Petition Asks Trulance Labeling Additions

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Hyman, Phelps & McNamara says that labeling for Synergy Pharmaceuticals’ Trulance (plecanatide), approved 1/19 to treat chronic idiopathis constipation in adults, fails to contain sufficient side effect information regarding diarrhea. In a citizen petition to FDA, the Washington-based law firm asks that Synergy be required to add additional statements.

“On the basis of publicly available information, we believe the approved Trulance PI fails to include adequate information for its use because it omits important safety information in its presentation of the incidence of diarrhea adverse events reported in clinical trials,” the petition says. “Specifically, the Trulance PI reports an incidence rate of diarrhea adverse events that is inaccurate without further characterization.”

The petition asks that FDA require Synergy to add a footnote stating that the actual rates of diarrheas in the Trulance clinical studies are higher and that the rates shown include only diarrhea reported to be bothersome or if the event required treatment or hospitalization.

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