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Dup15q syndrome is the common name for maternally inherited chromosome 15q11.2-q13.1 duplication syndrome. This is a genomic copy number variant that leads to a type of neurodevelopmental disorder , caused by partial duplication of the proximal long arm of Chromosome 15 .
7q11.23 duplication syndrome (also called dup7 or 7dup or duplication of the Williams-Beuren syndrome critical region) is a rare genetic syndrome caused by micro-duplication of 1.5-1.8 mega base in section q11.23 of chromosome 7. This syndrome is characterized by a wide spectrum of neurological, behavior and other medical problems which may ...
The cause of M2DS is a duplication of the MECP2 or Methyl CpG binding protein 2 gene located on the X chromosome (Xq28). [5] The MeCP2 protein plays a pivotal role in regulating brain function. Increased levels of MECP2 protein results in abnormal neural function and impaired immune system. [ 4 ]
Chromosome 15q duplication is an extremely rare genetic disorder in which there is an excess copy of a segment of DNA found on the long ("q") arm of human chromosome 15.As a result, affected cells contain a total of 3 copies of the duplicated bases, instead of the usual 2 copies - one inherited from the mother and one from the father - found in a normal human diploid genome.
8p23.1 duplication syndrome is a rare genetic disorder caused by a duplication of a region from human chromosome 8. [1] This duplication syndrome has an estimated prevalence of 1 in 64,000 births [ 1 ] and is the reciprocal of the 8p23.1 deletion syndrome .
1q21.1 duplication syndrome arises from microduplications of the BP3-BP4 region, containing at least seven genes and a minimum duplicated region of ~1.2 Mb of unique DNA sequence. [7] 1q21.1 duplication syndrome has an autosomal dominant inheritance pattern, where 18–50% of deletions happen de novo and 50–82% are inherited from their ...
Isodicentric 15, also called marker chromosome 15 syndrome, [2] idic(15), partial tetrasomy 15q, or inverted duplication 15 (inv dup 15), is a chromosome abnormality in which a child is born with extra genetic material from chromosome 15. People with idic(15) are typically born with 47 chromosomes in their body cells, instead of the normal 46.
When the chromosome's structure is altered, this can take several forms: [16] Deletions: A portion of the chromosome is missing or has been deleted. Known disorders in humans include Wolf–Hirschhorn syndrome, which is caused by partial deletion of the short arm of chromosome 4; and Jacobsen syndrome, also called the terminal 11q deletion ...