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  • Guideline Summary
  • NGC:010482
  • 2014 June 10

Screening, assessment, and management of fatigue in adult survivors of cancer: an American Society of Clinical Oncology Clinical Practice guideline adaptation.

Bower JE, Bak K, Berger A, Breitbart W, Escalante CP, Ganz PA, Schnipper HH, Lacchetti C, Ligibel JA, Lyman GH, Ogaily MS, Pirl WF, Jacobsen PB. Screening, assessment, and management of fatigue in adult survivors of cancer: an American Society of Clinical Oncology clinical practice guideline adaptation. J Clin Oncol. 2014 Jun 10;32(17):1840-50. [65 references] PubMed External Web Site Policy

View the original guideline documentation External Web Site Policy

This is the current release of the guideline.

Age Group

UMLS Concepts (what is this?)

SNOMEDCT_US
Acupuncture (44868003), Central stimulant (349897000), Central stimulant (372620004), Cognitive therapy (183383008), Cognitive therapy (228553007), Cognitive therapy (228557008), Cognitive therapy (304891004), Fatigue (248274002), Fatigue (84229001), Neoplasm (108369006), Patient education (311401005), Physical activity (48761009), Physical activity (68130003), Physical examination (302199004), Physical examination (5880005), Physical examination (81375008), Psychosocial intervention strategy (228558003), Screening procedure (20135006), Self-care interventions (384758001), Self-monitoring (310858007), Self-monitoring (441211000124106)

Major Recommendations

The recommendations were adapted from the three guidelines (original recommendation matrix provided in the Methodology Supplement [see the "Availability of Companion Documents" field]) by a multidisciplinary group of experts using evidence from the supplementary literature search and clinical experience as a guide. The majority of the recommendation text is listed verbatim from the three guidelines; however, there are some instances where the American Society of Clinical Oncology (ASCO) expert panel made modifications or additions to the recommendations to reflect local context, practice beliefs, and updated empiric evidence. These changes are identified with the words "modified from" preceding the guideline title after each subsection heading. Figure 1 in the original guideline document presents a two-page screening, assessment, treatment, and care map algorithm for fatigue adapted from the pan-Canadian guideline. Copyright permission for the adaption was obtained from the authors of the pan-Canadian and National Comprehensive Cancer Network (NCCN) guidelines.

Definition

Modified from NCCN Guideline for Cancer-Related Fatigue and NCCN Guideline for Survivorship

Cancer-related fatigue is a distressing, persistent, subjective sense of physical, emotional, and/or cognitive tiredness or exhaustion related to cancer and/or cancer treatment that is not proportional to recent activity and interferes with usual functioning. These guidelines are focused on fatigue in patients who have completed primary cancer treatment and/or are in clinical remission.

Recommendations

Screening

Modified from pan-Canadian guideline and NCCN Guideline for Cancer-Related Fatigue

  • All health care providers should routinely screen for the presence of fatigue from the point of diagnosis onward, including after completion of primary treatment.
  • All patients should be screened for fatigue as clinically indicated and at least annually.
  • Screening should be performed and documented using a quantitative or semi-quantitative assessment. For example, on a 0 to 10 numeric rating scale (0, no fatigue; 10, worst fatigue imaginable), mild fatigue is indicated as a score of 1 to 3, moderate fatigue as 4 to 6, and severe fatigue as 7 to 10. Because fatigue is rarely an isolated symptom, a multi-symptom screening tool may have greater clinical utility. Patients who report moderate to severe fatigue should undergo a comprehensive and focused assessment.

Table 1 in the original guideline document lists selected instruments for the measurement of fatigue, which could be used to supplement initial screening with the 0 to 10 numeric scale.

Comprehensive and Focused Assessment

Modified from NCCN Guideline for Survivorship

Regarding history and physical, first, perform a focused fatigue history, including:

  • Onset, pattern, and duration
  • Change over time
  • Associated or alleviating factors

Second, evaluate disease status by:

  • Evaluating risk of recurrence based on stage, pathologic factors, and treatment history
  • Performing a review of systems to determine if other symptoms substantiate suspicion for recurrence

Third, assess treatable contributing factors, including:

  • Comorbidities (see Table 2 in the original guideline document)
  • Medications (consider persistent use of sleep aids, pain medications, or antiemetics)
  • Alcohol/substance abuse
  • Nutritional issues (including weight/caloric intake changes)
  • Decreased functional status
  • Deconditioning/decreased activity level

As a shared responsibility, the clinical team must decide when referral to an appropriately trained professional (e.g., cardiologist, endocrinologist, mental health professional, internist, and so on) is needed.

