Genetic Testing Company | The DNA Diagnostic Experts | GeneDx

In observance of the holidays, GeneDx will be closed for business on Thursday, December 25, 2014 and on Thursday, January 1, 2015. We will be unable to receive and process specimens. FedEx and UPS will also not be in operation. Except for the aforementioned dates, GeneDx will operate on our normal schedule (Monday-Saturday), including December 24th and December 31st.  If you have any questions or inquiries, please call us at 301-519-2100 or email us at zebras@genedx.com.

Prenatal Noonan Spectrum Disorders Panel

FORMS AND DOCUMENTS

TEST DETAILS

Genes:
BRAF, HRAS, KRAS, MAP2K1, MAP2K2, PTPN11, RAF1, SHOC2, SOS1
Disorders:
Clinical Utility:
  • Prenatal ultrasound findings suggestive of Noonan syndrome, including cystic hygroma
  • Fetus with ultrasound anomalies & parent with clinical diagnosis of Noonan syndrome
Lab Method:
Resequencing Array

ORDERING

Test Code:
357
Turnaround Time:
2-3 weeks
Preferred Specimen:
20 mg CVS
Alternative Specimen:
20 mL Amniotic Fluid, 2 T25 flasks of cultured amniocytes, 2 T25 flasks of cultured chorionic villi

BILLING

CPT Codes:
81400x1, 81404x1, 81405x1, 81265x1, 88235x1
New York Approved:
Yes
ABN Required:
Yes
Billing Information:
View Prenatal Billing Policy
ICD Codes:
  • 759.89: Other Congenital malformation syndromes affecting multiple systems
* For price inquiries please email zebras@genedx.com

REFERENCES

  1. Achiron, et al (2000) Noonan Syndrome: A cryptic condition in early gestation. Am J Med Genet 92:159-165
  2. Adekunle, et al (1999) Increased first trimester nuchal translucency: pregnancy and infant outcomes after routine screening for Down’s syndrome in an unselected antenatal population. Br J Radiol 72:457-60
  3. Tartaglia, et al (2001) Mutations in PTPN11, encoding the protein tyrosine phosphatase SHP-2, cause Noonan syndrome. Nat Genet 29:465-8
  4. Trauffer, et al (1994) The natural history of euploid pregnancies with first-trimester cystic hygromas. Am J Obstet Gynecol 170:1279-84
  5. Benacerraf, et al (1989) The prenatal sonographic features of Noonan syndrome. J Ultrasound Med 8:59-63
  6. Ferguson et al. (2006) PTPN11 gene analysis in fetuses with abnormal ultrasound findings: The GeneDx experience. Poster presentation at the Cardiofaciocutaneous Syndrome & Noonan Syndrome International Symposium, Nov 17-19, 2006, Potomac, MD
  7. Hiippala, et al (2001) Fetal nuchal translucency and normal chromosomes: a long-term follow-up study. Ultrasound Obstet Gynecol 18:18-22
  8. Reynders, et al (1997) First trimester isolated fetal nuchal lucency: Significance and outcome. J Ultrasound Med 16:101-105
  9. Souka, et al (2001) Outcome of pregnancy in chromosomally normal fetuses with increased nuchal translucency in the first trimester. Ultrasound Obstet Gynecol 18:9-17
  10. Pandit B et al. (2007) Nat Genet 39:1007-1012. Lee et al. (2009) Clin Genet. 75(2):190-4

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