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 Thiotepa may still be available. Do not stop your treatment — ask your pharmacist or GP what to use instead.
for
Thiotepa Seacross contains the active substance thiotepa, which belongs to a group of medicines called alkylating agents. Thiotepa Seacross is used to prepare patients for bone marrow transplantation. It works by destroying bone marrow cells. This enables the transplantation of new bone marrow cells (haematopoietic progenitor cells), which in turn enable the body to produce healthy blood cells. Thiotepa Seacross can be used in adults and children and adolescents. 2.
e Thiotepa Seacross
Do not use Thiotepa Seacross
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Pregnancy, breast-feeding and fertility You must tell your doctor if you are pregnant or you think you may be pregnant before you receive Thiotepa Seacross. You must not use Thiotepa Seacross during pregnancy. Both women and men using Thiotepa Seacross must use effective contraceptive methods during treatment. Men should not father a child while treated with Thiotepa Seacross and during the year after cessation of treatment. It is not known whether this medicinal product is excreted in breast milk. As a precautionary measure, women must not breast-feed during treatment with Thiotepa Seacross. Thiotepa Seacross can impair male and female fertility. Male patients should seek advice for sperm preservation before therapy is started. Driving and using machines It is likely that certain adverse reactions of thiotepa like dizziness, headache and blurred vision could affect your ability to drive and use machines. If you are affected, do not drive or use machines. 3.
How to use Thiotepa Seacross
Your doctor will calculate the dose according to your body surface or weight and your disease.
Thiotepa Seacross is administered by a qualified healthcare professional as an intravenous infusion (drip in a vein) after dilution of the individual vial. Each infusion will last 2-4 hours. Frequency of administration You will receive your infusions every 12 or 24 hours. The duration of treatment can last up to 5 days. Frequency of administration and duration of treatment depend on your disease. 4.
Possible side effects
Like all medicines, Thiotepa Seacross can cause side effects, although not everybody gets them. The most serious side effects of Thiotepa Seacross therapy or the transplant procedure may include
of Thiotepa Seacross may occur with certain frequencies, which are defined as follows: Very common side effects (may affect more than 1 in 10 people)
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sensation of tingling, pricking or numbness (paraesthesia) partial loss of movement cardiac arrest nausea, vomiting, diarrhoea inflammation of the mucosa of the mouth (mucositis) irritated stomach, gullet, intestine inflammation of the colon anorexia, decreased appetite high glucose in the blood skin rash, itching, shedding skin colour disorder (do not confuse with jaundice – see below) redness of the skin (erythema) hair loss back and abdominal pain, pain muscle and joint pain abnormal electrical activity in the heart (arrhythmia) inflammation of lung tissue enlarged liver altered organ function blocking of a liver vein (veno-occlusive disease, VOD) yellowing of the skin and eyes (jaundice) hearing impaired lymphatic obstruction high blood pressure increased liver, renal and digestive enzymes abnormal blood electrolytes weight gain fever, general weakness, chills bleeding (haemorrhage) nasal bleeding general swelling due to fluid retention (oedema) pain or inflammation at the injection site eye infection (conjunctivitis) decreased sperm cell count vaginal bleeding absence of menstrual periods (amenorrhea) memory loss delaying in weight and height increase bladder disfunction underproduction of testosterone insufficient production of thyroid hormone deficient activity of the pituitary gland confusional state
Common side effects (may affect up to 1 in 10 people)
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fluid accumulation in the lungs (pulmonary oedema) pulmonary bleeding respiratory arrest blood in the urine (haematuria) and moderate renal insufficiency inflammation of the urinary bladder discomfort in urination and decrease in urine output (disuria and oliguria) increase in the amount of nitrogen components in the blood stream (BUN increase) cataract inability of the liver cerebral haemorrhage cough constipation and upset stomach obstruction of the bowel perforation of stomach changes in muscle tone gross lack of coordination of muscle movements bruises due to a low platelet count menopausal symptoms cancer (second primary malignancies) abnormal brain function male and female infertility
Uncommon side effects (may affect up to 1 in 100 people)
Thiotepa Seacross
Keep this medicine out of the sight and reach of children. Do not use Thiotepa Seacross after the expiry date which is stated on the carton and vial label, after EXP. The expiry date refers to the last day of that month. Store and transport refrigerated (2°C-8°C). Do not freeze. After reconstitution the product is stable for 72 hours when stored at 2°C-8°C. uk-pl-v0.4-clean-20251113
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After dilution the product is stable for 36 hours when stored at 2°C-8°C and for 6 hours when stored at 25°C. From a microbiological point of view, the product should be used immediately. Any unused product or waste material should be disposed of in accordance with local requirements. 6.
