Seaport Therapeutics Inc. has followed up its recent fundraiser with an oversubscribed $225 million series B financing that will help set it on the path to a phase IIb study in major depressive disorder. The company’s lead candidate is allopregnanolone, an endogenous neurosteroid that is taken orally and bypasses the liver. Once it is absorbed through the lymphatic system, allopregnanolone enters through a pathway that avoids the liver and the possibility of hepatoxicity and elevated liver enzyme counts, Michael Chen, Seaport’s chief scientific officer, told BioWorld.

The founding CEO of Alnylam Pharmaceuticals Inc. is now leading the charge with newly launched City Therapeutics Inc., which just completed a $135 million series A financing. City’s executive chair, John Maraganore, will be in familiar territory as the new company plans to develop RNAi-based medicines using next-generation siRNA engineering. He expects dozens of these therapies to reach the market in a relatively short period of time, not just from City Therapeutics but from other companies. It’s a period in the development timeline that he finds reminiscent of the rise and development of monoclonal antibodies.

Booster Therapeutics is ready to open up a new arm of the proteasome after raising $15 million in seed funding to advance small molecules it says can degrade multiple types of harmful proteins. Rather than tagging single disease proteins with a ubiquitin marker for degrading via 26S proteasomes, these compounds directly activate 20S proteasomes that naturally recognize disordered proteins without the need for ubiquitin tagging.

Judo Bio Inc. emerged from stealth mode and rolled out data showing the value of using megalin receptors for intracellular delivery of ligand-small interfering RNA (siRNA) therapeutics to the kidney as a way of reducing expression of the targeted genes.

In one of the top series A financings in biopharma history, new company Kailera Therapeutics Inc. emerged with $400 million raised and a pipeline of next-generation assets to treat obesity and type 2 diabetes.

A drive to overcome the limitations of traditional antibodies led Toronto-based scientists Jean-Philippe Julien and Bebhinn Treanor to work toward discovering a multivalent, multispecific platform to develop therapies that can reach difficult targets. As a result, through the support of VC firm Amplitude Ventures, Radiant Biotherapeutics emerged in 2020 armed with what has become its Multabody platform.

Candid Therapeutics Inc. launched with ex-China control of two bispecific T-cell engager antibodies that it plans to develop for autoimmune diseases. The San Diego-based company will start off with a pocketful of cash, having raised over $370 million for the development of the in-licensed candidates.

Artificial intelligence (AI) drug discovery company Noetik Inc. has closed on an oversubscribed $40 million series A financing round. The company plans to use the money to expand its atlas of human cancer biology with its in vivo CRISPR platform to advance a pipeline of cancer therapeutics to the clinic. In describing its approach, the company said that making a genuine impact on drug discovery requires computational capabilities to understand and simulate disease biology at the patient level, identifying the right targets and matching them with the right therapies.

Diakonos Oncology Corp. has developed a process to manufacture dendritic cell vaccines that the company believes are substantially more potent than its predecessors.

After sparking further interest from investors after the close of its series A, Vandria SA has extended the round and now has the means to advance its lead mitophagy inducer program as far as phase Ib/IIa development in the treatment of mild cognitive impairment.