Rubinstein-Taybi syndrome predisposing to non-WNT, non-SHH, group 3 medulloblastoma

Pediatr Blood Cancer. 2014 Feb;61(2):383-6. doi: 10.1002/pbc.24765. Epub 2013 Sep 20.

Abstract

Medulloblastomas (MB) are classified in four subgroups: the well defined WNT and Sonic Hedgehog (SHH) subgroups, and the less defined groups 3 and 4. They occasionally occur in the context of a cancer predisposition syndrome. While germline APC mutations predispose to WNT MB, germline mutations in SUFU, PTCH1, and TP53 predispose to SHH tumors. We report on a child with a Rubinstein-Taybi syndrome (RTS) due to a germline deletion in CREBBP, who developed a MB. Biological profilings demonstrate that this tumor belongs to the group 3. RTS may therefore be the first predisposition syndrome identified for non-WNT/non-SHH MB.

Keywords: CREBBP; Rubinstein-Taybi syndrome; medulloblastoma; predisposition.

Publication types

  • Case Reports

MeSH terms

  • CREB-Binding Protein / genetics*
  • Cerebellar Neoplasms / etiology*
  • Cerebellar Neoplasms / pathology
  • Comparative Genomic Hybridization
  • Genetic Predisposition to Disease*
  • Germ-Line Mutation / genetics*
  • Hedgehog Proteins / genetics
  • Humans
  • Infant
  • Male
  • Medulloblastoma / etiology*
  • Medulloblastoma / pathology
  • Prognosis
  • Rubinstein-Taybi Syndrome / complications*
  • Rubinstein-Taybi Syndrome / genetics
  • Rubinstein-Taybi Syndrome / pathology
  • Sequence Deletion
  • Wnt Proteins / genetics

Substances

  • Hedgehog Proteins
  • SHH protein, human
  • Wnt Proteins
  • CREB-Binding Protein
  • CREBBP protein, human