Patients
After obtaining approval of our institutional review board (IRB #:19KHCC34), we retrospectively reviewed all patients who presented with T-ALL to our department from January 2005 until April 2020. Patients’ records were identified by querying our departmental database. All patients with T-ALL presented to our institution and treated per modified St Jude Total VX protocol; we excluded patients who presented with relapsed disease, received previous therapy before referral and patients who underwent hematopoietic cell transplantation (HCT) in first remission.