- Pretreatment cytogenetics must be performed on all patients; collection of pretreatment specimens must be completed within 28 days prior to registration to S1318; specimens must be submitted to the site's preferred CLIA-approved cytogenetics laboratory; BCR-ABL status must be verified in Ph-positive patients by FISH, cytogenetics, and/or PCR prior to enrollment; if a patient is Ph-positive, PCR for both p190 and p210 must be sent