PMID- 34585991 OWN - NLM STAT- MEDLINE DCOM- 20211108 LR - 20220531 IS - 1744-7593 (Electronic) IS - 1742-5247 (Linking) VI - 18 IP - 11 DP - 2021 Nov TI - Safety of recombinant human hyaluronidase PH20 for subcutaneous drug delivery. PG - 1673-1685 LID - 10.1080/17425247.2021.1981286 [doi] AB - INTRODUCTION: The glycosaminoglycan hyaluronan forms a gel-like substance, which presents a barrier to bulk fluid flow in the subcutaneous (SC) space, limiting SC drug delivery volume and administration rates. Recombinant human hyaluronidase PH20 (rHuPH20) acts locally to temporarily remove this barrier, facilitating rapid SC delivery of large volumes and/or high doses of sequentially or co-administered therapeutics. AREAS COVERED: An extensive clinical and post-marketing dataset of safety and immunogenicity of rHuPH20 in its current applications with approved therapeutics demonstrates that rHuPH20 acts locally, without measurable systemic absorption at the SC doses used in the approved products, and is well tolerated in combination with several co-administered therapeutic agents across diverse patient groups. The immunogenicity profile demonstrates no adverse effects associated with treatment-emergent rHuPH20 antibody responses. Immunogenicity to monoclonal antibodies co-formulated with rHuPH20 shows no clinical difference between SC and intravenous administration. Safety assessments of patient subsets for special populations, including children, elderly patients, and pregnant women, raise no additional safety concerns. EXPERT OPINION: The benefits of SC administration for patients and healthcare systems often outweigh those of intravenous administration, driving future initiation of SC-only drug development programs. Injection devices allowing large-volume SC administration could be facilitated by incorporating co-formulated biologics containing rHuPH20. FAU - Knowles, Stephen P AU - Knowles SP AD - Halozyme Therapeutics, Inc, San Diego, CA, USA. FAU - Printz, Marie A AU - Printz MA AD - Halozyme Therapeutics, Inc, San Diego, CA, USA. FAU - Kang, David W AU - Kang DW AD - Halozyme Therapeutics, Inc, San Diego, CA, USA. FAU - LaBarre, Michael J AU - LaBarre MJ AD - Halozyme Therapeutics, Inc, San Diego, CA, USA. FAU - Tannenbaum, Renee P AU - Tannenbaum RP AD - Halozyme Therapeutics, Inc, San Diego, CA, USA. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210929 PL - England TA - Expert Opin Drug Deliv JT - Expert opinion on drug delivery JID - 101228421 RN - 0 (Pharmaceutical Preparations) RN - 0 (Recombinant Proteins) RN - EC 3.2.1.35 (Hyaluronoglucosaminidase) SB - IM MH - Aged MH - Child MH - Drug Delivery Systems MH - Female MH - Humans MH - *Hyaluronoglucosaminidase MH - Injections, Subcutaneous MH - *Pharmaceutical Preparations MH - Pregnancy MH - Recombinant Proteins OTO - NOTNLM OT - Immunogenicity OT - monoclonal antibody OT - recombinant human hyaluronidase PH20 OT - safety OT - subcutaneous injection EDAT- 2021/09/30 06:00 MHDA- 2021/11/09 06:00 CRDT- 2021/09/29 12:15 PHST- 2021/09/30 06:00 [pubmed] PHST- 2021/11/09 06:00 [medline] PHST- 2021/09/29 12:15 [entrez] AID - 10.1080/17425247.2021.1981286 [doi] PST - ppublish SO - Expert Opin Drug Deliv. 2021 Nov;18(11):1673-1685. doi: 10.1080/17425247.2021.1981286. Epub 2021 Sep 29.