Prospective and Retrospective Cohort Study of New Prognostic Factors With Peripheral Blood and Bone Marrow Evaluation at the Time of Diagnosis and During Treatment or Thereafter in Acute Leukemia (Acute Leukemia HSCT Cohort)

The objective of this study is to evaluate the prognostic factors of acute leukemia patients received stem cell transplantation and to invent the molecular genetic test for sensitive detection of minimal residual disease, and thereby this study would contribute to plan the risk adapted treatment. Patients will have samples of blood and/or bone marrow collected during treatment or thereafter

Inclusion Criteria:

• Patients diagnosed with acute leukemia who underwent allo-HSCT in Severance Hospital.
• Both genders of 16 Years and older
• sign a written informed consent document
• exemption of consent in patient who died in study period.

Exclusion Criteria:

• No comprehension or willingness to sign a written informed consent document.