Busulfan Sample Collection Study

Busulfan (Busulfex®) is an alkylating drug used as a conditioning regimen prior to allogeneic hematopoietic stem cell transplantation. Busulfan has wide inter- and intra-patient pharmacokinetic variability resulting in variable exposure leading to increased risk of toxicities or sub-optimal treatment outcomes. Therapeutic drug monitoring of busulfan using patient plasma samples would benefit clinicians by providing the ability to personalize the dose to achieve a target busulfan exposure.

Inclusion Criteria:Pediatric and adult female or male subjects;Current treatment with intravenous busulfan with documentation of diagnosed malignant hematologic or non-malignant disease condition requiring treatment;Adult participants must be capable of understanding and providing written informed consent, approved by an Institutional Review Board (IRB) prior to the initiation of any screening or study-specific procedures. Participants less than 18 years old must provide written assent with appropriate consent provided by legal guardian, who must be capable of understanding and providing informed consent, per Institutional Review Board (IRB) procedures, prior to the initiation of any screening or study-specific procedures.Exclusion Criteria:Unwilling or unable to follow protocol requirements or to give written informed consent;Patients receiving oral busulfan (e.g., Myleran®) treatment.