{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,31]],"date-time":"2026-10-31T16:50:35Z","timestamp":1793465435083,"version":"4.5.0"},"reference-count":32,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2002,6,28]],"date-time":"2002-06-28T00:00:00Z","timestamp":1025222400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Am. J. Med. Genet."],"published-print":{"date-parts":[[2002,9,15]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The recent development of a set of chromosome\u2010specific, subtelomeric probes has proved useful in diagnosis and recurrence risk counseling of patients and families with mental retardation and in further characterization of known chromosomal abnormalities. Cases of cryptic, subtelomeric rearrangements may account for up to 7.5% of cases of idiopathic moderate\u2013severe mental retardation. We present the molecular cytogenetic studies of trisomy 14q detected by subtelomeric fluorescence in situ hybridization (FISH). Our patient is a 3\u2010year\u2010old girl with growth and developmental delay, myelomeningocele, partial agenesis of the corpus callosum, hypertelorism, tented mouth, simple ears, small mandible, and congenital heart disease (atrial and ventricular septal defects with subaortic conus). G\u2010banded chromosome analysis was apparently normal. A set of FISH\u2010based, subtelomeric, region\u2010specific probes revealed trisomy for 14q in the child. Parental FISH studies established that the mother is a balanced carrier for a half\u2010cryptic translocation between the distal long arm of chromosome 14 and the short arm of chromosome 22. FISH analysis using two BAC clones that contain the imprinted genes <jats:italic>MEG3<\/jats:italic> and <jats:italic>DLK1<\/jats:italic>, which localize to 14q32, established that our patient has two maternal copies of these genes. Because the child does not have features of the maternal UPD 14 syndrome, this case suggests that it is absence of expression of a paternally expressed gene, rather than overexpression of a maternally expressed gene, that is responsible for the maternal UPD 14 phenotype. \u00a9 2002 Wiley\u2010Liss, Inc.<\/jats:p>","DOI":"10.1002\/ajmg.10703","type":"journal-article","created":{"date-parts":[[2002,10,9]],"date-time":"2002-10-09T02:32:57Z","timestamp":1034130777000},"page":"23-27","source":"Crossref","is-referenced-by-count":19,"title":["Subtelomeric FISH uncovers trisomy 14q32: Lessons for imprinted regions, cryptic rearrangements and variant acrocentric short arms"],"prefix":"10.1002","volume":"112","author":[{"given":"V. 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