A novel splice mutation in the TP53 gene associated with Leydig cell tumor and primitive neuroectodermal tumor

Key Points

• Malignancy development is associated with a novel splice mutation in the tp53 gene, highlighting its role in cancer predisposition.
• The affected individual developed precocious puberty due to a leydig cell tumor, and a primitive neuroectodermal tumor at age six.
• Assessment involved genetic testing, revealing the mutation in the proband, father, and sister but only malignancy in the boy.
• Implications for genetic counseling arise as the family shows potential Li-Fraumeni syndrome traits, despite not fully meeting the criteria.