Clinical Trials Search at Vanderbilt-Ingram Cancer Center

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 patients 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.

This trial tests the use of a disposable perfusion phantom (P4) to decrease errors in calculating the blood flow of a tissue with DCE-MRI. DCE-MRI is used calculate blood flow of various tissues including tumors. Blood flow often serves as a critical indicator showing a disease status. For example, a pancreatic tumor has typically low blood flow, so it can be used as an indicator to identify the presence of a pancreatic tumor. In addition, an effective therapy may result in the increase of blood flow in a pancreatic tumor during the early period of treatment. Therefore, DCE-MRI may be used to determine whether the undergoing therapy is effective or not by measuring the change of blood flow in the pancreatic tumor and may help doctors decide whether to continue the therapy or try a different one. Unfortunately, the measurement of blood flow using DCE-MRI is not accurate. The use of an artificial tissue, named "phantom" or P4, together with a patient may help to reduce errors in DCE-MRI because errors will affect the images of both the patient and the phantom. Because it is known how the blood flow of the phantom appears when no errors are present, the phantom may be used to detect what kinds of errors are present in the image, how many errors are present in the image, and how to remove errors from the image.