Revefenacin

Breast Feeding; Lactation; Milk, Human; Parasympatholytics; Muscarinic Antagonists; Bronchodilator Agents

FDA approved drugs -> Active ingredient

FDA approved drugs -> Active ingredient

Warning

H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]

P264, P270, P301+P317, P330, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 2 reports by companies from 1 notifications to the ECHA C&L Inventory.

Warning

H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]

Like other anticholinergic agents, revefenacin has not been linked to episodes of liver enzyme elevations or clinically apparent liver injury. Another reason for its hepatic safety may relate to its low systemic absorption when administered by inhaler.

R - Respiratory system

QR - Respiratory system

Revefenacin has been reported to produce a sustained, long-acting bronchodilation with lower anti-muscarinic-related side effects. In clinical trials, revefenacin demonstrated to be of a long duration of action and low systemic exposure in patients with COPD. Also, it was reported that a dose of 88 mcg can produce a clinically effective bronchodilation measured by through forced expiratory volume in 1s and serial spirometric assessments. In placebo-controlled trials, revefenacin showed a decrease in the use of albuterol rescue inhalers and sustained increases in the peak expiratory flow rate that reached a steady state at a maximum in day 7. As well, there was a reported superior lung selectivity index when compared with other LAMAs such as glycopyrronium and tiotropium which produced a decreased sialagogue effect.

Revefenacin is an inhaled bronchodilator muscarinic antagonist with a long-acting bronchodilation activity. It has been shown to present a high affinity and behaved as a competitive antagonist of the five muscarinic cholinergic receptors. Studies have indicated that revefenacin dissociates significantly slower from the muscarinic receptor M3 (hM3) when compared to the receptor M2 (hM2) which indicates a kinetic selectivity for this subtype. This competitive antagonism produces a suppressive action of the acetylcholine-evoked calcium mobilization and contractile responses in the airway tissue. Lastly, due to the duration of the bronchodilation, revefenacin is considered a long-acting muscarinic antagonist which allows it to be dosed once daily. This response is very important for the therapy of COPD as the main goal is the reduce the frequency and severity of exacerbations which are normally driven by the presence of elevated cholinergic bronchoconstrictor tone mediated by muscarinic receptors on parasympathetic ganglia and airway smooth muscle. Hence, the activity of revefenacin produces a potent and long-lasting protection against the bronchoconstrictor response to acetylcholine or methacholine.

Revefenacin presents a high metabolic liability producing a rapid metabolic turnover after being distributed from the lung. This metabolic process is done primarily via enzymatic hydrolysis via CYP2D6 to its major hydrolytic metabolite THRX-195518.

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REVEFENACIN

Established Pharmacologic Class [EPC] - Anticholinergic

Mechanisms of Action [MoA] - Cholinergic Antagonists

Revefenacin is an Anticholinergic. The mechanism of action of revefenacin is as a Cholinergic Antagonist.

REVEFENACIN

In pharmacokinetic studies, revefenacin was absorbed very rapidly and presented a linear increase in plasma exposure with Cmax, tmax and AUC that ranged between 0.02-0.15 ng/ml, 0.48-0.51 hours and 0.03-0.36 ng.h/ml, respectively. The bioaccumulation of revefenacin was very limited and the steady-state was achieved by day 7.

After reaching maximum concentration, revefenacin concentrations decline in a biphasic manner. This elimination kinetics is observed by a rapid declining plasma concentration followed by a slow apparent bi-exponential elimination. Renal elimination of revefenacin is limited and it presents a mean cumulative amount excreted in urine as the unchanged drug of < 0.2% of the administered dose. Following intravenous revefenacin administration, 54% of the dose is recovered in feces and 27% was recovered in urine which confirms a high hepatobiliary processing.

After intravenous administration of revefenacin, the reported volume of distribution is 218 L which suggests an extensive distribution to the tissues.

The renal clearance of revefenacin is negligible and thus, the clearance rate is not a major parameter for this drug.