Rarely does the FDA publicly release its reasoning for rejecting a potential new drug. But for DC-based Vanda Pharmaceuticals’ gastroparesis drug, the FDA on Wednesday spelled out why it issued a CRL
last September
.
One of the pivotal trials for tradipitant, in-licensed from Eli Lilly more than a decade ago, failed to show a statistically significant difference between it and placebo on a nausea severity scale
,
the FDA said in a
Federal Register notice
.
“The estimated difference between tradipitant and placebo for these endpoints was generally close to zero, except for the nausea-free days endpoint, which numerically favored placebo at Week 12.”
Vanda disclosed the Phase 3 gastroparesis study’s
failure to beat out the placebo
, with 12 weeks worth of results, in 2022.
Data from another tradipitant trial submitted to support its approval were not persuasive due to “methodological shortcomings with the analysis that could bias results,” the FDA said in the notice.
Vanda may request a hearing before the FDA commissioner on CDER’s rejection of tradipitant.
The company has been locked in lawsuits with the FDA around
tradipitant
and
a sleep disorder drug
, and last week it
published an open letter
to Commissioner Rob Califf, in which CEO Mihael Polymeropoulos decries the way the agency’s “opacity in decision making and oversight has allowed a culture of obfuscation and closemindedness to fester at FDA.”
Wall Street analysts at Stifel and Jefferies in 2018
projected
hundreds of millions of sales of tradipitant.
“FDA is wrong,” a spokesperson for Vanda told
Endpoints News
via email. “FDA must evaluate all scientific evidence put before it. And FDA’s approach is dangerous. It will result in the American public being denied access to effective therapeutics.”