22q deletion syndrome

22q Foundation

Velo-Cardio-Facial Syndrome Educational Foundation

5p (Cri-du-chat syndrome)

International Cri Du Chat

Five P Minus Society

15q (Prader-Willi/Angelman Syndrome)

Prader-Willi Association USA

Angelman Syndrome Foundation

1p36 deletion syndrome

1p36 Deletion Support & Awarenes

4p (Wolf-Hirschhorn syndrome)

4p Support Group


8q (Langer-Giedion syndrome)

Unique: Rare Chromosome Disorder Support Group

11q (Jacobsen syndrome)

11q Research and Resource Support group

For more information about prenatal testing and prenatally diagnosed conditions, click below:

Screening Tests
Diagnostic Testing
Understanding Chromosome Conditions
Trisomy Conditions (Down syndrome, Trisomy 18, and Trisomy 13)
Sex Chromosome Conditions (Turner syndrome, Klinefelter syndrome)
Neural Tube Defects (Spina Bifida)
Microdeletions (Angelman/Prader-Willi, 22q, Wolf-Hirschhorn, Cri-du-Chat, Jacobsen, and Williams syndrome)