June 2008, Supplement to Volume 12, Number 3

 

Article

Peripheral Neuropathy Associated With Novel Therapies in Patients With Multiple Myeloma: Consensus Statement of the IMF Nurse Leadership Board

Joseph D. Tariman, RN, MN, ARNP-BC, OCN®, Ginger Love, RN, OCN®, Emily McCullagh, RN, NP-C, OCN®, Stacey Sandifer, RN, BSN, and the IMF Nurse Leadership Board

 

 

The novel therapies thalidomide and bortezomib can cause peripheral neuropathy, a challenging adverse event that can affect quality of life and compromise optimal treatment for patients with multiple myeloma. At baseline, patients should be evaluated for signs and symptoms of peripheral neuropathy with a neurotoxicity assessment tool and educated about the symptoms and the importance of reporting them. Signs, symptoms, and the ability to perform activities of daily living should be evaluated regularly so that appropriate interventions can be employed if necessary. Specific management strategies for peripheral neuropathy are based on the grade of severity and on signs and symptoms; strategies include dose and schedule modifications, pharmacologic interventions, nonpharmacologic approaches, and patient education.

 

At a Glance

 

·         The novel agents thalidomide and bortezomib can cause peripheral neuropathy, a challenging adverse event that can affect quality of life and compromise optimal treatment for patients with multiple myeloma.

·         Patients should be evaluated for signs and symptoms of peripheral neuropathy with a neurotoxicity assessment tool at baseline and periodically reassessed during treatment.

·         Management strategies include dose and schedule modifications, pharmacologic interventions, nonpharmacologic approaches, and patient education.

 

Novel therapies for multiple myeloma include the immunomodulatory drugs lenalidomide (Revlimid®, Celgene Corporation) and thalidomide (Thalomid®, Celgene Corporation) and the proteasome inhibitor bortezomib (Velcade®, Millennium Pharmaceuticals, Inc.). The benefits of the agents for patients with multiple myeloma include increased response rates and longer survival times compared with conventional chemotherapy (Celgene Corporation, 2007a, 2007b; Ghobrial et al., 2007; Manochakian, Miller, & Chanan-Khan, 2007; Millennium Pharmaceuticals, Inc., 2007; Rajkumar et al., 2005; Richardson & Anderson, 2006; Richardson, Hideshima, Mitsiades, & Anderson, 2007). Two of the agents, thalidomide and bortezomib, are associated with the development of peripheral neuropathy, a side effect that can seriously affect quality of life and interfere with optimal treatment. Although rare, peripheral neuropathy can be life threatening, which can lead to serious medical conditions such as irregular heartbeat, hypotension, and shortness of breath (Armstrong, Almadrones, & Gilbert, 2005; Marrs & Newton, 2003; Shah, et al., 2004; Singhal & Mehta, 2001; Sweeney, 2002; Wickham, 2007).

 

The International Myeloma Foundation’s Nurse Leadership Board, in recognition of the need for specific recommendations on managing key side effects of novel antimyeloma agents, developed this consensus statement for the management of peripheral neuropathy associated with thalidomide and bortezomib (Bertolotti et al., 2007, 2008). It was developed for use by healthcare providers in any type of medical setting. The recommendations outlined in this article, developed through evidence-based reviews and the consensus of the Nurse Leadership Board, are applicable for managing peripheral neuropathy.

