Drug Interactions between mipomersen and nintedanib

GENERALLY AVOID: Coadministration with alcohol may increase the risk of hepatotoxicity associated with the use of mipomersen. Mipomersen can cause elevations in serum transaminases and hepatic steatosis. In a premarketing clinical trial, 12% (4/34) of patients treated with mipomersen had at least one elevation in alanine aminotransferase (ALT) 3 times the upper limit of normal (ULN) or greater, and 9% (3/34) had at least one elevation in ALT 5 times ULN or greater, compared to 0% of the 17 patients treated with placebo. There were no concomitant clinically meaningful elevations of total bilirubin, international normalized ratio (INR), or partial thromboplastin time (PTT). Mipomersen also increases hepatic fat, with or without concomitant increases in transaminases. In clinical trials of patients with heterozygous familial hypercholesterolemia and hyperlipidemia, the median absolute increase in hepatic fat was 10% after 26 weeks of treatment, from 0% at baseline, measured by magnetic resonance imaging. The long-term consequences of hepatic steatosis associated with mipomersen therapy are unknown. Hepatic steatosis may be a risk factor for progressive liver disease, including steatohepatitis and cirrhosis.

MANAGEMENT: Since alcohol may increase levels of hepatic fat and induce or exacerbate liver injury, the manufacturer recommends that patients taking mipomersen not consume more than one alcoholic drink per day.

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ADJUST DOSING INTERVAL: Food enhances the oral bioavailability of nintedanib. After food intake, nintedanib exposure increased by approximately 20% compared to administration under fasted conditions. Absorption was also delayed, as indicated by an increase in the median time to reach maximum plasma concentration (Tmax) from 2 hours in the fasted state to approximately 4 hours under fed conditions, irrespective of the type of food ingested. In an in vitro study, mixing nintedanib capsules with a small amount of apple sauce or chocolate pudding for up to 15 minutes did not have any impact on their pharmaceutical quality, but swelling and deformation of the capsules were observed with longer exposure time due to water uptake of the gelatin capsule shell. Therefore, administration with soft food would not be expected to alter the clinical effect of nintedanib when taken immediately.

GENERALLY AVOID: Grapefruit and grapefruit juice may increase the plasma concentrations of nintedanib, which has been shown to be a substrate of the P-glycoprotein (P-gp) efflux transporter and a minor substrate of the CYP450 3A4 isoenzyme. The proposed mechanism is inhibition of both P-gp-mediated efflux in the gut wall as well as CYP450 3A4-mediated first-pass metabolism in the intestinal tract by certain compounds present in grapefruit.

MANAGEMENT: Nintedanib should be administered with food to reduce the incidence of gastrointestinal effects. Nintedanib capsules may be taken with a small amount (teaspoonful) of cold or room temperature soft food, such as apple sauce or chocolate pudding, and must be swallowed whole (unchewed) immediately, to ensure the capsule stays intact. Food containing grapefruit, grapefruit juice, or Seville oranges should be avoided during treatment with nintedanib.

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