Not irritating intradermally and nonsensitizing in guinea pigs
“Guinea pig studies with Defencath showed that the product was not irritating when injected intradermally and it was nonsensitizing in these animals.”
✓ VerifiedFDA multi-discipline review, p. 46Source ↗
Biodistribution & persistence
Not studied; ADME/PK studies not conducted given negligible systemic exposure
“ADME/PK studies were not conducted with Defencath because the product is not intended for systemic administration and clinical exposure to its components is negligible when used as directed.”
✓ VerifiedFDA multi-discipline review, p. 43Source ↗
Modality-specific risk
In vitro genotoxicity of taurolidine; risk judged low at clinical exposures
“At the levels where taurolidine exposure could be achieved in the clinic during use of the Defencath CLS, the risk of genotoxicity appears low.”
✓ VerifiedFDA multi-discipline review, p. 41Source ↗
Anti-drug antibodies: animals
No immunogenicity evaluations conducted in the development program
“No immunogenicity/antigenicity evaluations were conducted as part of this development program.”
✓ VerifiedFDA multi-discipline review, p. 96Source ↗
Anti-drug antibodies: patients
Not evaluated; no immunogenicity/antigenicity evaluations conducted
“No immunogenicity/antigenicity evaluations were conducted as part of this development program.”
✓ VerifiedFDA multi-discipline review, p. 96Source ↗