What Thiotepa Seacross contains
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Thiotepa Seacross must be reconstituted and diluted prior to administration. 2. SPECIAL PRECAUTIONS FOR DISPOSAL AND OTHER HANDLING General Procedures for proper handling and disposal of anticancer medicinal products should be considered. All transfer procedures require strict adherence to aseptic techniques, preferably employing a vertical laminar flow safety hood. As with other cytotoxic compounds, caution need to be exercised in handling and preparation of Thiotepa Seacross solutions to avoid accidental contact with skin or mucous membranes. Topical reactions associated with accidental exposure to thiotepa may occur. In fact, the use of gloves is recommended in preparing the solution for infusion. If thiotepa solution accidentally contacts the skin, immediately the skin must be thoroughly washed with soap and water. If thiotepa accidentally contacts mucous membranes, they must be flushed thoroughly with water. Calculation of dose of Thiotepa Seacross Thiotepa Seacross is administered at different doses in combination with other chemotherapeutic medicinal products in patients prior to conventional haematopoietic progenitor cell transplantation (HPCT) for haematological diseases or solid tumours. Thiotepa Seacross posology is reported, in adult and paediatric patients, according to the type of HPCT (autologous or allogeneic) and disease. Posology in adults AUTOLOGOUS HPCT Haematological diseases The recommended dose in haematological diseases ranges from 125 mg/m2/day (3.38 mg/kg/day) to 300 mg/m2/day (8.10 mg/kg/day) as a single daily infusion, administered from 2 up to 4 consecutive days before autologous HPCT depending on the combination with other chemotherapeutic medicinal products, without exceeding the total maximum cumulative dose of 900 mg/m2 (24.32 mg/kg), during the time of the entire conditioning treatment. LYMPHOMA The recommended dose ranges from 125 mg/m2/day (3.38 mg/kg/day) to 300 mg/m2/day (8.10 mg/kg/day) as a single daily infusion, administered from 2 up to 4 consecutive days before autologous HPCT depending on the combination with other chemotherapeutic medicinal products, without exceeding the total maximum cumulative dose of 900 mg/m2 (24.32 mg/kg), during the time of the entire conditioning treatment. CENTRAL NERVOUS SYSTEM (CNS) LYMPHOMA The recommended dose is 185 mg/m2/day (5 mg/kg/day) as a single daily infusion, administered for 2 consecutive days before autologous HPCT, without exceeding the total maximum cumulative dose of 370 mg/m2 (10 mg/kg), during the time of the entire conditioning treatment. MULTIPLE MYELOMA The recommended dose ranges from 150 mg/m2/day (4.05 mg/kg/day) to 250 mg/m2/day (6.76 mg/kg/day) as a single daily infusion, administered for 3 consecutive days before autologous HPCT depending on the combination with other chemotherapeutic medicinal products, without exceeding the total maximum cumulative dose of 750 mg/m2 (20.27 mg/kg), during the time of the entire conditioning treatment. Solid tumours The recommended dose in solid tumours ranges from 120 mg/m2/day (3.24 mg/kg/day) to 250 mg/m2/day (6.76 mg/kg/day) divided in one or two daily infusions, administered from 2 up to 5 uk-pl-v0.4-clean-20251113
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consecutive days before autologous HPCT depending on the combination with other chemotherapeutic medicinal products, without exceeding the total maximum cumulative dose of 800 mg/m2 (21.62 mg/kg), during the time of the entire conditioning treatment. BREAST CANCER The recommended dose ranges from 120 mg/m2/day (3.24 mg/kg/day) to 250 mg/m2/day (6.76 mg/kg/day) as a single daily infusion, administered from 3 up to 5 consecutive days before autologous HPCT depending on the combination with other chemotherapeutic medicinal products, without exceeding the total maximum cumulative dose of 800 mg/m2 (21.62 mg/kg), during the time of the entire conditioning treatment. CNS TUMOURS The recommended dose ranges from 125 mg/m2/day (3.38 mg/kg/day) to 250 mg/m2/day (6.76 mg/kg/day) divided in one or two daily infusions, administered from 3 up to 4 consecutive days before autologous HPCT depending on the combination with other chemotherapeutic medicinal products, without exceeding the total maximum cumulative dose of 750 mg/m2 (20.27 mg/kg), during the time of the entire conditioning treatment. OVARIAN CANCER The recommended dose is 250 mg/m2/day (6.76 mg/kg/day) as a single daily infusion, administered in 2 consecutive days before autologous HPCT, without exceeding the total maximum cumulative dose of 500 mg/m2 (13.51 mg/kg), during the time of the entire conditioning treatment. GERM CELL TUMOURS The recommended dose ranges from 150 mg/m2/day (4.05 mg/kg/day) to 250 mg/m2/day (6.76 mg/kg/day) as a single daily infusion, administered for 3 consecutive days before autologous HPCT depending on the combination with other chemotherapeutic medicinal products, without exceeding the total maximum cumulative dose of 750 mg/m2 (20.27 mg/kg), during the time of the entire conditioning treatment. ALLOGENEIC HPCT Haematological diseases The recommended dose in haematological diseases ranges from 185 mg/m2/day (5 mg/kg/day) to 481 mg/m2/day (13 mg/kg/day) divided in one or two daily infusions, administered from 1 up to 3 consecutive days before allogeneic HPCT depending on the combination with other chemotherapeutic medicinal products, without exceeding the total maximum cumulative dose of 555 mg/m2 (15 mg/kg), during the time of the entire conditioning treatment. LYMPHOMA The recommended dose in lymphoma is 370 mg/m2/day (10 mg/kg/day) divided in two daily infusions before allogeneic HPCT, without exceeding the total maximum cumulative dose of 370 mg/m2 (10 mg/kg), during the time of the entire conditioning treatment. MULTIPLE MYELOMA The recommended dose is 185 mg/m2/day (5 mg/kg/day) as a single daily infusion before allogeneic HPCT, without exceeding the total maximum cumulative dose of 185 mg/m2 (5 mg/kg), during the time of the entire conditioning treatment. LEUKAEMIA The recommended dose ranges from 185 mg/m2/day (5 mg/kg/day) to 481 mg/m2/day (13 mg/kg/day) divided in one or two daily infusions, administered from 1 up to 2 consecutive days before allogeneic HPCT depending on the combination with other chemotherapeutic medicinal products, without exceeding the total maximum cumulative dose of 555 mg/m2 (15 mg/kg), during the time of the entire conditioning treatment.
