PMID- 8086644 OWN - NLM STAT- MEDLINE DCOM- 19941014 LR - 20111117 IS - 0916-8478 (Print) IS - 0916-8478 (Linking) VI - 39 IP - 2 DP - 1994 Jun TI - Cytogenetic study of a severe case of Pallister-Killian syndrome using fluorescence in situ hybridization. PG - 259-67 AB - Usually, the supernumerary isochromosome 12p characterizing Pallister-Killian syndrome patients was detected in cultured skin fibroblasts but not in cultured blood lymphocytes. The proband of this study was a one-day-old female, who presented with major clinical characteristics of the Pallister-Killian syndrome, and had severe malformations in the form of anal atresia, cleft palate, and severe laryngomalacia. Chromosome preparations from cultured blood lymphocytes and skin fibroblasts, as well as buccal smears, from this patient were analyzed by fluorescence in situ hybridization (FISH) using a chromosome 12-specific alpha satellite probe. The proportions of cells showing positive signals for i(12p) in these samples were found to be 20, 62.5, and 70%, respectively. Repeated FISH studies of buccal smears from this patient showed considerable decreases in the proportions of i(12p) containing cells to 40% at one year of age and to 32% at the age of one year and five months. The decline in the percentage of i(12p)-containing cells in buccal smears with aging supports the concept of in vivo loss of the marker during repeated cell division. FAU - Gamal, S M AU - Gamal SM AD - Division of Clinical Genetics, Shizuoka Children's Hospital, Japan. FAU - Hasegawa, T AU - Hasegawa T FAU - Satoh, H AU - Satoh H FAU - Watanabe, T AU - Watanabe T FAU - Endo, K AU - Endo K FAU - Satoh, Y AU - Satoh Y LA - eng PT - Case Reports PT - Journal Article PT - Review PL - Japan TA - Jpn J Hum Genet JT - The Japanese journal of human genetics JID - 9213239 SB - IM MH - Abnormalities, Multiple/*genetics MH - Aging/genetics MH - Chromosome Aberrations/*genetics MH - Chromosome Disorders MH - *Chromosomes, Human, Pair 12 MH - Female MH - Humans MH - In Situ Hybridization, Fluorescence MH - Infant, Newborn MH - Intellectual Disability/genetics MH - *Mosaicism MH - Syndrome RF - 20 EDAT- 1994/06/01 00:00 MHDA- 1994/06/01 00:01 CRDT- 1994/06/01 00:00 PHST- 1994/06/01 00:00 [pubmed] PHST- 1994/06/01 00:01 [medline] PHST- 1994/06/01 00:00 [entrez] AID - 10.1007/BF01876847 [doi] PST - ppublish SO - Jpn J Hum Genet. 1994 Jun;39(2):259-67. doi: 10.1007/BF01876847.