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Lonsurf

Active Substance: trifluridine / tipiracil hydrochloride
Common Name: trifluridine / tipiracil
ATC Code: L01BC
Marketing Authorisation Holder: Les Laboratoires Servier
Active Substance: trifluridine / tipiracil hydrochloride
Status: Authorised
Authorisation Date: 2016-04-25
Therapeutic Area: Colorectal Neoplasms
Pharmacotherapeutic Group: Antineoplastic agents

Therapeutic Indication

Lonsurf is indicated for the treatment of adult patients with metastatic colorectal cancer (CRC) who have been previously treated with, or are not considered candidates for, available therapies including fluoropyrimidine-, oxaliplatin- and irinotecan-based chemotherapies, anti-VEGF agents, and anti EGFR agents.

What is Lonsurf and what is it used for?

Lonsurf is a cancer medicine used to treat adults with metastatic colorectal cancer (cancer of the large bowel that has spread to other parts of the body). It is used in patients who have already been treated with, or who cannot be given, other available treatments including chemotherapy based on medicines called fluoropyrimidines, oxaliplatin or irinotecan and treatment with other cancer medicines known as anti‑VEGF and anti‑EGFR.

Lonsurf contains the active substances trifluridine and tipiracil.

How is Lonsurf used?

Treatment with Lonsurf should be prescribed by a doctor who is experienced in the use of cancer medicines. The medicine can only be obtained with a prescription.

Lonsurf is available as tablets (15 mg trifluridine and 6.14 mg tipiracil; 20 mg trifluridine and 8.19 mg tipiracil) and is given in treatment cycles of 28 days. The dose to be taken is calculated based on the patient’s body surface area (calculated using the patient’s height and weight). The tablets are taken twice a day on days 1 to 5 and days 8 to 12 of each treatment cycle. They should be taken within one hour after morning and evening meals. The doctor may need to reduce the dose or interrupt treatment if certain side effects develop. Treatment with Lonsurf should continue for as long as benefits can be seen and the side effects are tolerable.

For further information, see the summary of product characteristics (also part of the EPAR).

How does Lonsurf work?

Lonsurf is a cytotoxic medicine (a medicine that kills cells that are dividing, such as cancer cells). It contains two active substances: trifluridine and tipiracil.

In the body, trifluridine is converted into an active form that is incorporated directly into DNA, the genetic material of cells. As a result, trifluridine interferes with DNA function and prevents the cells from dividing and multiplying.

The conversion of trifluridine into its active form occurs more readily in cancer cells than in normal cells, leading to higher levels of the active form of the medicine and a longer duration of action in cancer cells. This results in the growth of cancer cells being reduced, while normal cells are only slightly affected.

Tipiracil increases the level of trifluridine in the blood by slowing its breakdown. This therefore boosts trifluridine’s effect.

What benefits of Lonsurf have been shown in studies?

Lonsurf has been shown to prolong overall survival of patients with metastatic colorectal cancer who previously received other treatments. In one main study involving 800 patients, those treated with Lonsurf lived on average for 7.1 months compared with 5.3 months for patients who were treated with placebo (a dummy treatment). All patients in the study received supportive care.

What are the risks associated with Lonsurf?

The most common side effects with Lonsurf (which may affect more than 3 in 10 people) are neutropenia (low levels of neutrophils, a type of white blood cell that fights infection), nausea, tiredness, anaemia (low red blood cell counts) and leucopenia (low white blood cell counts). The most serious side effects are bone marrow suppression (when the bone marrow produces less blood cells than normal) and gastrointestinal toxicity (injury to the lining of the gut such as ulcers).

For the full list of all side effects and restrictions with Lonsurf, see the package leaflet.

Why is Lonsurf approved?

The Agency’s Committee for Medicinal Products for Human Use (CHMP) decided that Lonsurf’s benefits are greater than its risks and recommended that it be approved for use in the EU. The CHMP considered that the benefit of Lonsurf in prolonging survival in patients with metastatic colorectal cancer who have received previous treatment was clinically relevant.

Regarding its safety, although Lonsurf’s side effects can be serious they are in line with what can be expected for a cytotoxic medicine. The CHMP considered that the measures put in place are adequate to manage these risks.

What measures are being taken to ensure the safe and effective use of Lonsurf?

A risk management plan has been developed to ensure that Lonsurf is used as safely as possible. Based on this plan, safety information has been included in the summary of product characteristics and the package leaflet for Lonsurf, including the appropriate precautions to be followed by healthcare professionals and patients.

Other information about Lonsurf

The European Commission granted a marketing authorisation valid throughout the European Union for Lonsurf on 25 April 2016.

For more information about treatment with Lonsurf, read the package leaflet (also part of the EPAR) or contact your doctor or pharmacist.

Source: European Medicines Agency

Disclaimer: Every effort has been made to ensure that the information provided here is accurate, up-to-date and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. This information has been compiled for use by healthcare practitioners and consumers in the United States. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate that the drug or combination is safe, effective or appropriate for any given patient. If you have questions about the substances you are taking, check with your doctor, nurse or pharmacist.

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