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THALASSEMIA The recommended dose is 370 mg/m2/day (10 mg/kg/day) divided in two daily infusions, administered before allogeneic HPCT, without exceeding the total maximum cumulative dose of 370 mg/m2 (10 mg/kg), during the time of the entire conditioning treatment. Posology in paediatric patients AUTOLOGOUS HPCT Solid tumours The recommended dose in solid tumours ranges from 150 mg/m2/day (6 mg/kg/day) to 350 mg/m2/day (14 mg/kg/day) as a single daily infusion, administered from 2 up to 3 consecutive days before autologous HPCT depending on the combination with other chemotherapeutic medicinal products, without exceeding the total maximum cumulative dose of 1050 mg/m2 (42 mg/kg), during the time of the entire conditioning treatment. CNS TUMOURS The recommended dose ranges from 250 mg/m2/day (10 mg/kg/day) to 350 mg/m2/day (14 mg/kg/day) as a single daily infusion, administered for 3 consecutive days before autologous HPCT depending on the combination with other chemotherapeutic medicinal products, without exceeding the total maximum cumulative dose of 1050 mg/m2 (42 mg/kg), during the time of the entire conditioning treatment. ALLOGENEIC HPCT Haematological diseases The recommended dose in haematological diseases ranges from 125 mg/m2/day (5 mg/kg/day) to 250 mg/m2/day (10 mg/kg/day) divided in one or two daily infusions, administered from 1 up to 3 consecutive days before allogeneic HPCT depending on the combination with other chemotherapeutic medicinal products, without exceeding the total maximum cumulative dose of 375 mg/m2 (15 mg/kg), during the time of the entire conditioning treatment. LEUKAEMIA The recommended dose is 250 mg/m2/day (10 mg/kg/day) divided in two daily infusions, administered before allogeneic HPCT, without exceeding the total maximum cumulative dose of 250 mg/m2 (10 mg/kg), during the time of the entire conditioning treatment. THALASSEMIA The recommended dose ranges from 200 mg/m2/day (8 mg/kg/day) to 250 mg/m2/day (10 mg/kg/day) divided in two daily infusions, administered before allogeneic HPCT without exceeding the total maximum cumulative dose of 250 mg/m2 (10 mg/kg), during the time of the entire conditioning treatment. REFRACTORY CYTOPENIA The recommended dose is 125 mg/m2/day (5 mg/kg/day) as a single daily infusion, administered for 3 consecutive days before allogeneic HPCT, without exceeding the total maximum cumulative dose of 375 mg/m2 (15 mg/kg), during the time of the entire conditioning treatment. GENETIC DISEASES The recommended dose is 125 mg/m2/day (5 mg/kg/day) as a single daily infusion, administered for 2 consecutive days before allogeneic HPCT, without exceeding the total maximum cumulative dose of 250 mg/m2 (10 mg/kg), during the time of the entire conditioning treatment. SICKLE CELL ANAEMIA
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The recommended dose is 250 mg/m2/day (10 mg/kg/day) divided in two daily infusions, administered before allogeneic HPCT, without exceeding the total maximum cumulative dose of 250 mg/m2 (10 mg/kg), during the time of the entire conditioning treatment. Reconstitution Thiotepa Seacross 15 mg powder for concentrate for solution for infusion must be reconstituted with 1.5 mL of sterile water for injections. Using a syringe fitted with a needle, aseptically withdraw 1.5 mL of sterile water for injections. Thiotepa Seacross 100 mg powder for concentrate for solution for infusion must be reconstituted with 10 mL of sterile water for injections. Using a syringe fitted with a needle, aseptically withdraw 10 mL of sterile water for injections. Inject the content of the syringe into the vial through the rubber stopper. Remove the syringe and the needle and mix manually by repeated inversions. Only colourless solutions, without any particulate matter, must be used. Reconstituted solutions may occasionally show opalescence; such solutions can still be administered. Further dilution in the infusion bag The reconstituted solution is hypotonic and must be further diluted prior to administration with 500 mL sodium chloride 9 mg/mL (0.9%) solution for injection (1000 mL if the dose is higher than 500 mg) or with an appropriate volume of sodium chloride 9 mg/mL (0.9%) in order to obtain a final Thiotepa Seacross concentration between 0.5 and 1 mg/mL. Administration Thiotepa Seacross infusion solution should be inspected visually for particulate matter prior to administration. Solutions containing a precipitate should be discarded. The infusion solution must be administered to patients using an infusion set equipped with a 0.2 μm in-line filter. Filtering does not alter solution potency. Thiotepa Seacross should be aseptically administered as a 2-4 hours infusion under room temperature (about 25°C) and normal light conditions. Prior to and following each infusion, the indwelling catheter line should be flushed with approximately 5 mL sodium chloride 9 mg/mL (0.9%) solution for injection. Disposal Thiotepa Seacross is for single use only. Any unused product or waste material should be disposed of in accordance with local requirements.