 

Issue Statement

 

Peripheral neuropathy describes damage to the peripheral nervous system. Any injury, inflammation, or degeneration of peripheral nerve fibers can lead to peripheral neuropathy. The impaired function and symptoms depend on the type of nerves affected, which can be motor, sensory, or autonomic nerve fibers. Peripheral neuropathy can manifest as temporary numbness, tingling, paresthesias (pricking sensations), sensitivity to touch, or muscle weakness. Peripheral neuropathy also can cause more severe symptoms, such as burning pain, muscle wasting, paralysis, or organ dysfunction, and may adversely affect digestion, maintenance of blood pressure, and other bodily functions; in extreme cases, it can affect breathing and lead to organ failure (National Institute of Neurological Disorders and Stroke [NINDS], 2007). The symptoms are related to possible damage to the autonomic nerves that control heart rate, blood pressure, and digestion, among other functions. Additional investigation is warranted to clarify the possible association of autonomic neuropathy with bortezomib (Orlowski et al., 2002; Shah et al., 2004) and thalidomide (Fahdi et al., 2004; Singhal & Mehta, 2001). Symptoms such as bradycardia or irregular heartbeat while on thalidomide or hypotension while on bortezomib therapy may indicate autonomic chemotherapy-induced peripheral neuropathy.

 

Peripheral neuropathy associated with multiple myeloma is a well-known entity (Dispenzieri & Kyle, 2005). The incidence of clinically apparent peripheral neuropathy at diagnosis in patients with multiple myeloma has been reported to be less than 1%, 2%, or as high as 13% (Dispenzieri & Kyle, 2005; Plasmati et al., 2007; Ropper & Gorson, 1998). When comprehensive neurologic examination with electrophysiologic testing was performed in previously untreated patients with multiple myeloma, small-fiber neuropathy was found in 52% and large-fiber axonal neuropathy occurred in 9% of patients; the rate of electrophysiologic evidence of peripheral neuropathy has been reported as 39% (Anderson et al., 2006; Dispenzieri & Kyle). Peripheral neuropathy is a late complication in most patients with multiple myeloma. More than 80% of patients with multiple myeloma in the phase II trial of bortezomib who had received multiple prior therapies, but not prior bortezomib, had baseline peripheral neuropathy by neurologic examination (Richardson, Briemberg, et al., 2006).

 

Peripheral neuropathy in patients with multiple myeloma is usually axonal, mixed sensorimotor; symptoms are symmetrical, distal, and progressive. The exact mechanism of the neuropathy in newly diagnosed myeloma is unknown but may be related to the paraprotein, weight loss, metabolic, or toxic factors associated with the malignancy (Tariman, 2005). Amyloidosis frequently is present in patients with multiple myeloma who have peripheral neuropathy, and deposition of amyloid damages nerves (Dispenzieri & Kyle, 2005; Ropper & Gorson, 1998).

 

Since the late 1990s, peripheral neuropathy has emerged as one of the most challenging and dose-limiting side effects associated with novel therapies for multiple myeloma, such as thalidomide and bortezomib. The incidence of therapy-induced peripheral sensory and motor neuropathy reported in the registration trial in patients newly diagnosed with multiple myeloma was 54% for all grades of severity. Thalidomide-associated peripheral neuropathy generally occurs following chronic therapy but may result from relatively short-term therapy and may be irreversible (Celgene Corporation, 2007b). In one group of patients, the severity of thalidomide-associated neuropathy appeared to be related to the duration of disease prior to treatment rather than the cumulative or daily dose of the drug (Tosi et al., 2005). Other investigators believe that the severity of peripheral neuropathy is related to higher cumulative dose of thalidomide and treatment duration (Mileshkin et al., 2006).

 

The incidence of peripheral neuropathy in patients receiving single-agent bortezomib in the phase III registration trial who had received other prior therapies was 36% for all grades of severity (Millennium Pharmaceuticals, Inc., 2007). Bortezomib-associated peripheral neuropathy was found to be partially to fully reversible in most patients after dose modification or treatment discontinuation, but resolution of neuropathy could take as long as 48 weeks (Millennium Pharmaceuticals, Inc.; Richardson, Briemberg, et al., 2006, 2007).

 

To date, the reported incidence of lenalidomide-associated peripheral neuropathy is low (2%–3%) (Celgene Corporation, 2007a; Richardson, Blood, et al., 2006; Weber et al., 2007).

