mp-530 - mp-530 - Medical Policies
Myocardial Sympathetic Innervation Imaging in Patients with Heart Failure
Policy Number: MP-530
Latest Review Date: September 2020
Policy Grade: B
Myocardial sympathetic innervation imaging with 123Iodine meta-iodobenzylguanidine (MIBG) is considered not medically necessary and investigational for patients with heart failure.
DESCRIPTION OF PROCEDURE OR SERVICE:
In patients with heart failure, activation of the sympathetic nervous system is an early mechanism to compensate for decreased myocardial function. The concentration of Iodine 123 meta-iodobenzylguanidine (MIBG) over several hours after injection of the agent is a potential marker of sympathetic neuronal activity and may correlate with the severity of heart failure. MIBG activity is proposed as a prognostic marker in patients with heart failure to aid in the identification of patients at risk of 1- and 2- year mortality. The marker could also potentially be used to guide treatment decisions or to monitor the effectiveness of heart failure treatments.
An estimated 5.7 million adults in the United States have heart failure, and heart failure is the main cause of death for approximately 58,3000 Americans each year. Underlying causes of heart failure include coronary artery disease (CAD), hypertension, valvular disorders, and primary cardiomyopathies. These conditions reduce myocardial pump function and decrease left ventricular ejection fraction (LVEF). An early mechanism to compensate for this decreased myocardial function is activation of the sympathetic nervous system. The increased sympathetic activity initially helps compensate for heart failure by increasing heart rate and myocardial contractility in order to maintain blood pressure and organ perfusion. However, over time this places additional strain on the myocardium, increasing coronary perfusion requirements, which can lead to worsening of ischemic heart disease and or myocardial damage. As the ability of the heart to compensate for reduced myocardial function diminishes, clinical symptoms of heart failure develop. Another detrimental effect of heightened sympathetic activity is an increased susceptibility to potentially fatal ventricular arrhythmias.
Overactive sympathetic innervation associated with heart failure involves increased neuronal release of norepinephrine (NE), the main neurotransmitter of the cardiac sympathetic nervous system. In response to sympathetic stimulation, vesicles containing NE are released into the neuronal synaptic cleft. The released NE binds to post-synaptic beta-1, beta-2 and alpha receptors, enhances adenyl cyclase activity and brings about the desired cardiac stimulatory effects. NE is then taken back into the presynaptic space for storage or catabolic disposal that terminates the synaptic response by the uptake-1 pathway. The increased release of NE is usually accompanied by decreased NE reuptake, thereby further increase circulating NE levels.
Guanethidine is a false neurotransmitter that is an analogue of NE; it is also taken up by the uptake-1 pathway. Iodine 123 meta-iodobenzylguanidine (known as 123I-MIBG or MIBG) is guanethidine that is chemically modified and labeled with radioactive iodine. MIBG moves into the synaptic cleft and then is taken up and stored in the presynaptic nerve space in a manner that is similar to NE. However, unlike NE, MIBG is not catabolized and thus concentrates in myocardial sympathetic nerve endings. This concentrated MIBG can be imaged with a conventional gamma camera. The concentration of MIBG over several hours after injection of the agent is thus a reflection of sympathetic neuronal activity, which in turn may correlate with the severity of heart failure.
MIBG myocardial imaging has been in use in Europe and Japan and standardized procedures for imaging have been proposed by European organizations. Administration of MIBG is recommended by slow (1 to 2 minutes) injection. Planar images of the thorax are acquired 15 minutes (early image) and four hours (late image) after injection. In addition, optional single-photon emission computed tomography (SPECT) imaging can be performed following the early and late planar images. MIBG uptake is semi-quantified by determining the average count per pixel in regions of interest (ROI) drawn over the heart and the upper mediastinum in the planar anterior view. There is no single universally used myocardial MIBG index. The most commonly used myocardial MIBG indices are the early heart to mediastinum (H/M) ratio, late H/M ratio and the myocardial MIBG washout rate. The H/M ratio is calculated by taking the average count per pixel in the myocardium divided by the average count per pixel in the mediastinum. The myocardial washout rate is expressed as the rate of decrease in myocardial counts over time between early and late imaging (normalized to mediastinal activity).