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Thiotepa Seacross 15 mg powder for concentrate for solution for infusion comes as infusion containing 15mg. Always follow the dose your doctor or pharmacist has given you, and read the leaflet that comes with the medicine.
The active substance in Thiotepa Seacross 15 mg powder for concentrate for solution for infusion is thiotepa.
Medicines with the same active substance, strength and form include: Thiotepa 15 mg powder for concentrate for solution for infusion, Thiotepa Riemser 15 mg powder for concentrate for solution for infusion. They are interchangeable only if your prescriber or pharmacist says so.
This leaflet reproduces the patient information leaflet approved for Thiotepa Seacross 15 mg powder for concentrate for solution for infusion, 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.
Thiotepa Seacross is indicated, in combination with other chemotherapy medicinal products:
• with or without total body irradiation (TBI), as conditioning treatment prior to allogeneic or autologous haematopoietic progenitor cell transplantation (HPCT) in haematological diseases in adult and paediatric patients;
• when high dose chemotherapy with HPCT support is appropriate for the treatment of solid tumours in adult and paediatric patients.
Thiotepa Seacross administration must be supervised by a physician experienced in conditioning treatment prior to haematopoietic progenitor cell transplantation.
Posology
Thiotepa Seacross is administered at different doses, in combination with other chemotherapeutic medicinal products, in patients with haematological diseases or solid tumours prior to HPCT.
Thiotepa Seacross posology is reported, in adult and paediatric patients, according to the type of HPCT (autologous or allogeneic) and disease.
Adults
AUTOLOGOUS HPCT
Haematological diseases
The recommended dose in haematological diseases ranges from 125 mg/m2/day (3.38 mg/kg/day) to 300 mg/m2/day (8.10 mg/kg/day) as a single daily infusion, administered from 2 up to 4 consecutive days before autologous HPCT depending on the combination with other chemotherapeutic medicinal products, without exceeding the total maximum cumulative dose of 900 mg/m2 (24.32 mg/kg), during the time of the entire conditioning treatment.
LYMPHOMA
The recommended dose ranges from 125 mg/m2/day (3.38 mg/kg/day) to 300 mg/m2/day (8.10 mg/kg/day) as a single daily infusion, administered from 2 up to 4 consecutive days before autologous HPCT depending on the combination with other chemotherapeutic medicinal products, without exceeding the total maximum cumulative dose of 900 mg/m2 (24.32 mg/kg), during the time of the entire conditioning treatment.
CENTRAL NERVOUS SYSTEM (CNS) LYMPHOMA
The recommended dose is 185 mg/m2/day (5 mg/kg/day) as a single daily infusion, administered for 2 consecutive days before autologous HPCT, without exceeding the total maximum cumulative dose of 370 mg/m2 (10 mg/kg), during the time of the entire conditioning treatment.
MULTIPLE MYELOMA
The recommended dose ranges from 150 mg/m2/day (4.05 mg/kg/day) to 250 mg/m2/day (6.76 mg/kg/day) as a single daily infusion, administered for 3 consecutive days before autologous HPCT depending on the combination with other chemotherapeutic medicinal products, without exceeding the total maximum cumulative dose of 750 mg/m2 (20.27 mg/kg), during the time of the entire conditioning treatment.
Solid tumours
The recommended dose in solid tumours ranges from 120 mg/m2/day (3.24 mg/kg/day) to 250 mg/m2/day (6.76 mg/kg/day) divided in one or two daily infusions, administered from 2 up to 5 consecutive days before autologous HPCT depending on the combination with other chemotherapeutic medicinal products, without exceeding the total maximum cumulative dose of 800 mg/m2 (21.62 mg/kg), during the time of the entire conditioning treatment.
BREAST CANCER
The recommended dose ranges from 120 mg/m2/day (3.24 mg/kg/day) to 250 mg/m2/day (6.76 mg/kg/day) as a single daily infusion, administered from 3 up to 5 consecutive days before autologous HPCT depending on the combination with other chemotherapeutic medicinal products, without exceeding the total maximum cumulative dose of 800 mg/m2 (21.62 mg/kg), during the time of the entire conditioning treatment.
CNS TUMOURS
The recommended dose ranges from 125 mg/m2/day (3.38 mg/kg/day) to 250 mg/m2/day (6.76 mg/kg/day) divided in one or two daily infusions, administered from 3 up to 4 consecutive days before autologous HPCT depending on the combination with other chemotherapeutic medicinal products, without exceeding the total maximum cumulative dose of 750 mg/m2 (20.27 mg/kg), during the time of the entire conditioning treatment.
OVARIAN CANCER
The recommended dose is 250 mg/m2 /day (6.76 mg/kg/day) as a single daily infusion, administered in 2 consecutive days before autologous HPCT, without exceeding the total maximum cumulative dose of 500 mg/m2 (13.51 mg/kg), during the time of the entire conditioning treatment.
GERM CELL TUMOURS
The recommended dose ranges from 150 mg/m2/day (4.05 mg/kg/day) to 250 mg/m2/day (6.76 mg/kg/day) as a single daily infusion, administered for 3 consecutive days before autologous HPCT depending on the combination with other chemotherapeutic medicinal products, without exceeding the total maximum cumulative dose of 750 mg/m2 (20.27 mg/kg), during the time of the entire conditioning treatment.