 

All three novel therapies have been available for a relatively short time. How long-term exposures and cumulative doses may correlate with the development or reversibility of peripheral neuropathy for patients on long-term or maintenance therapy is unclear.

 

The Nurse Leadership Board’s Position on Peripheral Neuropathy

 

Peripheral neuropathy has a significant impact on quality of life, including the physical, social, and psychological effects of unrelieved neuropathic pain.

 

Healthcare professionals, primarily nurses, should address peripheral neuropathy associated with thalidomide and bortezomib in a timely manner. Patients should be counseled and evaluated regularly for signs and symptoms of peripheral neuropathy.

 

Patients’ physical examination should include neurologic assessment with a neurotoxicity assessment tool (described later) at baseline, at the onset of worsening neuropathy, and at each consecutive encounter when clinically indicated, particularly while on therapy with thalidomide or bortezomib.

 

Patients should be examined at monthly intervals for the first three months of thalidomide therapy to detect early signs of neuropathy (e.g., numbness, tingling, pain in the hands and feet) and should be evaluated periodically thereafter during treatment. Electrophysiologic testing to measure sensory nerve action potential amplitudes at baseline and thereafter at six-month intervals should be considered for detection of asymptomatic neuropathy, which, if present, requires immediate discontinuation of thalidomide therapy (Celgene Corporation, 2007b).

 

Clinicians are responsible for integrating patient education concerning side effects, particularly early reporting of peripheral neuropathy, to avoid irreversible peripheral nerve damage.

Nurses should evaluate patients’ abilities to perform activities of daily living (ADLs) (e.g., dressing and feeding themselves) and instrumental activities of daily living (IADLs), defined as secondary activities related to independent living and safety issues at home (e.g., avoiding injuries, falls, and burns that can result from decreased ability to sense objects in the environment or their temperatures). Nurses should employ interventions such as home healthcare services in patients with peripheral neuropathy that interferes with ADLs or IADLs.

 

Interdisciplinary management of peripheral neuropathy based on available resources (e.g., pain service, neurology service, psychosocial service, physical therapy) is highly encouraged.

Nurses and cancer treatment facilities should adopt policies that facilitate interdisciplinary trials addressing neuropathy management.

 

Nurses should use adult verbal or nonverbal pain scales to assess neuropathic pain and follow pain management guidelines: the American Cancer Society (ACS) Pain Management Pocket Tool (ACS, 2005), the National Comprehensive Cancer Network (NCCN) Clinical Practice Guidelines in Oncology™ for adult cancer pain (NCCN, 2007), and the NCCN and ACS cancer pain treatment guidelines for patients (NCCN & ACS, 2005).

 

Adequate management of peripheral neuropathy will increase mobility and promote patient safety, increase therapy adherence, increase self-esteem, prevent unnecessary pain and discomfort, prevent muscle wasting, and improve quality of life (Colson, Doss, Swift, Tariman, & Thomas, 2004; Doss, 2006; Lonial, 2007; Tariman, 2005).

 

Toxicity Tools for Grading and Management

 

The severity of neuropathy, including adverse events related to neuropathic pain, can be quantified with the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE). The NCI CTCAE are used for identifying treatment-related adverse events to facilitate the evaluation of new cancer therapies, treatment modalities, and supportive measures. For most adverse events, the NCI CTCAE define grades 1–5 using unique clinical descriptions; each grade is assigned a severity: grade 1 is mild, grade 2 is moderate, grade 3 is severe, grade 4 is life threatening or disabling, and grade 5 defines death related to the adverse event. The grades may be used for monitoring neuropathy and determining the need for intervention. Under the NCI CTCAE version 3.0 category of neurology, neuropathic pain is graded as pain in the pain category. Table 1 defines the NCI CTCAE version 3.0 pain toxicity grades 1–4. Other types of neuropathies may be associated with the novel therapies, including motor and sensory neuropathies. They are graded in the CTCAE neurology category. In the pain category, no grade 5 toxicity (death) exists; however, both sensory and motor neuropathy can result in death (NCI, 2006).

