Catalym GmbH has closed a $150 million series D to take its first in class immune potentiator visugromab into phase IIb development in a number of solid tumors. The round follows on the heels of data from a phase I/IIa trial which showed visugromab in combination with the PD-1 inhibitor antibody Opdivo (nivolumab, Bristol Myers Squibb) increased T-cell infiltration and generated durable antitumor responses in patients who had exhausted all other treatment options.