Spinal ependymoma in a patient with Kabuki syndrome: a case report.

TitleSpinal ependymoma in a patient with Kabuki syndrome: a case report.
Publication TypeJournal Article
Year of Publication2015
AuthorsRoma D, Palma P, Capolino R, Figà-Talamanca L, Diomedi-Camassei F, Lepri FR, Digilio MC, Marras CE, Messina R, Carai A, Randi F, Mastronuzzi A
JournalBMC Med Genet
Date Published2015
KeywordsAbnormalities, Multiple, Ependymoma, Face, Female, Hematologic Diseases, Humans, Magnetic Resonance Imaging, Spinal Cord Neoplasms, Vestibular Diseases, Young Adult

BACKGROUND: Kabuki syndrome is a rare disorder characterized by the association of mental retardation and postnatal growth deficiency with distinctive facial appearance, skeletal anomalies, cardiac and renal malformation. Two causative genes have been identified in patients with Kabuki syndrome. Mutation of KMT2D (MLL2) was identified in 55-80% of patients, while 9-14% of KMT2D negative patients have mutation in KDM6A gene. So far, few tumors have been reported in patients with Kabuki syndrome. We describe the first case of a patient with spinal ependymoma and Kabuki syndrome. CASE PRESENTATION: A 23 years old girl followed at our Center for KMT2D mutated Kabuki syndrome since she was 4 years old presented with acute lumbar pain and intermittent tactile hyposthenia of the feet. Spine magnetic resonance revealed a lumbar endocanalar mass. She underwent surgical resection of the lesion and histologic examination showed a tanycytic ependymoma (WHO grade II). CONCLUSION: Kabuki syndrome is not considered a cancer predisposition syndrome. Nonetheless, a number of tumors have been reported in patients with Kabuki syndrome. Spinal ependymoma is a rare disease in the pediatric and young adult population. Whereas NF2 mutations are frequently associated to ependymoma such an association has never been described in Kabuki syndrome. To our knowledge this is the first case of ependymoma in a KMT2D mutated Kabuki syndrome patient. Despite KMT2D role in cancer has previously been described, no genetic data are available for previously reported Kabuki syndrome patients with tumors. Nonetheless, the association of two rare diseases raises the suspicion for a common determinant.

Alternate JournalBMC Med. Genet.
Citation Key1657
PubMed ID26341229