Prenatal testing is usually performed around 15–18 weeks, using amniocentesis to extract DNA from the fetus's cells.
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Linkage analysis and chromosomal rearrangement revealed the cause of SCS to be mutations in the TWIST gene (twist transcription factor gene) located on chromosome 7p21.
Down syndrome | Tourette syndrome | Asperger syndrome | Marfan syndrome | Down Syndrome | Turner syndrome | Down's syndrome | Asperger's syndrome | Williams syndrome | Stockholm syndrome | Severe acute respiratory syndrome | Rett syndrome | Irukandji syndrome | Chronic fatigue syndrome | Wiskott–Aldrich syndrome protein | Tourette Syndrome Association | syndrome | severe acute respiratory syndrome | Premenstrual syndrome | Le syndrome de Peter Pan | Alport syndrome | Usher syndrome | The China Syndrome | Sudden Infant Death Syndrome | Stockholm Syndrome (band) | Stockholm Syndrome | Stickler syndrome | Stevens–Johnson syndrome | Sjögren's syndrome | Restless legs syndrome |