MIBG activity is proposed as a prognostic marker in patients with heart failure, to be used in conjunction with established markers or prognostic models to identify heart failure patients at increased risk of short-term mortality. MIBG activity could also potentially be used to guide treatment decisions or to monitor the effectiveness of heart failure treatments.
The most recent literature update was performed through July 8, 2020.
Summary of Evidence
For individuals with heart failure who receive imaging with MIBG for prognosis, the evidence includes numerous studies that findings on cardiac imaging with MIBG predict outcomes in patients with heart failure. Relevant outcomes are overall survival, disease-specific survival, functional outcomes, health status measures, quality of life, hospitalizations, and medication use. While the available studies vary in their patient inclusion criteria and methods for analyzing MIBG parameters, the highest quality studies demonstrate a significant association of MIBG results with adverse cardiac events, including cardiac death. Moreover, MIGB findings have been shown to improve the ability of the Seattle Heart Failure Model and other risk prediction models to predict mortality. However, there is no direct published evidence on the clinical utility of MIBG (i.e., whether findings of the test would lead to patient management changes that improve health outcomes) and no chain of evidence can be constructed to support clinical utility. Management changes made as a result of MIBG imaging are uncertain, and it is not possible to determine whether management changes based on MIBG results lead to improved health outcomes compared with management without MIBG imaging. The evidence is insufficient to determine the effects of the technology on health outcomes.
Practice Guidelines and Position Statements
National Heart, Lung and Blood Institute
In 2011, a working group of the National Heart, Lung, and Blood Institute published a report on translation of cardiovascular molecular imaging. In regard to imaging the heart with MIBG, the report cited the ADMIRE-HF trial [discussed earlier] and stated that additional clinical trials are needed to determine the efficacy of heart failure management strategies with MIBG compared to usual care without MIBG imaging.
American College of Cardiology Foundation et al
The American College of Cardiology Foundation and the American Heart Association updated its 2013 joint guidelines (2017) on the management of heart failure with the Heart Failure Association of America. These guidelines did not address the use of MIBG imaging in heart failure management.
U.S. Preventive Services Task Force Recommendations
Heart failure, Sympathetic innervation, 123Iodine meta-iodobenzylguanidine, 123I-MIBG, MIBG, Myocardial Imaging, AdreView, SPECT, I-123
APPROVED BY GOVERNING BODIES:
In 2008, AdreView® (Iobenguane I 123) Injection (GE Healthcare) was approved by the Food and Drug Administration new drug application process (22-290) for the detection of primary or metastatic pheochromocytoma or neuroblastoma as an adjunct to other diagnostic tests.
In 2013, the Food and Drug Administration approved a supplemental new drug application (22-290/S001) for AdreView® and expanded the labeled indication to include scintigraphic assessment of sympathetic innervation of the myocardium by measurement of the H/M ratio of radioactivity uptake in patients with New York Heart Association class II or class III heart failure and left ventricular ejection fraction less than 35%.
Coverage is subject to member’s specific benefits. Group specific policy will supersede this policy when applicable.
ITS: Home Policy provisions apply.
FEP: Special benefit consideration may apply. Refer to member’s benefit plan. FEP does not consider investigational if FDA approved and will be reviewed for medical necessity.
Myocardial sympathetic innervations imaging, planar qualitative and quantitative assessment;
; with tomographic SPECT
Iodine I-123 iobenguane, diagnostic, per study dose, up to 15 millicuries
- Akutsu Y, Kaneko K, Kodama Y, et al. Iodine-123 mIBG Imaging for predicting the development of atrial fibrillation. JACC Cardiovasc Imaging. Jan 2011; 4(1):78-86.
- Al Badarin FJ, Wimmer AP, Kennedy KF, et al. The utility of ADMIRE-HF risk score in predicting serious arrhythmic events in heart failure patients: incremental prognostic benefit of cardiac 123I-mIBG scintigraphy. J Nucl Cardiol. Aug 2014; 21(4):756-762; quiz 753-755, 763-755.
