In order to improve the traceability of the use of biological medicinal products, it is recommended to record the name and series of the drug in the patient's medical record.
It was demonstrated that the dissolved drug retained chemical and physical stability for 48 hours at a temperature of 2-8 ° C and 30 ± 2 ° C / relative humidity of 65 ± 5%. From a microbiological point of view, the drug should be used as soon as possible within 3 hours after dissolution and dilution.
Infusion reactions and hypersensitivity reactions
The use of infliximab may be associated with the development of acute infusion reactions, including anaphylactic shock and HRT reactions.
Acute infusion reactions, including anaphylactic, may develop during (within seconds) or within a few hours after infusion. If an acute reaction occurs, the infusion should be stopped immediately. When carrying out the infusion, emergency means should be available (such as epinephrine, antihistamines, hydrocortisone and / or artificial ventilation). Preliminary administration of antihistamines, hydrocortisone and / or paracetamol is possible to prevent mild and transient effects.
Perhaps the formation of antibodies to infliximab, which may be associated with an increase in the frequency of infusion reactions. A small part of the infusion reactions were severe allergic reactions. There was a correlation between the formation of antibodies to infliximab and a decrease in the duration of response to therapy. Joint use with immunomodulators was associated with a decrease in the incidence of antibodies to infliximab and a decrease in the frequency of infusion reactions. The effect of joint therapy with immunomodulators was more pronounced in patients receiving episodic therapy than in patients on maintenance therapy.In patients who stopped using immunosuppressants before or during treatment with infliximab, the risk of antibody formation is increased. Antibodies to infliximab may not always be detected in serum samples. With the development of a serious reaction, symptomatic therapy should be prescribed, subsequent infusions of infliximab should not be given.
In clinical trials, cases of development of HRT reactions were reported. The available data suggest that an increase in the interval without taking infliximab increases the risk of HRT reactions. Patients should immediately seek medical attention for any adverse event. When resumption of therapy in patients after a long break should be carefully monitored signs and symptoms of HRT reactions.
Infections
Before and during and after therapy, the patient should be closely monitored for signs of possible infection, including tuberculosis. Since the withdrawal of infliximab occurs within 6 months, the patient should be monitored during this period.Therapy with infliximab should be discontinued if the patient develops a serious infection or sepsis.
Caution should be exercised in the use of infliximab in patients with chronic infections or a recurrent history of infection, including those receiving concomitant therapy with immunosuppressants. Patients should avoid exposure to possible risk factors for infection.
TNFα is a mediator of inflammation and a modulator of cellular immunity. Experimental data have shown that TNFα is necessary for purification from intracellular infections. Clinical experience shows that immunological protection against infections can be compromised in some patients receiving infliximab therapy.
It should be borne in mind that inhibition of TNFα activity may mask such symptoms of infection as fever. Early recognition of atypical clinical manifestations of serious infections and typical clinical manifestations of rare and atypical infections is critical for reducing the delay in diagnosis and therapy.
Patients receiving therapy with TNFα inhibitors are at greater risk of developing serious infections.
Tuberculosis, bacterial infections, including sepsis and pneumonia, invasive fungal, viral or other opportunistic infections have been observed in patients receiving infliximab. Some of these infections were fatal, the most frequently reported opportunistic infections with a mortality rate of more than 5% included pneumocystis, candidiasis, listeriosis and aspergillosis.
Patients who developed an infection during treatment with infliximab should be closely monitored and fully diagnosed. The use of infliximab should be discontinued if developed the patient of a new serious infection or sepsis, prescribe antibacterial or antifungal therapy before the control of the infectious process.
Tuberculosis
Cases of development of active tuberculosis were reported in patients who received infliximab. Most cases of tuberculosis were extrapulmonary local or disseminated.
Before the start of therapy with infliximab, the patient should be closely monitored for the identification of both active and latent tuberculosis.The examination should include a careful history, including whether the patient had tuberculosis in the past, whether they had contacts with patients with tuberculosis, and whether immunosuppressant therapy has been or is being conducted. It is necessary to conduct the necessary screening tests (chest x-ray, tuberculin test). It should be noted that in seriously ill patients and in patients with immunosuppression, there may be floora false-negative tuberculin test is conducted.
