PMID- 11484209 OWN - NLM STAT- MEDLINE DCOM- 20010913 LR - 20190906 IS - 0148-7299 (Print) IS - 0148-7299 (Linking) VI - 102 IP - 3 DP - 2001 Aug 15 TI - Kabuki syndrome-like features associated with a small ring chromosome X and XIST gene expression. PG - 286-92 AB - Although clinical features in Kabuki syndrome (KS; Niikawa-Kuroki syndrome) have been well defined, the underlying genetic mechanism still remains unclear. We report a 9-year-old girl with typical KS-like facial appearance, skeletal and dermatoglyphic abnormalities, severe mental retardation, and growth deficiency. In 60 of 100 GTG-banded metaphases from peripheral blood lymphocytes, a ring chromosome smaller than a G group chromosome was found, which, according to reverse painting, consisted of Xq11.1q13. The proband's karyotype was described as mos45,X/46,X,+r(X). Several loci were analyzed with fluorescence in situ hybridization (FISH) and microsatellite markers revealing that one r(X) breakpoint mapped proximal to DXS422 (Xp11.21) and the second mapped distal to XIST gene, between loci DXS128E and DXS441 (Xq13.2). Uniparental disomy for X and r(X) was excluded and the paternal origin of r(X) was identified. XIST expression was demonstrated by nested reverse transcription polymerase chain reaction (RT-PCR) using primers spanning exons 5, 6i, and 6 in RNA prepared from lymphocytes. The observation of XIST expression is in contrast to two other cases in which the XIST gene was either not present on r(X) or not expressed. To our knowledge, this is the first case of Kabuki-like syndrome manifestations with r(X) and XIST expression. CI - Copyright 2001 Wiley-Liss, Inc. FAU - Stankiewicz, P AU - Stankiewicz P AD - Institute of Human Genetics and Medical Biology, University Halle-Wittenberg, Halle/S, Germany. pawels@bcm.tmc.edu FAU - Thiele, H AU - Thiele H FAU - Giannakudis, I AU - Giannakudis I FAU - Schlicker, M AU - Schlicker M FAU - Baldermann, C AU - Baldermann C FAU - Kruger, A AU - Kruger A FAU - Dorr, S AU - Dorr S FAU - Starke, H AU - Starke H FAU - Hansmann, I AU - Hansmann I LA - eng PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Am J Med Genet JT - American journal of medical genetics JID - 7708900 RN - 0 (RNA, Long Noncoding) RN - 0 (RNA, Untranslated) RN - 0 (Transcription Factors) RN - 0 (XIST non-coding RNA) SB - IM MH - Abnormalities, Multiple/*genetics/pathology MH - Child MH - Chromosome Banding MH - Craniofacial Abnormalities/*pathology MH - Cytogenetic Analysis MH - Female MH - Gene Expression MH - Growth Disorders/pathology MH - Humans MH - In Situ Hybridization, Fluorescence MH - Intellectual Disability/*pathology MH - Microsatellite Repeats MH - RNA, Long Noncoding MH - RNA, Untranslated/*genetics MH - *Ring Chromosomes MH - Syndrome MH - Transcription Factors/*genetics MH - X Chromosome/*genetics EDAT- 2001/08/03 10:00 MHDA- 2001/09/14 10:01 CRDT- 2001/08/03 10:00 PHST- 2001/08/03 10:00 [pubmed] PHST- 2001/09/14 10:01 [medline] PHST- 2001/08/03 10:00 [entrez] AID - 10.1002/ajmg.1462 [pii] AID - 10.1002/ajmg.1462 [doi] PST - ppublish SO - Am J Med Genet. 2001 Aug 15;102(3):286-92. doi: 10.1002/ajmg.1462.