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Printer Friendly Version KIF6 Genotyping for Predicting Cardiovascular Risk and/or Effectiveness of Statin Therapy

KIF6 Genotyping for Predicting Cardiovascular Risk and/or Effectiveness of Statin Therapy

 

DESCRIPTION

Genetic testing to determine the KIF6 Trp719Arg variant status of patients is being evaluated as a prognostic test to predict risk of future cardiovascular events and/or as a pharmacogenetic test to predict response to statin therapy, particularly in high-risk patients.
 
Analysis of prospective observational studies of cardiovascular health, and of the placebo arm of randomized controlled trials of statin intervention in at-risk populations have suggested a significant association between the Trp719Arg single nucleotide polymorphism (SNP; rs20455) in kinesin-like protein 6 (KIF6) and the development of clinical coronary artery disease (CAD). Approximately 60 percent of the population carries the putative KIF6 high-risk 719Arg allele. Moreover, carriers of the 719Arg allele in the treatment arms of the statin trials appeared to be at no increased risk, or at decreased risk of CAD or recurrent myocardial infarction (MI), depending on the intensity of the statin therapy. These results supported the development of a KIF6 Trp719Arg genotyping test for use as a predictor of CAD risk and of the likely effectiveness of statin therapy.

Celera Corporation holds a U.S. patent relating to methods of determining heart attack risk by detecting the KIF6 gene variant and reduction of such increased risk by statin therapy. Celera's Berkeley HeartLab subsidiary has been offering KIF6 genotyping (KIF6-StatinCheck™ Genotype Test) since July 2008. San Francisco General Hospital’s Clinical Chemistry Laboratory (University of California, San Francisco), is the only non-Celera lab to obtain a license to develop a KIF6 LTD; a small number of clinical labs/health care groups have negotiated with Celera to offer the test by sending it to BHL (e.g., Aurora Health Care of Milwaukee, WI).
 
The KIF6 genotyping test is not a manufactured test kit and has not been reviewed by the Food and Drug Administration. Rather, it is a laboratory-developed test (LTD), offered by clinical laboratories licensed under CLIA for high-complexity testing. According to a Celera press release dated November 3, 2010, the company plans to submit a Premarket Approval application to the FDA by the end of the year. 

 

POLICY

KIF6 Genotyping is considered investigational for predicting cardiovascular risk and/or the effectiveness of statin therapy.

 

POLICY EXCEPTIONS

None

 

POLICY GUIDELINES

Investigative service is defined as the use of any treatment procedure, facility, equipment, drug, device, or supply not yet recognized by certifying boards and/or approving or licensing agencies or published peer review criteria as standard, effective medical practice for the treatment of the condition being treated and as such therefore is not considered medically necessary.

The coverage guidelines outlined in the Medical Policy Manual should not be used in lieu of the Member's specific benefit plan language.

 

POLICY HISTORY

03/31/2011: Approved by Medical Policy Advisory Committee.  

03/27/2012: Policy reviewed; no changes.

01/14/2013:  Added the following new 2013 CPT codes to the Code Reference section: 81479.

 

SOURCE(S)

Blue Cross Blue Shield Association policy # 2.04.67 

 

CODE REFERENCE

Non-Covered Codes

This is not an all-inclusive list of non-covered procedure codes.

All codes billed for this procedure are considered investigational and not eligible for coverage. 

Code Number

Description

CPT

81479  Unlisted molecular pathology procedure (New 01-01-2013)

83890

Molecular diagnostics; molecular isolation or extraction, each nucleic acid type (ie, DNA or RNA) (Deleted 12-31-2012)

83891Molecular diagnostics; isolation or extraction of highly purified nucleic acid, each nucleic acid type (ie, DNA or RNA)  (Deleted 12-31-2012)
83892Molecular diagnostics; enzymatic digestion, each enzyme treatment  (Deleted 12-31-2012)
83893Molecular diagnostics; dot/slot blot production, each nucleic acid preparation  (Deleted 12-31-2012)
83894Molecular diagnostics; separation by gel electrophoresis (eg, agarose, polyacrylamide), each nucleic acid preparation  (Deleted 12-31-2012)
83896Molecular diagnostics; nucleic acid probe, each  (Deleted 12-31-2012)
83897Molecular diagnostics; nucleic acid transfer (eg, Southern, Northern), each nucleic acid preparation  (Deleted 12-31-2012)
83898Molecular diagnostics; amplification, target, each nucleic acid sequence  (Deleted 12-31-2012)
83900Molecular diagnostics; amplification, target, multiplex, first 2 nucleic acid sequences  (Deleted 12-31-2012)
83901Molecular diagnostics; amplification, target, multiplex, each additional nucleic acid sequence beyond 2 (List separately in addition to code for primary procedure)  (Deleted 12-31-2012)
83902Molecular diagnostics; reverse transcription  (Deleted 12-31-2012)
83903Molecular diagnostics; mutation scanning, by physical properties (eg, single strand conformational polymorphisms [SSCP], heteroduplex, denaturing gradient gel electrophoresis [DGGE], RNA'ase A), single segment, each  (Deleted 12-31-2012)
83904Molecular diagnostics; mutation identification by sequencing, single segment, each segment  (Deleted 12-31-2012)
83905Molecular diagnostics; mutation identification by allele specific transcription, single segment, each segment  (Deleted 12-31-2012)
83906Molecular diagnostics; mutation identification by allele specific translation, single segment, each segment  (Deleted 12-31-2012)
83907Molecular diagnostics; lysis of cells prior to nucleic acid extraction (eg, stool specimens, paraffin embedded tissue), each specimen  (Deleted 12-31-2012)
83908Molecular diagnostics; amplification, signal, each nucleic acid sequence  (Deleted 12-31-2012)
83909Molecular diagnostics; separation and identification by high resolution technique (eg, capillary electrophoresis), each nucleic acid preparation  (Deleted 12-31-2012)
83912Molecular diagnostics; interpretation and report  (Deleted 12-31-2012)
84999Unlisted chemistry procedure

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ICD-9 Diagnosis

 

 

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