Chromosome 22 Central http://www.nt.net/~a815/chr22.htm
Support group for families who have children with any chromosome 22 disorder, including trisomies, cat eye syndrome, translocations, deletions 22q11, 22q13, VCFS, Digeorge syndrome, rings and unique malformations.
Cornelia de Lange Syndrome (CdLS) Foundation Outreach http://www.cdlsusa.org
Family support organization which exists to ensure the early and accurate diagnosis of CdLS, promote research into the causes and manifestations of the syndrome, and help people with a diagnosis of CdLS, and others with similar characteristics, make informed decisions throughout their lifetime.
Ideas http://IDIC15.ORG
A support group for families and professionals interested in the chromosomal condition known as isodicentric 15 (formerly inverted duplication 15).