DCX Sequencing

Mutations in the DCX gene are associated with X-linked lissencephaly in hemizygous males and subcortical band heterotopia (SBH), which gives the appearance of a “double cortex,”  in heterozygous females.  A few rare missense mutations have been reported to cause SBH in males.  Deletions/duplications account for a small percentage of mutations in females with SBH and also exist in males with lissencephaly.  A combination of DNA sequencing and deletion/duplication analysis of the DCX gene is expected to detect abnormalities in approximately 90% of individuals with SBH:100% of familial cases and 53-80% of sporadic cases.

Forms & Docs

Ordering

Place an order

Test Code
S0846

Turn Around Time
2-3 weeks

Billing

CPT Code
81405×1

Ordering Guidance

Most cases are due to sequence variants. Therefore, sequencing should be ordered first. If sequencing is unrevealing, then deletion/duplication analysis may be considered.

If there are questions regarding this test, please contact Client Services at 617-553-5880 or clientservices@claritasgenomics.com

Details

Genes Covered
DCX

Methods
Sanger