ALLOGENEIC HPCT
Haematological diseases
The recommended dose in haematological diseases ranges from 185 mg/m2/day (5 mg/kg/day) to 481 mg/m2/day (13 mg/kg/day) divided in one or two daily infusions, administered from 1 up to 3 consecutive days before allogeneic HPCT depending on the combination with other chemotherapeutic medicinal products, without exceeding the total maximum cumulative dose of 555 mg/m2 (15 mg/kg), during the time of the entire conditioning treatment.
LYMPHOMA
The recommended dose in lymphoma is 370 mg/m2/day (10 mg/kg/day) divided in two daily infusions before allogeneic HPCT, without exceeding the total maximum cumulative dose of 370 mg/m2 (10 mg/kg), during the time of the entire conditioning treatment.
MULTIPLE MYELOMA
The recommended dose is 185 mg/m2/day (5 mg/kg/day) as a single daily infusion before allogeneic HPCT, without exceeding the total maximum cumulative dose of 185 mg/m2 (5 mg/kg), during the time of the entire conditioning treatment.
LEUKAEMIA
The recommended dose ranges from 185 mg/m2/day (5 mg/kg/day) to 481 mg/m2/day (13 mg/kg/day) divided in one or two daily infusions, administered from 1 up to 2 consecutive days before allogeneic HPCT depending on the combination with other chemotherapeutic medicinal products, without exceeding the total maximum cumulative dose of 555 mg/m2 (15 mg/kg), during the time of the entire conditioning treatment.
THALASSEMIA
The recommended dose is 370 mg/m2/day (10 mg/kg/day) divided in two daily infusions, administered before allogeneic HPCT, without exceeding the total maximum cumulative dose of 370 mg/m2 (10 mg/kg), during the time of the entire conditioning treatment.
Paediatric population
AUTOLOGOUS HPCT
Solid tumours
The recommended dose in solid tumours ranges from 150 mg/m2/day (6 mg/kg/day) to 350 mg/m2/day (14 mg/kg/day) as a single daily infusion, administered from 2 up to 3 consecutive days before autologous HPCT depending on the combination with other chemotherapeutic medicinal products, without exceeding the total maximum cumulative dose of 1050 mg/m2 (42 mg/kg), during the time of the entire conditioning treatment.
CNS TUMOURS
The recommended dose ranges from 250 mg/m2/day (10 mg/kg/day) to 350 mg/m2/day (14 mg/kg/day) as a single daily infusion, administered for 3 consecutive days before autologous HPCT depending on the combination with other chemotherapeutic medicinal products, without exceeding the total maximum cumulative dose of 1050 mg/m2 (42 mg/kg), during the time of the entire conditioning treatment.
ALLOGENEIC HPCT
Haematological diseases
The recommended dose in haematological diseases ranges from 125 mg/m2/day (5 mg/kg/day) to 250 mg/m2/day (10 mg/kg/day) divided in one or two daily infusions, administered from 1 up to 3 consecutive days before allogeneic HPCT depending on the combination with other chemotherapeutic medicinal products, without exceeding the total maximum cumulative dose of 375 mg/m2 (15 mg/kg), during the time of the entire conditioning treatment.
LEUKAEMIA
The recommended dose is 250 mg/m2/day (10 mg/kg/day) divided in two daily infusions, administered before allogeneic HPCT, without exceeding the total maximum cumulative dose of 250 mg/m2 (10 mg/kg), during the time of the entire conditioning treatment.
THALASSEMIA
The recommended dose ranges from 200 mg/m2/day (8 mg/kg/day) to 250 mg/m2/day (10 mg/kg/day) divided in two daily infusions, administered before allogeneic HPCT without exceeding the total maximum cumulative dose of 250 mg/m2 (10 mg/kg), during the time of the entire conditioning treatment.
REFRACTORY CYTOPENIA
The recommended dose is 125 mg/m2/day (5 mg/kg/day) as a single daily infusion, administered for 3 consecutive days before allogeneic HPCT, without exceeding the total maximum cumulative dose of 375 mg/m2 (15 mg/kg), during the time of the entire conditioning treatment.
GENETIC DISEASES
The recommended dose is 125 mg/m2/day (5 mg/kg/day) as a single daily infusion, administered for 2 consecutive days before allogeneic HPCT, without exceeding the total maximum cumulative dose of 250 mg/m2 (10 mg/kg), during the time of the entire conditioning treatment.
SICKLE CELL ANAEMIA
The recommended dose is 250 mg/m2/day (10 mg/kg/day) divided in two daily infusions, administered before allogeneic HPCT, without exceeding the total maximum cumulative dose of 250 mg/m2 (10 mg/kg), during the time of the entire conditioning treatment.
Special populations
Renal impairment
Studies in renally impaired patients have not been conducted. As thiotepa and its metabolites are poorly excreted in the urine, dose modification is not recommended in patients with mild or moderate renal insufficiency. However, caution is recommended (see sections 4.4 and 5.2).
Hepatic impairment
Thiotepa has not been studied in patients with hepatic impairment. Since thiotepa is mainly metabolized through the liver, caution needs to be exercised when thiotepa is used in patients with pre-existing impairment of liver function, especially in those with severe hepatic impairment. Dose modification is not recommended for transient alterations of hepatic parameters (see section 4.4).
