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Childhood Acute Lymphoblastic Leukemia Treatment (PDQ®)

Patient Version

Risk Groups for Childhood Acute Lymphoblastic Leukemia

In childhood ALL, risk groups are used to plan treatment.

There are two risk groups in childhood ALL. They are described as:

  • Standard (low) risk: Includes children aged 1 to younger than 10 years who have a white blood cell count of less than 50,000/µL at diagnosis.
  • High risk: Includes children 10 years and older and/or children who have a white blood cell count of 50,000/µL or more at diagnosis.

Other factors that affect the risk group include the following:

It is important to know the risk group in order to plan treatment. Children with high-risk ALL usually receive more anticancer drugs and higher doses of anticancer drugs than children with standard-risk ALL.

  • Updated: April 13, 2015