There are many factors that can influence the pharma- cokinetics （PK） of a mAb or Fc-fusion molecule with the primary determinant being FcRn-mediatad recycling. Through Fab or Fc engineering, IgG-FcRn interaction ca...There are many factors that can influence the pharma- cokinetics （PK） of a mAb or Fc-fusion molecule with the primary determinant being FcRn-mediatad recycling. Through Fab or Fc engineering, IgG-FcRn interaction can be used to generate a variety of therapeutic anti. bodies with significantly enhanced half-life or ability to remove unwanted antigen from circulation, Glycosyla- tion of a mAb or Fc.fusion protein can have a significant impact on the PK of these molecules, mAb charge can be important and variants with pl values of 1-2 unit difference are likely to impact PK with lower pl values being favorable for a longer half.life. Most mAbs display target mediated drug disposition （TMOO）, which can have significant consequences on the study designs of preclinical and clinical studies. The PK of mAb can also be influenced by anti-drug antibody （ADA） response and off.target binding, which require careful consideration during the discovery stage, mAbs are primarily absor- bed through the lymphatics via convection and can be conveniently administered by the subcutaneous （sc） route in large doses/volumes with co-formulation of hyaluronidase. The human PK of a mAb can be rea- sonably estimated using cynomolgus monkey data and allometric scaling methods.展开更多
文摘There are many factors that can influence the pharma- cokinetics （PK） of a mAb or Fc-fusion molecule with the primary determinant being FcRn-mediatad recycling. Through Fab or Fc engineering, IgG-FcRn interaction can be used to generate a variety of therapeutic anti. bodies with significantly enhanced half-life or ability to remove unwanted antigen from circulation, Glycosyla- tion of a mAb or Fc.fusion protein can have a significant impact on the PK of these molecules, mAb charge can be important and variants with pl values of 1-2 unit difference are likely to impact PK with lower pl values being favorable for a longer half.life. Most mAbs display target mediated drug disposition （TMOO）, which can have significant consequences on the study designs of preclinical and clinical studies. The PK of mAb can also be influenced by anti-drug antibody （ADA） response and off.target binding, which require careful consideration during the discovery stage, mAbs are primarily absor- bed through the lymphatics via convection and can be conveniently administered by the subcutaneous （sc） route in large doses/volumes with co-formulation of hyaluronidase. The human PK of a mAb can be rea- sonably estimated using cynomolgus monkey data and allometric scaling methods.