Elderly
The administration of thiotepa has not been specifically investigated in elderly patients. However, in clinical studies, a proportion of patients over the age of 65 received the same cumulative dose as the other patients. No dose adjustment was deemed necessary.
Method of administration
Thiotepa Seacross must be administered by a qualified healthcare professional as a 2-4 hours intravenous infusion via a central venous catheter.
Each vial must be reconstituted with 1.5 mL of sterile water for injections. The total volume of reconstituted vials to be administered should be further diluted in 500 mL of sodium chloride 9 mg/mL (0.9%) solution for injection prior to administration (1 000 mL if the dose is higher than 500 mg). In children, if the dose is lower than 250 mg, an appropriate volume of sodium chloride 9 mg/mL (0.9%) solution for injection may be used in order to obtain a final Thiotepa Seacross concentration between 0.5 and 1 mg/mL. For instructions on reconstitution and further dilution prior to administration, see section 6.6.
Precautions to be taken before handling or administering the medicinal product
Topical reactions associated with accidental exposure to thiotepa may occur. Therefore, the use of gloves is recommended in preparing the solution for infusion. If thiotepa solution accidentally contacts the skin, the skin must be immediately thoroughly washed with soap and water. If thiotepa accidentally contacts mucous membranes, they must be flushed thoroughly with water (see section 6.6).
Hypersensitivity to the active substance.
Pregnancy and lactation (see section 4.6).
Concomitant use with yellow fever vaccine and with live virus and bacterial vaccines (see section 4.5).
The consequence of treatment with thiotepa at the recommended dose and schedule is profound myelosuppression, occurring in all patients. Severe granulocytopenia, thrombocytopenia, anaemia or any combination thereof may develop. Frequent complete blood counts, including differential white blood cell counts, and platelet counts need to be performed during the treatment and until recovery is achieved. Platelet and red blood cell support, as well as the use of growth factors such as Granulocyte-colony stimulating factor (G-CSF), should be employed as medically indicated. Daily white blood cell counts and platelet counts are recommended during therapy with thiotepa and after transplant for at least 30 days.
Prophylactic or empiric use of anti-infectives (bacterial, fungal, viral) should be considered for the prevention and management of infections during the neutropenic period.
Thiotepa has not been studied in patients with hepatic impairment. Since thiotepa is mainly metabolized through the liver, caution needs to be observed when thiotepa is used in patients with pre-existing impairment of liver function, especially in those with severe hepatic impairment. When treating such patients it is recommended that serum transaminase, alkaline phosphatase and bilirubin are monitored regularly following transplant, for early detection of hepatotoxicity.
Patients who have received prior radiation therapy, greater than or equal to three cycles of chemotherapy, or prior progenitor cell transplant may be at an increased risk of hepatic veno-occlusive disease (see section 4.8).
Caution must be used in patients with history of cardiac diseases, and cardiac function must be monitored regularly in patients receiving thiotepa.
Caution must be used in patients with history of renal diseases and periodic monitoring of renal function should be considered during therapy with thiotepa.
Thiotepa might induce pulmonary toxicity that may be additive to the effects produced by other cytotoxic agents (busulfan, fludarabine and cyclophosphamide) (see section 4.8).
Previous brain irradiation or craniospinal irradiation may contribute to severe toxic reactions (e.g. encephalopathy).
The increased risk of a secondary malignancy with thiotepa, a known carcinogen in humans, must be explained to the patient.
Concomitant use with live attenuated vaccines (except yellow fever vaccines), phenytoin and fosphenytoin is not recommended (see section 4.5).
Thiotepa must not be concurrently administered with cyclophosphamide when both medicinal products are present in the same conditioning treatment. Thiotepa Seacross must be delivered after the completion of any cyclophosphamide infusion (see section 4.5).
During the concomitant use of thiotepa and inhibitors of CYP2B6 or CYP3A4, patients should be carefully monitored clinically (see section 4.5).
As most alkylating agents, thiotepa might impair male or female fertility. Male patients should seek for sperm cryopreservation before therapy is started and should not father a child while treated and during the year after cessation of treatment (see section 4.6).
Specific interactions with thiotepa
Live virus and bacterial vaccines must not be administered to a patient receiving an immunosuppressive chemotherapeutic agent and at least three months must elapse between discontinuation of therapy and vaccination.
Thiotepa appears to be metabolised via CYP2B6 and CYP3A4. Co-administration with inhibitors of CYP2B6 (for example clopidogrel and ticlopidine) or CYP3A4 (for example azole antifungals, macrolides like erythromycin, clarithromycin, telithromycin, and protease inhibitors) may increase the plasma concentrations of thiotepa and potentially decrease the concentrations of the active metabolite TEPA. Co-administration of inducers of cytochrome P450 (such as rifampicin, carbamazepine, phenobarbital) may increase the metabolism of thiotepa leading to increased plasma concentrations of the active metabolite. Therefore, during the concomitant use of thiotepa and these medicinal products, patients should be carefully monitored clinically.
Thiotepa is a weak inhibitor for CYP2B6, and may thereby potentially increase plasma concentrations of substances metabolised via CYP2B6, such as ifosfamide, tamoxifen, bupropion, efavirenz and cyclophosphamide. CYP2B6 catalyzes the metabolic conversion of cyclophosphamide to its active form 4-hydroxycyclophosphamide (4-OHCP) and co-administration of thiotepa may therefore lead to decreased concentrations of the active 4-OHCP. Therefore, a clinical monitoring should be exercised during the concomitant use of thiotepa and these medicinal products.
