Cyclic Neutropenia

SCN and CN are autosomal dominant disorders of neutrophil production caused by mutations in the ELANE gene. Both disorders lead to lifelong problems with recurrent infections. CN is characterized by very low, non-oscillating neutrophil counts with normal hemoglobin and platelet levels. The bone marrow shows a selective defect in neutrophil formation with promyelocytic maturation arrest. Typical infections include omphalitis, pneumonia, sinusitis and gingivitis. CN typically follows a 3-week cycle of neutropenia, fever and mouth ulcers. The diagnosis is usually made in infancy, and infections may lessen in severity with age.

Tests Available

Forms and Documents

Test Details

ELANE (ELA2), LPIN2, MEFV, MVK, NLRP3 (CIAS1), PSTPIP1, TNFRSF1A
  • Confirmation of a clinical diagnosis
  • To assist in determining the most appropriate therapy, as the response to specific therapeutic modalities depends on the diagnosis
  • Recurrence risk
  • Carrier testing in at-risk family members
  • Prenatal diagnosis
  • Next-Gen Sequencing

Ordering

367
3 weeks
2-5 mL Blood - Lavender Top Tube
Oral Rinse (30-40 mL) | Buccal Swabs

Billing

81404x1, 81479x1
Yes
Yes
* For price inquiries please email zebras@genedx.com

References

  1. Aksentijevich et al., (2007) Arth Rheum 56:1273-1285
  2. Dode et al., (2002) Arth Rheum 46:2181-2188
  3. Aksentijevich et al., (2001) Am J Hum Genet 69:301-314
  4. Booty et al., (2009) Arth Rheum 60:1851-1861
  5. Touitou (2001) Eur J Hum Genet 9:473-483
  6. Aksentijevich et al., (1999) Am J Hum Genet 64:949-962
  7. Aganna et al., (2003) Arth Rheum 48:2632-2644
  8. Cuisset et al., (2001) Eur J Hum Genet 9:260-266
  9. Mandey et al., (2006) Hum Mutat 27:796-802
  10. D’Osualdo et al., (2005) Eur J Hum Genet 13:314-320
  11. El-Shanti et al., (2007) Clin Ortho Rel Res 462:11-19
  12. Shoham et al,, (2003) PNAS 100:13501-13506
  13. Wise et al,, (2002) Hum Mol Genet 11:961-969
  14. Horwitz, M. (1999) Nat Gen 23:433-436
  15. Bellanne-Chantelot (2004) Blood 103: 4119-4125
  16. Dale et al., (2000) Blood 96:2317-2322

Forms and Documents

Test Details

ELANE (ELA2)
  • Confirmation of a clinical diagnosis
  • Prenatal diagnosis
  • Capillary Sequencing

Ordering

105
3 weeks
2-5 mL Blood - Lavender Top Tube
Oral Rinse (30-40 mL)|Dried Blood Spots|Buccal Swabs

Billing

81479x1
Yes
Yes
* For price inquiries please email zebras@genedx.com

References

  1. Bellanne-Chantelot, C, Mutations in the ELA2 gene correlate with more severe expression of neutropenia: a study of 81 patients from the French Neutropenia Registry, Blood 103: 4119-4125, 2004.
  2. Horwitz, M., Mutations in ELA2, encoding neutrophil elastase, define a 210day biological clock in cyclic haematopoiesis, Nat. Gen. 23:433-436, 1999.
  3. Dale et al, Mutations in the gene encoding neutrophil elastase in congenital and cyclic neutropenia, Blood 96: 2317-2322, 2000