Test Directory
| Test Code | ||||||||||||||||||||||||||||||
| 1510 | ||||||||||||||||||||||||||||||
| Test Name | ||||||||||||||||||||||||||||||
| Cranioectodermal Dysplasia 4 | ||||||||||||||||||||||||||||||
| CPT Codes | ||||||||||||||||||||||||||||||
| 81479 | ||||||||||||||||||||||||||||||
| Expected Turnaround Time | ||||||||||||||||||||||||||||||
| Typically 2 to 4 weeks from receipt of a sample in the laboratory. All cases involving ongoing pregnancies will be expedited. | ||||||||||||||||||||||||||||||
| Clinical Utility | ||||||||||||||||||||||||||||||
| Genetic analysis to provide a molecular diagnosis of this disorder. Recommended for individuals with a personal and/or family history of this disorder to ensure appropriate treatment and establish recurrence risk for family members. | ||||||||||||||||||||||||||||||
| Specimen and Container Info | ||||||||||||||||||||||||||||||
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Non-Prenatal Specimens
Prenatal Specimens Either specimen type below is acceptable.
NOTE: For specimens from outside of North America, the preferred specimen type is Genomic DNA. HNL Genomics does not recommend shipping whole blood or cultured cells from any location other than the United States, Canada, or Mexico. |
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| Methodology | ||||||||||||||||||||||||||||||
| Next Generation Sequencing and Copy Number Variation Analysis | ||||||||||||||||||||||||||||||
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| Genomics - Snowdrift | ||||||||||||||||||||||||||||||
| Alternate Names | ||||||||||||||||||||||||||||||
| CED | ||||||||||||||||||||||||||||||
| Description | ||||||||||||||||||||||||||||||
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Cranioectodermal dysplasia (CED) is an autosomal recessive ciliopathy characterized by sagittal craniosynostosis, skeletal, facial and ectodermal abnormalities. Findings typically include: dolichocephaly, hypertelorism, frontal and occipital bossing, telecanthus, epicanthal folds or narrow palpebral fissures, retinitis pigmentosa, low set ears, everted lower lip, fine sparse hair, dental abnormalities consisting of hypoplastic, widely spaced or fused teeth, short limbs, brachydactyly, narrow chest with short ribs, and skin laxity. Some patients have been reported with renal failure due to nephronophthisis or hepatic failure. CED is also known as Sensenbrenner syndrome. CED is known to be caused by mutations in at least four genes, IFT122, WDR35, IFT43 and WDR19. Mutations in IFT122 cause CED1 (MIM 218330), while mutations in WDR35, IFT43 and WDR19 cause CED2 (MIM 613610), CED3 (MIM 614099) and CED4 (MIM 614378), respectively. The products of these genes are components of cilia. Autosomal recessive mutations in WDR35 also cause short rib-polydactyly syndrome, type V (SRPS5; MIM 614091), and mutations in WDR19 cause asphyxiating thoracic dystrophy 5 (ATD5; MIM 614376), disorders sharing many phenotypic findings with CED and other ciliopathies. |
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| Testing Schedule | ||||||||||||||||||||||||||||||
| Monday-Friday | ||||||||||||||||||||||||||||||
| Genes | ||||||||||||||||||||||||||||||
| WDR19 | ||||||||||||||||||||||||||||||
| MIM | ||||||||||||||||||||||||||||||
| 614378 | ||||||||||||||||||||||||||||||
| Disease Group | ||||||||||||||||||||||||||||||
| Craniosynostosis and Craniofacial Disorders, Skeletal Disorders | ||||||||||||||||||||||||||||||
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
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