Molecular Templates Inc. has received IND clearance from the FDA for its novel MT-8421 engineered toxin bodies (ETB) program targeting cytotoxic T-lymphocyte protein 4 (CTLA-4) in patients with relapsed/refractory solid tumors previously exposed to checkpoint inhibitors. MT-8421 is designed to eliminate CTLA-4-expressing regulatory T cells (Tregs) in the tumor microenvironment (TME) through a direct cell-kill mechanism independent of the effector cell presence that antibodies rely upon while not affecting Tregs in the periphery.
The U.S. FDA has accepted Mesoblast Ltd.’s BLA resubmission for its allogeneic stem cell treatment remestemcel-L in children with steroid-refractory acute graft-vs.-host disease (SR-aGVHD). Mesoblast received a complete response letter from the FDA in October 2020 for remestemcel-L even though approval was highly anticipated after the FDA’s Oncologic Drugs Advisory Committee voted 9-1 that the stem cell therapy showed evidence of efficacy as a treatment for SR-aGVHD in children.
Estrella Biopharma Inc. has received FDA clearance of its IND application for lead product candidate EB-103, a T-cell therapy targeting CD19, a protein expressed on the surface of almost all B-cell leukemias and lymphomas.
Noting that the FDA had rejected its previous proposal last year to voluntarily withdraw Makena from the U.S. market, Covis Pharma BV is again offering to voluntarily withdraw the drug, which is the only drug approved to reduce the risk of preterm birth. Along with its offer, the company asked the agency “to allow for an orderly wind-down that would best serve the interests of the patients,” according to a March 6 letter from Covis’ attorney to FDA Commissioner Robert Califf and Namandjé Bumpus, the agency’s chief scientist.
Shares of Veru Inc. hit a 52-week low March 3 after the U.S. FDA declined to grant an emergency use authorization (EUA) for sabizabulin for use in hospitalized adults with moderate to severe COVID-19 who are at high risk for acute respiratory distress syndrome. The decision comes as little surprise, given the negative advisory panel vote in November, but the agency’s wording might suggest potential use for the microtubule disruptor in the future.
The U.S. development path for rare disease treatments is strewn with numerous challenges, not least of which are the regulatory hurdles. For companies developing promising candidates to treat ultra-rare diseases and the patients who are running out of time, the regulatory obstacles in the U.S. may seem almost insurmountable. And new concerns about drug development in general could make those barriers even higher.
Although the U.S. FDA’s Vaccines and Related Biological Products Advisory Committee (VRBPAC) voted unanimously, 12-0, March 1 that the data GSK plc presented was adequate to support the safety of its respiratory syncytial virus vaccine, several panelists cautioned the FDA against viewing the vote as a recommendation to license the vaccine before more data are available.
The U.S. FDA issued Cytokinetics Inc. a complete response letter (CRL) for omecamtiv mecarbil, branding the clinical evidence behind it as not “persuasive” enough to establish its effectiveness for reducing the risk of heart failure events and cardiovascular death. The company is developing the drug as an add-on therapy for patients with worsening heart failure who remain at high risk for heart failure events and hospitalization.
After a long and bumpy road to approval, Reata Pharmaceuticals Inc. is to roll out the first treatment for Friedreich’s ataxia in the U.S. for patients ages 16 and older after the FDA gave its anti-inflammatory drug, Skyclarys (omaveloxolone), the green light.
RSS
