Crouzon Syndrome with Acanthosis Nigricans Mutation Analysis

Crouzon syndrome with ancanthosis nigricans is characterized by proptosis, strabismus, mandibular prognathism, and pigmentary changes in the regions of skin folds (acanthosis nigricans) among other features. Intellect is typically unaffected. Extremities are also typically unaffected although radiographic images may identify metacarpal-phalangeal shortening. A majority of cases are due to a specific missense variant c.1172C>A/p.Ala391Glu. If a diagnosis of Crouzon syndrome with ancanthosis nigricans is still suspected following a negative test, more comprehensive sequence analysis is available at other laboratories.

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Test Code
T0441

Turn Around Time
2-3 weeks

Billing

CPT Code
81403×1

Ordering Guidance

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

Details

Genes Covered
FGFR3 c1172

Methods
Sanger