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Test Code BRTP Rapid Hereditary Breast Cancer Treatment Decision Panel, Varies


Ordering Guidance


This test is for patients diagnosed with cancer for whom results may impact treatment. A rapid turnaround time supports surgical and management decision making. For patients with cancer who do not need rapid results, order BRGYP / Hereditary Breast/Gynecologic Cancer Panel, Varies or COMCP / Hereditary Common Cancer Panel, Varies depending on the patient's personal and family history.

 

This test is not appropriate for patients who do not have cancer. If testing is needed based on a previous diagnosis of cancer or family history of cancer, order either BRGYP / Hereditary Breast/Gynecologic Cancer Panel, Varies or COMCP / Hereditary Common Cancer Panel, Varies, depending on the patient's personal and family history.

 

Targeted testing for familial variants (also called site-specific or known variants testing) is available for the genes on this panel. For more information see FMTT / Familial Variant, Targeted Testing, Varies. To obtain more information about this testing option, call 800-533-1710.

 

Testing minors for adult-onset predisposition syndromes is discouraged by the American Academy of Pediatrics, the American College of Medical Genetics and Genomics, and the National Society of Genetic Counselors.



Shipping Instructions


 



Specimen Required


Patient Preparation: A previous bone marrow transplant from an allogenic donor will interfere with testing. For information about testing patients who have received a bone marrow transplant, call 800-533-1710.

Specimen Type: Whole blood

Container/Tube:

Preferred: Lavender top (EDTA) or yellow top (ACD)

Acceptable: Green top (Sodium heparin)

Specimen Volume: 3 mL

Collection Instructions:

1. Invert several times to mix blood.

2. Send whole blood specimen in original tube. Do not aliquot.

Specimen Stability Information: Ambient 4 days/Refrigerated 4 days/Frozen 4 days

Additional Information:

1. Specimens are preferred to be received within 4 days of collection. Extraction will be attempted for samples received after 4 days, and DNA yield will be evaluated to determine if testing may proceed.

2. To ensure minimum volume and concentration of DNA is met, the preferred volume of blood must be submitted. Testing may be canceled if DNA requirements are inadequate.

 

Specimen Type: Saliva

Patient Preparation: Patient should not eat, drink, smoke, or chew gum 30 minutes prior to collection.

Supplies: Saliva Swab Collection Kit (T786)

Specimen Volume: 1 Swab

Collection Instructions: Collect and send specimen per kit instructions.

Specimen Stability Information: Ambient (preferred) 30 days/Refrigerated 30 days

Additional information: Due to lower quantity/quality of DNA yielded from saliva, some aspects of the test may not perform as well as DNA extracted from a whole blood sample. When applicable, specific gene regions that were unable to be interrogated will be noted in the report. Alternatively, additional specimen may be required to complete testing.


Genetics Test Information

This test utilizes next-generation sequencing to detect single nucleotide and copy number variants in 11 genes associated with hereditary breast cancer: ATM, BRCA1, BRCA2, CDH1, CHEK2, PALB2, PTEN (including promoter), RAD51C, RAD51D, STK11, and TP53. See Targeted Genes and Methodology Details for Rapid Hereditary Breast Cancer Treatment Decision Panel and Method Description for additional details.

 

Identification of a disease-causing variant may assist with diagnosis, prognosis, clinical management, recurrence risk assessment, familial screening, and genetic counseling for hereditary breast cancer.

Specimen Type

Varies

Specimen Minimum Volume

Whole blood: 1 mL; Saliva: See Specimen Required

Specimen Stability Information

Specimen Type Temperature Time Special Container
Varies Varies

Reject Due To

All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.

Reference Values

An interpretive report will be provided.

Day(s) Performed

Varies

Report Available

10 to 14 days

Specimen Retention Time

Whole blood: 2 weeks (if available); Saliva: 1 month; Extracted DNA: 3 months

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

81432