Clinical and Molecular Description of a Wilms Tumor in a Patient With Tuberous Sclerosis Complex
2011
We report on a girl affected with tuberous sclerosis, carrying a germline de novo TSC2 mutation, c.4934-4935delTT, leading to a p.F1645CfsX7, who developed a unilateral Wilms tumor (WT). Molecular investigation of the tumor biopsy at diagnosis revealed the loss of the constitutional wild-type TSC2 allele, and loss of heterozygosity for the WT1 gene. Deletion of the WTX gene was also present, but it involved the functionally inactive X chromosome. No mutation affecting the remaining WT1 and WTX alleles, as well as the CTNNB1 gene was found. Pathological examination of the surgical specimen documented the presence of diffuse anaplasia and p53 immunoreactivity. To the best of our knowledge, this is the second report of a patient with tuberous sclerosis who developed a WT, and it represents the first case in which a detailed clinical and molecular description is provided. © 2011 Wiley-Liss, Inc.
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