 

Neurotoxicity Assessment Tool

 

Figure 1 shows a neurotoxicity assessment tool that can be used by healthcare providers to assess peripheral neuropathy in their patients, including those with multiple myeloma. Healthcare providers can discuss with patients their responses to the questions in the assessment tool to determine the CTCAE grade of any neurotoxicities they are experiencing, although the assessment scores do not correlate with CTCAE toxicity grades (Cavaletti et al., 2003; Cella et al., 1993; Cornblath et al., 1999; NCI, 2006).

 

Management of Peripheral Neuropathy

 

All patients should receive a baseline assessment with the neurotoxicity assessment tool prior to initiating therapy with thalidomide or bortezomib. Although patients with multiple myeloma can present with neuropathy at diagnosis, the neuropathy can be the result of other comorbidities, such as diabetes, amyloidosis, or HIV infection (NINDS, 2007). At baseline, patients should receive education about the symptoms of peripheral neuropathy and the importance of reporting the symptoms to their healthcare providers.

 

The following supplements, based on anecdotal evidence at the Dana-Farber Cancer Institute, also are recommended: B-complex vitamins, including B1, B6, and B12 (at least 400 mcg); and folic acid 1 mg daily (Colson et al., 2004). Further investigation is warranted to determine the efficacy of the supplements.

 

Specific recommendations for the management of peripheral neuropathy, if and when it occurs, are based on the grade of severity and the associated signs and symptoms. Table 2 describes management strategies for patients taking thalidomide, and Table 3 describes management strategies for patients taking bortezomib. The strategies include recommendations for dose and schedule modifications, pharmacologic interventions, nonpharmacologic approaches, and education. Painful neuropathy is not as common with thalidomide as with bortezomib, so the pain management strategies are less likely to be needed for patients taking thalidomide.

 

Patients receiving thalidomide should be examined at monthly intervals for the first three months of therapy to detect early signs of neuropathy (e.g., numbness, tingling, pain in the hands and feet) and should be evaluated periodically thereafter during treatment. Electrophysiologic testing to measure sensory nerve action potential amplitudes at baseline and thereafter at six-month intervals should be considered for detection of asymptomatic neuropathy. If asymptomatic neuropathy is present, thalidomide should be discontinued immediately and reinitiated only if neuropathy returns to baseline status. Medications known to be associated with neuropathy, such as cisplatin and vincristine, should be used with caution or avoided if possible in patients receiving thalidomide (Celgene Corporation, 2007b).

 

Conclusions

 

Patients with multiple myeloma are at risk for developing peripheral neuropathy from their disease, its treatment, and comorbid conditions. In addition to thalidomide and bortezomib, many conventional chemotherapy agents that patients with multiple myeloma may receive can cause peripheral neuropathy. Therefore, healthcare professionals must monitor patients closely for the adverse effect so that patient care and treatment can be managed effectively. This will result in more effective treatment and better quality of life (Lonial, 2007). The Oncology Nursing Society position on cancer pain management states that all patients with cancer have a right to pain prevention and management and that all healthcare professionals are accountable for effective pain management (Oncology Nursing Society, 2004). The recommendations presented in this article will help achieve those goals.

 

The authors gratefully acknowledge Brian G.M. Durie, MD, and Robert Kyle, MD, for critical review of the manuscript and Lynne Lederman, PhD, medical writer for the International Myeloma Foundation, for assistance in preparation of the manuscript.

