The incidence of thyroid cancer has steadily increased globally over the last 50 years, and as the most common endocrine malignancy, there remains a need for additional treatment options, particularly for patients with DTC whose cancer no longer responds to radioactive iodine (RAI) therapy. The most common types of thyroid cancer, papillary and follicular, are classified as differentiated thyroid cancer (DTC) and account for approximately 90 percent of all cases.
While most patients with DTC are curable with surgery and radioactive iodine treatment, these treatments aren’t effective for some and the prognosis for those patients whose cancers persist or recur is poor. The safety and efficacy of LENVIMA was evaluated in a pivotal clinical trial involving 392 RAI-R DTC patients with radiographic evidence of disease progression within 12 months prior to randomization. The clinical trial showed that patients treated with LENVIMA had a statistically significant prolongation in progression-free survival compared to those receiving placebo. The most common adverse reactions observed in greater than or equal to 30% of LENVIMA-treated patients, in order of decreasing frequency, were: hypertension, fatigue, diarrhea, arthralgia/myalgia, decreased appetite, weight decreased, nausea, stomatitis, headache, vomiting, proteinuria, palmar-plantar erythrodysesthesia (PPE) syndrome, abdominal pain, and dysphonia.
We are pleased to be able to offer an additional treatment option to appropriate patients with locally recurrent or metastatic, progressive, RAI-R DTC. At Eisai, our human health care mission to give first thought to patients and families is the driving force behind our commitment to help increase the benefits health care provides to patients, especially those whose diseases have limited treatment options.
As such, Eisai is committed to ensuring patients have access to medicines from which they may benefit and is dedicated to working to ensure that our products are available to those who need them. Patients can visitwww.LenvimaReimbursement.com andwww.LenvimaSavingsProgram.com to learn more about Eisai’s services and reimbursement support programs.
We thank you for your continued support and commitment to patients suffering from locally recurrent or metastatic, progressive, RAI-refractory DTC and their families. We hope you will share this important news with your constituents.
LENVIMA (lenvatinib) is indicated for the treatment of patients with locally recurrent, or metastatic, progressive, radioactive iodine-refractory differentiated thyroid cancer (DTC).
Important Safety Information – Warnings and Precautions
Hypertension was reported in 73% of LENVIMA-treated patients (of which 44% were ≥ Grade 3) and 16% of patients in the placebo group. Control blood pressure prior to treatment and monitor blood pressure after 1 week, then every 2 weeks for the first 2 months, and then at least monthly during treatment. Withhold LENVIMA for Grade 3 hypertension; resume at a reduced dose when hypertension is controlled at ≤ Grade 2. Discontinue LENVIMA for life-threatening hypertension.
Cardiac dysfunction was reported in 7% of LENVIMA-treated patients (2% Grade 3 or greater). Monitor patients for clinical symptoms or signs of cardiac decompensation. Withhold LENVIMA for development of Grade 3 cardiac dysfunction until improved to Grade 0 or 1 or baseline. Resume at a reduced dose or discontinue LENVIMA depending on the severity and persistence of cardiac dysfunction. Discontinue LENVIMA for Grade 4 cardiac dysfunction.
Arterial thromboembolic events were reported in 5% of LENVIMA-treated patients; events of Grade 3 or greater were 3%. Discontinue LENVIMA following an arterial thrombotic event. LENVIMA has not been studied in patients who have had an arterial thromboembolic event within the previous 6 months.
4% of LENVIMA-treated patients experienced an increase in ALT and 5% experienced an increase in AST that was Grade 3 or greater. Monitor liver function before initiation and during treatment with LENVIMA. Withhold LENVIMA for the development of ≥ Grade 3 liver impairment until resolved to Grade 0 to 1 or baseline. Resume at a reduced dose or discontinue LENVIMA depending on the severity and persistence of hepatotoxicity. Discontinue LENVIMA for hepatic failure.