Laboratory Evaluation

NCCN Guideline for Survivorship Verbatim

  • Consider performing laboratory evaluation based on presence of other symptoms, onset, and severity of fatigue.
  • Complete blood cell count with differential: compare end-of-treatment hemoglobin/hematocrit with current values; assess other cell lines (white blood cells [WBC] and platelets).
  • Comprehensive metabolic panel: assess electrolytes; assess hepatic and renal function.
  • Endocrinologic evaluation: TSH (thyroid-stimulating hormone); consider more comprehensive evaluation or referral to specialist if other symptoms present.

Treatment and Care Options

Modified from Pan-Canadian Guideline and NCCN Guideline for Cancer-Related Fatigue

Regarding education and counseling:

  • All patients should be offered specific education about fatigue after treatment (e.g., information about the difference between normal and cancer-related fatigue, persistence of fatigue after treatment, and causes and contributing factors).
  • Patients should be offered advice on general strategies that help manage fatigue (e.g., physical activity, guidance on self-monitoring of fatigue levels).
  • If treated for fatigue, patients should be observed and reevaluated on a regular basis to determine whether treatment is effective or needs to be reassessed.

Treatment of Contributing Factors

Modified from Pan-Canadian Guidelines and NCCN Guideline for Survivorship

Address all medical and substance-induced treatable contributing factors first (e.g., comorbidities, medications, nutritional issues, activity level). Table 2 in the original guideline document provides more details. Some patients can also benefit from interventions described in this article to treat fatigue. Currently, there are no clear standards for selecting among these to treat an individual patient. Further research is needed to establish a strategy for prioritizing, sequencing, and linking the available options.

Physical Activity

Modified from Pan-Canadian Guideline and NCCN Guideline for Survivorship

Several meta-analyses, systematic reviews, and randomized trials have demonstrated that initiating or maintaining adequate levels of physical activity can reduce cancer-related fatigue in post-treatment patients. For example, a recent meta-analysis of 27 exercise intervention trials conducted with patients after treatment completion found that exercise training significantly reduced fatigue, with a mean effect size of 0.38 (95% confidence interval [CI], 0.21 to 0.43).

Actively encourage all patients to engage in a moderate level of physical activity after cancer treatment (e.g., 150 minutes of moderate aerobic exercise, such as fast walking, cycling, or swimming, per week with an additional two to three sessions per week of strength training, such as weight lifting, unless contraindicated).

Walking programs are generally safe for most cancer survivors; the American College of Sports Medicine recommends that cancer survivors begin this type of program after consulting with their physician but without any formal exercise testing (such as a stress test).

Survivors at higher risk of injury (e.g., those living with neuropathy, cardiomyopathy, or other long-term effects of therapy other than comorbidities) should be referred to a physical therapist or exercise specialist. Breast cancer survivors with lymphedema should also consider meeting with an exercise specialist before initiating upper-body strength training.

Encourage survivors to make use of empirically based programs and local resources that are consistent with guideline recommendations. For patients with severe fatigue interfering with function, consider referral to a physical therapist or physiatrist.

Common barriers to physical activity in cancer survivors include physical and disease-related limitations (e.g., illness, pain, fatigue, weakness) as well as lack of time, lack of interest/motivation, lack of facilities, and lack of encouragement from family or friends. To overcome these barriers, survivors should be encouraged to avoid inactivity by, at the minimum, engaging in exercises such as walking or using a stationary bicycle or cycle ergometer, beginning at an easy pace and progressing gradually to moderate intensity. Counseling and motivational interviewing have also been shown to encourage exercise adherence.

Psychosocial Interventions

Modified from NCCN Guideline for Survivorship

Several meta-analyses, systematic reviews, and randomized trials have indicated that cognitive behavioral therapy/behavioral therapy can reduce fatigue in cancer survivors. For example, a cognitive behavioral intervention that targeted dysfunctional thoughts about fatigue, poor coping strategies, and dysregulated sleep and activity patterns in a mixed sample of fatigued cancer survivors led to significant improvements in fatigue that were sustained over long-term follow-up.

