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Included as part of the PRECAUTIONS section.


Serious Infections

Kineret has been associated with an increased incidence of serious infections (2%) vs. Placebo ( < 1%) in clinical trials in RA. Administration of Kineret in RA should be discontinued if a patient develops a serious infection. In Kineret treated NOMID patients the risk of a NOMID flare when discontinuing Kineret treatment should be weighed against the potential risk of continued treatment. Treatment with Kineret should not be initiated in patients with active infections. The safety and efficacy of Kineret in immunosuppressed patients or in patients with chronic infections have not been evaluated.

Drugs that affect the immune system by blocking tumor necrosis factor (TNF) have been associated with an increased risk of reactivation of latent tuberculosis (TB). It is possible that taking drugs such as Kineret that blocks IL-1 increases the risk of TB or other atypical or opportunistic infections. Health care providers should follow current CDC guidelines both to evaluate for and to treat possible latent tuberculosis infections before initiating therapy with Kineret.

Use With TNF Blocking Agents

In a 24-week study of concurrent Kineret and etanercept therapy in RA patients, the rate of serious infections in the combination arm (7%) was higher than with etanercept alone (0%). The combination of Kineret and etanercept did not result in higher ACR response rates compared to etanercept alone [see Clinical Studies]. Use of Kineret in combination with TNF blocking agents is not recommended.

Hypersensitivity Reactions

Hypersensitivity reactions, including anaphylactic reactions and angioedema, have been reported with Kineret. If a severe hypersensitivity reaction occurs, administration of Kineret should be discontinued and appropriate therapy initiated.

The needle cover of the prefilled syringe contains dry natural rubber (a derivative of latex), which may cause allergic reactions in individuals sensitive to latex.


The impact of treatment with Kineret on active and/or chronic infections and the development of malignancies is not known [see ADVERSE REACTIONS].


In a placebo-controlled clinical trial (n = 126), no difference was detected in anti-tetanus antibody response between the Kineret and placebo treatment groups when the tetanus/diphtheria toxoids vaccine was administered concurrently with Kineret. No data are available on the effects of vaccination with other inactivated antigens in patients receiving Kineret. No data are available on either the effects of live vaccination or the secondary transmission of infection by live vaccines in patients receiving Kineret. Therefore, live vaccines should not be given concurrently with Kineret.

Neutrophil Count

Patients receiving Kineret may experience a decrease in neutrophil counts. Neutrophil counts should therefore be assessed prior to initiating Kineret treatment, and while receiving Kineret, monthly for 3 months, and thereafter quarterly for a period up to 1 year.

In the placebo-controlled studies, 8% of RA patients receiving Kineret had decreases in neutrophil counts of at least one World Health Organization (WHO) toxicity grade compared with 2% in the placebo control group. Nine Kineret-treated patients (0.4%) experienced neutropenia (ANC < 1 x 109/L). This is discussed in more detail in the Adverse Reactions (6): Hematologic Events (6.1) section.

In 43 NOMID patients followed for up to 60 months 2 patients experienced neutropenia that resolved over time during continued Kineret treatment. [see ADVERSE REACTIONS]

Patient Counseling Information

Instruct patients and their caregivers on the proper dosage and administration of Kineret and provide all patients with the “Patient information and Instructions for Use” insert. While this Patient Information and Instructions for Use provides information about the product and its use, it is not intended to take the place of regular discussions between the patient and healthcare provider. The ability to inject subcutaneously should be assessed to ensure proper administration of Kineret. The prefilled syringe contains an outer rigid plastic needle shield attached to a grey inner needle cover. Inform patients and their caregivers that the inner needle cover contains dry natural rubber (a derivative of latex), which should not be handled by persons sensitive to latex. Thoroughly instruct patients and their caregivers on the importance of proper disposal and caution against the reuse of needles, syringes, and drug product. A puncture-resistant container for the disposal of used syringes should be available to the patient. The full container should be disposed of according to the directions provided by the healthcare provider.


Inform patients that Kineret may lower the ability of their immune system to fight infections. Advise patients of the importance of contacting their doctor if they develop any symptoms of infection.

