Information About Hematologic Risks Described in the Prescribing Information for Infliximab
Through February 2004, approximately 510,000
patients had been exposed to infliximab. At that time, the reporting
rate of total hematologic events for infliximab would have been considered
uncommon according to International Conference on Harmonisation guidelines,
which defines uncommon as
Because postmarketing events are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to infliximab exposure. It should also be noted that postmarketing reports do not always provide complete information as to other confounding factors for hematologic adverse events.
In August 2004, a warning regarding the risk of hematologic adverse events was added to the infliximab package insert, and a “Dear Health Care Professional” letter was mailed to health care providers.5481
Hematologic events reported in the prescribing information data are highlighted in this section. These events are located under the "Warnings" and "Adverse Reactions" sections of the infliximab prescribing information presented below.
Warnings — Infliximab
Hematologic Events
Cases of leukopenia, neutropenia, thrombocytopenia, and pancytopenia, some with a fatal outcome, have been reported in patients receiving REMICADE. The causal relationship to REMICADE therapy remains unclear. Although no high-risk group(s) has been identified, caution should be exercised in patients being treated with REMICADE who have ongoing or a history of significant hematologic abnormalities. All patients should be advised to seek immediate medical attention if they develop signs and symptoms suggestive of blood dyscrasias or infection (e.g., persistent fever) while on REMICADE. Discontinuation of REMICADE therapy should be considered in patients who develop significant hematologic abnormalities.3204
Drug Interactions
Concurrent administration of etanercept (another TNFα-blocking agent) and anakinra (an interleukin-1 receptor antagonist) has been associated with an increased risk of serious infections, and increased risk of neutropenia and no additional benefit compared to these medicinal products alone. Other TNFα-blocking agents (including REMICADE) used in combination with anakinra may also result in similar toxicities.3204
Hematologic Adverse Reactions
Other Hematologic Adverse Reactions
The most common serious adverse events observed
in clinical trials were infections. Other serious, medically relevant
adverse events
-
Blood: pancytopenia
-
Platelet, Bleeding and Clotting: thrombocytopenia
-
Red Blood Cell: anemia, hemolytic anemia
-
White Cell and Reticuloendothelial: leukopenia, lymphadenopathy
Hematologic Post-marketing Adverse Events
The following adverse events, some with fatal outcome, have been reported during post-approval use of REMICADE: neutropenia, interstitial lung disease (including pulmonary fibrosis/interstitial pneumonitis and very rare rapidly progressive disease), idiopathic thrombocytopenic purpura, thrombotic thrombocytopenic purpura, pericardial effusion, systemic and cutaneous vasculitis, erythema multiforme, Stevens-Johnson Syndrome, toxic epidermal necrolysis, peripheral demyelinating disorders (such as Guillain-Barré syndrome, chronic inflammatory demyelinating polyneuropathy, and multifocal motor neuropathy), new-onset and worsening psoriasis (all subtypes including pustular, primarily palmoplantar), transverse myelitis, and neuropathies and acute liver failure, jaundice, hepatitis, and cholestasis. Because these events are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to REMICADE exposure.3204
Adverse Reactions in Pediatric Crohn’s Disease
The following adverse events were reported more
commonly in 103 randomized pediatric Crohn’s disease patients
administered
Content on this page was last reviewed on January 30, 2010.
Content on this page was last changed on March 30, 2009.
References:| 3204. | Remicade [prescribing information]. Malvern, PA: Centocor Ortho Biotech Inc.; November 2009. |
| 5481. | Centocor. Data on file. 2004. |
| 11338. | International Drug Regulatory Affairs Compendium (IDRAC). Report of CIOMS Working Groups III and V (2nd Edition) - Guidelines for Preparing Core Clinical-Safety Information / Investigator’s Brochures, 1999. IDRAC website. http://www.idrac.com/idrac/DocInformation.aspx?ID=00023315®ion1=INT . Accessed November 10, 2008. |
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Prescribing Information and Medication Guide
REMICADE® (infliximab) Indications and Important Safety Information
INDICATIONS AND USAGE
Crohn’s Disease
REMICADE is indicated for reducing signs and symptoms and inducing and maintaining clinical remission in adult and pediatric patients with moderately to severely active Crohn’s disease who have had an inadequate response to conventional therapy.
REMICADE is indicated for reducing the number of draining enterocutaneous and rectovaginal fistulas and maintaining fistula closure in adult patients with fistulizing Crohn’s disease.
