Little more than a month after the U.S. FDA approved the first gene therapy for adults with hemophilia B, Uniqure NV’s Hemgenix, strong phase III data have come from Pfizer Inc. The Pfizer results show fidanacogene elaparvovec, a vector containing an AAV capsid and a high-activity human coagulation factor IX (FIX) gene for treating adult men with moderately severe to severe hemophilia B, hit the primary endpoint in the phase III Benegene-2 study. The one-time therapy is designed to allow those living with hemophilia B to be able to produce FIX instead of receiving regular, ongoing doses of exogenous FIX.

Takeda Pharmaceutical Co. Ltd.'s oral antiviral, maribavir, failed to meet the primary endpoint of noninferiority compared to Roche Holding AG’s valganciclovir in the phase III Aurora study for cytomegalovirus (CMV) infection in hematopoietic stem cell transplant recipients. The multicenter, randomized, double-blind, double-dummy, active-controlled study was to form the basis for a future label expansion for the therapy.

Takeda Pharmaceutical Co. Ltd.'s oral antiviral, maribavir, failed to meet the primary endpoint of noninferiority compared to Roche Holding AG’s valganciclovir in the phase III Aurora study for cytomegalovirus (CMV) infection in hematopoietic stem cell transplant recipients. The multicenter, randomized, double-blind, double-dummy, active-controlled study was to form the basis for a future label expansion for the therapy.

Women’s health startup May Health SAS has completed treatment of the first five participants in a U.S. feasibility study of its investigational Ovarian Rebalancing technique, a one-time, ultrasound-guided, transvaginal ablation procedure for women with polycystic ovary syndrome (PCOS). The novel treatment is designed to jumpstart the ovaries into releasing mature eggs in normal monthly cycles in women with PCOS-associated infertility.

Repeat expansions of two or more base pairs cause dozens of neurological disorders – Huntington’s disease, which is caused by an expansion of the triplet CAG in the coding sequence for huntingtin, is perhaps the most famous one. Now, investigators at Stanford University have shown that cancer genomes, too, frequently feature repeat expansions.

While new data from Arcus Biosciences Inc. and Gilead Sciences Inc. didn't do much to calm an unsteady development corridor, researcher, developers and analysts still hold out hope for the TIGIT pathway. The Arcus-Gilead randomized phase II study combining anti-TIGIT domvanalimab and anti-PD1 antibodies for treating first-line, metastatic non-small-cell lung cancer produced positive results, including improvements in median progression-free survival (PFS) and six-month landmark PFS rates vs. monotherapy. But a hefty dent in Arcus' shares provide a reminder of TIGIT’s fragility as a field, and a reminder of the phase III failure in May for Roche Holding AG unit Genentech Inc.'s anti-TIGIT immunotherapy tiragolumab, which dragged down the share value of several other class entrants. Arcus stock (NASDAQ:RCUS) dipped deeply on Dec. 20 on the new data’s release, but rallied on Dec. 21 by closing 7.5% upward at $22.15 each.