Pharmacogenomics Effects on High-Dose Methotrexate Clearance in Patients With Diffuse Large B-Cell Lymphoma

PRIMARY OBJECTIVES:

I. To identify SNPs associated with delayed MTX clearance. II. To explore any association between SNPs and increased toxicity.

OUTLINE: This is an observational study.

Participants undergo blood sample collection and have their medical records reviewed on study.

Inclusion criteria

• * Adult (age ≥ 18 years at diagnosis)

• Diagnosis of DLBCL or PCNSL
• Planned to undergo treatment with HDMTX (≥ 3 g/m^2) at the James Cancer Hospital.

Note: patients with CKD are eligible to participate regardless of eGFR provided the treating physician is planning a dose of HDMTX of at least 3 g/ m^2.

• Ability to provide informed consent.

Exclusion criteria

• * Patients with a "currently active" second malignancy that, in the opinion of the principal investigator, will interfere with patient participation, or confound data interpretation

• Pregnancy (positive serum or urine pregnancy test), lactating or breast feeding
• Prisoners or incarcerated patients
• Total bilirubin > 5 mg/dL