Contraindications of concomitant use
Yellow fever vaccine: risk of fatal generalized vaccine-induced disease.
More generally, live virus and bacterial vaccines must not be administered to a patient receiving an immunosuppressive chemotherapeutic agent and at least three months must elapse between discontinuation of therapy and vaccination.
Concomitant use not recommended
Live attenuated vaccines (except yellow fever): risk of systemic, possibly fatal disease. This risk is increased in subjects who are already immunosuppressed by their underlying disease.
An inactivated virus vaccine should be used instead, whenever possible (poliomyelitis).
Phenytoin: risk of exacerbation of convulsions resulting from the decrease of phenytoin digestive absorption by cytotoxic medicinal product or risk of toxicity enhancement and loss of efficacy of the cytotoxic medicinal product due to increased hepatic metabolism by phenytoin.
Concomitant use to take into consideration
Ciclosporine, tacrolimus: excessive immunosuppression with risk of lymphoproliferation.
Alkylating chemotherapeutic agents, including thiotepa, inhibit plasma pseudocholinesterase by 35% to 70%. The action of succinyl-choline can be prolonged by 5 to 15 minutes.
Thiotepa must not be concurrently administered with cyclophosphamide when both medicinal products are present in the same conditioning treatment. Thiotepa Seacross must be delivered after the completion of any cyclophosphamide infusion.
The concomitant use of thiotepa and other myelosuppressive or myelotoxic agents (i.e. cyclophosphamide, melphalan, busulfan, fludarabine, treosulfan) may potentiate the risk of haematologic adverse reactions due to overlapping toxicity profiles of these medicinal products.
Interaction common to all cytotoxics
Due to the increase of thrombotic risk in case of malignancy, the use of anticoagulative treatment is frequent. The high intra-individual variability of the coagulation state during malignancy and the potential interaction between oral anticoagulants and anticancer chemotherapy require, if it is decided to treat the patient with oral anticoagulants, to increase the frequency of the INR (International Normalised Ratio) monitoring.
Women of childbearing potential/Contraception in males and females
Women of childbearing potential have to use effective contraception during treatment and a pregnancy test should be performed before treatment is started. Male patients should not father a child while treated and during the year after cessation of treatment (see section 5.3).
Pregnancy
There are no data on the use of thiotepa during pregnancy. In pre-clinical studies thiotepa, as most alkylating agents, has been shown to cause embryofoetal lethality and teratogenicity (see section 5.3). Therefore, thiotepa is contraindicated during pregnancy.
Breast-feeding
It is unknown whether thiotepa is excreted in human milk. Due to its pharmacological properties and its potential toxicity for breast-fed newborns/infants, breast-feeding is contraindicated during treatment with thiotepa.
Fertility
As most alkylating agents, thiotepa might impair male and female fertility. Male patients should seek for sperm cryopreservation before therapy is started (see section 5.3).
Thiotepa Seacross has major influence on the ability to drive and use machines. It is likely that certain adverse reactions of thiotepa like dizziness, headache and blurred vision could affect these functions.
Summary of the safety profile
The safety of thiotepa has been examined through a review of adverse events reported in published data from clinical trials. In these studies, a total of 6 588 adult patients and 902 paediatric patients received thiotepa for conditioning treatment prior to haematopoietic progenitor cell transplantation.
Serious toxicities involving the haematologic, hepatic and respiratory systems were considered as expected consequences of the conditioning regimen and transplant process. These include infection and Graft-versus host disease (GvHD) which, although not directly related, were the major causes of morbidity and mortality, especially in allogeneic HPCT.
The most frequently adverse reactions reported in the different conditioning treatments including thiotepa are: infections, cytopenia, acute GvHD and chronic GvHD, gastrointestinal disorders, haemorrhagic cystitis and mucosal inflammation.
Leukoencephalopathy
Cases of leukoencephalopathy have been observed following treatment with thiotepa in adult and paediatric patients with multiple previous chemotherapies, including methotrexate and radiotherapy. Some cases had a fatal outcome.
Tabulated list of adverse reactions
Adults
The adverse reactions considered at least possibly related to conditioning treatment including thiotepa, reported in adult patients as more than an isolated case, are listed below by system organ class and by frequency. Within each frequency grouping, undesirable effects are presented in order of decreasing seriousness. Frequencies are defined as: 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).
