PMID- 17561477 OWN - NLM STAT- MEDLINE DCOM- 20070731 LR - 20161013 IS - 0929-6646 (Print) IS - 0929-6646 (Linking) VI - 106 IP - 5 DP - 2007 May TI - Delineation of an isodicentric Y chromosome in a mosaic 45,X/46,X,idic(Y)(qter-p11.3::p11.3-qter) fetus by SRY sequencing, G-banding, FISH, SKY and study of distribution in different tissues. PG - 403-10 AB - Many factors such as genetic, developmental and hormonal are involved in mammalian sex determination. The relative importance and the mutual interactions among those factors are obscure. Study of cytogenetic mosaicism involving sex chromosomes may help to further unravel the mysterious process. We report a fetus with a mosaic karyotype, 45,X/46,X,idic(Y)(qter-p11.3::p11.3-qter), with unambiguous male external genitalia and a defect in the interventricular septum of the heart. Genotype of this fetus was extensively studied by technologies including sequencing of SRY (sex-determining region on the Y chromosome) gene, G-banding, FISH (fluorescence in situ hybridization) and SKY (spectral karyotyping). A markedly higher percentage of Y-containing cells was observed in the gonads (55%) than in the amniotic fluid (17%) and placental villi (11%), which was considered to be the major reason why the fetus did not have ambiguous genitalia. FAU - Wu, Hsuan-Hsuan AU - Wu HH AD - Center for Health Promotion and Department of Family Medicine, Changhua Christian Hospital, Changhua, and Department of Obstetrics and Gynecology, College of Medicine, Taipei, Taiwan. FAU - Lee, Tsung-Hsien AU - Lee TH FAU - Chen, Chin-Der AU - Chen CD FAU - Yeh, Kun-Tu AU - Yeh KT FAU - Chen, Ming AU - Chen M LA - eng PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Singapore TA - J Formos Med Assoc JT - Journal of the Formosan Medical Association = Taiwan yi zhi JID - 9214933 RN - 0 (Sex-Determining Region Y Protein) SB - IM MH - Adult MH - Amniocentesis MH - Amniotic Fluid/cytology MH - Chorionic Villi MH - Chromosome Banding MH - Chromosomes, Human, X/*genetics MH - Chromosomes, Human, Y/*genetics MH - Female MH - Fetus MH - Genes, sry MH - Gonads/cytology MH - Heart Septal Defects, Ventricular/genetics MH - Humans MH - In Situ Hybridization, Fluorescence MH - *Isochromosomes MH - Male MH - *Mosaicism MH - Pregnancy MH - Sex-Determining Region Y Protein/*genetics MH - Spectral Karyotyping EDAT- 2007/06/15 09:00 MHDA- 2007/08/01 09:00 CRDT- 2007/06/15 09:00 PHST- 2007/06/15 09:00 [pubmed] PHST- 2007/08/01 09:00 [medline] PHST- 2007/06/15 09:00 [entrez] AID - S0929-6646(09)60327-2 [pii] AID - 10.1016/S0929-6646(09)60327-2 [doi] PST - ppublish SO - J Formos Med Assoc. 2007 May;106(5):403-10. doi: 10.1016/S0929-6646(09)60327-2.