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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Howard, Leslie A. Bacino, Carlos A. Heilstedt, Heidi A. Lewis, Richard A. Kashork, Catherine D. Ballif, Blake C. Shaffer, Lisa G. Stal, Samuel Shapira, Stuart K. |
| Description | Country affiliation: United States Author Affiliation: Heilstedt HA ( Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.) |
| Abstract | Monosomy 1p36 is the most common terminal deletion syndrome. This contiguous gene deletion syndrome is presumably caused by haploinsufficiency of a number of genes. We have constructed a contig of overlapping large-insert clones for the most distal 10.5 Mb of 1p36, evaluated the deletion sizes in 61 subjects with monosomy 1p36 from 60 families, and created a natural deletion panel. We found pure terminal deletions, interstitial deletions, derivative chromosomes, and more complex rearrangements. Breakpoints were 'binned' into 0.5-Mb regions. Analyses revealed some clustering of breakpoints but no single common breakpoint. Determination of the parental origin showed that 60% of de novo 1p36 terminal deletions arose from the maternally inherited chromosome. Of the 61 subjects, 30 were examined systematically through a protocol at the Texas Children's Hospital General Clinical Research Center. Specifically, we report hearing evaluations, palatal and ophthalmological examinations, echocardiograms, neurological assessments, and thyroid function tests. To our knowledge, this systematic molecular and clinical characterization of monosomy 1p36 is the largest and most comprehensive study of this deletion syndrome to date. Many cytogenetically visible, apparent terminal deletions are more complex than anticipated by cytogenetics, as revealed at the molecular level by our study. Our clinical findings allow for the more accurate recognition of the syndrome and for proper medical evaluation. |
| ISSN | 00029297 |
| e-ISSN | 15376605 |
| Journal | The American Journal of Human Genetics |
| Issue Number | 5 |
| Volume Number | 72 |
| Language | English |
| Publisher | Cell Press (on behalf of American Society of Human Genetics) |
| Publisher Date | 2003-05-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Abnormalities, Multiple Genetics Chromosome Breakage Chromosome Disorders Chromosomes, Human, Pair 1 Monosomy Diagnosis Adolescent Child, Preschool Facies Gene Deletion Infant Infant, Newborn Microsatellite Repeats Physical Chromosome Mapping Syndrome Research Support, Non-u.s. Gov't Research Support, U.s. Gov't, P.h.s. Discipline Human Genetics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Genetics (clinical) |
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