BAC-FISH refutes report of an 8p22-8p23.1 inversion or duplication in 8 patients with Kabuki syndrome

BMC Med Genet. 2006 May 18;7:46. doi: 10.1186/1471-2350-7-46.

Abstract

Background: Kabuki syndrome is a multiple congenital anomaly/mental retardation syndrome. The syndrome is characterized by varying degrees of mental retardation, postnatal growth retardation, distinct facial characteristics resembling the Kabuki actor's make-up, cleft or high-arched palate, brachydactyly, scoliosis, and persistence of finger pads. The multiple organ involvement suggests that this is a contiguous gene syndrome but no chromosomal anomalies have been isolated as an etiology. Recent studies have focused on possible duplications in the 8p22-8p23.1 region but no consensus has been reached.

Methods: We used bacterial artificial chromosome-fluorescent in-situ hybridization (BAC-FISH) and G-band analysis to study eight patients with Kabuki syndrome.

Results: Metaphase analysis revealed no deletions or duplications with any of the BAC probes. Interphase studies of the Kabuki patients yielded no evidence of inversions when using three-color FISH across the region. These results agree with other research groups' findings but disagree with the findings of Milunsky and Huang.

Conclusion: It seems likely that Kabuki syndrome is not a contiguous gene syndrome of the 8p region studied.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Abnormalities, Multiple / genetics*
  • Chromosome Aberrations*
  • Chromosome Inversion
  • Chromosomes, Artificial, Bacterial
  • Chromosomes, Human, Pair 8*
  • Cytogenetic Analysis
  • Humans
  • In Situ Hybridization, Fluorescence
  • Intellectual Disability / genetics*
  • Metaphase
  • Syndrome