Ulcerative Colitis
REMICADE is indicated for reducing signs and symptoms, inducing and maintaining clinical remission and mucosal healing, and eliminating corticosteroid use in patients with moderately to severely active ulcerative colitis who have had an inadequate response to conventional therapy.
Rheumatoid Arthritis
REMICADE, in combination with methotrexate, is indicated for reducing signs and symptoms, inhibiting the progression of structural damage, and improving physical function in patients with moderately to severely active rheumatoid arthritis.
Ankylosing Spondylitis
REMICADE is indicated for reducing signs and symptoms in patients with active ankylosing spondylitis.
Psoriatic Arthritis
REMICADE is indicated for reducing signs and symptoms of active arthritis, inhibiting the progression of structural damage, and improving physical function in patients with psoriatic arthritis.
Plaque Psoriasis
REMICADE is indicated for the treatment of adult patients with chronic severe (i.e., extensive and /or disabling) plaque psoriasis who are candidates for systemic therapy and when other systemic therapies are medically less appropriate. REMICADE should only be administered to patients who will be closely monitored and have regular follow-up visits with a physician.
IMPORTANT SAFETY INFORMATION
RISK OF INFECTIONS
Patients treated with REMICADE® (infliximab) are at increased risk for developing serious infections that may lead to hospitalization or death. Most patients who developed these infections were taking concomitant immunosuppressants such as methotrexate or corticosteroids. Discontinue REMICADE® if a patient develops a serious infection or sepsis.
Reported infections include:
- Active tuberculosis (TB), including reactivation of latent TB. Patients frequently presented with disseminated or extrapulmonary disease. Patients should be tested for latent TB before and during treatment with REMICADE®. 1,2 Treatment for latent infection should be initiated prior to treatment with REMICADE®.
- Invasive fungal infections, including histoplasmosis, coccidioidomycosis, candidiasis, aspergillosis, and pneumocystosis. Patients may present with disseminated, rather than localized, disease. Empiric anti-fungal therapy should be considered in patients at risk for invasive fungal infections who develop severe systemic illness.
- Bacterial, viral, and other infections due to opportunistic pathogens.
The risks and benefits of treatment with REMICADE® should be carefully considered prior to initiating therapy in patients with chronic or recurrent infection. Closely monitor patients for the development of signs and symptoms of infection during and after treatment with REMICADE®, including the possible development of TB in patients who tested negative for latent TB infection prior to initiating therapy.
In clinical trials, other serious infections observed in patients treated with REMICADE® included pneumonia, cellulitis, abscess, and skin ulceration.
MALIGNANCIES
Lymphoma and other malignancies, some fatal, have been reported in children and adolescent patients treated with TNF blockers, including REMICADE®. Approximately half of these cases were lymphomas, including Hodgkin's and non-Hodgkin's lymphoma. The other cases represented a variety of malignancies, including rare malignancies that are usually associated with immunosuppression and malignancies that are not usually observed in children and adolescents. The malignancies occurred after a median of 30 months after the first dose of therapy. Most of the patients were receiving concomitant immunosuppressants.
Postmarketing cases of hepatosplenic T-cell lymphoma, a rare type of T-cell lymphoma, have been reported in patients treated with TNF blockers including REMICADE®. These cases have had a very aggressive disease course and have been fatal. All reported REMICADE® cases have occurred in patients with Crohn’s disease or ulcerative colitis and the majority were in adolescent and young adult males. All of these patients had received treatment with azathioprine or 6-mercaptopurine concomitantly with REMICADE® at or prior to diagnosis. Carefully assess the risks and benefits of treatment with REMICADE®, especially in these patient types.
In clinical trials of all TNF inhibitors, more cases of lymphoma were observed compared with controls and the expected rate in the general population. However, patients with Crohn’s disease, rheumatoid arthritis, or plaque psoriasis may be at higher risk for developing lymphoma. In clinical trials of some TNF inhibitors, including REMICADE®, more cases of other malignancies were observed compared with controls. The rate of these malignancies among patients treated with REMICADE® was similar to that expected in the general population whereas the rate in control patients was lower than expected. Cases of acute and chronic leukemia have been reported with postmarketing TNF-blocker use. As the potential role of TNF inhibitors in the development of malignancies is not known, caution should be exercised when considering treatment of patients with a current or a past history of malignancy or other risk factors such as chronic obstructive pulmonary disease (COPD).