When diagnosing active tuberculosis, infliximab therapy can not be started.
If suspicion of latent tuberculosis should be consulted phthisiatrician. In all cases described below, the risk / benefit of infliximab therapy should be carefully evaluated.
When diagnosing latent tuberculosis, appropriate therapy should be started before infliximab therapy begins.
In patients with several or significant risk factors for developing tuberculosis, but whose latent tuberculosis is not confirmed by the test, the need for antituberculous therapy should be considered before initiating therapy with infliximab.
Consideration should be given to the need for the use of antituberculosis therapy before initiating therapy with infliximab in patients with active or latent tuberculosis in history, for which an adequate course of therapy can not be confirmed.
Patients should consult a doctor if signs or symptoms of tuberculosis appear (persistent cough, weight loss / weight loss, subfebrile fever) during or after therapy with infliximab.
Invasive fungal infections
In the group of patients who received infliximab, suspicion of invasive fungal infections such as aspergillosis, candidiasis, pneumocystosis, histoplasmosis, coccidiomycosis or blastomycosis should always occur when the patient develops a serious systemic disease, at an early stage should consult a specialist in the diagnosis and therapy of invasive fungal diseases in the examination of such patients . Invasive fungal infections can be represented by disseminated, not localized lesions, and the result of the analysis on antigens and antibodies in some patients with active infection may be negative.The need to initiate empirical antifungal therapy before the end of laboratory studies should be assessed, considering both the risk of developing a serious fungal infection and the effects of antifungal therapy.
For patients who have lived or visited regions endemic for invasive fungal infections, such as histoplasmosis, coccidiomycosis or blastomycosis, the benefits and risks of therapy with infliximab should be carefully evaluated before therapy begins.
Fistula of the Crohn's disease
Patients with Crohn's disease with acute purulent fistulas should not be started with infliximab before detecting and eliminating another possible foci of infection, especially an abscess.
Reactivation of the hepatitis B virus
Reactivation of the hepatitis B virus was observed in patients, chronic carriers of the virus, who received TNF antagonists, including infliximab, in some cases with a fatal outcome. Hepatitis B virus carriers who require infliximab therapy should carefully monitor signs and symptoms of infection during the course of therapy and for several months after graduation.Sufficient data on the effectiveness of the combined use of antiviral therapy (to prevent the reactivation of the virus) and TNF-α inhibitors in patients - chronic virus carriers are absent.
When hepatitis B is reactivated, therapy with infliximab should be discontinued and appropriate antiviral therapy is prescribed.
Dysfunction of the liver and biliary tract
In the post-marketing period of infliximab use, cases of jaundice and non-infectious hepatitis were rarely observed, sometimes with signs of autoimmune hepatitis. There have been reports of isolated cases of liver failure leading to death or requiring a liver transplant. Patients with signs or symptoms of liver dysfunction should be examined for liver damage. In the case of jaundice or increased ALT activity to a level exceeding 5-fold upper the value of the norm, it is necessary to cancel infliximab and conduct a thorough investigation of the violation.
Simultaneous use of the TNFα inhibitor and anakin
Simultaneous use of anakinra and other TNFα (etanercept) inhibitor in clinical trialswas accompanied by the development of serious infections and neutropenia and did not lead to an additional clinical effect compared to etanercept monotherapy. Due to the nature of the side effects observed with simultaneous therapy with anakinra and etanercept, similar types of toxicity can occur with combined therapy with anakinro and other TNFα inhibitors. In this regard, the simultaneous use of infliximab and anakinra is not recommended.
Simultaneous use of the inhibitor of TNF-α and abatacept
In clinical studies, the combined use of TNF inhibitors and abatacept was associated with an increased risk of infections, including serious infections, compared with the use of only single TNF inhibitors, without increasing clinical benefit. The simultaneous use of infliximab and abatacept is not recommended.