Proteinuria was reported in 34% of LENVIMA-treated patients (of which 11% were Grade 3). Monitor for proteinuria before initiation of, and periodically during treatment. Obtain a 24 hour urine protein if urine dipstick proteinuria ≥2+ is detected. Withhold LENVIMA for ≥ 2 grams of proteinuria/24 hours and resume at a reduced dose when proteinuria is <2 gm/24 hours. Discontinue LENVIMA for nephrotic syndrome.
Events of renal impairment were reported in 14% of LENVIMA-treated patients. Renal failure or impairment ≥ Grade 3 was 3% in LENVIMA-treated patients. Withhold LENVIMA for development of Grade 3 or 4 renal failure/impairment until resolved to Grade 0 to 1 or baseline. Resume at a reduced dose or discontinue LENVIMA depending on the severity and persistence of renal impairment.
Events of gastrointestinal perforation or fistula were reported in 2% of LENVIMA-treated patients. Discontinue LENVIMA in patients who develop gastrointestinal perforation or life-threatening fistula.
QT/QTc interval prolongation was reported in 9% of LENVIMA-treated patients (2% Grade 3 or greater). Monitor ECG in patients with congenital long QT syndrome, CHF, bradyarrhythmias, or patients taking drugs known to prolong the QT interval. Monitor and correct electrolyte abnormalities in all patients. Withhold LENVIMA for the development of ≥ Grade 3 QT interval prolongation. Resume LENVIMA at a reduced dose when QT prolongation resolves to Grade 0 or 1 or baseline.
Hypocalcemia ≥ Grade 3 was reported in 9 % of LENVIMA-treated patients. Monitor blood calcium levels at least monthly and replace calcium as necessary during LENVIMA treatment. Interrupt and adjust LENVIMA dosing as necessary depending on severity, presence of ECG changes, and persistence of hypocalcemia.
Reversible posterior leukoencephalopathy syndrome (RPLS) was reported in 3 patients across clinical studies in which 1108 patients received LENVIMA. Confirm the diagnosis of RPLS with MRI. Withhold LENMIVA for RPLS until fully resolved. Resume at a reduced dose or discontinue LENVIMA depending on the severity and persistence of neurologic symptoms.
Hemorrhagic events occurred in 35% of LENVIMA-treated patients and in 18% of the placebo group. The incidence of Grade 3-5 hemorrhage was similar between arms at 2% and 3%, respectively. The most frequently reported hemorrhagic event was epistaxis (11% Grade 1 and 1% Grade 2). Discontinuation due to hemorrhagic events occurred in 1% of LENVIMA-treated patients. There was one case of fatal intracranial hemorrhage among 16 patients who received LENVIMA and had CNS metastases at baseline. Withhold LENVIMA for the development of Grade 3 hemorrhage until resolved to Grade 0 to 1. Resume at a reduced dose or discontinue LENVIMA depending on the severity and persistence of hemorrhage. Discontinue LENVIMA in patients who experience Grade 4 hemorrhage.
LENVIMA impairs exogenous thyroid suppression. Elevation of TSH level above 0.5 mU/L was observed post baseline in 57% of LENVIMA-treated patients. Monitor TSH levels monthly and adjust thyroid replacement medication as needed.
LENVIMA can cause fetal harm when administered to a pregnant woman. Advise pregnant women of the potential risk to a fetus. Advise females of reproductive potential to use effective contraception during treatment with LENVIMA and for at least 2 weeks following completion of therapy.
Advise women not to breastfeed during treatment with LENVIMA.
The most common adverse reactions observed in LENVIMA-treated patients vs. placebo treated patients respectively were hypertension (73% vs 16%), fatigue (67% vs 35%), diarrhea (67% vs 17%), arthralgia/myalgia (62% vs 28%), decreased appetite (54% vs 18%), weight decreased (51% vs 15%), nausea (47% vs 25%), stomatitis (41% vs 8%), headache (38% vs 11%), vomiting (36% vs 15%), proteinuria (34% vs 3%), palmar-plantar erythrodysesthesia syndrome (32% vs 1%), abdominal pain (31% vs 11%), and dysphonia (31% vs 5%).
For more information about LENVIMA and for the full Product Information visit www.LENVIMA.com.