CONTRAINDICATIONS
REMICADE® is contraindicated in patients with moderate to severe (NYHA Class III/IV) congestive heart failure (CHF) at doses greater than 5 mg/kg. Higher mortality rates at the 10 mg/kg dose and higher rates of cardiovascular events at the 5 mg/kg dose have been observed in these patients. REMICADE® should be used with caution and only after consideration of other treatment options. Patients should be monitored closely. Discontinue REMICADE® if new or worsening CHF symptoms appear. REMICADE® should not be (re)administered to patients who have experienced a severe hypersensitivity reaction or to patients with hypersensitivity to murine proteins or other components of the product.
HEPATITIS B REACTIVATION
TNF inhibitors, including REMICADE®, have been associated with reactivation of hepatitis B virus (HBV) in patients who are chronic carriers. Some cases were fatal. Patients at risk for HBV infection should be evaluated for prior evidence of HBV infection before initiating REMICADE®. Exercise caution when prescribing REMICADE® for patients identified as carriers of HBV and monitor closely for active HBV infection during and following termination of therapy with REMICADE®. Discontinue REMICADE® in patients who develop HBV reactivation and initiate antiviral therapy with appropriate supportive treatment. Exercise caution when considering resumption of REMICADE® and monitor patients closely.
HEPATOTOXICITY
Severe hepatic reactions, including acute liver failure, jaundice, hepatitis, and cholestasis have been reported rarely in patients receiving REMICADE® postmarketing. Some cases were fatal or required liver transplant. Aminotransferase elevations were not noted prior to discovery of liver injury in many cases. Patients with symptoms or signs of liver dysfunction should be evaluated for evidence of liver injury. If jaundice and/or marked liver enzyme elevations (e.g., ≥ 5 times the upper limit of normal) develop, REMICADE® should be discontinued, and a thorough investigation of the abnormality should be undertaken.
HEMATOLOGIC EVENTS
Cases of leukopenia, neutropenia, thrombocytopenia, and pancytopenia (some fatal) have been reported. The causal relationship to REMICADE® therapy remains unclear. Exercise caution in patients who have ongoing or a history of significant hematologic abnormalities. Advise patients to seek immediate medical attention if they develop signs and symptoms of blood dyscrasias or infection. Consider discontinuation of REMICADE® in patients who develop significant hematologic abnormalities.
HYPERSENSITIVITY
REMICADE® has been associated with hypersensitivity reactions that differ in their time of onset. Acute urticaria, dyspnea, and hypotension have occurred in association with infusions of REMICADE®. Serious infusion reactions including anaphylaxis were infrequent. Medications for the treatment of hypersensitivity reactions should be available.
NEUROLOGIC EVENTS
TNF inhibitors, including REMICADE®, have been associated with rare cases of new or exacerbated symptoms of demyelinating disorders including multiple sclerosis, optic neuritis, and Guillain-Barré syndrome, seizure, and CNS manifestations of systemic vasculitis. Exercise caution when considering REMICADE® in all patients with these disorders. Consider discontinuation for significant CNS adverse reactions.
AUTOIMMUNITY
Treatment with REMICADE® may result in the formation of autoantibodies and, rarely, in development of a lupus-like syndrome. Discontinue treatment if symptoms of a lupus-like syndrome develop.
ADVERSE REACTIONS
In clinical trials, the most common REMICADE® adverse reactions occurring in >10% of patients included infections (e.g. upper respiratory, sinusitis, and pharyngitis), infusion-related reactions, headache, and abdominal pain.
USE WITH OTHER DRUGS
The concomitant use of a TNF blocker and anakinra was associated with a higher risk of serious infections, therefore the use of REMICADE® in combination with anakinra is not recommended. Live vaccines should not be given with REMICADE®. Bring pediatric Crohn's patients up to date with all vaccinations prior to initiating REMICADE®.
Please see full Prescribing Information and Medication Guide for REMICADE®. Provide the Medication Guide to your patients and encourage discussion.
References: 1. American Thoracic Society, Centers for Disease Control and Prevention. Targeted tuberculin testing and treatment of latent tuberculosis infection. Am J Respir Crit Care Med. 2000;161:S221–S247. 2. See latest Centers for Disease Control guidelines and recommendations for tuberculosis testing in immunocompromised patients.