- Armstrong L, Sharif JA, Galloway P et al. Evaluating the use of metabolite measurement in children receiving treatment with a thiopurine. Aliment Pharmacol Ther 2011; 34(9):1106-14.
- Buxton DB, Antman M, Danthi N et al. Report of the National Heart, Lung, and Blood Institute working group on the translation of cardiovascular molecular imaging. Circulation 2011; 123(19):2157-63.
- Centers for Disease Control and Prevention (CDC). Heart Failure Fact Sheet. Available online at: www.cdc.gov/dhdsp/data_statistics/fact_sheets/fs_heart_failure.htm. Last accessed August 2018.
- Chirumamilla A, Travin MI. Cardiac applications of 123I-mIBG imaging. Semin Nucl Med. Sept 2011; 41(5):374-87.
- Doi T, Nakata T, Hashimoto A et al. Synergistic prognostic values of cardiac sympathetic innervation with left ventricular hypertrophy and left atrial size in heart failure patients without reduced left ventricular ejection fraction: a cohort study. BMJ Open 2012; 2(6). Eur Heart J 2008; 29(9):1147-59.
- Doi T, Nakata T, Hashimoto A, et al. Synergistic prognostic values of cardiac sympathetic innervation with left ventricular hypertrophy and left atrial size in heart failure patients without reduced left ventricular ejection fraction: a cohort study. BMJ Open. 2012; 2(6).
- Flotats A, Carrio I, Agostini D et al. Proposal for standardization of 123I-metaiodobenzylguanidine (MIBG) cardiac sympathetic imaging by the EANM Cardiovascular Committee and the European Council of Nuclear Cardiology. Eur J Nucl Med Mol Imaging 2010; 37(9):1802-12.
- Food and Drug Administration (FDA). Approval letter: NDA 22-290. AndreView®, (IIobenguane I 123) 2mCi/mL Injection. 2008; https://www.accessdata.fda.gov/drugsatfda_docs/nda/2008/022290s000toc.cfm. Accessed August 9, 2018.
- Food and Drug Administration (FDA). AdreView: Highlights of Prescribing Information. Available online at: www.accessdata.fda.gov/drugsatfda_docs/label/2013/022290s001lbl.pdf.
- Food and Drug Administration (FDA). Supplemental Approval letter: NDA 22-290/S-001. AdreView (Iobenguane I 123) Injection. 2013; https://www.accessdata.fda.gov/drugsatfda_docs/appletter/2013/022290orig1s001ltr.pdf. Accessed August 9, 2018.
- Jacobson AF, Senior R, Cerqueira MD et al. Myocardial iodine-123 meta-iodobenzylguanidine imaging and cardiac events in heart failure. Results of the prospective ADMIRE-HF (AdreView Myocardial Imaging for Risk Evaluation in Heart Failure) study. J Am Coll Cardiol 2010; 55(20):2212-21.
- Jain KK, Hauptman PJ, Spertus JA, et al. Incremental utility of iodine-123 meta-iodobenzylguanidine imaging beyond established heart failure risk models. J Card Fail. Aug 2014; 20(8):577-583.
- Katoh S, Shishido T, Kutsuzawa D et al. Iodine-123-metaiodobenzylguanidine imaging can predict future cardiac events in heart failure patients with preserved ejection fraction. Ann Nucl Med 2010; 24(9):679-86.
- Ketchum ES, Jacobson AF, Caldwell JH et al. Selective improvement in Seattle Heart Failure Model risk stratification using iodine-123 meta-iodobenzylguanidine imaging. J Nucl Cardiol 2012; 19(5):1007-16.
- Klein T, Abdulghani M, Smith M, et al. Three-Dimensional 123I-Meta-Iodobenzylguanidine Cardiac Innervation maps to assess substrate and successful ablation sites for ventricular tachycardia: a feasibility study for a novel paradigm of innervation imaging. Circ Arrhythm Electrophysiol. Feb 23 2015.
- Minamisawa M, Izawa A, Motoki H, et al. Prognostic significance of neuroadrenergic dysfunction for cardiovascular events in patients with acute myocardial infarction. Circ J. 2015; 79(10):2238-2245.
