Vancouver-based Artms Inc. has raised a $19 million series A round to develop its approach to the production of many of the most commonly used diagnostic imaging isotopes. Its Quantm Irradiation System enables the inexpensive production of medical isotopes using hospital-based cyclotrons.

Atea Pharmaceuticals Inc., of Boston, brought in a $215 million series D financing to support development of its COVID-19 antiviral, which is designed to inhibit the viral RNA polymerase enzyme, a key element in RNA virus replication.

HONG KONG – New York and San Diego-based Zentalis Pharmaceuticals Inc. has gained $20 million in a series A financing round to support a Chinese joint venture called Zentera Therapeutics.

PERTH, Australia – Australian stem cell company Mesoblast Ltd. completed a capital raising of AU$138 million (US$90 million) to scale up manufacturing of its allogeneic cell therapy, remestemcel-L, to treat COVID-19 acute respiratory distress syndrome (ARDS).

BEIJING – Legend Biotech Corp., headquartered in Somerset, N.J., filed with the U.S. SEC last week plans to raise up to $100 million to advance its BCMA-targeting CAR T candidate, LCAR-B38M, by listing on Nasdaq. Legend confidentially submitted a draft registration statement to the regulators in March.

Due to launch in the second half of this year, Rallybio Inc.’s phase I/II study testing RLYB-211 for prevention of fetal and neonatal alloimmune thrombocytopenia (FNAIT) will begin with experiments in men, said Steve Uden, one of the company’s three founders. “The good news is, we can confirm the safety and the pharmacology of this concept in male volunteers before having to start a clinical trial in pregnant mothers,” he told BioWorld.