 

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Weber, D.M., Chen, C., Niesvizky, R., Wang, M., Belch, A., Stadtmauer, E.A., et al. (2007). Lenalidomide plus dexamethasone for relapsed multiple myeloma in North America. New England Journal of Medicine, 357(21), 2133–2142. [CrossRef]

 

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Joseph D. Tariman, RN, MN, ARNP-BC, OCN®, is a predoctoral fellow in the Biobehavioral Nursing and Health Systems Department in the School of Nursing at the University of Washington in Seattle; Ginger Love, RN, OCN®, is a clinical nurse coordinator at University Hematology Oncology in Cincinnati, OH; Emily McCullagh, RN, NP-C, OCN®, is an autologous transplant coordinator at Memorial Sloan-Kettering Cancer Center in New York, NY; and Stacey Sandifer, RN, BSN, is a staff RN at the Cancer Centers of the Carolinas in Greenville, SC. Tariman is a member of the speakers bureau for Millennium Pharmaceuticals, Inc. Love is a member of the speakers bureaus for Celgene Corporation and Millennium Pharmaceuticals, Inc. Mention of specific products and opinions related to those products do not indicate or imply endorsement by the Clinical Journal of Oncology Nursing or the Oncology Nursing Society. (Submitted October 2008. Accepted for publication January 5, 2008.)

 

Author Contact: Joseph D. Tariman, RN, MN, ARNP-BC, OCN®, can be reached at jtariman@u.washington.edu, with copy to editor at CJONEditor@ons.org

 

Digital Object Identifier:10.1188/08.CJON.S1.29-35

 

Patient Education Sheet: Preventing Peripheral Neuropathy From Novel Agents for Multiple Myeloma

 

Key Points

 

Peripheral neuropathy is a change in feeling in the arms, hands, fingers, legs, feet, toes, or other body parts. It can be a symptom of multiple myeloma or related to the use of medications to treat myeloma, such as novel therapies thalidomide and bortezomib. Managing peripheral neuropathy can reduce pain and other symptoms and can allow you to receive the best treatment for your myeloma. Your healthcare provider may change your dose or medication schedule to help manage your symptoms.

 

Symptoms of peripheral neuropathy

 

You may have the following symptoms in toes and feet, fingers and hands, or lips.

•       Numbness

•       Tingling

•       Burning pain

•       Muscle weakness

•       Sensitivity to touch

•       Prickling sensations

•       Sensation of cold in feet

 

Always report symptoms early to your healthcare team.

 

You may have an examination before treatment and at various times during treatment to see whether you have any symptoms of neuropathy. It is important to know when neuropathy affects your daily activities.

 

Two types of neuropathies exist: sensory and motor. The symptoms you should monitor and report to your healthcare provider are as follows.

•       Sensory

–      Tingling, numbness, or pain in your hands or feet

–      Trouble hearing; ringing or buzzing in your ears

–      Weakness all over

•       Motor

–      Trouble fastening buttons

–          Difficulty opening jars or feeling the shape of small
                  objects in your hand

–      Trouble walking

 

Managing the symptoms

 

The following suggestions may help you with symptoms of peripheral neuropathy. Always check with your healthcare provider before taking new medications.

•       Massage the affected area with cocoa butter.

•       Take B-complex vitamins.

•       Take folic acid supplements.

•       Take amino acid supplements.

 

If symptoms become more severe, your healthcare provider may recommend the following.

•       Pain medication or other medication for nerve pain relief

•       Stopping treatment for a period of time

•       Lowering the dose of treatment

•       Physical therapy

 

Taking care of peripheral neuropathy symptoms will allow you to move more easily and safely, carry out your daily activities, and prevent unnecessary pain and discomfort.

 

Note. For more information, please contact the International Myeloma Foundation (1-800-452-CURE; www.myeloma.org). The foundation offers the Myeloma ManagerTM Personal Care AssistantTM computer program to help patients and healthcare providers keep track of information and treatments. Visit http://manager.myeloma.org to download the free software.

 

Note. Patient education sheets were developed in June 2008 based on the International Myeloma Foundation Nurse Leadership Board’s consensus guidelines. They may be reproduced for noncommercial use.