MASH Stocks: Could Roche's Deal Spark More M&A?

Author avatar

Aimee Silverwood | Financial Analyst

Published on 21 September 2025

Summary

  • Roche's $3.5 billion acquisition of 89bio signals major pharmaceutical interest in MASH stocks.
  • The growing MASH market, driven by the obesity epidemic, presents a significant investment opportunity.
  • The deal could spark a wave of M&A, making smaller clinical-stage biotech companies attractive targets.
  • Investors are watching key clinical trials, which could drive valuations and future acquisitions in the sector.

Big Pharma's Next Hunt: The Liver Disease Gold Rush

Let’s be honest, big pharmaceutical companies don’t get out of bed for small change. So when a giant like Roche splashes out a cool $3.5 billion on a company that hasn’t even brought a product to market yet, I tend to sit up and take notice. The target was 89bio, a biotech firm working on a treatment for a rather unpleasant and increasingly common condition called MASH. And to me, this deal wasn't just a transaction, it was a starting pistol being fired on a whole new race.

An Unfashionable Ailment Worth Billions

MASH, or metabolic dysfunction-associated steatohepatitis if you want the full mouthful, is the sort of disease that doesn't get much glamorous press. It’s a severe form of fatty liver disease, closely linked to the obesity and diabetes epidemics that are, frankly, running rampant. It’s an ailment born of too many takeaways and not enough long walks. But here’s the kicker for investors, it affects millions of people, with some estimates putting the number at 6.5 million in the US alone, and until very recently, there were no approved treatments. None.

This is what we call an unmet medical need, and where there’s a need, there’s a colossal market waiting to be tapped. Roche didn’t just buy a promising drug candidate in pegozafermin, it bought a ticket to a potential multi-billion dollar lottery. The sheer size of the patient population means that any company which successfully develops an effective treatment is sitting on a goldmine.

When a Giant Wades In

Roche’s move changes the entire game. It’s like when the first fancy organic supermarket opens on a forgotten high street. Suddenly, everyone else has to reassess their strategy. Other pharmaceutical behemoths, who were perhaps watching from the sidelines, are now under pressure to make their own move or risk being left behind. This single acquisition validates the entire field, signalling that the science is sound and the commercial opportunity is very, very real.

For the smaller biotech companies toiling away in this space, the Roche deal is a beacon of hope. It sets a precedent, a benchmark for what a promising MASH treatment could be worth. Suddenly, their years of research and eye-watering cash burn don’t look so speculative. They look like potential takeover targets.

Placing Your Bets on the Biotech Derby

This brings us to the interesting part. With 89bio now off the table, who’s next? Companies like Madrigal Pharmaceuticals and Altimmune are suddenly in the spotlight, their own MASH programmes looking a lot more valuable than they did a few months ago. The question on every investor's lips now is who might be next. It’s a topic we’ve explored in our basket, MASH Stocks: Could Roche's Deal Spark More M&A?, and it highlights a handful of smaller players suddenly looking rather appealing.

Of course, this is not a game for the faint of heart. Investing in clinical-stage biotechs is high-stakes poker, not a gentle punt on the horses. These companies are burning through cash, and their entire future hinges on the outcome of clinical trials, which can, and often do, fail spectacularly. But Roche’s $3.5 billion cheque has shown what a winning hand could be worth. The potential for M&A activity has just gone through the roof, and for investors with an appetite for risk, that makes things very interesting indeed.

Deep Dive

Market & Opportunity

  • The global MASH treatment market could reach tens of billions of dollars.
  • Metabolic dysfunction-associated steatohepatitis (MASH) affects an estimated 6.5 million Americans.
  • Roche acquired 89bio, a clinical-stage asset, for $3.5 billion, setting a valuation benchmark for the sector.
  • MASH is projected to become the leading cause of liver transplants within the next decade.
  • The market is driven by rising global obesity and diabetes rates, which are linked to the development of MASH.

Key Companies

  • 89Bio Inc (ETNB): Developed pegozafermin, a drug candidate for MASH treatment that prompted its acquisition by Roche.
  • Madrigal Pharmaceuticals, Inc. (MDGL): Developing resmetirom, a potential MASH treatment that targets a different therapeutic pathway.
  • Altimmune Inc (ALT): A clinical-stage company with a pipeline of metabolic disease treatments, including for MASH.

View the full Basket:MASH Stocks: Could Roche's Deal Spark More M&A?

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Primary Risk Factors

  • Drug development is unpredictable, and promising treatments can fail in late-stage clinical trials.
  • Most MASH treatments are still in Phase 2 or Phase 3 trials, carrying significant clinical and regulatory risk.
  • Competition is intensifying as more companies enter the MASH treatment space.
  • Investor enthusiasm could decrease if early treatments prove less effective than expected or if safety concerns emerge.
  • All investments carry risk and you may lose money.

Growth Catalysts

  • Increased merger and acquisition activity is expected, following Roche's acquisition of 89bio.
  • The large and growing patient population creates a substantial commercial opportunity.
  • The regulatory pathway for MASH treatments is becoming clearer as the FDA recognises the significant unmet medical need.
  • The complexity of MASH suggests there may be room for several successful therapies, not just one winner.
  • Demographic trends, such as ageing populations and rising obesity rates, provide long-term tailwinds for the sector.

How to invest in this opportunity

View the full Basket:MASH Stocks: Could Roche's Deal Spark More M&A?

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Frequently Asked Questions

This article is marketing material and should not be construed as investment advice. No information set out in this article be considered, as advice, recommendation, offer, or a solicitation, to buy or sell any financial product, nor is it financial, investment, or trading advice. Any references to specific financial product or investment strategy are for illustrative / educational purposes only and subject to change without notice. It is the investor’s responsibility to evaluate any prospective investment, assess their own financial situation, and seek independent professional advice. Past performance is not indicative of future results. Please refer to our Risk Disclosure.

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