What is the prognosis of Li-Fraumeni syndrome?

Updated: Nov 13, 2018
  • Author: ; Chief Editor: Max J Coppes, MD, PhD, MBA  more...
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Children in families with Li-Fraumeni syndrome who survive an initial cancer have a relative risk of developing a second cancer that is 83 times greater than that of the general population. The risk for a second cancer increases with younger age at diagnosis of the first cancer.

A second cancer generally occurs 6-12 years after the first cancer. The cumulative probability of a person affected by Li-Fraumeni syndrome developing a second cancer is 57% at 30 years after developing the first cancer. [8]

The risk for a second cancer increases with radiation exposure. Patients with Li-Fraumeni syndrome have a predilection for developing subsequent primary tumors (especially sarcomas) in prior radiation fields.

A study by Teepen et al evaluated individual chemotherapeutic agents and solid cancer risk in childhood cancer survivors and reported that compared to other cancers, the doxorubicin-breast cancer dose response was stronger in survivors of Li-Fraumeni syndrome-associated childhood cancers. [38]

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