Injection-site reactions

Physicians should explain to patients that almost a quarter of patients in the clinical trial experienced a reaction at the injection site. Injection-site reactions may include pain, erythema, swelling, purities, brusing, mass, inflammation, dermatitis, edema, urticaria, vesicles, warmth, and hemorrhage. Inform patients or their caregivers that the prefilled syringe should be removed from refrigeration and left at room temperature for 30 minutes before injecting. Patients should be cautioned to avoid injecting into an area that is already swollen or red. Any persistent reaction should be brought to the attention of the prescribing physician.

Allergic or other drug reactions: Inform patients about the signs and symptoms of allergic and other adverse drug reactions and the appropriate actions they should take if they experience any of these signs and symptoms.

See FDA-approved patient labeling (PATIENT INFORMATION and Instruction for Use)

Nonclinical Toxicology

Carcinogenesis, Mutagenesis, and Impairment of Fertility

Long-term animal studies to evaluate the carcinogenic potential of Kineret were not conducted. Using a standard in vivo and in vitro battery of mutagenesis assays, Kineret did not induce gene mutations in either bacteria or mammalian cells. Kineret had no effects on fertility and reproductive performance indices in male and female rats at 200 mg/kg/day (approximately 25 times the maximum recommended dose).

Use In Specific Populations


Teratogenic effects - Pregnancy Category B

There are no adequate and well-controlled studies of Kineret in pregnant women. Reproductive studies have been performed in rats and rabbits at doses up to 25 times the maximum recommended human dose (on a mg/kg basis at a maternal dose of 200 mg/kg/day) and have revealed no evidence of impaired fertility or harm to the fetus due to Kineret. Because animal reproduction studies are not always predictive of human response, Kineret should be used during pregnancy only if clearly needed.

Nursing Mothers

It is not known whether Kineret is secreted in human milk. Because many drugs are secreted in human milk, caution should be exercised if Kineret is administered to nursing women.

Pediatric Use

The NOMID study included 36 pediatric patients: 13 below 2 years, 18 between 2 and 11 years, and 5 between 12 and 17 years of age. A subcutaneous Kineret starting dose of 1–2 mg/kg/day was administered in all age groups. An average maintenance dose of 3–4 mg/kg/day was adequate to maintain clinical response throughout the study irrespective of age but a higher dose was, on occasion, required in severely affected patients. The prefilled syringe does not allow doses lower than 20 mg to be administered.

Kineret was studied in a single randomized, blinded multi-center trial in 86 patients with polyarticular course Juvenile Rheumatoid Arthritis (JRA; ages 2-17 years) receiving a dose of 1 mg/kg subcutaneously daily, up to a maximum dose of 100 mg. The 50 patients who achieved a clinical response after a 12-week open-label run-in were randomized to Kineret (25 patients) or placebo (25 patients), administered daily for an additional 16 weeks. A subset of these patients continued open-label treatment with Kineret for up to 1 year in a companion extension study. An adverse event profile similar to that seen in adult RA patients was observed in these studies. These study data are insufficient to demonstrate efficacy and, therefore, Kineret is not recommended for pediatric use in Juvenile Rheumatoid Arthritis.

Geriatric Use

A total of 752 RA patients ≥ 65 years of age, including 163 patients ≥ 75 years of age, were studied in clinical trials. No differences in safety or effectiveness were observed between these patients and younger patients, but greater sensitivity of some older individuals cannot be ruled out. Because there is a higher incidence of infections in the elderly population in general, caution should be used in treating the elderly.

This drug is known to be substantially excreted by the kidney, and the risk of toxic reactions to this drug may be greater in patients with impaired renal function.

Renal Impairment

This drug is known to be substantially excreted by the kidney, and the risk of toxic reactions to this drug may be greater in patients with impaired renal function [see CLINICAL PHARMACOLOGY].

Hepatic Impairment

No formal studies have been conducted examining the pharmacokinetics of Kineret administered subcutaneously in patients with hepatic impairment.

This monograph has been modified to include the generic and brand name in many instances.

Last reviewed on RxList: 11/7/2013


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