Phenotype of 7q11.23 duplication: A family clinical series.
Duplication 7q11.23 syndrome is the reciprocal of Williams-Beuren deletion syndrome. Studies have reported a recognizable phenotype, including autism, intellectual disability, speech, and language delay, social anxiety, and behavioral difficulties in these individuals. Previous studies revealed a variety of craniofacial abnormalities, brain malformations, and cardiac abnormalities, including aortic dilation. This patient series evaluates five family members aged 2 months to 35 years, all with confirmed 7q11.23 duplication syndrome. All had characteristic craniofacial findings and joint hyperextensibility, and three experienced broken bones/fractures with minimal trauma. Other features included frequent headaches, sleep problems, hydrocephalus, and in two of the children, mildly dilated aortic root, and ascending aorta. Psychological test results reveal borderline to low average nonverbal cognitive abilities and speech and language delays. All five family members with 7q11.23 syndrome meet criteria for autism spectrum disorder. Adaptive functioning is impaired for all four children, but higher for the children's father. The infant shows developmental delays in language and motor skills, but some improvements in reciprocal social behaviors over time. Two children exhibit hyperactivity and inattention, and the father and second youngest child exhibit anxiety. This family clinical series contributes to the growing literature on the phenotype of 7q11.23 microduplication syndrome across the age range. Physicians are encouraged to urge focused medical surveillance and intensive early intervention targeting speech-language and social reciprocity. © 2016 Wiley Periodicals, Inc.
USC University Center for Excellence in Developmental Disabilities, Children's Hospital Los Angeles, Los Angeles, California.
Beth A
BA
Earhart
Department of Pediatrics, USC University Center for Excellence in Developmental Disabilities, University of Southern California Keck School of Medicine of USC, Children's Hospital Los Angeles, Los Angeles, California.
Marian E
ME
Williams
Department of Pediatrics, USC University Center for Excellence in Developmental Disabilities, University of Southern California Keck School of Medicine of USC, Children's Hospital Los Angeles, Los Angeles, California.
Irina
I
Zamora
Division of Medical Genetics, Department of Pediatrics, University of Southern California, Children's Hospital Los Angeles, Los Angeles, California.
Linda Marie
LM
Randolph
Division of Cardiology, Department of Pediatrics, University of Southern California, Children's Hospital Los Angeles, Los Angeles, California.
Jodie K
JK
Votava-Smith
Department of Pediatrics, USC University Center for Excellence in Developmental Disabilities, University of Southern California Keck School of Medicine of USC, Children's Hospital Los Angeles, Los Angeles, California.
Stephanie N
SN
Marcy
D059786:Abnormal Karyotype; D000293:Adolescent; D000328:Adult; D015415:Biomarkers; D002648:Child; D002675:Child, Preschool; D025063:Chromosome Disorders / Q000175:diagnosis* / Q000235:genetics*; D058674:Chromosome Duplication; D002897:Chromosomes, Human, Pair 7; D003952:Diagnostic Imaging; D004569:Electroencephalography; D005260:Female; D056726:Genetic Association Studies; D006801:Humans; D007223:Infant; D008297:Male; D010375:Pedigree; D010641:Phenotype; D055815:Young Adult
D015415:Biomarkers
7q11; autism spectrum disorder; children; speech language delay