Siltuximab

Siltuximab
Monoclonal antibody
TypeWhole antibody
SourceChimeric (mouse/human)
TargetIL-6
Clinical data
Trade namesSylvant
Other namesCNTO 328
License data
ATC code
Legal status
Legal status
  • AU: S4 (Prescription only)
  • US: ℞-only
  • EU: Rx-only
Identifiers
CAS Number
DrugBank
ChemSpider
  • none
UNII
KEGG
ChEMBL
Chemical and physical data
FormulaC6450H9932N1688O2016S50
Molar mass144983.21 g·mol−1
 NY (what is this?)  (verify)

Siltuximab (INN), sold under the brand name Sylvant, is used for the treatment of people with multicentric Castleman's disease. It is a chimeric (made from human and mouse proteins) monoclonal antibody that binds to interleukin-6. It is an interleukin-6 (IL-6) antagonist.

The common adverse reactions include pruritus, increased weight, rash, hyperuricemia, and upper respiratory tract infection.

In April 2014, siltuximab was approved for medical use in the United States for the treatment of people with multicentric Castleman's disease who do not have human immunodeficiency virus (HIV) or human herpesvirus-8 (HHV-8).