title: Clinical and cytogenetic features of a patient with partial trisomy 8q and partial monosomy 13q delineated by array comparative genomic hybridization.
abstract: Partial trisomy 8q is rare and has distinctive clinical features, including severe mental retardation, growth impairment, dysmorphic facial appearances, cleft palate, congenital heart disease, and urogenital anomalies. Partial monosomy 13q is a rare genetic disorder displaying a variety of phenotypic characteristics including mental retardation, dysmorphic facial features, and congenital anomalies. Here, we describe for the first time clinical observations and cytogenetic analysis of a patient with a concomitant occurrence of partial trisomy of 8q (8q21.3→qter) and partial monosomy 13q(13q34→qter). The patient was a female neonate with facial dysmorphia, agenesis of the corpus callosum, cleft palate, and congenital heart disease. G-band standard karyotype was 46,XX,add(13)(q34). To determine the origin of additional genomic gain in chromosome 13, array comparative genomic hybridization (CGH) was performed. Array CGH showed a 56.8 Mb sized gain on chromosome 8q and a 0.28 Mb sized loss on chromosome 13q. Therefore, the final karyotype of the patient was defined as 46,XX, der(13)t(8;13)(q21.3;q34). In conclusion, we described the clinical and cytogenetic analysis of the patient with concomitant occurrence of partial trisomy 8q and partial monosomy 13q delineated by array CGH. This report suggests that the array CGH would be a valuable diagnostic tool for identifying the origin of small additional genetic materials.
authors.affiliation: Department of Medical Genetics, Ajou University School of Medicine, Suwon, 443-721, Korea.
authors.forename: Young Bae
authors.initials: YB
authors.lastname: Sohn
authors.forename: Jun No
authors.initials: JN
authors.lastname: Yun
authors.forename: Sang-Jin
authors.initials: SJ
authors.lastname: Park
authors.forename: Moon Sung
authors.initials: MS
authors.lastname: Park
authors.forename: Sung Hwan
authors.initials: SH
authors.lastname: Kim
authors.forename: Jang Hoon
authors.initials: JH
authors.lastname: Lee
mesh_terms: D000015:Abnormalities, Multiple; D002869:Chromosome Aberrations; D002871:Chromosome Banding; D002872:Chromosome Deletion; D025063:Chromosome Disorders / Q000235:genetics* / Q000473:pathology; D002882:Chromosomes, Human, Pair 13 / Q000235:genetics; D002898:Chromosomes, Human, Pair 8 / Q000235:genetics; D055028:Comparative Genomic Hybridization; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007621:Karyotyping; D014314:Trisomy / Q000235:genetics / Q000473:pathology*
keywords: Array CGH; partial monosomy 13q; partial trisomy 8q