DOVPRELA is a brand name for Pretomanid. The medicine, its uses, side effects and dosage are the same regardless of brand.
Used for: Dovprela is indicated in combination with bedaquiline and linezolid for the treatment of - adults with pulmonary tuberculosis (TB) due to Mycobacterium tuberculosis resistant to all of isoniazid, rifampicin, a fluoroquinolone and a second line injectable antibacterial drug and - adults with pulmonary TB due to M.…
Verbatim from this product's MHRA label. Tap a section to expand.
Treatment with pretomanid should be initiated and monitored by a physician experienced in the management of TB due to drug-resistant M. tuberculosis. Pretomanid should be administered by directly observed therapy (DOT) or in accordance with local practice.
Posology The recommended dosage is 200 mg (one tablet) pretomanid once daily, for 26 weeks. 1). Pretomanid should be administered only in combination with bedaquiline (400 mg once daily for 2 weeks followed by 200 mg 3 times per week [with at least 48 hours between doses] orally for a total of 26 weeks) and linezolid (600 mg daily orally for up to 26 weeks).
The product information for bedaquiline and linezolid should be consulted for additional information on the use of these medicinal products. 1 for details of the study. 1) • If either bedaquiline or pretomanid is discontinued for any reason, the entire combination regimen should be discontinued.
• If linezolid is permanently discontinued during the initial four consecutive weeks of treatment, the entire combination regimen should be discontinued. • If linezolid is discontinued after the initial four weeks of consecutive treatment, the regimen may be continued with only bedaquiline and pretomanid.
Missed doses Any missed doses of pretomanid and bedaquiline should be made up at the end of treatment. Doses of linezolid that are missed due to linezolid adverse reactions should not be made up at the end of treatment. Refer to the product information of bedaquiline and linezolid for additional information on these medicinal products.
Treatment duration The total duration of treatment with pretomanid in combination with bedaquiline and linezolid is 26 weeks. Data on longer treatment duration is limited. 1). Elderly population (≥ 65 years of age) There is limited clinical data on the use of pretomanid in elderly patients.
Hence, the safety and efficacy of pretomanid in elderly patients have not been established. 4). Renal impairment The safety and efficacy of pretomanid in populations with renal impairment have not been established. No data are available.
Use in patients with renal impairment is not recommended. Paediatric population The safety and efficacy of pretomanid in children and adolescents have not yet been established. No data are available. Method of administration For oral use.
The most frequent adverse drug reactions during treatment with pretomanid in combination with bedaquiline and linezolid were nausea, vomiting and transaminases increased. Patients experienced peripheral neuropathy and anaemia, which are known adverse reactions to linezolid, respectively.
Nausea, vomiting and transaminases increased are possible adverse reactions to all three medicinal products in the regimen. Refer to the Summary of Product Characteristics of bedaquiline and linezolid for more information on adverse reactions caused by these two medicinal products.
Tabulated list of pretomanid adverse reactions Adverse drug reactions (ADRs) reported in 109 patients treated with pretomanid in combination with bedaquiline and linezolid (1 200 mg daily) for 26 weeks from the uncontrolled phase 3 trial Nix-TB, together with ADRs reported in 45 patients treated with pretomanid in combination with bedaquiline and linezolid (1 200 mg daily) for 26 weeks and in 45 patients treated with pretomanid in combination with bedaquiline and linezolid (600 mg daily) for 26 weeks in the phase 3 trial ZeNix, are summarized in the table below by system organ class and frequency.
The adverse drug reactions list below reflects in part the safety profile of the BPaL study regimen as it is hard to separate causality of one drug from another. ADRs considered attributed to linezolid are marked with Δ.
Table 1:
Pretomanid Adverse Drug Reactions from Clinical Studies System Organ Class Very Common ≥1/10 Common ≥1/100 to <1/10 Uncommon ≥1/1,000 to <1/100 Infections and infestations Oral candidiasis* Blood and lymphatic system disorder Anaemia* ∆ Leukopenia ∆, neutropenia* ∆, thrombocytopenia *∆ Lymphopenia ∆, pancytopenia ∆ System Organ Class Very Common ≥1/10 Common ≥1/100 to <1/10 Uncommon ≥1/1,000 to <1/100 Metabolic and nutrition disorders Decreased appetite Hypoglycaemia, lactic acidosis *∆, hypomagnesaemia Dehydration, hypocalcaemia, hypovolaemia, Psychiatric disorders Insomnia Anxiety, depression Nervous system disorders Peripheral neuropathy* ∆ Dysgeusia, dizziness, headache Eye disorders Visual impairment*, eye irritation, eye pain, optic neuropathy*∆, dry eye Lens disorder, eye pruritis, eye swelling, papilloedema, presbyopia Ear and labyrinth disorder Deafness Cardiac disorder Palpitations, sinus tachycardia Vascular disorders Hypotension Respiratory, thoracic and mediastinal disorders Cough, epistaxis Gastrointestina l disorders Nausea, vomiting, dyspepsia Gastritis*, diarrhoea, constipation, gastrooesophageal reflux disease, pancreatitis*, abdominal pain* Abdominal distension, glossodynia, haematemesis Hepatobiliary disorders Transaminase increased* Hyperbilirubinaemia* Hepatomegaly, jaundice Skin and subcutaneous tissue disorder Acne* Dry skin, alopecia, pruritus*, rash* Dermatitis allergic, skin hyperpigmentation Musculoskeleta l and connective tissue disorders Musculoskeletal pain*, muscle spasms* Reproductive system and breast disorder Erectile dysfunction, metrorrhagia General Fatigue* Malaise System Organ Class Very Common ≥1/10 Common ≥1/100 to <1/10 Uncommon ≥1/1,000 to <1/100 disorders and administration site conditions Investigations Gamma- glutamyltransferase increased, electrocardiogram QT prolonged, blood alkaline phosphatase increased, blood creatine phosphokinase increased, blood urea increased, lipase increased*, amylase increased*, blood creatinine increased Albumin urine present, blood creatine phosphokinase MB increased, blood uric acid increased, creatinine renal clearance decreased *Selected terms are collapsed as follows: peripheral neuropathy (burning sensation, hypoesthesia, hyporeflexia, neuropathy peripheral, paraesthesia, peripheral motor neuropathy, peripheral sensorimotor neuropathy, peripheral sensory neuropathy, polyneuropathy); gastritis (gastritis, chronic gastritis); acne (acne, dermatitis acneiform); musculoskeletal pain (arthralgia, back pain, costochondritis, myalgia, pain in extremity, musculoskeletal pain); transaminases increased (alanine aminotransferase (ALT) increased, aspartate aminotransferase (AST) increased, drug- induced liver injury, hepatic enzyme increased, hepatic function abnormal, liver function test increased, transaminases increased); rash (rash, rash erythematous, rash maculo-papular, rash papular, rash vesicular, nodular rash); pruritus (pruritus, pruritus generalized, rash pruritic); abdominal pain (abdominal pain, abdominal pain lower, abdominal pain upper, abdominal tenderness); visual impairment (vision blurred, visual acuity reduced, visual impairment); amylase increased (amylase increased, hyperamylasaemia); lipase increased (hyperlipasaemia, lipase increased); optic neuropathy (optic neuropathy, optic neuritis); pancreatitis (pancreatitis, haemorrhagic pancreatitis); anaemia (anaemia, haemoglobin decrease); thrombocytopenia (thrombocytopenia, platelet count decreased); neutropenia (neutropenia, neutrophil count decreased); hyperbilirubinemia (hyperbilirubinemia, blood bilirubin increased); lactic acidosis (lactic acidosis, acidosis); muscle spasms (muscle spasms, muscuoloskeletal stiffness); fatigue (fatigue, asthenia); oral candidiasis (oral candidiasis, oral fungal infection, angular cheilitis).
Safety and effectiveness of pretomanid have not been established for its use in combination with medicinal products other than bedaquiline and linezolid as part of the recommended dosing regimen, and thus pretomanid should not be used as part of any other regimen.
Hepatotoxicity Hepatotoxicity may occur with use of the regimen consisting of pretomanid, bedaquiline and linezolid. Liver-related laboratory tests should be monitored. 1), should be avoided while on the regimen, especially in patients with impaired hepatic function.
Symptoms and signs (such as fatigue, anorexia, nausea, jaundice, dark urine, liver tenderness and hepatomegaly) should be addressed throughout treatment. Laboratory tests (alanine aminotransferase [ALT], aspartate aminotransferase [AST], alkaline phosphatase, and bilirubin) should be monitored at initiation of treatment, and at a minimum once every week during the first month of treatment, every other week during month 2, and monthly thereafter while on treatment, and as needed.
If evidence of new or worsening liver dysfunction occurs, a test for viral hepatitis should be performed and other hepatotoxic medicinal products should be discontinued. Treatment with the entire regimen should be interrupted if: • Aminotransferase elevations are accompanied by total bilirubin elevation greater than 2 times the upper limit of normal.
• Aminotransferase elevations are greater than 8 times the upper limit of normal. • Aminotransferase elevations are greater than 5 times the upper limit of normal and persist beyond 2 weeks. Treatment may be re-initiated under close surveillance when hepatic enzymes and clinical symptoms normalize.
Modification/interruption due to linezolid adverse reactions Modification or interruption of linezolid dosing may be needed during the course of therapy to manage the known linezolid toxicities. 1). Myelosuppression Complete blood counts should be monitored at a minimum at start of treatment, at two weeks, and then monthly in patients receiving linezolid as part of the combination regimen.
1.
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2). Tablets should be swallowed with water. If the patient has trouble swallowing a whole tablet, crushing the tablets and mixing with water for administration may be an acceptable alternative. Intake should occur immediately after crushing and mixing with water.
∆: ADRs that are attributed to linezolid Description of selected adverse reactions Increased transaminases In the Nix-TB trial in which 109 patients were treated with pretomanid in combination with bedaquiline and linezolid, combined with the ZeNix patients treated within the arms dosed for 26 weeks with linezolid, 19% of patients experienced the ADR of increased transaminases (very common).
Except for one patient who died due to pneumonia and sepsis, all patients who experienced increased transaminases were able to continue or resume therapy after interruption, and complete the full course of treatment. ECG QT interval prolongation QT prolongation is a known adverse reaction of bedaquiline.
Bedaquiline in combination with pretomanid appears to […]
Haematologic parameters are variable from measurement to measurement, and decreases should be evaluated in the context of the patient’s overall medical condition. Guidelines below may be considered when it is likely that linezolid has caused the decrease in blood count.
Consider pausing or reducing the dose of linezolid to 300 mg in the following situations. • Anaemia - if haemoglobin falls below 80 g/l or more than 25% below the start of treatment. 75 × 109/l or significantly below baseline. Confirm with a repeat test before making further decisions as ANCs can have diurnal and other variability.
• Thrombocytopenia - if platelets fall below 50 × 109/l or significantly below baseline. Ideally confirm with a repeat test before making further decisions. When improvement in the myelosuppression is observed, consider resuming linezolid at the initial dose or at half the initial dose.
Peripheral neuropathy and optic neuropathy Peripheral neuropathy associated with linezolid is generally reversible or improved with interruption, dose reduction, or discontinuation of linezolid dosing. When improvement in the peripheral neuropathy is observed, consider resuming linezolid at 300 mg (half the initial dose).
1), the incidence of interruption/reduction/discontinuation of linezolid due to peripheral neuropathy increased steadily from around 2 months of therapy throughout the completion of therapy. Monitor visual symptoms in all patients receiving the combination regimen of pretomanid, bedaquiline, and linezolid.
If a patient experiences symptoms of visual impairment, interrupt linezolid dosing and obtain prompt ophthalmologic examination to evaluate for signs of optic neuropathy. Lactic acidosis Lactic acidosis is a known adverse reaction of linezolid.
Patients who develop recurrent nausea or vomiting should receive immediate medical evaluation, including evaluation of bicarbonate and lactic acid levels, and interruption of linezolid should be considered. Linezolid may be reinitiated at a lower dose with close monitoring when signs and symptoms of lactic acidosis resolve.
QT prolongation QT prolongation was reported with the combination regimen of pretomanid, bedaquiline, and linezolid. QT prolongation is a known adverse reaction of bedaquiline. Bedaquiline in combination with pretomanid appears to result in a higher QT prolongation than expected with bedaquiline alone.
However, the impact of pretomanid has not been fully characterized. An ECG should be obtained before initiation of treatment, and at least monthly during treatment with the combination regimen of pretomanid, bedaquiline, and linezolid.
Serum potassium, calcium, and magnesium should be obtained at baseline and corrected if abnormal. Follow-up monitoring of electrolytes should be performed if QT prolongation is detected. The following may increase the risk for QT prolongation: • a history of Torsade de Pointes, • a personal or family history of congenital long QT syndrome, • a history of or ongoing hypothyroidism, • ongoing bradyarrhythmia, • heart failure or known structural heart disease, • QT-interval as corrected by the Fridericia method (QTcF) > 450 ms (confirmed by repeat electrocardiogram) or • serum calcium, magnesium, or potassium levels below the lower limits of normal.
The entire regimen of pretomanid, bedaquiline, and linezolid must be discontinued if the patient develops clinically significant ventricular arrhythmia or a QTcF interval of greater than 500 ms (confirmed by repeat ECG). If syncope occurs, an ECG should be obtained to detect QT prolongation.
The QT prolongation […]