ADA isotyping Antibodies, Anti-Idiotypic 1 Article 1 Biological Therapy 1 Enzyme-Linked Immunosorbent Assay 1 HEK293 cell line 1 Humans 1 IgM positive control 1 anti-IgM 1 antibody detection 1 antiidiotypic antibody 1 biological therapy 1 biotherapeutics 1 blood 1 blood sampling 1 conjugation 1 controlled study 1 drug antibody 1 enzyme linked immunosorbent assay 1 human 1 human cell 1 immune response 1 immune response characterization 1 immunocytokine 1 immunogenicity 1 immunoglobulin E 1 immunoglobulin G1 1 immunoglobulin G3 1 immunoglobulin G4 1 immunoglobulin M 1