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NYC biotech LB Pharmaceuticals eyes $75M for new take on decades-old schizophrenia drug
As Karuna Therapeutics wraps up its FDA approval request for what could be the first new type of schizophrenia drug in decades, another East Coast biotech…

As Karuna Therapeutics wraps up its FDA approval request for what could be the first new type of schizophrenia drug in decades, another East Coast biotech is raising $75 million to test an adjusted version of a decades-old medicine for the disorder next year.
LB Pharmaceuticals has secured about $35 million so far and expects another $40 million in the round, according to an SEC filing on Thursday. Per the financial document, its board includes directors associated with Vida Ventures, Pontifax, Deep Track Capital and TCGX, a crossover firm that has invested in multiple nine-figure biotech financings in recent months, including Carmot Therapeutics, Alkeus and Upstream Bio.
LB declined to comment.
The New York City biotech plans to run a Phase II trial of a chemically differentiated form of amisulpride, a D2 and D3 antagonist that has been available in Europe and more than 50 countries for decades, according to an investor deck from June. Sanofi marketed it as Solian, which generated €135 million in sales in 2002 for the French Big Pharma. It’s since become available as a generic.
LB’s board includes Piero Poli, CEO of Swiss drugmaker Rivopharm, which produces generic amisulpride. In February 2020, Acacia Pharma secured FDA approval for an IV formulation of amisulpride in certain postoperative patients with nausea, marketing it as Barhemsys.
With its methylated version of amisulpride, LB says its oral asset LB-102 has the potential to be more effective at lower doses by improving blood-brain barrier permeability, per the investor deck. Its new chemical structure gives LB-102 IP protection until “at least 2037.” LB has positioned the drug as a blockbuster treatment that could generate $1 billion or more in annual sales, pointing to antipsychotic prescriptions in the EU with an average price of $2,000 per month.
The drug is set to go into Phase II testing in adults with acute schizophrenia in the first quarter of next year, per the June document.
The company expects to enroll about 350 people at 25 sites, testing whether three doses of the drug are better than placebo based on the commonly used schizophrenia clinical trial measure known as PANSS, or Positive and Negative Syndrome Scale. Karuna’s M1/M4-preferring muscarinic agonist KarXT has passed two Phase III trials that use that measure, leading to massive financing hauls for the biotech and Cerevel Therapeutics. Boston-based Karuna plans to submit its approval request to the FDA this quarter. Meanwhile, Sumitomo and Otsuka’s ulotaront failed a Phase III on the PANSS test two months ago.
LB expects the study to focus on in-patients for four weeks. Pending the mid-stage results, the company would likely then take LB-102 into multiple Phase III trials in 2025, with plans to submit an NDA in 2028, per the June presentation. The company sees schizophrenia as the first step, with potential for studies in depression, bipolar depression and other indications.
The drug developer is led by a former family office manager, CEO Zachary Prensky. LB’s medical chief is Anna Eramo, who previously ran clinical and medical affairs at Lundbeck’s US operations and worked on the development of Rexulti, approved for schizophrenia and other indications. Science chief Andrew Vaino and chief financial officer Marc Panoff were previous executives at Retrophin.
Prensky co-founded LB with Vincent Grattan, a pharmacist who came across amisulpride in the 2000s while working on medication managements in multiple prisons. “As many are aware, correctional facilities are de facto mental health hospitals, and I wanted to make sure we were stocking the most reliable medications,” he told Psychiatric News in 2021.
depression treatment testing fda medication europe euInternational
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