Cornelia de Lange Syndrome
NGS panel

Genes
(full coding
region):		 AFF4, ANKRD11, HDAC8, KMT2A, NIPBL, RAD21, SMC3, SMC1A, TAF6

List of diseases covered by the panel
Non-coding variants: List of non-coding variants covered by the panel
Lab method: NGS panel with CNV analysis
TAT: 6-9 weeks
Specimen requirements: 2-4 ml of blood with anticoagulant EDTA

1 µg DNA in TE, AE or pure sterile water at 100-250 ng/µl
The A260/A280 ratio should be 1.8-2.0. DNA sample should be run on an agarose gel as a single band, showing no degradation, alongside with a quantitative DNA marker.
Ordering information: Go to online ordering or download sample submission form

Deletion/duplication analysis of the NIPBL gene

Genes: NIPBL
Lab method: MLPA
TAT: 4-6 weeks
Specimen requirements: 2-4 ml of blood with anticoagulant EDTA

1 µg DNA in TE, AE or pure sterile water at 100-250 ng/µl
The A260/A280 ratio should be 1.8-2.0. DNA sample should be run on an agarose gel as a single band, showing no degradation, alongside with a quantitative DNA marker.
Ordering information: Go to online ordering or download sample submission form

Indications for genetic testing:

1. Confirmation of clinical diagnosis
2. Carrier testing of at-risk female relatives
3. Prenatal diagnosis for known familial mutation
4. Genetic counseling

Cornelia de Lange syndrome (CdLS) is characterized by distinctive facial features, growth retardation, developmental delay, hirsutism, and limb abnormalities. Craniofacial features include synophrys, arched eyebrows, long eyelashes, small upturned nose and thin downturned lips, small widely spaced teeth, and microcephaly.

Additional findings may include cardiac defects, gastrointestinal dysfunction, hearing loss, myopia, seizures, cleft palate, and cryptorchidism or hypoplastic genitalia.

The prevalence of disorder is estimated at 1:50,000 for the classic form of CdLS. CdLS can be inherited in an autosomal dominant or X-linked manner.

References:

Barisic I et al. EUROCAT Working Group. Descriptive epidemiology of Cornelia de Lange syndrome in Europe. Am J Med Genet A.2008;146A:51–9.
Deardorff MA et al. Cornelia de Lange Syndrome. GeneReviews® 2005 Sept 16 (Updated 2011 Oct 27).
Kline AD et al. Natural history of aging in Cornelia de Lange syndrome. Am J Med Genet C Semin Med Genet. 2007;145C:248–60.