NGS Cardiac Panels

 

Disorder Arrhythmogenic right ventricular dysplasia
Brugada syndrome
Cardiofaciocutaneous Syndrome
Dilated cardiomyopathy
Emery-Dreifuss muscular dystrophy
Familial atrial fibrillation
Hypertrophic cardiomyopathy
Long QT syndrome
Noonan syndrome
Clinical info

The comprehensive panel consists of 108 genes that are associated with a variety of structural abnormalities, arrhythmias, and syndromic presentations. Cardiomyopathies often present later in life and may be genetic or related to lifestyle factors or other health issues. Signs and symptoms of dilated cardiomyopathy may include congestive heart failure, fatigue, and shortness of breath. Arrhythmias are also common, and thrombotic events are more prevalent. Individuals with hypertrophic cardiomyopathy may be asymptomatic or exhibit with a wide range of severity, even within the same family. Common features include shortness of breath and chest pain, and these findings can occur at younger ages than dilated forms.
These disorders can be inherited as autosomal recessive, autosomal dominant, X-linked recessive, or X-linked dominant conditions. However, the inheritance pattern for some of these conditions is uncertain, and many of them exhibit incomplete penetrance.

In addition to the comprehensive panel, four subpanels can also be requested for Brugada syndrome (18 genes), Dilated & Arrhythmogenic cardiomyopathies (51 genes), hypertrophic cardiomyopathy (24 genes), and Long QT syndrome (18 genes)

List of Genes and Associated Clinical Phenotypes

Indications

Molecular testing is useful to confirm the diagnosis and to identify the disease causing mutations within a family to allow for carrier testing and prenatal diagnosis.

Detection

The current design of the comprehensive cardiac panel covers the coding region for all 108 genes and the flanking intronic sequences. This method allows for analysis of greater than 98% of the targeted sequence for the detection of nucleotide substitutions and small deletions and duplications. Large deletions and duplications will not be detected by this panel. Mutations and variants identified on the panel are confirmed with Sanger sequencing. All novel and apparently pathogenic changes are reported when found within the coding region as well as within 10 basepairs of each intron/exon boundary for each gene. Promoter and 3' untranslated sequences are not included in the current analysis. It should be noted that the current protocol is not specifically designed to detect copy number alterations and single exon deletions may require additional follow-up to determine whether or not they represent technical artifacts.

We recommend further array-based testing to more accurately address the concerns of dosage alterations. The Cytogenetic Laboratory at GGC offers a high resolution whole genome SNP microarray. The GGC Diagnostic Laboratory Directors are available for further consultation regarding the limitations of the NGS and array testing procedures.

Associated Tests

The following genes can also be ordered as individual sequencing tests:

ACADVL
BRAF
GLA
HRAS
KRAS
MAP2K1/MAP2K2
PTPN11
RAF1
SLC22A5
SOS1

Effective January 1, 2017, all NGS panels are performed on an exome backbone with the potential for reflex to whole exome sequencing at a reduced cost. Please contact the laboratory to discuss the requirements for exome sequencing.

Specimen Requirements 5 to 10 ml of peripheral blood collected in an EDTA (lavender top) Vacutainer tube is preferred. The minimal blood needed for reliable DNA isolation is 3 ml.
Transport The specimen should be kept at room temperature and delivered via overnight shipping. FedEx is preferred. If shipment is delayed by one or two days, the specimen should be refrigerated and shipped at room temperature. Do not freeze the specimen.  Samples collected on Friday can be safely designated for Monday delivery.
Turnaround time 8-10 weeks
Prenatal testing

If pathogenic mutation(s) are identified in an affected individual using this panel, prenatal diagnosis is available for future pregnancies. Sanger sequencing will be used for prenatal diagnosis when there is a known familial mutation. Additional fees for cell culture and maternal cell contamination may apply. Maternal cell contamination studies are required for all prenatal molecular tests. Contact the laboratory prior to sending a prenatal specimen.

CPT Codes 81413
Cost $3500

Insurance billing is available for this test. The Billing Form is required along with copies of the authorization or letter of agreement from the insurance company.
Contact For further information contact one of our This email address is being protected from spambots. You need JavaScript enabled to view it. at 1-800-473-9411.

NGS Panel Requisition Form

Please submit a completed Requisition Form with all samples.

 

Test Finder

Interested in our tests? Take a look at our test finder.

Molecular Diagnostic Lab Faculty

Clearing Div - do not delete (is not shown)