Novo Nordisk's inflammation-targeting drug missed mark in heart disease study; failed trial dealt setback to obesity push as weight-loss drug stocks slumped below key levels
Markus MannsNovartisCorvidia TherapeuticsNovo NordiskBMO Capital MarketsEli Lilly

Novo Nordisk's inflammation-targeting drug missed mark in heart disease study; failed trial dealt setback to obesity push as weight-loss drug stocks slumped below key levels

Novo Nordisk's experimental anti-inflammatory drug ziltivekimab failed to reduce major heart event risks in a pivotal trial, causing shares to drop 7.3%. The setback complicates the company's efforts to diversify beyond its obesity and diabetes drugs, as weight-loss drug stocks also fell sharply.

STAT STAT+2 sources31 July 2026 · 22:41 UTC
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Novo Nordisk's ziltivekimab, an anti-inflammatory drug, failed to meet the minimum threshold of a 15% relative risk reduction in major adverse cardiovascular events (MACE) during a Phase 3 trial involving over 6,300 patients with heart and kidney diseases.19

"The trial failure increases the pressure to diversify into other disease areas outside of diabetes and obesity," said Markus Manns, a portfolio manager at Union Investment. The disappointing results led to a 7.3% drop in Novo's shares, which fell to 306.50 Danish crowns.

Analysts now view the chances of positive outcomes from two ongoing trials of ziltivekimab as "highly unlikely", raising concerns about Novo's future growth prospects. The company acquired ziltivekimab through a $725 million buyout of Corvidia Therapeutics in 2020, aiming to expand its portfolio beyond obesity and diabetes drugs like Wegovy and Ozempic.

Despite the setback, Novo stated that the trial outcome would not affect its 2026 profit outlook, although it will incur a non-cash impairment charge in Q3.

The failure of ziltivekimab also contributed to a broader slump in weight-loss drug stocks, with competitors like Eli Lilly experiencing declines as well.

"A large-sized deal in the CV/metabolic or rare disease space could help reignite investor interest," analysts from BMO Capital Markets suggested.

Key Insight
“Shares fell 7.3% to 306.50 Danish crowns, and BMO Capital Markets said a large-sized deal in CV/metabolic or rare disease space could help reignite investor interest. Novo expects a non-cash impairment charge in Q3 while keeping its 2026 adjusted operating profit outlook.”
CuriousCats studied:
1
STATSTAT
“Novo Nordisk said Friday that its investigational anti-inflammatory drug did not reduce the risk of major heart events in a pivotal trial, raising questions about the increasingly popular approach of targeting inflammation to prevent cardiovascular complications.”
STAT →
2
ReutersReuters
“Novo Nordisk said on Friday its experimental cardiovascular drug failed to show benefit in a late-stage study, dealing a blow to the Danish drugmaker's efforts to diversify beyond its blockbuster obesity and diabetes drugs.”
Reuters →
3
Investor's Business DailyInvestor's Business Daily
“The leading weight loss drug stocks slumped on Friday amid company updates and ahead of earnings. NVO stock sank under a buy point on trial results. LLY stock briefly dived below support with its report due next week.”
Investor's Business Daily →
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