System organ class
Very common
Common
Uncommon
Not known
Infections and infestations
Infection susceptibility increased
Sepsis
Toxic shock syndrome
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Treatment related second malignancy
Blood and lymphatic system disorders
Leukopenia
Thrombocytopenia
Febrile neutropenia
Anaemia
Pancytopenia
Granulocytopenia
Immune system disorders
Acute graft versus host disease
Chronic graft versus host disease
Hypersensitivity
Endocrine disorders
Hypopituitarism
Metabolism and nutrition disorders
Anorexia
Decreased appetite
Hyperglycaemia
Psychiatric disorders
Confusional state
Mental status changes
Anxiety
Delirium
Nervousness
Hallucination
Agitation
Nervous system disorders
Dizziness
Headache
Vision blurred
Encephalopathy
Convulsion
Paraesthesia
Intracranial aneurysm
Extrapyramidal disorder
Cognitive disorder
Cerebral haemorrhage
Leukoencephalopathy
Eye disorders
Conjunctivitis
Cataract
Ear and labyrinth disorders
Hearing impaired
Ototoxicity
Tinnitus
Cardiac disorders
Arrhythmia
Tachycardia
Cardiac failure
Cardiomyopathy
Myocarditis
Vascular disorders
Lymphoedema
Hypertension
Haemorrhage
Embolism
Respiratory, thoracic and mediastinal disorders
Idiopathic pneumonia syndrome
Epistaxis
Pulmonary oedema
Cough
Pneumonitis
Hypoxia
Gastrointestinal disorders
Nausea
Stomatitis
Oesophagitis
Vomiting
Diarrhoea
Dyspepsia
Abdominal pain
Enteritis
Colitis
Constipation
Gastrointestinal perforation Ileus
Gastrointestinal ulcer
Hepatobiliary disorders
Venoocclusive liver disease
Hepatomegaly
Jaundice
Skin and subcutaneous tissue disorders
Rash
Pruritus
Alopecia
Erythema
Pigmentation disorder
Erythrodermic psoriasis
Severe toxic skin reactions including cases of Stevens- Johnson syndrome and toxic epidermal necrolysis
Musculoskeletal and connective tissue disorders
Back pain
Myalgia
Arthralgia
Renal and urinary disorders
Cystitis haemorrhagic
Dysuria
Oliguria
Renal failure
Cystitis
Haematuria
Reproductive system and breast disorders
Azoospermia
Amenorrhoea
Vaginal haemorrhage
Menopausal symptoms
Infertility female
Infertility male
General disorders and administration site conditions
Pyrexia
Asthenia
Chills
Generalised oedema
Injection site inflammation
Injection site pain
Mucosal inflammation
Multi-organ failure
Pain
Investigations
Weight increased
Blood bilirubin increased
Transaminases increased
Blood amylase increased
Blood creatinine increased
Blood urea increased
Gamma-glutamyltransferase increased
Blood alkaline phosphatase increased
Aspartate aminotransferase increased
Paediatric population
The adverse reactions considered at least possibly related to conditioning treatment including thiotepa, reported in paediatric patients as more than an isolated case, are listed below by system organ class and by frequency. Within each frequency grouping, undesirable effects are presented in order of decreasing seriousness. Frequencies are defined as: 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).
System organ class
Very common
Common
Not known
Infections and infestations
Infection susceptibility increased
Sepsis
Thrombocytopenic purpura
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Treatment related second malignancy
Blood and lymphatic system disorders
Thrombocytopenia
Febrile neutropenia
Anaemia
Pancytopenia
Granulocytopenia
Immune system disorders
Acute graft versus host disease
Chronic graft versus host disease
Endocrine disorders
Hypopituitarism
Hypogonadism
Hypothyroidism
Metabolism and nutrition disorders
Anorexia
Hyperglycaemia
Psychiatric disorders
Mental status changes
Mental disorder due to a general medical condition
Nervous system disorders
Headache
Encephalopathy
Convulsion
Cerebral haemorrhage
Memory impairment
Paresis
Ataxia
Leukoencephalopathy
Ear and labyrinth disorders
Hearing impaired
Cardiac disorders
Cardiac arrest
Cardiovascular insufficiency
Cardiac failure
Vascular disorders
Haemorrhage
Hypertension
Respiratory, thoracic and mediastinal disorders
Pneumonitis
Idiopathic pneumonia syndrome
Pulmunary haemorrage
Pulmonary oedema
Epistaxis
Hypoxia
Respiratory arrest
Pulmonary arterial hypertension
Gastrointestinal disorders
Nausea
Stomatitis
Vomiting
Diarrhoea
Abdominal pain
Enteritis
Intestinal obstruction
Hepatobiliary disorders
Venoocclusive liver disease
Liver failure
Skin and subcutaneous tissue disorders
Rash
Erythema
Desquamation
Pigmentation disorder
Severe toxic skin reactions including cases of Stevens- Johnson syndrome and toxic epidermal necrolysis
Musculoskeletal and connective tissue disorders
Growth retardation
Renal and urinary disorders
Bladder disorders
Renal failure
Cystitis haemorrhagic
General disorders and administration site conditions
Pyrexia
Mucosal inflammation
Pain
Multi-organ failure
Investigations
Blood bilirubin increased
Transaminases increased
Blood creatinine increased
Aspartate aminotransferase increased
Alanine aminotransferase increased
Blood urea increased
Blood electrolytes abnormal
Prothrombin time ratio increased
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 the Yellow Card Scheme at: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store.
There is no experience with overdoses of thiotepa. The most important adverse reactions expected in case of overdose is myeloablation and pancytopenia.
There is no known antidote for thiotepa.
The haematological status needs to be closely monitored and vigorous supportive measures instituted as medically indicated.
Ask anything about Thiotepa Seacross 15 mg powder for concentrate for solution for infusion. The assistant answers only from this leaflet — if the leaflet does not cover it, it will say so. It does not give medical advice.
Answers come from the patient leaflet published on the electronic medicines compendium (emc). They are not medical advice. Ask a pharmacist or your GP if you are unsure. For urgent help call NHS 111, or 999 in an emergency.
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