Simultaneous application with other biological preparations
There is insufficient data on the joint use of infliximab and other biological agents intended for use for the same indications. The simultaneous use of infliximab with these drugs is not recommended due to a possible increase in the risk of infection and other possible pharmacological interactions.
Transfer from another biological preparation
Care should be taken when transferring from one biological product to another, as cross-biological activity may increase the risk of developing adverse events, including infections.
Live vaccines and medications containing infectious agents
Data on the response to vaccination or the possibility of secondary transmission of infection when using live vaccines in patients are insufficient. The use of live vaccines can lead to a clinical manifestation of infections, including disseminated infection. The simultaneous use of infliximab and live vaccines is not recommended.
Use of drugs containing infectious agents, such as live attenuated bacteria (eg, BCG instillation for cancer therapy), can lead to a clinical manifestation of infections, including disseminated infection. It is not recommended simultaneous use of infliximab and medications containing infectious agents.
Autoimmune processes
In rare cases, the relative deficiency of TNFα caused by anti-TNF therapy can initiate the development of an autoimmune process.When symptoms of lupus-like syndrome occur with infliximab and positive tests for antibodies to double-stranded DNA, infliximab therapy should be discontinued.
Neurological disorders
The use of TNF inhibitors, including infliximab, in rare cases was accompanied by the appearance or growth of clinical and / or radiographic signs of demyelinating diseases of the central nervous system (including multiple sclerosis) and the peripheral nervous system, including Guillain-Barre syndrome. Patients with existing or newly emerging demyelinating diseases should carefully weigh the benefit and risk of anti-TNF therapy before prescribing infliximab. In the case of the development of such diseases, therapy with infliximab should be discontinued.
Malignant tumors and lymphoproliferative disorders
When conducting clinical trials using anti-TNF agents, a more frequent development of lymphoma was observed in patients receiving an anti-TNF agent than in patients in the control group. In clinical studies of infliximab, according to all approved indications, the appearance of lymphoma was rare, although more often than expected in general among the population.In the post-registration period, the development of leukemia in patients receiving TNF antagonists was reported. Since the risk of developing lymphoma and leukemia is elevated in patients with rheumatoid arthritis with a prolonged highly active inflammatory disease, risk assessment is difficult.
In clinical studies on the use of infliximab with a possible new indication, chronic obstructive pulmonary disease (COPD) (severe and moderate severity), the incidence of neoplasms in smokers (or former smokers) was higher in the group receiving infliximab, than in the control group. Caution should be exercised in prescribing anti-TNF therapy to patients who are at increased risk of developing malignant tumors due to smoking.
According to available data, the risk of developing lymphomas or other malignant neoplasms in patients receiving TNF inhibitors can not be ruled out. Caution should be exercised in prescribing TNF inhibitors to patients with malignant neoplasms in history or continuing therapy in patients with advanced malignancy.
Caution should also be exercised in patients with psoriasis or intensive therapy with immunosuppressants or long-term PUVA therapy in history.
Post-registration studies reported cases of the formation of malignant tumors, some fatal, among children, adolescents and adult young people (under 22 years of age) who received inhibitors of TNF (initiation of therapy at <18 years of age), including infliximab. Approximately half of the cases reported lymphomas. Other cases are represented by a number of different malignant tumors, including malignant tumors usually associated with immunosuppression. The risk of developing malignant neoplasms in patients receiving TNF inhibitors can not be ruled out.
In the post-marketing period, reports were received of rare cases of hepatolyenal T-cell lymphoma in the treatment of TNF inhibitors, including infliximab. This rare type of T-cell lymphoma is characterized by a very aggressive course of the disease and usually ends in a lethal outcome. All cases of infliximab therapy have been reported in patients with a diseaseCrohn's or ulcerative colitis, most of them were reported in adolescents or young adult males. All reported cases of hepatolienne T-cell lymphoma have been reported in patients who simultaneously received azathioprine or 6-mercaptopurine. The possible risk of simultaneous use of azathioprine or 6-mercaptopurine and infliximab should be carefully evaluated. The risk of developing hepatolienneal lymphoma in patients receiving infliximab, can not be ruled out.
