PMID- 16530711 OWN - NLM STAT- MEDLINE DCOM- 20090416 LR - 20060313 IS - 1769-7212 (Print) IS - 1769-7212 (Linking) VI - 49 IP - 2 DP - 2006 Mar-Apr TI - Isodicentric Y (p11.32) chromosome in an infant with mixed gonadal dysgenesis. PG - 141-9 AB - Among the structural abnormalities affecting the human Y chromosome, dicentric chromosomes are the most common. A wide spectrum of phenotypes of patients with a dicentric Y chromosome exists, ranging from almost males through mixed gonadal dysgenesis to females with Turner syndrome. Here, we describe an infant with mixed gonadal dysgenesis and mosaic karyotype 45,X/46,X,idic(Y)(qter-->p11.32:p11.32-->qter)/47,X,+2idic(Y) (qter-->p11.32:p11.32-->qter)/47,XYY. This was demonstrated by fluorescence in situ hybridization (FISH) analysis with whole Y chromosome painting (WCP-Y) probe. Molecular studies were performed on genomic DNA extracted from peripheral blood lymphocytes. To examine the sex determined region (SRY), azoospermia factor (AZF) region and deletion in azoospermia gene (DAZ), polymerase chain reaction (PCR) analyses were done with sequence-tagged site (STS) primers of 20 loci along the Y chromosome (SRY, DYS271, DYS148, DYS273, KALY, DYS212, SMCY, DYS215, DYS218, DYS219, DYS221, DYS223, DYS224, DYF51S1, DYS236, DAZ, DYS240), and all tested loci were found positive. Because of the possibility of a mutation in the SRY gene, we analyzed the PCR fragment by DNA sequencing and did not observe any mutation or nucleotide alteration. We present detailed molecular-cytogenetic characterization of a patient with idic(Y)(p11.32), and results are discussed with the previously described patients. As far as we know, this is the fifth report of a 46,X, idic(Y)(p11.32) karyotype and the first presentation with mixed gonadal dysgenesis and isodicentric Y. Since the correlation between phenotype and karyotype is not yet well defined, the clinical reports will be helpful in defining the phenotypic range of this chromosomal abnormality. FAU - Aktas, Dilek AU - Aktas D AD - Department of Genetics, Hacettepe University Medical School, Ankara, Turkey. FAU - Alikasifoglu, Mehmet AU - Alikasifoglu M FAU - Gonc, Nazli AU - Gonc N FAU - Senocak, Mehmet E AU - Senocak ME FAU - Tuncbilek, Ergul AU - Tuncbilek E LA - eng PT - Case Reports PT - Journal Article DEP - 20050701 PL - Netherlands TA - Eur J Med Genet JT - European journal of medical genetics JID - 101247089 RN - 0 (Genetic Markers) SB - IM MH - Cells, Cultured MH - *Chromosome Aberrations MH - Chromosome Mapping MH - Chromosomes, Human, Y/*genetics MH - Cytogenetic Analysis MH - Female MH - Genetic Markers MH - Gonadal Dysgenesis, Mixed/*genetics/pathology MH - Humans MH - In Situ Hybridization, Fluorescence MH - Infant MH - Male EDAT- 2006/03/15 09:00 MHDA- 2009/04/17 09:00 CRDT- 2006/03/15 09:00 PHST- 2005/04/19 00:00 [received] PHST- 2005/05/17 00:00 [accepted] PHST- 2006/03/15 09:00 [pubmed] PHST- 2009/04/17 09:00 [medline] PHST- 2006/03/15 09:00 [entrez] AID - S1769-7212(05)00113-8 [pii] AID - 10.1016/j.ejmg.2005.05.012 [doi] PST - ppublish SO - Eur J Med Genet. 2006 Mar-Apr;49(2):141-9. doi: 10.1016/j.ejmg.2005.05.012. Epub 2005 Jul 1.