politics
Scientists question how much gene Sarepta’s therapy actually delivers
Some scientists are questioning a calculation that was a key part of Sarepta Therapeutics’ ability to win FDA approval for its gene therapy for Duchenne muscular dystrophy.
In its studies, Sarepta took muscle biopsies from patients and measured how much microdystrophin — a mini version of the gene broken in Duchenne — is present. Sarepta has said that treated patients produce roughly one-third of the amount of microdystrophin as healthy humans have of the full-length protein.
But that number may be misleading, a group of researchers wrote last month in a letter to the editor in Neurology. If so, then families of patients may have a warped view of how much benefit the therapy can confer.
Read more from STAT's Jason Mast.
financing
New startup wants to make novel bispecific antibodies for immune diseases
From my colleague Jonathan Wosen: Bispecific antibodies have generated intense interest among cancer researchers and investors, with observers hopeful these Y-shaped immune proteins, which latch onto two different targets at once, could be potent and precise treatments. A new biotech believes this same therapeutic class could transform the treatment of immune-mediated diseases.
Dualitas Therapeutics, based in South San Francisco, launched today and announced that it raised $65 million in a Series A round. While some companies are repurposing bispecifics originally developed for cancer, Dualitas’ core technology revolves around screening for promising candidates that target novel target pairs. “There are no ‘me too’ combinations in what we're finding. These are truly different, novel biologies you wouldn't find in other portfolios out there,” co-founder Forbes Huang, COO and CBO, said in an interview.
The firm has two lead preclinical assets, one for rheumatoid arthritis and another for allergic asthma. (It has yet to disclose the drugs’ targets). It plans to advance one of these therapies on its own and identify a development partner for the other.