPs)
timeFrame: Up to 24 hours
measure: Number of patients requiring vincristine dose modifications
timeFrame: Up to 42 days
Locations:
city: Birmingham
country: United States
facility: Children's Hospital of Alabama
state: Alabama
city: Los Angeles
country: United States
facility: Children's Hospital Los Angeles
state: California
city: Orange
country: United States
facility: Children's Hospital of Orange County
state: California
city: San Francisco
country: United States
facility: UCSF Medical Center-Mission Bay
state: California
city: Aurora
country: United States
facility: Children's Hospital Colorado
state: Colorado
city: Washington
country: United States
facility: Children's National Medical Center
state: District of Columbia
city: Chicago
country: United States
facility: Lurie Children's Hospital-Chicago
state: Illinois
city: Chicago
country: United States
facility: University of Chicago Comprehensive Cancer Center
state: Illinois
city: Indianapolis
country: United States
facility: Riley Hospital for Children
state: Indiana
city: Baltimore
country: United States
facility: Johns Hopkins University/Sidney Kimmel Cancer Center
state: Maryland
city: Boston
country: United States
facility: Dana-Farber Cancer Institute
state: Massachusetts
city: Ann Arbor
country: United States
facility: C S Mott Children's Hospital
state: Michigan
city: Minneapolis
country: United States
facility: University of Minnesota/Masonic Cancer Center
state: Minnesota
city: Saint Louis
country: United States
facility: Washington University School of Medicine
state: Missouri
city: New York
country: United States
facility: NYP/Columbia University Medical Center/Herbert Irving Comprehensive Cancer Center
state: New York
city: Valhalla
country: United States
facility: New York Medical College
state: New York
city: Durham
country: United States
facility: Duke University Medical Center
state: North Carolina
city: Cincinnati
country: United States
facility: Cincinnati Children's Hospital Medical Center
state: Ohio
city: Columbus
country: United States
facility: Nationwide Children's Hospital
state: Ohio
city: Philadelphia
country: United States
facility: Children's Hospital of Philadelphia
state: Pennsylvania
city: Pittsburgh
country: United States
facility: Children's Hospital of Pittsburgh of UPMC
state: Pennsylvania
city: Memphis
country: United States
facility: Saint Jude Children's Research Hospital
state: Tennessee
city: Nashville
country: United States
facility: Vanderbilt University/Ingram Cancer Center
state: Tennessee
city: Dallas
country: United States
facility: UT Southwestern/Simmons Cancer Center-Dallas
state: Texas
city: Fort Worth
country: United States
facility: Cook Children's Medical Center
state: Texas
city: Houston
country: United States
facility: Baylor College of Medicine/Dan L Duncan Comprehensive Cancer Center
state: Texas
city: Seattle
country: United States
facility: Seattle Children's Hospital
state: Washington
city: South Brisbane
country: Australia
facility: Queensland Children's Hospital
state: Queensland
city: Montreal
country: Canada
facility: Centre Hospitalier Universitaire Sainte-Justine
state: Quebec
Study officials:
affiliation: Pediatric Early Phase Clinical Trial Network
name: Emily Blauel
role: PRINCIPAL_INVESTIGATOR
References: