Patient leaflets and SmPCs, drug interaction checker, official dosages and NHS pharmacy opening hours — all in one place.
Patient leaflets and SmPCs, drug interaction checker, official dosages and NHS pharmacy opening hours — all in one place.
The electronic medicines compendium (emc) no longer publishes a Summary of Product Characteristics for this product, which usually means it is no longer marketed in the UK. The patient leaflet below is kept for reference, but the product may not be available.
If you were prescribed this medicine, other products containing Elexacaftor, Ivacaftor, Tezacaftor may still be available. Do not stop your treatment — ask your pharmacist or GP what to use instead.
for
Kaftrio contains three active substances: ivacaftor, tezacaftor and elexacaftor. The medicine helps lung cells to work better in some patients with cystic fibrosis (CF). CF is an inherited condition in which the lungs and the digestive system can become clogged with thick, sticky mucus. Kaftrio taken with ivacaftor is for patients aged 2 to less than 6 years who have CF, with at least one F508del mutation in the CFTR (cystic fibrosis transmembrane conductance regulator) gene. Kaftrio is intended as a long-term treatment. Kaftrio works on a protein called CFTR. The protein is damaged in some people with CF, if they have a mutation in the CFTR gene. Kaftrio is normally taken with another medicine, ivacaftor. Ivacaftor causes the protein to work better, while tezacaftor and elexacaftor increase the amount of protein at the cell surface. Kaftrio (taken with ivacaftor) helps your child's breathing by improving his/her lung function. You may also notice that your child does not get ill as often, or that it is easier for your child to gain weight. 2.
What you need to know before your child takes Kaftrio
Do not give your child Kaftrio: • If your child is allergic to ivacaftor, tezacaftor, elexacaftor, or any other ingredients of this medicine (listed in section 6).
1
Talk to your child's doctor and do not give your child this medicine, if this applies to your child. Warnings and precautions • Talk to your child's doctor if your child has liver problems or has had them previously. Your doctor may need to adjust your child's dose. • Your doctor will do some blood tests to check your child's liver before and during treatment with Kaftrio, especially if your child's blood tests showed high liver enzymes in the past. Liver enzymes in the blood can increase in patients receiving Kaftrio. Tell your doctor right away if your child has any symptoms of liver problems. These are listed in section 4. •
Talk to your child's doctor as soon as possible if your child experiences low mood or any other changes in mood and behaviour.
•
Talk to your child's doctor if your child has kidney problems, or your child has previously had them.
•
Talk to your child's doctor before starting treatment with Kaftrio if your child has received an organ transplant.
•
Your child's doctor may do eye examinations before and during treatment with Kaftrio. Cloudiness of the eye lens (cataract) without any effect on vision has occurred in some children and adolescents receiving this treatment.
Children under 2 Do not give Kaftrio granules to children under the age of 2 years because it is not known if Kaftrio granules are safe and effective in this age group. Other medicines and Kaftrio Tell your child's doctor or pharmacist if your child is taking, has recently taken, or might take any other medicines. Some medicines can affect how Kaftrio works or may make side effects more likely. In particular, tell your child's doctor if you take any of the medicines listed below. Your child's doctor may change the dose of one of the medicines if your child takes any of these. • Antifungal medicines (used for the treatment of fungal infections). These include fluconazole, itraconazole, ketoconazole, posaconazole and voriconazole. • Antibiotic medicines (used for the treatment of bacterial infections). These include clarithromycin, erythromycin, rifampicin, rifabutin and telithromycin. • Epilepsy medicines (used for the treatment of epileptic seizures or fits). These include carbamazepine, phenobarbital and phenytoin. • Herbal medicines. These include St. John's wort (Hypericum perforatum). • Immunosuppressants (used after an organ transplantation). These include ciclosporin, everolimus, sirolimus and tacrolimus. • Cardiac glycosides (used for the treatment of some heart conditions). These include digoxin. • Anticoagulant medicines (used to prevent blood clots). These include warfarin. 2
• • •
Medicines for diabetes. These include glimepiride, glipizide, glyburide, nateglinide and repaglinide. Medicines for lowering blood cholesterol. These include pitavastatin and rosuvastatin. Medicines for lowering blood pressure. These include verapamil.
Kaftrio with food and drink Avoid giving your child food or drinks containing grapefruit during treatment as these may increase the side effects of Kaftrio by increasing the amount of Kaftrio in your child's body. Driving and using machines Kaftrio can make your child dizzy. If your child feels dizzy, it is advised that your child does not ride his/her bike or do anything else that needs his/her full attention. Kaftrio granules contains lactose and sodium If you have been told by your child's doctor that your child has an intolerance to some sugars, contact your child's doctor before your child takes this medicine. This medicine contains less than 1 mmol sodium (23 mg) per dose, that is to say essentially "sodium-free". 3.
Kaftrio
Always give your child this medicine exactly as your child's doctor or pharmacist has told you. Check with your child's doctor or pharmacist if you are not sure. Your child's doctor will determine the correct dose for your child. Your child must keep using all other medicines, unless your child's doctor tells him/her to stop using any. Kaftrio is usually taken with ivacaftor. Recommended dose for patients aged 2 to less than 6 years Age Weight Morning dose One sachet of <14 kg ivacaftor 60 mg/tezacaftor 40 mg/elexacaftor 80 mg granules 2 to less than 6 years One sachet of ≥14 kg ivacaftor 75 mg/tezacaftor 50 mg/elexacaftor 100 mg granules
Evening dose One sachet of ivacaftor 59.5 mg granules One sachet of ivacaftor 75 mg granules
Give your child the morning and evening doses about 12 hours apart. The granules are for oral use. To prepare Kaftrio granules:
3
Examples of soft foods or liquids include pureed fruits, flavoured yogurt or pudding, and milk or juice.
Give both Kaftrio and ivacaftor doses with food that contains fat. Meals or snacks that contain fat include those prepared with butter or oils or those containing eggs. Other fat-containing foods are: • Cheese, whole milk, whole milk dairy products, yogurt, chocolate • Meats, oily fish • Avocados, hummus, soy-based products (tofu) • Nuts, fat-containing nutritional bars or drinks Avoid giving your child food and drink containing grapefruit while your child is taking Kaftrio. See Kaftrio with food and drink in section 2 for more details. If your child has liver problems, either moderate or severe, your child's doctor may reduce the dose of your child's medicine or decide to stop treatment with Kaftrio. See also Warnings and precautions in section 2. If your child takes more Kaftrio than he/she should Contact your child's doctor or pharmacist for advice. If possible, take your child's medicine and this leaflet with you. Your child may get side effects, including those mentioned in section 4 below. If you forget to give your child Kaftrio If you forget to give your child a dose, work out how long it is since the missed dose. • If less than 6 hours have passed since your child missed a dose, either morning or evening, give the forgotten dose as soon as possible. Then go back to your usual schedule. • If more than 6 hours have passed: • If your child missed a morning dose of Kaftrio, give it as soon as you remember. Do not give the evening dose of ivacaftor. Give the next morning dose at the usual time. • If your child missed an evening dose of ivacaftor, do not give the missed dose. Wait for the next day and take the morning dose of Kaftrio as usual. Do not give a double dose to make up for any missed doses. If you stop giving your child Kaftrio Give Kaftrio to your child for as long as your child's doctor recommends. Do not stop unless your child's doctor advises you to. If you have any further questions on the use of this medicine, ask your child's doctor or pharmacist. 4.
Possible side effects
Like all medicines, this medicine can cause side effects, although not everybody gets them.
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Serious side effects: Possible signs of liver problems Liver damage and worsening of liver function in people with or without liver disease. The worsening of liver function can be serious and may require transplantation. Increased liver enzymes in the blood are very common in patients treated with Kaftrio. These may be signs of liver problems: • Pain or discomfort in the upper right area of the stomach (abdominal) area • Yellowing of the skin or the white part of the eyes • Loss of appetite • Nausea or vomiting • Dark urine Tell your child's doctor straight away if he/she have any of these symptoms. Very common side effects (may affect more than 1 in 10 people) • Rash (more common in women than in men) Tell your child's doctor straight away if you notice a rash. Other side effects: Very common (may affect more than 1 in 10 people) • Headache • Dizziness • Upper respiratory tract infection (common cold) • Oropharyngeal pain (sore throat) • Nasal congestion • Stomach or abdominal pain • Diarrhoea • Increased liver enzymes (signs of stress on the liver) • Changes in the type of bacteria in mucus • Increased creatine phosphokinase (sign of muscle breakdown) seen in blood tests Common (may affect up to 1 in 10 people) • Flu • Abnormal breathing (Shortness of breath or difficulty breathing) • Low blood sugar (hypoglycaemia) • Runny nose • Sinus problems (sinus congestion) • Redness or soreness in the throat • Ear problems: ear pain or discomfort, ringing in the ears, inflamed eardrum • Spinning sensation (inner ear disorder) • Wind (flatulence) • Spots (acne) • Itchy skin • Breast mass • Feeling nauseous
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Uncommon (may affect up to 1 in 100 people) • Breast and nipple problems: inflammation, pain • Enlargement of the breast in men • Increases in blood pressure • Wheezing • Blocked ears (ear congestion) Not known (frequency cannot be estimated from the available data) • Damage to the liver (liver injury) • Raised bilirubin measurement (liver blood test) • Low mood. Signs of this can include changes in behaviour in children Additional side effects in adolescents Side effects in adolescents are similar to those observed in adults. Reporting of side effects If your child gets any side effects, talk to your child's doctor or pharmacist. This includes any
not listed in this leaflet. You can also report side effects directly via the: Yellow Card Scheme Website: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store. By reporting side effects you can help provide more information on the safety of this medicine. 5.
Kaftrio
Keep this medicine out of the sight and reach of children. Do not use this medicine after the expiry date which is stated on the outer carton and on the blister after EXP. The expiry date refers to the last day of that month. This medicine does not require any special storage conditions. Do not throw away any medicines via wastewater or household waste. Ask your child's pharmacist how to throw away medicines you no longer use. These measures will help to protect the environment. 6.
What Kaftrio contains
6
•
The other ingredients are: colloidal silicon dioxide, croscarmellose sodium, hypromellose, hypromellose acetate succinate, lactose monohydrate, magnesium stearate, mannitol, sodium lauryl sulfate, and sucralose.
See the end of section 2 for important information about the contents of Kaftrio. What Kaftrio looks like and contents of the pack Kaftrio 60 mg/40 mg/80 mg granules are white to off-white, granules in a sealed sachet. Kaftrio 75 mg/50 mg/100 mg granules are white to off-white, granules in a sealed sachet. Kaftrio is available in pack size of 28 sachets (4 weekly wallets, each with 7 sachets). Marketing Authorisation Holder Vertex Pharmaceuticals (Europe) Limited 2 Kingdom Street London, W2 6BD United Kingdom Tel: +44 (0)203 204-5100 Manufacturer Almac Pharma Services (Ireland) Limited Finnabair Industrial Estate Dundalk Co. Louth A91 P9KD Ireland Almac Pharma Services Limited Seagoe Industrial Estate Craigavon Northern Ireland BT63 5UA United Kingdom This leaflet was last revised in June 2026 Other sources of information Detailed information on this medicine is available on the website of Medicines and Healthcare products Regulatory Agency: http://www.mhra.gov.uk.
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Kaftrio 75 mg/50 mg/100 mg granules in sachet comes as granules containing 75mg / 50mg / 100mg. Always follow the dose your doctor or pharmacist has given you, and read the leaflet that comes with the medicine.
The active substance in Kaftrio 75 mg/50 mg/100 mg granules in sachet is elexacaftor, ivacaftor, tezacaftor.
This leaflet reproduces the patient information leaflet approved for Kaftrio 75 mg/50 mg/100 mg granules in sachet, as published on the electronic medicines compendium (emc). The version printed inside your medicine’s packaging is the one that applies to you.
Whether a medicine is available over the counter or on prescription only depends on its licence. Check the leaflet, or ask your pharmacist — they can tell you straight away.
The text above reproduces the patient information leaflet approved for this medicine, restructured for easier reading.
Kaftrio granules are indicated in a combination regimen with ivacaftor for the treatment of cystic fibrosis (CF) in paediatric patients aged 2 to less than 6 years who have at least one F508del mutation in the cystic fibrosis transmembrane conductance regulator (CFTR) gene (see section 5.1).
Kaftrio should only be prescribed by healthcare professionals with experience in the treatment of CF. If the patient's genotype is unknown, an accurate and validated genotyping method should be performed to confirm the presence of at least one F508del mutation using a genotyping assay (see section 5.1).
Posology
Paediatric patients aged 2 to less than 6 years should be dosed according to Table 1.
Table 1: Dosing recommendations for patients aged 2 to less than 6 years
Age
Weight
Morning dose
Evening dose
2 to less than 6 years
<14 kg
One sachet of ivacaftor 60 mg/tezacaftor 40 mg/elexacaftor 80 mg granules
One sachet of ivacaftor 59.5 mg granules
≥14 kg
One sachet of ivacaftor 75 mg/tezacaftor 50 mg/elexacaftor 100 mg granules
One sachet of ivacaftor 75 mg granules
The morning and evening dose should be taken approximately 12 hours apart, with fat‑containing food (see Method of administration).
Missed dose
If 6 hours or less have passed since the missed morning or evening dose, the patient should take the missed dose as soon as possible and continue on the original schedule.
If more than 6 hours have passed since:
• the missed morning dose, the patient should take the missed dose as soon as possible and should not take the evening dose. The next scheduled morning dose should be taken at the usual time.
OR
• the missed evening dose, the patient should not take the missed dose. The next scheduled morning dose should be taken at the usual time.
Morning and evening doses should not be taken at the same time.
Concomitant use of CYP3A inhibitors
When co‑administered with moderate CYP3A inhibitors (e.g., fluconazole, erythromycin, verapamil) or strong CYP3A inhibitors (e.g., ketoconazole, itraconazole, posaconazole, voriconazole, telithromycin, and clarithromycin), the dose should be reduced as in Table 2 (see sections 4.4 and 4.5).
Concomitant use of ciprofloxacin is not expected to have a clinically relevant effect on the exposure of ivacaftor/tezacaftor/elexacaftor; therefore, no dose adjustment is recommended with concomitant use of ciprofloxacin (see section 4.5).
Table 2: Dosing schedule for concomitant use with moderate and strong CYP3A inhibitors
Moderate CYP3A Inhibitors
Strong CYP3A Inhibitors
Alternate each day:
• One sachet of ivacaftor/tezacaftor/elexacaftor (IVA/TEZ/ELX) granules on the first day
• One sachet of ivacaftor (IVA) granules on the next day
No evening sachet of IVA granules.
One sachet of IVA/TEZ/ELX granules twice a week, approximately 3 to 4 days apart.
No evening sachet of IVA granules.
Special populations
Hepatic impairment
Treatment of patients aged 2 to less than 6 years with moderate hepatic impairment (Child‑Pugh Class B) is not recommended. For patients aged 2 to less than 6 years with moderate hepatic impairment, the use of Kaftrio should only be considered when there is a clear medical need, and the benefits are expected to outweigh the risks. If used, it should be used with caution at a reduced dose (see Table 3).
Studies have not been conducted in patients with severe hepatic impairment (Child‑Pugh Class C), but the exposure is expected to be higher than in patients with moderate hepatic impairment. Patients with severe hepatic impairment should not be treated with Kaftrio.
No dose adjustment is recommended for patients with mild (Child‑Pugh Class A) hepatic impairment (see Table 3) (see sections 4.4, 4.8, and 5.2).
Table 3: Recommendation for use in patients aged 2 to less than 6 years with hepatic impairment
Mild
(Child‑Pugh Class A)
Moderate
(Child‑Pugh Class B)
Severe
(Child‑Pugh Class C)
No dose adjustment
Use not recommended. Treatment of patients with moderate hepatic impairment should only be considered when there is a clear medical need and the benefits are expected to outweigh the risks.
If used, Kaftrio should be used with caution at a reduced dose, as follows:
• Days 1‑3: one sachet of IVA/TEZ/ELX granules each day
• Day 4: no dose
• Days 5‑6: one sachet of IVA/TEZ/ELX granules each day
• Day 7: no dose
Repeat above dosing schedule each week.
The evening dose of the IVA granules should not be taken.
Should not be used
Renal impairment
No dose adjustment is recommended for patients with mild and moderate renal impairment. There is no experience in patients with severe renal impairment or end‑stage renal disease (see sections 4.4 and 5.2).
Paediatric population
The safety and efficacy of Kaftrio in combination with ivacaftor in children aged less than 2 years have not yet been established.
No data are available (see section 5.1).
Method of administration
For oral use. The entire contents of each sachet of granules should be mixed with one teaspoon (5 mL) of age‑appropriate soft food or liquid and the mixture completely consumed. Food or liquid should be at room temperature or below. Each sachet is for single use only. Once mixed, the product has been shown to be stable for one hour, and therefore should be ingested during this period. Some examples of soft food or liquids include pureed fruits or vegetables, yogurt, water, milk, or juice. A fat‑containing meal or snack should be consumed just before or after dosing.
Kaftrio should be taken with fat‑containing food. Examples of meals or snacks that contain fat are those prepared with butter or oils or those containing eggs, cheeses, nuts, whole milk, or meats (see section 5.2).
Food or drink containing grapefruit should be avoided during treatment with Kaftrio (see section 4.5).
Hypersensitivity to the active substance(s) or to any of the excipients listed in section 6.1.
Elevated transaminases and hepatic injury
In a patient with cirrhosis and portal hypertension liver failure leading to transplantation has been reported while receiving IVA/TEZ/ELX in combination with ivacaftor. IVA/TEZ/ELX in combination with IVA should be used with caution in patients with pre‑existing advanced liver disease (e.g., cirrhosis, portal hypertension) and only if the benefits are expected to outweigh the risks. If used in these patients, they should be closely monitored after the initiation of treatment (see sections 4.2, 4.8, and 5.2).
Elevated transaminases are common in patients with CF and have been observed in some patients treated with IVA/TEZ/ELX in combination with IVA. In patients taking IVA/TEZ/ELX in combination with IVA, these elevations have sometimes been associated with concomitant elevations in total bilirubin. Assessments of transaminases (ALT and AST) and total bilirubin are recommended for all patients prior to initiating treatment, every 3 months during the first year of treatment and annually thereafter. For patients with a history of liver disease or transaminase elevations, more frequent monitoring should be considered. In the event of ALT or AST >5 x the upper limit of normal (ULN), or ALT or AST >3 x ULN with bilirubin >2 x ULN, dosing should be interrupted, and laboratory tests closely followed until the abnormalities resolve. Following the resolution of transaminase elevations, the benefits and risks of resuming treatment should be considered (see sections 4.2, 4.8, and 5.2).
Hepatic impairment
Treatment of patients with moderate hepatic impairment is not recommended. For patients with moderate hepatic impairment, the use of IVA/TEZ/ELX should only be considered when there is a clear medical need, and the benefits are expected to outweigh the risks. If used, it should be used with caution at a reduced dose (see Table 3).
Patients with severe hepatic impairment should not be treated with IVA/TEZ/ELX (see sections 4.2, 4.8, and 5.2).
Renal impairment
There is no experience in patients with severe renal impairment/end‑stage renal disease therefore caution is recommended in this population (see sections 4.2 and 5.2).
Patients after organ transplantation
IVA/TEZ/ELX in combination with IVA has not been studied in patients with CF who have undergone organ transplantation. Therefore, use in transplanted patients is not recommended. See section 4.5 for interactions with commonly used immunosuppressants.
Rash events
The incidence of rash events was higher in females than in males, particularly in females taking hormonal contraceptives. A role for hormonal contraceptives in the occurrence of rash cannot be excluded. For patients taking hormonal contraceptives who develop rash, interrupting treatment with IVA/TEZ/ELX in combination with IVA and hormonal contraceptives should be considered. Following the resolution of rash, it should be considered if resuming IVA/TEZ/ELX in combination with IVA without hormonal contraceptives is appropriate. If rash does not recur, resumption of hormonal contraceptives can be considered (see section 4.8).
Mood disturbances
Effects on mood and behaviour have been reported in patients treated with IVA/TEZ/ELX, usually occurring within three months of treatment initiation. Patients (and caregivers) should be alerted about the need to monitor for symptoms including new onset or worsening of anxiety or low mood, sleep disturbance, and forgetfulness. In some children, persistent behavioural changes have been observed while taking IVA/TEZ/ELX. Inform patients to seek medical advice as soon as possible if these symptoms present.
Consider whether treatment discontinuation is appropriate.
Elderly
Clinical studies of IVA/TEZ/ELX in combination with IVA did not include sufficient number of patients aged 65 years and older to determine whether response in these patients is different from younger adults. Dose recommendations are based on the pharmacokinetic profile and knowledge from studies with TEZ/IVA in combination with IVA, and IVA monotherapy (see sections 4.2 and 5.2).
Interactions with medicinal products
CYP3A inducers
Exposure to IVA is significantly decreased and exposures to ELX and TEZ are expected to decrease by the concomitant use of CYP3A inducers, potentially resulting in the reduced efficacy of IVA/TEZ/ELX and IVA; therefore, co‑administration with strong CYP3A inducers is not recommended (see section 4.5).
CYP3A inhibitors
Exposures of ELX, TEZ and IVA are increased when co‑administered with strong or moderate CYP3A inhibitors. The dose of IVA/TEZ/ELX and IVA should be adjusted when used concomitantly with strong or moderate CYP3A inhibitors (see section 4.5 and Table 2 in section 4.2).
Cataracts
Cases of non‑congenital lens opacities without impact on vision have been reported in paediatric patients treated with IVA‑containing regimens. Although other risk factors were present in some cases (such as corticosteroid use, exposure to radiation) a possible risk attributable to treatment with IVA cannot be excluded. Baseline and follow‑up ophthalmological examinations are recommended in paediatric patients initiating treatment with IVA/TEZ/ELX in combination with IVA (see section 5.3).
Excipients with known effect
Lactose
This medicinal product contains lactose. Patients with rare hereditary problems of galactose intolerance, total lactase deficiency or glucose‑galactose malabsorption should not take this medicinal product.
Sodium
This medicinal product contains less than 1 mmol sodium (23 mg) per sachet, that is to say essentially 'sodium‑free'.
Medicinal products affecting the pharmacokinetics of ELX, TEZ and/or IVA
CYP3A inducers
ELX, TEZ and IVA are substrates of CYP3A (IVA is a sensitive substrate of CYP3A). Concomitant use of strong CYP3A inducers may result in reduced exposures and thus reduced IVA/TEZ/ELX efficacy. Co‑administration of IVA with rifampicin, a strong CYP3A inducer, significantly decreased IVA area under the curve (AUC) by 89%. ELX and TEZ exposures are also expected to decrease during co‑administration with strong CYP3A inducers; therefore, co‑administration with strong CYP3A inducers is not recommended (see section 4.4).
Examples of strong CYP3A inducers include:
• rifampicin, rifabutin, phenobarbital, carbamazepine, phenytoin and St. John's wort (Hypericum perforatum)
CYP3A inhibitors
Co‑administration with itraconazole, a strong CYP3A inhibitor, increased ELX AUC by 2.8‑fold and TEZ AUC by 4.0‑ to 4.5‑fold. When co‑administered with itraconazole and ketoconazole, IVA AUC increased by 15.6‑fold and 8.5‑fold, respectively. The dose of IVA/TEZ/ELX and IVA should be reduced when co‑administered with strong CYP3A inhibitors (see Table 2 in section 4.2 and section 4.4).
Examples of strong CYP3A inhibitors include:
• ketoconazole, itraconazole, posaconazole and voriconazole
• telithromycin and clarithromycin
Simulations indicated that co‑administration with moderate CYP3A inhibitors fluconazole, erythromycin and verapamil, may increase ELX and TEZ AUC by approximately 1.9‑ to 2.3‑fold. Co‑administration of fluconazole increased IVA AUC by 2.9‑fold. The dose of IVA/TEZ/ELX and IVA should be reduced when co‑administered with moderate CYP3A inhibitors (see Table 2 in section 4.2 and section 4.4).
Examples of moderate CYP3A inhibitors include:
• fluconazole
• erythromycin
Co‑administration with grapefruit juice, which contains one or more components that moderately inhibit CYP3A, may increase exposure of ELX, TEZ and IVA. Food or drink containing grapefruit should be avoided during treatment with IVA/TEZ/ELX and IVA (see section 4.2).
Ciprofloxacin
IVA/TEZ/ELX was not evaluated for concomitant use with ciprofloxacin. However, ciprofloxacin had no clinically relevant effect on the exposure of TEZ or IVA and is not expected to have a clinically relevant effect on the exposure of ELX. Therefore, no dose adjustment is necessary during concomitant administration of IVA/TEZ/ELX with ciprofloxacin.
Potential for interaction with transporters
In vitro studies showed that ELX is a substrate for the efflux transporters P‑gp and Breast Cancer Resistance Protein (BCRP) but is not a substrate for OATP1B1 or OATP1B3. Exposure to ELX is not expected to be affected significantly by concomitant use of P‑gp and BCRP inhibitors due to its high intrinsic permeability and low likelihood of being excreted intact.
In vitro studies showed that TEZ is a substrate for the uptake transporter OATP1B1 and efflux transporters P‑gp and BCRP. TEZ is not a substrate for OATP1B3. Exposure to TEZ is not expected to be affected significantly by concomitant inhibitors of OATP1B1, P‑gp, or BCRP due to its high intrinsic permeability and low likelihood of being excreted intact. However, exposure to M2‑TEZ (TEZ metabolite) may be increased by inhibitors of P‑gp. Therefore, caution should be used when P‑gp inhibitors (e.g., ciclosporin) are used with IVA/TEZ/ELX.
In vitro studies showed that IVA is not a substrate for OATP1B1, OATP1B3, or P‑gp. IVA and its metabolites are substrates of BCRP in vitro. Due to its high intrinsic permeability and low likelihood of being excreted intact, co‑administration of BCRP inhibitors is not expected to alter exposure of IVA and M1‑IVA, while any potential changes in M6‑IVA exposures are not expected to be clinically relevant.
Medicinal products affected by ELX, TEZ and/or IVA
CYP2C9 substrates
IVA may inhibit CYP2C9; therefore, monitoring of the international normalised ratio (INR) during co‑administration of warfarin with IVA/TEZ/ELX and IVA is recommended. Other medicinal products for which exposure may be increased include glimepiride and glipizide; these medicinal products should be used with caution.
Potential for interaction with transporters
Co‑administration of IVA or TEZ/IVA with digoxin, a sensitive P‑gp substrate, increased digoxin AUC by 1.3‑fold, consistent with weak inhibition of P‑gp by IVA. Administration of IVA/TEZ/ELX and IVA may increase systemic exposure of medicinal products that are sensitive substrates of P‑gp, which may increase or prolong their therapeutic effect and adverse reactions. When used concomitantly with digoxin or other substrates of P‑gp with a narrow therapeutic index such as ciclosporin, everolimus, sirolimus and tacrolimus, caution and appropriate monitoring should be used.
ELX and M23‑ELX inhibit uptake by OATP1B1 and OATP1B3 in vitro. TEZ/IVA increased the AUC of pitavastatin, an OATP1B1 substrate, by 1.2‑fold. Co‑administration with IVA/TEZ/ELX in combination with IVA may increase exposures of medicinal products that are substrates of these transporters, such as statins, glyburide, nateglinide and repaglinide. When used concomitantly with substrates of OATP1B1 or OATP1B3, caution and appropriate monitoring should be used. Bilirubin is an OATP1B1 and OATP1B3 substrate. In study 445‑102, mild increases in mean total bilirubin were observed (up to 4.0 µmol/L change from baseline). This finding is consistent with the in vitro inhibition of bilirubin transporters OATP1B1 and OATP1B3 by ELX and M23‑ELX.
ELX and IVA are inhibitors of BCRP. Co‑administration of IVA/TEZ/ELX, and IVA may increase exposures of medicinal products that are substrates of BCRP, such as rosuvastatin. When used concomitantly with substrates of BCRP, appropriate monitoring should be used.
Hormonal contraceptives
IVA/TEZ/ELX in combination with IVA has been studied with ethinyl estradiol/levonorgestrel and was found to have no clinically relevant effect on the exposures of the oral contraceptive. IVA/TEZ/ELX and IVA is not expected to have an impact on the efficacy of oral contraceptives.
Paediatric population
Interaction studies have only been performed in adults.
Pregnancy
There are no or limited amount of data (less than 300 pregnancy outcomes) from the use of ELX, TEZ or IVA in pregnant women. Animal studies do not indicate direct or indirect harmful effects with respect to reproductive toxicity (see section 5.3). As a precautionary measure, it is preferable to avoid the use of IVA/TEZ/ELX during pregnancy.
Breast‑feeding
It is unknown whether ELX, TEZ, IVA, or their metabolites are excreted in human milk. Available pharmacokinetic/toxicological data in animals have shown excretion of ELX, TEZ and IVA into the milk of lactating female rats (see section 5.3). A risk to the newborns/infants cannot be excluded. A decision must be made whether to discontinue breast‑feeding or to discontinue/abstain from IVA/TEZ/ELX therapy taking into account the benefit of breast‑feeding for the child and the benefit of therapy for the woman.
Fertility
There are no data available on the effect of ELX, TEZ and IVA on fertility in humans. TEZ had no effects on fertility and reproductive performance indices in male and female rats at clinically relevant exposures. ELX and IVA had an effect on fertility in rats (see section 5.3).
IVA/TEZ/ELX in combination with IVA has a minor influence on the ability to drive or use machines. Dizziness has been reported in patients receiving IVA/TEZ/ELX in combination with IVA, TEZ/IVA in combination with IVA as well as IVA (see section 4.8). Patients experiencing dizziness should be advised not to drive or use machines until symptoms abate.
Summary of the safety profile
The most common adverse reactions experienced by patients aged 12 years and older who received IVA/TEZ/ELX in combination with IVA were headache (17.3%), diarrhoea (12.9%) and upper respiratory tract infection (11.9%).
Serious adverse reactions of rash were reported in 3 (1.5%) patients treated with IVA/TEZ/ELX in combination with IVA compared to 1 (0.5%) in placebo.
Tabulated list of adverse reactions
Table 4 reflects adverse reactions observed with IVA/TEZ/ELX in combination with IVA, TEZ/IVA in combination with IVA, and IVA monotherapy. Adverse reactions are listed by MedDRA system organ class and frequency: very common (≥1/10); common (≥1/100 to <1/10); uncommon (≥1/1,000 to <1/100); rare (≥1/10,000 to <1/1,000); very rare (<1/10,000); not known (cannot be estimated from the available data). Within each frequency grouping, adverse reactions are presented in the order of decreasing seriousness.
Table 4: Adverse reactions
MedDRA System Organ Class
Adverse Reactions
Frequency
Infections and infestations
Upper respiratory tract infection*, Nasopharyngitis
very common
Rhinitis*, Influenza*
common
Metabolism and nutrition disorders
Hypoglycaemia*
common
Psychiatric disorders
Low mood
not known
Nervous system disorders
Headache*, Dizziness*
very common
Ear and labyrinth disorders
Ear pain, Ear discomfort, Tinnitus, Tympanic membrane hyperaemia, Vestibular disorder
common
Ear congestion
uncommon
Respiratory, thoracic and mediastinal disorders
Oropharyngeal pain, Nasal congestion*
very common
Rhinorrhoea*, Sinus congestion, Pharyngeal erythema, Abnormal breathing*
common
Wheezing*
uncommon
Gastrointestinal disorders
Diarrhoea*, Abdominal pain*
very common
Nausea, Abdominal pain upper*, Flatulence*
common
Hepatobiliary disorders
Transaminase elevations
very common
Alanine aminotransferase increased*, Aspartate aminotransferase increased*
common
Liver injury†, Total bilirubin elevations†
not known
Skin and subcutaneous tissue disorders
Rash*
very common
Acne*, Pruritus*
common
Reproductive system and breast disorders
Breast mass
common
Breast inflammation, Gynaecomastia, Nipple disorder, Nipple pain
uncommon
Investigations
Bacteria in sputum
very common
Blood creatine phosphokinase increased*
very common
Blood pressure increased*
uncommon
*Adverse reactions observed during clinical studies with IVA/TEZ/ELX in combination with IVA.
†Liver injury (ALT and AST and total bilirubin elevations) reported from post‑marketing data with IVA/TEZ/ELX in combination with IVA. This also included liver failure leading to transplantation in a patient with pre‑existing cirrhosis and portal hypertension. Frequency cannot be estimated from the available data.
Safety data from the following studies were consistent with the safety data observed in study 445‑102.
• A 4‑week, randomised, double‑blind, active‑controlled study in 107 patients aged 12 years and older (study 445‑103).
• A 192‑week, open‑label safety and efficacy study (study 445‑105) in 506 patients rolled over from studies 445‑102 and 445‑103.
• An 8‑week, randomised, double‑blind, active‑controlled study in 258 patients aged 12 years and older (study 445‑104).
• A 24‑week, open‑label study (study 445‑106) in 66 patients aged 6 to less than 12 years.
• A 192‑week, two‑part (part A and part B), open‑label safety and efficacy study (study 445‑107) in patients aged 6 years and older who rolled over from study 445‑106.
• A 24‑week, open‑label study (study 445‑111) in 75 patients aged 2 to less than 6 years.
Description of selected adverse reactions
Transaminase elevations
In study 445‑102, the incidence of maximum transaminase (ALT or AST) >8, >5, or >3 x the ULN was 1.5%, 2.5% and 7.9% in IVA/TEZ/ELX‑treated patients and 1.0%, 1.5% and 5.5% in placebo‑treated patients. The incidence of adverse reactions of transaminase elevations was 10.9% in IVA/TEZ/ELX‑treated patients and 4.0% in placebo‑treated patients.
Post‑marketing cases of treatment discontinuation due to elevated transaminases have been reported (see section 4.4).
Rash events
In study 445‑102, the incidence of rash events (e.g., rash, rash pruritic) was 10.9% in IVA/TEZ/ELX‑ and 6.5% in placebo‑treated patients. The rash events were generally mild to moderate in severity. The incidence of rash events by patient sex was 5.8% in males and 16.3% in females in IVA/TEZ/ELX‑treated patients and 4.8% in males and 8.3% in females in placebo‑treated patients. In patients treated with IVA/TEZ/ELX, the incidence of rash events was 20.5% in females taking hormonal contraceptive and 13.6% in females not taking hormonal contraceptive (see section 4.4).
Increased creatine phosphokinase
In study 445‑102, the incidence of maximum creatine phosphokinase >5 x the ULN was 10.4% in IVA/TEZ/ELX‑ and 5.0% in placebo‑treated patients. The observed creatine phosphokinase elevations were generally transient and asymptomatic and many were preceded by exercise.
Increased blood pressure
In study 445‑102, the maximum increase from baseline in mean systolic and diastolic blood pressure was 3.5 mmHg and 1.9 mmHg, respectively for IVA/TEZ/ELX‑treated patients (baseline: 113 mmHg systolic and 69 mmHg diastolic) and 0.9 mmHg and 0.5 mmHg, respectively for placebo‑treated patients (baseline: 114 mmHg systolic and 70 mmHg diastolic).
The proportion of patients who had systolic blood pressure >140 mmHg or diastolic blood pressure >90 mmHg on at least two occasions was 5.0% and 3.0%, respectively in IVA/TEZ/ELX‑treated patients compared with 3.5% and 3.5%, respectively in placebo‑treated patients.
Paediatric population
The safety data of IVA/TEZ/ELX in combination with IVA in studies 445‑102, 445‑103, 445‑104, 445‑106 and 445‑111 was evaluated in 228 patients between 2 to less than 18 years of age. The safety profile is generally consistent among paediatric and adult patients.
During study 445‑106 in patients aged 6 to less than 12 years, the incidence of maximum transaminase (ALT or AST) >8, >5, and >3 x ULN were 0.0%, 1.5%, and 10.6%, respectively. No IVA/TEZ/ELX‑treated patients had transaminase elevation >3 x ULN associated with elevated total bilirubin >2 x ULN or discontinued treatment due to transaminase elevations (see section 4.4).
During study 445‑111 in patients aged 2 to less than 6 years, the incidence of maximum transaminase (ALT or AST) >8, >5, and >3 x ULN were 1.3%, 2.7%, and 8.0% respectively. No IVA/TEZ/ELX‑treated patients had transaminase elevation >3 x ULN associated with elevated total bilirubin >2 x ULN or discontinued treatment due to transaminase elevations (see section 4.4).
Other special populations
With the exception of sex differences in rash, the safety profile of IVA/TEZ/ELX in combination with IVA was generally similar across all subgroups of patients, including analysis by age, baseline percent predicted forced expiratory volume in one second (ppFEV1), and geographic regions.
Reporting of suspected adverse reactions
Reporting suspected adverse reactions after authorisation of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product. Healthcare professionals are asked to report any suspected adverse reactions via:
Yellow Card Scheme
Website: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store.
No specific antidote is available for overdose with IVA/TEZ/ELX. Treatment of overdose consists of general supportive measures including monitoring of vital signs and observation of the clinical status of the patient.
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