Several systematic reviews and randomized trials have suggested that psychoeducational/educational therapies may reduce fatigue in cancer survivors. For example, an Internet-based educational program that provided tailored information on cancer-related fatigue, physical activity, pain control, distress management, sleep hygiene, nutrition, and energy conservation led to significant improvements in fatigue in a mixed sample of fatigued cancer survivors.

Survivors should be referred to psychosocial service providers specializing in cancer and trained to deliver empirically based interventions. Psychosocial resources that address fatigue may also be available through the National Cancer Institute (http://www.cancer.gov External Web Site Policy), the American Cancer Society (http://www.cancer.org External Web Site Policy), LIVESTRONG (http://www.livestrong.org External Web Site Policy), the Cancer Support Community (http://www.cancersupportcommunity.org/ External Web Site Policy), CancerCare (http://www.cancercare.org External Web Site Policy), Cancer.Net (http://www.cancer.net External Web Site Policy), and the American Psychosocial Oncology Society (http://www.apossociety.org/survivors/helpline/ helpline.aspx External Web Site Policy).

Mind-Body Interventions

There is evidence from randomized trials that the following interventions may relieve fatigue in cancer survivors:

  • Mindfulness-based approaches
  • Yoga
  • Acupuncture

The following interventions may also offer some benefit; however, additional research, particularly in the post-treatment period, is needed:

  • Biofield therapies (touch therapy), massage, music therapy, relaxation, reiki, and qigong
  • Survivors should be referred to practitioners specializing in cancer and using protocols that have been empirically validated in cancer survivors.

Pharmacologic Interventions

Modified from NCCN Guideline for Cancer-Related Fatigue and NCCN Guideline for Survivorship

Evidence suggests that psychostimulants (e.g., methylphenidate) and other wakefulness agents (e.g., modafinil) can be effectively used to manage fatigue in patients with advanced disease or those receiving active treatment. However, there is limited evidence of their effectiveness in reducing fatigue in patients who are disease free after active treatment, outside of the treatment of obstructive sleep apnea.

Small pilot studies have evaluated the impact of supplements, such as ginseng and vitamin D, for cancer-related fatigue. However, there is no consistent evidence of their effectiveness.

Ongoing Monitoring and Follow-Up

Promote ongoing self-monitoring of fatigue levels, using a symptoms diary or other methods, because fatigue can be a late or long-term problem in post-treatment survivors.

Clinical Algorithm(s)

An algorithm titled "Screening and Assessment - Fatigue in Cancer Survivors" is provided in the original guideline document.

Disease/Condition(s)

Fatigue

Guideline Category

Counseling

Evaluation

Management

Screening

Clinical Specialty

Internal Medicine

Oncology

Radiation Oncology

Intended Users

Advanced Practice Nurses

Allied Health Personnel

Nurses

Patients

Physician Assistants

Physicians

Guideline Objective(s)

To present screening, assessment, and treatment approaches for the management of adult cancer survivors who are experiencing symptoms of fatigue after completion of primary treatment

Target Population

Cancer survivors diagnosed at age ≥18 years who have completed primary cancer treatment with curative intent and are in clinical remission off therapy as well as patients who are disease free and have transitioned to maintenance or adjuvant therapy (e.g., patients with breast cancer receiving hormonal therapy, patients with chronic myelogenous leukemia receiving tyrosine kinase inhibitors)

Interventions and Practices Considered

  1. Routine screening for fatigue
    • At least annually from the point of diagnosis onward
    • Quantitative or semiquantitative assessment
  2. History and physical
    • Evaluation of disease status
    • Assessment of treatable contributing factors
    • Referral as needed
  3. Laboratory evaluations as indicated
  4. Education and counseling
    • Education on normal vs. cancer-related fatigue, causes and contributing factors
    • Fatigue management advice
  5. Observation and re-evaluation on a regular basis
  6. Treatment
    • Management of contributing factors
    • Physical activity
    • Psychosocial interventions (e.g., cognitive behavioral therapy)
    • Mind-body interventions (e.g., yoga, acupuncture)
    • Pharmacologic interventions (e.g., psychostimulants)
  7. Promotion of ongoing self-monitoring

Major Outcomes Considered

  • Treatment efficacy
  • Quality of life

Methods Used to Collect/Select the Evidence

Hand-searches of Published Literature (Primary Sources)

Searches of Electronic Databases

Description of Methods Used to Collect/Select the Evidence

American Society of Clinical Oncology (ASCO) Updated Literature Search

Because the literature search included in the pan-Canadian guideline was only current to 2009, an additional search was undertaken. The MEDLINE and EMBASE databases were systematically searched by one reviewer from January 2009 to March 2013 using a combination of the following search terms: fatigue, cancer, survivor, post-treatment, late effects, and long-term effects. Reference lists of reviews were also extensively searched for studies on fatigue in the cancer survivor population. The located meta-analyses, systematic reviews, and randomized controlled trials were used as a supplementary evidence base for the recommendations and are cited where appropriate in the text.

