Dysplastic Nevus Syndrome

Alternative Names/Synonyms	HCT, Hereditary Cancer Testing, Germline, Predictive, Hereditary Cancer, CDK4, CDKN2A
Laboratory	Diagnostic Medical Genetics
Sub-section	Advanced Molecular Diagnostics
Specimen Type	Blood or DNA
Test Code	DYNS1

Specimen Requirements (Sample Type)

Peripheral blood or DNA

Specimen Requirements (Volume (mL))

2 tubes x 4 mL of blood
5 ug in of DNA in TRIS-HCl or water only (no EDTA)

Specimen Requirements (Tube Type)

EDTA lavender top for blood
Collection Containers – Tube Types
or
2 mL screw top tube for DNA

Collection Requirements

Blood Collection Instructions

Storage / Shipment Details

Collect and ship samples at room temperature on the same day. Samples should be received within 24 to 48 hours.

Sample Stability

7 days

Cause for Rejection

Specimen Acceptability and Transport Guidance

Instrument, Methodology

Sequencing + CNV

Test Availability

STAT, Routine; Monday to Friday

STAT Turnaround Time

4 weeks

Routine Turnaround Time

6-8 weeks

Laboratory Contact Information

molecularlab.MSH@sinaihealth.ca

Approval Required

Yes if not associated with a Genetic Counsellor

Gene(s)

CDK4, CDKN2A

Sample Processing / Delivery

Samples received and processed Monday to Friday 8:30 am - 4:30 pm

Funded for patients with OHIP

Yes

Disease/Body Site

Hereditary Cancer; Indications outlined by Ontario Health (formerly Cancer Care Ontario); see link in Clinical Significance section