Chromosome 15, Distal Trisomy 15q
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NORD is very grateful to Shashikant Kulkarni, PhD, Director of CytoGenomics and Molecular Pathology, Director of Clinical & Molecular Cytogenetics, Department of Pathology, Washington University School of Medicine, for assistance in the preparation of this report.
Synonyms of Chromosome 15, Distal Trisomy 15q
- Chromosome 15, Trisomy 15q2
- Distal Duplication 15q
- Partial Duplication 15q Syndrome
- No subdivisions found.
Chromosome 15, Distal Trisomy 15q is an extremely rare chromosomal disorder in which the end (distal) portion of the long arm (q) of the 15th chromosome (15q) appears three times (trisomy) rather than twice in cells of the body. The disorder is characterized by growth delays before and/or after birth (prenatal and/or postnatal growth retardation); mental retardation; and/or distinctive malformations of the head and facial (craniofacial) area. Additional abnormalities typically include an unusually short neck; malformations of the fingers and/or toes; abnormal sideways curvature of the spine (scoliosis) and/or other skeletal malformations; genital abnormalities, particularly in affected males; and/or, in some cases, heart (cardiac) defects. The range and severity of symptoms and physical findings may vary from case to case, depending upon the length and location of the duplicated portion of chromosome 15q. In most cases, Chromosome 15, Distal Trisomy 15q is due to a chromosomal balanced translocation in one of the parents.
Chromosome 15, Distal Trisomy 15q Resources
(Please note that some of these organizations may provide information concerning certain conditions potentially associated with this disorder [e.g., craniofacial malformations, congenital heart defects, seizures, mental retardation, etc.].)
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