- Nakata T, Nakajima K, Yamashina S et al. A pooled analysis of multicenter cohort studies of (123) I-mIBG imaging of sympathetic innervation for assessment of long-term prognosis in heart failure. JACC Cardiovasc Imaging 2013; 6(7):772-84.
- Narula J, Gerson M, Thomas GS, et al. (1) (2) (3) I-MIBG Imaging for Prediction of Mortality and Potentially Fatal Events in Heart Failure: The ADMIRE-HFX Study. J Nucl Med. Jul 2015; 56(7):1011-1018.
- Scala O, Paolillo S, Formisano R, et al. Sleep-disordered breathing, impaired cardiac adrenergic innervation and prognosis in heart failure. Heart. Jun 23 2016.
- Sood N, Al Badarin F, Parker M et al. Resting perfusion MPI-SPECT combined with cardiac 123I-mIBG sympathetic innervation imaging improves prediction of arrhythmic events in non-ischemic cardiomyopathy patients: sub-study from the ADMIRE-HF trial. J Nucl Cardiol 2013; 20(5):813-20.
- Treglia G, Stefanelli A, Bruno I et al. Clinical usefulness of myocardial innervation imaging using Iodine-123-meta-iodobenzylguanidine scintigraphy in evaluating the effectiveness of pharmacological treatments in patients with heart failure: an overview. Eur Rev Med Pharmacol Sci 2013; 17(1):56-68.
- Verberne HJ, Brewster LM, Somsen GA et al. Prognostic value of myocardial 123Imetaiodobenzylguanidine (MIBG) parameters in patients with heart failure: a systematic review.
- Verschure DO, Veltman CE, Manrique A, et al. For what endpoint does myocardial 123I-MIBG scintigraphy have the greatest prognostic value in patients with chronic heart failure? Results of a pooled individual patient data meta-analysis. Eur Heart J Cardiovasc Imaging. Sep 2014; 15(9):996-1003.
- Yancy CW, Jessup M, Bozkurt B et al. 2013 ACCF/AHA guideline for the management of heart failure: executive summary: a report of the American College of Cardiology Foundation/American Heart Association Task Force on practice guidelines. Circulation 2013; 128(16):1810-52.
- Yancy CW, Jessup M, Bozkurt B, et al. 2017 ACC/AHA/HFSA Focused Update of the 2013 ACCF/AHA guideline for the management of heart failure: A report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines and the Heart Failure Society of America. Circulation. Apr 28 2017; 136(6):e137-e161.
Medical Policy Panel, June 2013
Medical Policy Group, June 2013 (4)
Medical Policy Administration Committee, August 2013
Available for comment August 22 through October 5, 2013
Medical Policy Panel, June 2014
Medical Policy Group, June 2014 (4): Updated Key Points, Practice and Position statement and References. No changes to the policy at this time.
Medical Policy Panel, June 2015
Medical Policy Group (4): Updates to Key Points and References. No changes to policy statement.
Medical Policy Panel, September 2016
Medical Policy Group (4): Updates to Key Points, Key Words and References. No changes to policy statement.
Medical Policy Panel, September 2017
Medical Policy Group, September 2017 (4): Updates to Description and Key Points. No change to policy statement.
Medical Policy Panel, September 2018
Medical Policy Group, September 2018 (4): Updates to Key Points, Governing Bodies, Practice Guidelines and References.
Medical Policy Panel, September 2019
Medical Policy Group, September 2019 (4): Updates to References. No changes to policy statement.
Medical Policy Panel, September 2020
Medical Policy Group, September 2020 (4): Updates to Key Points. No change to policy statement.
This medical policy is not an authorization, certification, explanation of benefits, or a contract. Eligibility and benefits are determined on a case-by-case basis according to the terms of the member’s plan in effect as of the date services are rendered. All medical policies are based on (i) research of current medical literature and (ii) review of common medical practices in the treatment and diagnosis of disease as of the date hereof. Physicians and other providers are solely responsible for all aspects of medical care and treatment, including the type, quality, and levels of care and treatment.
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3. The technology must improve the net health outcome;
4. The technology must be as beneficial as any established alternatives;
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