myopathy or persistent asymptomatic LV dysfunction of >20% from baseline that is below LLN that does not resolve within 4 weeks, permanently discontinue MEKINIST and withhold TAFINLAR. Resume TAFINLAR at the same dose on the recovery of cardiac function to at least the institutional LLN for LVEF and absolute decrease ≤10% compared with baseline.
Ocular Toxicities.
Retinal Vein Occlusion (RVO): Across all clinical trials including MEKINIST, the incidence of RVO was 0.2%. RVO may lead to macular edema, decreased visual function, neovascularization, and glaucoma.
Urgently(within 24 hours) perform ophthalmologic eva luation for patient-reported loss of vision or other visual disturbances. Permanently discontinue MEKINIST in patients with documented RVO.
Retinal Pigment Epithelial Detachment (RPED): RPED can occur. Retinal detachments may be bilateral and multifocal, occurring in the central macular region of the retina or elsewhere in the retina. In the COMBI-d study, routine monitoring of patients to detect asymptomatic RPED was not conducted; therefore, the true incidence of this finding is unknown.
Perform ophthalmologic eva luation periodically, and at any time a patient reports visual disturbances. Withhold MEKINIST if RPED is diagnosed. If resolution of the RPED is documented on repeat ophthalmologic eva luation within 3 weeks, resume MEKINIST. Reduce the dose or discontinue MEKINIST if no improvement after 3 weeks.
Uveitis: Uveitis occurred in 2% of patients treated with the combination across metastatic melanoma trials. Treatment employed in clinical trials included steroid and mydriatic ophthalmic drops.
Monitor patients for visual signs and symptoms of uveitis (eg, change in vision, photophobia, and eye pain). If iritis is diagnosed, administer ocular therapy and continue TAFINLAR without dose modification; for severe uveitis or iridocyclitis, interrupt TAFINLAR and treat as clinically indicated. Permanently discontinue TAFINLAR for persistent grade 2 or greater uveitis of >6 weeks duration.
Interstitial Lung Disease (ILD). In clinical trials of MEKINIST as a single agent, ILD or pneumonitis occurred in 2% of patients. In the NSCLC study, 2.2% of patients receiving TAFINLAR with MEKINIST developed pneumonitis.
Withhold MEKINIST in patients presenting with new or progressive pulmonary symptoms and findings including cough, dyspnea, hypoxia, pleural effusion, or infiltrates pending clinical investigations. Permanently discontinue MEKINIST for patients diagnosed with treatment-related ILD or pneumonitis.
Serious Febrile Drug Reactions. The incidence and severity of pyrexia are increased when the combination is used compared with TAFINLAR as a single agent.
In patients treated with the combination in the metastatic melanoma studies, the incidence of fever was 54% and serious febrile reactions and fever of any severity complicated by severe rigors/chills, hypotension, dehydration, renal failure, or syncope occurred in 17%. About half of the patients on combination therapy who experienced pyrexia had 3 or more discrete episodes. Fever was complicated by severe chills/rigors in 0.4%, dehydration in 1.8%, renal failure in 0.5%, and syncope in 0.7% in patients receiving the combination.
Withhold TAFINLAR for fever of 101.3ºF or higher. Withhold MEKINIST for fever higher than 104ºF. Withhold TAFINLAR and MEKINIST for any serious febrile reaction or fever complicated by hypotension, rigors or ch |
