PMID- 12900578 OWN - NLM STAT- MEDLINE DCOM- 20040121 LR - 20171101 IS - 1424-859X (Electronic) IS - 1424-8581 (Linking) VI - 99 IP - 1-4 DP - 2002 TI - Microphthalmia with linear skin defects syndrome (MLS): a male with a mosaic paracentric inversion of Xp. PG - 297-302 AB - The microphthalmia with linear skin defects syndrome (MLS) is an X-linked dominant disorder with male lethality. In the majority of the patients reported, the MLS syndrome is caused by segmental monosomy of the Xp22.3 region. To date, five male patients with MLS and 46,XX karyotype ("XX males") have been described. Here we report on the first male case with MLS and an XY complement. The patient showed agenesis of the corpus callosum, histiocytoid cardiomyopathy, and lactic acidosis but no microphthalmia, and carried a mosaic subtle inversion of the short arm of the X chromosome in 15% of his peripheral blood lymphocytes, 46,Y,inv(X)(p22.13 approximately 22.2p22.32 approximately 22.33)[49]/46,XY[271]. By fluorescence IN SITU hybridization (FISH), we showed that YAC 225H10 spans the breakpoint in Xp22.3. End-sequencing and database analysis revealed a YAC insert of at least 416 kb containing the genes HCCS and AMELX, and exons 2-16 of ARHGAP6. Molecular cytogenetic data suggest that the Xp22.3 inversion breakpoint is located in intron 1 of ARHGAP6, the gene encoding the Rho GTPase activating protein 6. Future molecular studies in karyotypically normal female MLS patients to detect submicroscopic rearrangements including the ARHGAP6 gene as well as mutation screening of ARHGAP6 in patients with no obvious chromosomal rearrangements will clarify the role of this gene in MLS syndrome. CI - Copyright 2002 S. Karger AG, Basel FAU - Kutsche, K AU - Kutsche K AD - Institut fur Humangenetik, Universitatsklinikum Hamburg-Eppendorf, Hamburg, Germany. kkutsche@uke.uni-hamburg.de FAU - Werner, W AU - Werner W FAU - Bartsch, O AU - Bartsch O FAU - von der Wense, A AU - von der Wense A FAU - Meinecke, P AU - Meinecke P FAU - Gal, A AU - Gal A LA - eng PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Switzerland TA - Cytogenet Genome Res JT - Cytogenetic and genome research JID - 101142708 RN - 0 (ARHGAP6 protein, human) RN - 0 (GTPase-Activating Proteins) SB - IM MH - *Chromosome Inversion MH - Chromosomes, Human, X/*genetics MH - Fatal Outcome MH - GTPase-Activating Proteins/genetics MH - Humans MH - In Situ Hybridization, Fluorescence MH - Infant MH - Karyotyping MH - Male MH - Microphthalmos/*genetics/pathology MH - Mosaicism MH - Sex Chromosome Aberrations MH - *Skin Abnormalities MH - Syndrome EDAT- 2003/08/06 05:00 MHDA- 2004/01/22 05:00 CRDT- 2003/08/06 05:00 PHST- 2002/10/30 00:00 [received] PHST- 2002/12/20 00:00 [accepted] PHST- 2003/08/06 05:00 [pubmed] PHST- 2004/01/22 05:00 [medline] PHST- 2003/08/06 05:00 [entrez] AID - 71607 [pii] AID - 10.1159/000071607 [doi] PST - ppublish SO - Cytogenet Genome Res. 2002;99(1-4):297-302. doi: 10.1159/000071607.