PMID- 12974736 OWN - NLM STAT- MEDLINE DCOM- 20040622 LR - 20190816 IS - 0009-9163 (Print) IS - 0009-9163 (Linking) VI - 64 IP - 4 DP - 2003 Oct TI - Population data suggest that deletions of 1p36 are a relatively common chromosome abnormality. PG - 310-6 AB - Monosomy 1p36 is a relatively common chromosome deletion. Deletion of this chromosome band can be difficult to visualize using routine cytogenetic banding techniques. The use of fluorescence in situ hybridization (FISH) with telomere region-specific probes has aided in the diagnosis of patients. In this study we ascertained 62 patients with deletions of 1p36 from 61 families and collected information regarding previous chromosome analyses, mode of ascertainment, clinical indication, age at diagnosis, and parental ages. The majority of deletions occur on the maternally derived chromosome. We identified terminal deletions, interstitial deletions, derivative chromosomes, and complex rearrangements. We correlated the type of rearrangement with the parental origins. Almost 50% of the patients had at least one chromosome analysis interpreted as normal. Retrospectively, 98% of deletions could be identified by routine chromosome analysis with careful attention to chromosome 1p36. Clinical indications were variable, with developmental delay/mental retardation being the most common. Increased maternal serum alpha fetoprotein (MSAFP) was detected in four of the five prenatally diagnosed cases. Maternal age at the time of birth of the affected child was significantly lower than the general United States population mean. We suggest a multistep approach for the diagnosis and clinical evaluation in cases of monosomy 1p36. FAU - Heilstedt, H A AU - Heilstedt HA AD - Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA. FAU - Ballif, B C AU - Ballif BC FAU - Howard, L A AU - Howard LA FAU - Kashork, C D AU - Kashork CD FAU - Shaffer, L G AU - Shaffer LG LA - eng GR - K08 DC00169/DC/NIDCD NIH HHS/United States GR - M01 RR00188/RR/NCRR NIH HHS/United States GR - P01 HD39420/HD/NICHD NIH HHS/United States GR - P30 HD24064/HD/NICHD NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - Denmark TA - Clin Genet JT - Clinical genetics JID - 0253664 RN - 0 (alpha-Fetoproteins) SB - IM MH - Abnormalities, Multiple/*genetics MH - Adolescent MH - Adult MH - *Chromosome Aberrations MH - *Chromosome Deletion MH - Chromosomes, Human, Pair 1/*genetics MH - Cytogenetic Analysis MH - Female MH - Genetic Testing/*methods MH - Humans MH - In Situ Hybridization, Fluorescence MH - Intellectual Disability/genetics MH - Male MH - Maternal Age MH - alpha-Fetoproteins EDAT- 2003/09/17 05:00 MHDA- 2004/06/24 05:00 CRDT- 2003/09/17 05:00 PHST- 2003/09/17 05:00 [pubmed] PHST- 2004/06/24 05:00 [medline] PHST- 2003/09/17 05:00 [entrez] AID - 126 [pii] AID - 10.1034/j.1399-0004.2003.00126.x [doi] PST - ppublish SO - Clin Genet. 2003 Oct;64(4):310-6. doi: 10.1034/j.1399-0004.2003.00126.x.