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ASCO Patient Guide: White Blood Cell Growth Factors
Introduction
Special Announcement on Leukine (sargramostim) (Updated January 25, 2008): Patients and doctors need to be aware that there has been a voluntary market suspension of the current liquid formulation of this drug because of an upward trend in spontaneous reports of adverse reactions, including syncope (fainting). The lyophilized (freeze-dried) form of the drug is not affected. See the U.S. Food and Drug Administration (FDA) website (http://www.fda.gov/medwatch/safety/2008/safety08.htm#Leukine) for more information.
To help doctors give their patients the best possible care, ASCO asks its medical experts to develop recommendations for specific areas of cancer care. ASCO recently updated a clinical practice guideline about the use of white blood cell growth factors. This patient guide is based on ASCO's recommendations.
As you read this guide, please keep in mind that every person treated for cancer is different. These recommendations are not meant to replace your or your doctors' judgment. The final decisions you and your doctors make will be based on your individual circumstances.
Information in ASCO's patient education materials is not intended as medical advice or as a substitute for the treating doctor's own professional judgment; nor does it imply ASCO endorsement of any product or company.
Last Updated: February 12, 2008
Background
White blood cell growth factors, also known as hematopoietic (blood-forming) colony-stimulating factors (CSFs), are proteins that help the body produce white blood cells. White blood cells help fight infection and can be destroyed during some types of cancer treatment. Having low numbers of white blood cells is called neutropenia, and patients with neutropenia are more likely to develop infections. Neutropenia may occur with or without a fever. Febrile neutropenia (neutropenia with a fever) may be a sign that the patient has developed an infection and requires antibiotics and hospitalization. Because of the risk of complications from febrile neutropenia, the panel of experts that developed this guideline agreed that febrile neutropenia should be avoided, if possible.
CSFs are supportive medications, which means that they are not intended to treat the cancer, but rather to prevent patients from developing side effects of cancer treatment, such as infections. CSFs are given as shots, usually 24 hours after a chemotherapy treatment, and include filgrastim (Neupogen), sargramostim (Leukine), and pegfilgrastim (Neulasta). These medications are made in the laboratory and are similar to those naturally produced by the body.
Last Updated: February 12, 2008
Recommendations
Like other medications, CSFs have both risks and benefits. Treatment with CSFs can lower the risk that a patient will be hospitalized because of febrile neutropenia, but CSFs also cause aches in the bones, low-grade fever, malaise (feeling unwell), and involve multiple shots to deliver the medication. Your doctor can help determine your need for a CSF based on your risk of developing febrile neutropenia. This risk depends on the cancer diagnosis, cancer treatment you receive (such as dose and schedule of chemotherapy), and your medical history, age, and overall health.
The general recommendations for the use of CSFs include the following:
- The first option should be to find an effective chemotherapy regimen that doesn't require the use of CSFs, if possible.
- Patients should receive CSFs when the risk of developing febrile neutropenia is about 20% or greater, based on the patient's cancer type, treatment plan, age, medical history, and other factors. Some of these situations include:
- Patients receiving dose dense chemotherapy (treatment given more often, such as every two weeks instead of every three weeks)
- Patients older than 65 with lymphoma who are being treated with curative chemotherapy
- Patients with health conditions that place them at higher risk of developing complications from neutropenia
There are circumstances where treatment with a CSF is not recommended. Please talk with your doctor for more information. Some of these situations include:
- Patients receiving chemotherapy and radiation therapy at the same time
- Patients with neutropenia and no fever
Patients receiving chemotherapy with a risk of febrile neutropenia that is less than 20%, which includes most chemotherapy regimens.
Last Updated: February 12, 2008
What This Means for Patients
CSFs are supportive medications that can help prevent hospitalization from infection after some types of cancer treatment. These medications are not necessary for everyone undergoing cancer treatment, just those patients who are at a higher risk of developing febrile neutropenia. Most chemotherapy programs are not associated with a high risk of developing febrile neutropenia. Your doctor can help you understand CSF treatment and how to manage the accompanying side effects.
Last Updated: February 12, 2008
Questions to Ask the Doctor
Patients are encouraged to ask their doctors the following questions about CSFs:
- Do you recommend adding a CSF to my treatment plan? Why or why not?
- Is there an effective chemotherapy regimen for my type of cancer that might not require the use of CSFs?
- Is my risk of developing febrile neutropenia with this treatment more than 20%?
- What are the risks and benefits of CSF treatment?
- Where can I learn more about CSFs and my cancer treatment?
Patients receiving CSFs may want to ask the following questions:
- What can be done to treat bony aches and joint pain?
- How long does this pain last?
- How can I tell if the bone pain is from CSF treatment and not from the spread of cancer?
- What do I do if I have bone pain with a fever?
Last Updated: February 12, 2008
Resources
Cancer.Net (www.cancer.net) is the comprehensive, oncologist-approved cancer information website from ASCO. Visit Cancer.Net to find guides on more than 90 types of cancer, clinical trials information, coping resources, information on managing side effects, a live online chat series, medical illustrations, cancer information in Spanish, the latest cancer news, and much more. For more information about ASCO's patient information resources, call toll free 888-651-3038.
American Cancer Society
1599 Clifton Rd., NE
Atlanta, GA 30329-4251
Toll Free: 800-ACS-2345 (800-227-2345)
TTY: 866-288-4327
Tel: 404-320-3333
www.cancer.org
National Cancer Institute
Public Inquiries Office
Building 31, Rm. 10A31
31 Center Dr., MSC 2580
Bethesda, MD 20892-2580
Toll Free: 800-4-CANCER (800-422-6237)
TTY: 800-332-8615
Tel: 301-435-3848
Fax: 301-402-0894
www.cancer.gov
National Comprehensive Cancer Network
500 Old York Rd., Ste. 250
Jenkintown, PA 19046
Toll Free: 888-909-NCCN (888-909-6226)
Tel: 215-690-0300
Fax: 215-690-0280
www.nccn.org
© Copyright 2006 American Society of Clinical Oncology. For permissions information, contact permissions@asco.org.
Last Updated: February 12, 2008
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