Guideline Search and ASCO Panel Content Review

As mentioned, the adaptation process starts with a literature search to identify candidate guidelines for adaptation on a given topic. The systematic search of clinical practice guideline databases, guideline developer Web sites, and published health literature was conducted to identify clinical practice guidelines, systematic reviews, meta-analyses, and other guidance documents addressing the screening, assessment, and care of cancer-related fatigue (see the Data Supplement [see the "Availability of Companion Documents" field] for details of the search). On the basis of content review of the search yield, the ad hoc panel selected the pan-Canadian guideline on fatigue published in 2011, which is informed by recommendations from the Oncology Nursing Society and National Comprehensive Cancer Network (NCCN). The panel also considered two NCCN Guidelines that had been created or updated since 2009. These guidelines were selected because they were comprehensive and recently developed by multidisciplinary panels of experts.

Number of Source Documents

Not stated

Methods Used to Assess the Quality and Strength of the Evidence

Not stated

Rating Scheme for the Strength of the Evidence

Not applicable

Methods Used to Analyze the Evidence

Review of Published Meta-Analyses

Systematic Review

Description of the Methods Used to Analyze the Evidence

From the identified guidelines and reviews, the pan-Canadian guideline on screening, assessment, and care of cancer-related fatigue in adults with cancer was singled out and underwent an expedited review by two content experts, who suggested that the guideline be accepted with modifications. After a second review, the ASCO panel suggested that the more recent NCCN Guideline for Cancer-Related Fatigue and NCCN Guideline for Survivorship also be included in the adaptation. A methodologic review of the three guidelines was completed by two ASCO staff members using the Rigour of Development subscale of the AGREE II (Appraisal of Guidelines for Research and Evaluation II) instrument (www.agreetrust.org External Web Site Policy). The Rigour of Development subscale consists of seven items that assess the quality of processes used to gather and synthesize relevant data and methods used to formulate guideline recommendations (see the Data Supplement [see the "Availability of Companion Documents" field]; detailed results of scoring for this guideline are available on request to guidelines@asco.org). Briefly, the pan-Canadian guideline received a score of 86.5%, the NCCN Guideline for Cancer-Related Fatigue received a score of 47%, and the NCCN Guideline for Survivorship received a score of 44%.

Methods Used to Formulate the Recommendations

Expert Consensus

Description of Methods Used to Formulate the Recommendations

The guideline adaptation was informed by the ADAPTE methodology, which was used as an alternative to de novo guideline development for this guideline. Adaptation of guidelines is considered by the American Society of Clinical Oncology (ASCO) in selected circumstances, when one or more quality guidelines from other organizations already exist on the same topic. The objective of the ADAPTE process is to take advantage of existing guidelines to enhance efficient production, reduce duplication, and promote the local uptake of quality guideline recommendations.

The American Society of Clinical Oncology (ASCO) adaptation process begins with a literature search to identify candidate guidelines for adaptation. Adapted guideline manuscripts are reviewed and approved by the ASCO Clinical Practice Guidelines Committee (CPGC). The review includes two parts: methodologic review and content review. The methodologic review is completed by a member of the CPGC Methodology Subcommittee and/or by ASCO senior guideline staff. The content review is completed by an ad hoc panel (see Appendix Table A1 in the original guideline document) with guidance from an advisory group (see Appendix Table A2 in the original guideline document), convened by ASCO that includes multidisciplinary representation. Additional details on the methods used for the development of this guideline are reported in an online Methodology Supplement (see the "Availability of Companion Documents" field).

The Panel is led by two Co-Chairs who have the primary responsibility for the development and timely completion of the guideline adaptation. Recommendations from the source guidelines are extracted into a summary matrix (see Appendix II of the Methodology Supplement [see the "Availability of Companion Documents" field]).

Rating Scheme for the Strength of the Recommendations

Not applicable

Cost Analysis

A formal cost analysis was not performed and published cost analyses were not reviewed.

