When the first protein degradation companies announced themselves to the biotech world around 2013, wielding PROTACs — proteolysis targeting chimeras — they promised to break the rules on what proteins were thought to be “druggable.” But a sizable chunk remained stubbornly outside of that realm, out of reach for a technology that works exclusively inside cells: extracellular proteins.

The glaring hole likely explains the “extreme interest” that Carolyn Bertozzi received when her Stanford team posted a preprint describing LYTACs, or lysosome-targeting chimeras. Like PROTACs, they leverage the body’s natural garbage disposal systems; rather than E3 ligases, they make use of the endosome that traffics material to the lysosome.

Keep reading Endpoints with a free subscription

Unlock this story instantly and join 163,600+ biopharma pros reading Endpoints daily — and it's free.

SIGN UP LOG IN

Clay Siegall will be back in the CEO seat, taking the helm of a private startup working on targeted cancer therapies.

It’s been almost a year since Siegall resigned from Seagen, the biotech he co-founded and led for more than 20 years, in the wake of domestic violence allegations by his then-wife. His eventual successor, David Epstein, sold the company to Pfizer in a $43 billion deal unveiled last week.

Keep reading Endpoints with a free subscription

Unlock this story instantly and join 163,600+ biopharma pros reading Endpoints daily — and it's free.

SIGN UP LOG IN

Brii Biosciences said it will stop manufacturing its Covid-19 antibody combination, sold in China, and is working to withdraw its emergency use authorization request in the US, which it started in October 2021.

The Beijing and North Carolina biotech commercially launched the treatment in China last July but is now axing the work and reverting resources to other “high-priority programs,” per a Friday update. The focus now is namely hepatitis B viral infection, postpartum depression and major depressive disorders.

Keep reading Endpoints with a free subscription

Unlock this story instantly and join 163,600+ biopharma pros reading Endpoints daily — and it's free.

SIGN UP LOG IN

A panel of outside advisors to the FDA unanimously recommended that the agency grant accelerated approval to Biogen’s ALS drug tofersen despite the drug failing the primary goal of its Phase III study, an endorsement that could pave a path forward for the treatment.

By a 9-0 vote, members of the Peripheral and Central Nervous System Drugs Advisory Committee said there was sufficient evidence that tofersen’s effect on a certain protein associated with ALS is reasonably likely to predict a benefit for patients. But panelists stopped short of advocating for a full approval, voting 3-5 against (with one abstention) and largely citing the failed pivotal study.

Keep reading Endpoints with a free subscription

Unlock this story instantly and join 163,600+ biopharma pros reading Endpoints daily — and it's free.

SIGN UP LOG IN

Gilead and Pionyr Immunotherapeutics, a biotech trying to follow up on the first generation of checkpoint inhibitors, have “mutually agreed” on a rewrite to their 2020 terms, with Gilead deciding not to buy out the company.

The California biopharma waived its option to acquire the remaining 50.1% of Pionyr, which would have triggered a $315 million upfront payment and up to $1.15 billion down the road. Had Gilead waited to decide, the drugmaker would have had a potential payment to make in the near term under their agreement, a spokesperson said in an email to Endpoints News.

Keep reading Endpoints with a free subscription

Unlock this story instantly and join 163,600+ biopharma pros reading Endpoints daily — and it's free.

SIGN UP LOG IN

Relmada Therapeutics is making changes to its Phase III study of its lead drug for major depressive disorder, in an attempt to avoid problems with a prior trial that showed little difference between the drug and a placebo.

That failure in October wiped 80% from Relmada’s stock price, and was followed by another negative readout a few months later. In both cases, the company said that there had been trial sites that were associated with what it called surprising placebo effects that skewed the results compared with the drug, REL-1017.

Keep reading Endpoints with a free subscription

Unlock this story instantly and join 163,600+ biopharma pros reading Endpoints daily — and it's free.

SIGN UP LOG IN