Interstitial deletion of chromosome 7q in a patient with Williams syndrome and infantile spasms.
J Hum Genet
; 43(3): 178-81, 1998.
Article
in En
| MEDLINE
| ID: mdl-9747030
ABSTRACT
Interstitial deletion of 7q11.23-q21.11 was identified by cytogenetic methods in a 4-year-old boy with Williams syndrome (WS) and infantile spasms. Deletion of the elastin (ELN) gene and the DNA polymorphic markers, D7S1870, D7S2490, D7S2518, and D7S2421, were identified in the patient, but the loci for D7S653 and D7S675 were not involved. Zackowski et al. (1990) reported that 6 of 16 patients with the interstitial deletion of 7q11.2-q22 had abnormal electro encephalograms, or seizures, or both, and that infantile spasms were present in 2 of the 6 patients. WS is a well defined developmental disorder characterized by distinct facial features, gregarious personality, and congenital heart defects. Seizures are not generally associated with this syndrome. WS commonly is characterized by deletion of the loci for ELN and D7S1870, but not those for D7S2490, D7S2518, or D7S2421. This suggests that a gene responsible for infantile spasms is located in the 2.7-cM interval between loci D7S1870 and D7S675.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Spasms, Infantile
/
Chromosomes, Human, Pair 7
/
Sequence Deletion
/
Williams Syndrome
Type of study:
Prognostic_studies
Limits:
Child, preschool
/
Female
/
Humans
/
Male
Language:
En
Journal:
J Hum Genet
Journal subject:
GENETICA MEDICA
Year:
1998
Document type:
Article
Affiliation country:
Japan