Method of Guideline Validation

Internal Peer Review

Description of Method of Guideline Validation

All members of the Expert Panel participated in the preparation of the draft guideline document, which was then disseminated for external review and submitted to the Journal of Clinical Oncology (JCO) for peer review and publication. All ASCO guidelines are reviewed and approved by the ASCO Clinical Practice Guideline Committee prior to publication.

The Clinical Practice Guideline Committee approved this guideline update on July 29, 2013.

Type of Evidence Supporting the Recommendations

The type of evidence supporting the recommendations is not specifically stated.

Potential Benefits

Appropriate screening, assessment and management of fatigue in adult cancer survivors

Potential Harms

Not stated

Qualifying Statements

The information contained in the guideline adaptation, including but not limited to clinical practice guidelines and other guidance, is based on the best available evidence at the time of creation and is provided by American Society of Clinical Oncology (ASCO) to assist providers in clinical decision making. The information should not be relied on as being complete or accurate, nor should it be considered as inclusive of all proper treatments or methods of care or as a statement of the standard of care. With the rapid development of scientific knowledge, new evidence may emerge between the time information is developed and when it is published or read. The information is not continually updated and may not reflect the most recent evidence. The information addresses only the topics specifically identified herein and is not applicable to other interventions, diseases, or stages of diseases. This information does not mandate any particular product or course of medical treatment. Furthermore, the information is not intended to substitute for the independent professional judgment of the treating provider, because the information does not account for individual variation among patients. Recommendations reflect high, moderate, or low confidence that the recommendation reflects the net effect of a given course of action. The use of words like must, must not, should, and should not indicate that a course of action is recommended or not recommended for either most or many patients, but there is latitude for the treating physician to select other courses of action in certain cases. In all cases, the selected course of action should be considered by the treating provider in the context of treating the individual patient. Use of the information is voluntary. ASCO provides this information on an as is basis and makes no warranty, express or implied, regarding the information. ASCO specifically disclaims any warranties of merchantability or fitness for a particular use or purpose. ASCO assumes no responsibility for any injury or damage to persons or property arising out of or related to any use of this information or for any errors or omissions.

Description of Implementation Strategy

For information on the American Society for Clinical Oncology (ASCO) implementation strategy, please see the ASCO Web site External Web Site Policy.

Implementation Tools

Clinical Algorithm

Patient Resources

Quick Reference Guides/Physician Guides

Slide Presentation

For information about availability, see the Availability of Companion Documents and Patient Resources fields below.

IOM Care Need

Getting Better

Living with Illness

Staying Healthy

IOM Domain

Effectiveness

Patient-centeredness

Bibliographic Source(s)

Bower JE, Bak K, Berger A, Breitbart W, Escalante CP, Ganz PA, Schnipper HH, Lacchetti C, Ligibel JA, Lyman GH, Ogaily MS, Pirl WF, Jacobsen PB. Screening, assessment, and management of fatigue in adult survivors of cancer: an American Society of Clinical Oncology clinical practice guideline adaptation. J Clin Oncol. 2014 Jun 10;32(17):1840-50. [65 references] PubMed External Web Site Policy

Adaptation

The guidelines were adapted from the following sources:

  • Pan-Canadian Guideline on Screening, Assessment, and Care of Cancer-Related Fatigue in Adults with Cancer
  • National Comprehensive Cancer Network (NCCN) Clinical Practice Guidelines In Oncology (NCCN Guidelines) for Cancer-Related Fatigue
  • NCCN Guidelines for Survivorship

Date Released

2014 June 10

Guideline Developer(s)

American Society of Clinical Oncology - Medical Specialty Society

Source(s) of Funding

American Society of Clinical Oncology (ASCO)

Guideline Committee

American Society of Clinical Oncology (ASCO) Clinical Practice Guidelines Committee

