NCT04367246 - Li-Fraumeni Syndrome/TP53 Biobank
Li-Fraumeni Syndrome/TP53 Biobank
Abramson Cancer Center at Penn Medicine
Li-Fraumeni Syndrome (LFS) and Li-Fraumeni-like (LFL) Syndrome are cancer predisposition
syndromes due to germline aberrations in the TP53 gene. Patients with classical LFS have
a lifetime malignancy risk between 80-90%, with 21% of those cancers occurring by the age
of 15 years. There are established guidelines for screening patients with LFS that have
led to earlier detection and treatment of cancer in this population. There are a number
of important issues facing patients identified to have germline TP53 variations. First,
with the advent of massively parallel sequencing, increasing numbers of patients are now
being identified with a wide range of clinical phenotypes associated with germline TP53
mutations, and the natural history of these patients is less well understood. Second,
surveillance for malignancy in LFS and other TP53-associated syndromes involves frequent
laboratory and radiologic studies that are imperfect measures of disease onset;
therefore, more specific, less invasive biomarker-driven screening methods are needed.
Finally, studies to date have not yet identified whether tumors which form in LFS or
other germline TP53-associated tumors have unique aberrations or signatures that could be
exploited in precision medicine treatment of these patients. In order to study these
important issues in LFS, this protocol will establish a TP53 Clinical Database and
Biobank. The Investigator plans to use this biobank to study genotype-phenotype
correlations in patients with LFS and other germline TP53-associated syndromes,
mechanisms of tumor formation, and novel methods of cancer screening in this high risk
population.