Opdivo® is the first and only PD-1 inhibitor approved for subcutaneous (SC) use in the European Union SAN DIEGO, May 28, 2025 /PRNewswire/ -- Halozyme Therapeutics, Inc. (NASDAQ: HALO) (Halozyme) today announced that Bristol Myers Squibb received European Commission (EC) approval of a new Opdivo® (nivolumab) subcutaneous formulation developed with ENHANZE®, Halozyme's proprietary recombinant human hyaluronidase enzyme (rHuPH20), for use across multiple adult solid tumors as monotherapy, monotherapy maintena ...