Composition of Group That Authored the Guideline

Committee Members: Julienne E. Bower, PhD (Co-chair), Departments of Psychology and Psychiatry/Biobehavioral Sciences, University of California at Los Angeles, Los Angeles, CA; Paul B. Jacobsen, PhD (Co-chair), H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL; Ann Berger, MSN, MD, National Institutes of Health Clinical Center, Bethesda, MD; William Breitbart, MD, Memorial Sloan-Kettering Cancer Center, New York, NY; Carmelita P. Escalante, MD, University of Texas MD Anderson Cancer Center, Houston, TX; Patricia A. Ganz, MD, Schools of Medicine and Public Health, University of California at Los Angeles, Los Angeles, CA; Hester Hill Schnipper, LICSW, BCD, Beth Israel Deaconess Medical Center, Boston, MA; Jennifer A. Ligibel, MD, Dana-Farber Cancer Institute, Boston, MA; Gary H. Lyman, MD, MPH, FASCO, FRCP, Duke University and Duke Cancer Institute, Durham, NC; Mohammed S. Ogaily, MD, FACP, Oakwood Center for Hematology and Oncology–Downriver, Brownstown, MI; William F. Pirl, MD, Massachusetts General Hospital, Boston, MA; Kate Bak, MSc, American Society of Clinical Oncology (ASCO), Alexandria, VA; Christina Lacchetti, MHSc, ASCO, Alexandria, VA

Financial Disclosures/Conflicts of Interest

The expert panel was assembled in accordance with the American Society of Clinical Oncology (ASCO) Conflicts of Interest Management Procedures for Clinical Practice Guidelines (summarized at http://www.asco.org/guidelinescoi External Web Site Policy). Members of the panel completed the ASCO disclosure form, which requires disclosure of financial and other interests that are relevant to the subject matter of the guideline, including relationships with commercial entities that are reasonably likely to experience direct regulatory or commercial impact as the result of promulgation of the guideline. Categories for disclosure include employment relationships, consulting arrangements, stock ownership, honoraria, research funding, and expert testimony. In accordance with these procedures, the majority of the members of the panel did not disclose any such relationships.

Authors' Disclosures of Potential Conflicts of Interest

Although all authors completed the disclosure declaration, the following author(s) and/or an author's immediate family member(s) indicated a financial or other interest that is relevant to the subject matter under consideration in this article. Certain relationships marked with a "U" are those for which no compensation was received; those relationships marked with a "C" were compensated. For a detailed description of the disclosure categories, or for more information about ASCO's conflict of interest policy, please refer to the Author Disclosure Declaration and the Disclosures of Potential Conflicts of Interest section in Information for Contributors.

Employment or Leadership Position: None Consultant or Advisory Role: None Stock Ownership: None Honoraria: None Research Funding: Carmelita P. Escalante, Pfizer; Patricia A. Ganz, Amgen; Gary Lyman, Amgen; Paul Jacobsen, Pfizer Expert Testimony: None Patents, Royalties, and Licenses: None Other Remuneration: None

Guideline Status

This is the current release of the guideline.

Guideline Availability

Availability of Companion Documents

The following are available:

  • Screening, assessment, and management of fatigue in adult survivors of cancer: an American Society of Clinical Oncology clinical practice guideline adaptation. Methodology supplement. Alexandria (VA): American Society of Clinical Oncology; 2014. 13 p. Available from the American Society of Clinical Oncology (ASCO) Web site External Web Site Policy.
  • Screening, assessment, and management of fatigue in adult survivors of cancer: an American Society of Clinical Oncology clinical practice guideline adaptation. Slide set. Alexandria (VA): American Society of Clinical Oncology; 2014. 21 p. Available in from the ASCO Web site External Web Site Policy.
  • Screening, assessment, and management of fatigue in adult survivors of cancer: an American Society of Clinical Oncology clinical practice guideline adaptation. Summary of recommendations. Alexandria (VA): American Society of Clinical Oncology; 2014. 42 p. Available from the ASCO Web site External Web Site Policy.

Patient Resources

The following is available:

  • Fatigue. Patient information. [internet]. Alexandria (VA): American Society of Clinical Oncology; 2014 Apr 20. Available from the Cancer.Net Web site External Web Site Policy.

Please note: This patient information is intended to provide health professionals with information to share with their patients to help them better understand their health and their diagnosed disorders. By providing access to this patient information, it is not the intention of NGC to provide specific medical advice for particular patients. Rather we urge patients and their representatives to review this material and then to consult with a licensed health professional for evaluation of treatment options suitable for them as well as for diagnosis and answers to their personal medical questions. This patient information has been derived and prepared from a guideline for health care professionals included on NGC by the authors or publishers of that original guideline. The patient information is not reviewed by NGC to establish whether or not it accurately reflects the original guideline's content.

NGC Status

This NGC summary was completed by ECRI Institute on August 21, 2014.

Copyright Statement

This summary is based on the original guideline document, which is subject to the American Society of Clinical Oncology's copyright restrictions.

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