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22q13 deletion syndrome, known as Phelan–McDermid syndrome (PMS), is a genetic disorder caused by deletions or rearrangements on the q terminal end (long arm) of chromosome 22. Any abnormal genetic variation in the q13 region that presents with significant manifestations ( phenotype ) typical of a terminal deletion may be diagnosed as 22q13 ...
NNZ-2591 is a synthetic analog of cyclic glycine-proline and experimental drug developed for Angelman syndrome, Phelan-McDermid syndrome, Pitt Hopkins syndrome, [1] [2] and Prader-Willi syndrome. [ 3 ]
GeneReviews is an online database containing standardized peer-reviewed articles that describe specific heritable diseases. It was established in 1997 as GeneClinics by Roberta A Pagon ( University of Washington ) with funding from the National Institutes of Health . [ 1 ]
1 D 1:7,500 1q21.1 deletion syndrome: 1q21.1 D 2q37 deletion syndrome: 2q37 D 5q deletion syndrome: 5q D 5,10-methenyltetrahydrofolate synthetase deficiency: MTHFS [2] 7p22.1 microduplication syndrome: 7p22.1 17q12 microdeletion syndrome: 17q12 [3] [4] 1:14,000-62,500 17q12 microduplication syndrome: 17q12 [5] 18p deletion syndrome: 18p D 1:50,000
The disruptions, either from mutations or deletions, are associated with disorders such as Phelan-McDermid syndrome (PMS), schizophrenia, and ASD. SHANK 3 is the most studied gene from the SHANK gene family. Several studies have found that disruptions to SHANK 3 cause more severe cognitive impairments than disruptions to SHANK 1 or 2.
[1] [3] [4] MECP2 duplication syndrome: Monogenic disorder: MECP2: X: 100% [in a single study composed by 9 male participants] Clinically defined: Brachycephaly, spasticity, recurrent respiratory infections, gastrointestinal hypermotility, genitourinary abnormalities, epilepsy, ID [1] [4] [7] Tuberous sclerosis complex: Monogenic disorder: TSC1 ...
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[1] An example of this is seen in the case of Williams syndrome, a neurodevelopmental disorder caused by the haploinsufficiency of genes at 7q11.23. The haploinsufficiency is caused by the copy-number variation (CNV) of 28 genes led by the deletion of ~1.6 Mb. These dosage-sensitive genes are vital for human language and constructive cognition.