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News

Linaclotide for the management of irritable bowel syndrome with constipation

This month's publication of Alimentary Pharmacology & Therapeutics examines the use of linaclotide for the management of irritable bowel syndrome with constipation

News image

Irritable bowel syndrome with constipation (IBS-C) represents a significant burden to patients and healthcare systems due to its prevalence and lack of successful symptomatic resolution with established treatment options.

Linaclotide 290 μg has recently been approved by the European Medicines Agency (EMA) for moderate-to-severe IBS-C and by the US Food and Drug Administration for IBS-C (290 μg dose) and for chronic constipation (145 μg dose).

Drs Layer and Stanghellini from Germany summarized data leading to the approval of linaclotide for IBS-C, with focus on EMA-pre-specified outcome measures.

Literature search of a peer-review database (PubMed) and review of congress abstracts on linaclotide preclinical and clinical trial data in IBS-C.

The most frequent side effect, diarrhea, results from the therapeutic action of linaclotide
Alimentary Pharmacology & Therapeutics

Preclinical studies suggest that the guanylate cyclase C agonist (GCCA) linaclotide acts through elevation of cyclic guanosine monophosphate (cGMP) levels, leading to accelerated gastrointestinal (GI) transit through increased fluid secretion and reduced visceral hypersensitivity.

Clinical trial data demonstrate that linaclotide improves abdominal symptoms (pain, bloating) and bowel symptoms (constipation) compared with placebo in patients with IBS-C.

The researchers found that the most frequent side effect, diarrhea, results from the therapeutic action of linaclotide.

The team observed that linaclotide acts locally in the GI tract with minimal systemic exposure, resulting in low oral bioavailability, and thus a low risk of relevant systemic adverse effects.

Dr Layer and colleague concludes, "Linaclotide, a first-in-class GCCA, is a promising new drug with a novel, dual mechanism of action that, unlike more well-established agents, can relieve the abdominal pain, bloating and constipation associated with IBS-C and has a low propensity for systemic side effects."

Aliment Pharmacol Ther 2014: 39(4): 371–384
04 February 2014

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