There have been reports of the development of Merkel's carcinoma and melanoma in patients receiving TNFα blockers, including infliximab. It is recommended to periodically inspect the skin in patients, especially in patients with risk factors for malignant skin tumors.
All patients with ulcerative colitis who are at increased risk of developing dysplasia or colon carcinoma (eg, patients with prolonged ulcerative colitis or primary sclerosing cholangitis), or who have previously diagnosed these diseases, should be monitored regularly for dysplasia before and after therapy.Observation should include a colonoscopy and biopsy, depending on the recommendations adopted. It is not known whether treatment with infliximab affects the risk of developing dysplasia or colorectal cancer.
Since the possibility of increasing the risk of developing malignant neoplasms in patients with newly diagnosed dysplasia receiving infliximab therapy has not been established, the risks and benefits of infliximab therapy should be carefully evaluated and a decision to continue or discontinue therapy should be made.
Heart failure
Infliximab should be used with caution in patients with chronic heart failure I-II functional class by classification NYHA. Patients should be monitored, and in the event of new or worsening of existing signs of heart failure, therapy with infliximab should be discontinued.
Hematologic reactions
There have been reports of pancytopenia, leukopenia, neutropenia, and thrombocytopenia in patients receiving TNF inhibitors, including infliximab. All patients with development of signs and symptoms of blood dyscrasia (persistent fever, bruising, bleeding, pallor) should be immediately examined.In the case of severe hematologic abnormalities, infliximab therapy should be discontinued.
Other
Data on the safety of infliximab in patients who underwent surgery, including arthroplasty, are limited. When planning operations, it is necessary to take into account the long half-life of infliximab. When performing operations, patients receiving treatment with infliximab require close monitoring of infections and timely treatment of infections in the event of occurrence.
The lack of response to Crohn's disease therapy may indicate the presence of a fixed fibrotic stricture, which may require surgical therapy. The available data suggest that infliximab does not contribute to deterioration or the formation of stricture.
Special patient groups
Elderly patients (≥65 years of age)
The incidence of serious infections in elderly patients (≥65 years) was higher than in patients younger than 65 years of age. Some of these infections led to death. When treating elderly patients, one should be especially attentive to the risk of developing infections.
Patients of childhood
Infections
In clinical studies, infections in children were reported more often than in adults.
Vaccination
Patients are advised to undergo a full vaccination as far as possible according to the current calendar of preventive vaccinations before initiating therapy with infliximab.
Malignant neoplasms and lymphoproliferative disorders
Post-registration studies reported cases of the formation of malignant tumors, some fatal, among children, adolescents and adult young people (under the age of 22 years) who received inhibitors of TNF (initiation of therapy aged <18 years), including infliximab. Approximately half of the cases reported lymphomas. Other cases are represented by a number of different malignant tumors, including malignant tumors usually associated with immunosuppression. The risk of developing malignant neoplasms in patients receiving TNF inhibitors can not be ruled out.
In the post-marketing period, reports were received of rare cases of hepatolyenal T-cell lymphoma in the treatment with TNF inhibitors, including infliximab. This rare type of T-cell lymphoma is characterized by a very aggressive course of the disease and usually ends in a lethal outcome. All cases of treatment with infliximab have been reported in patients with Crohn's disease or ulcerative colitis, most of them have been reported in adolescents or young adult males. All reported cases of hepatolienne T-cell lymphoma have been reported in patients who simultaneously received azathioprine or 6-mercaptopurine. The possible risk of simultaneous use of azathioprine or 6-mercaptopurine and infliximab should be carefully evaluated. The risk of developing hepatolienneal lymphoma in patients receiving infliximab, can not be ruled out.
Infliximab therapy for children and adolescents under the age of 17 years with rheumatoid arthritis, ankylosing spondylitis, psoriatic arthritis or psoriasis, as well as therapy for children under the age of 6 with Crohn's disease or ulcerative colitis has not been studied. Prior to receiving data on the safety and efficacy of infliximab, the drug should not be used for these indications in the appropriate age groups.