SMC^® Human PD-L1 High Sensitivity Immunoassay Kit

Programmed cell death protein ligand 1 (PD-L1), also known as cluster of differentiation 274 (CD274) and B7-H1, is a type 1 membrane protein of 290 amino acids. It is found in a variety of cell types and binds programmed cell death protein (PD-1). It has been indicated as playing a role in autoimmune disease, allograft responses, pregnancy, and other disease states. When PD-L1 binds to PD-1, an inhibitory signal is transmitted that ultimately reduces the proliferation of antigen-specific T cells and reduces the rate of apoptosis in regulatory T-cells. By doing so, PD-L1 contributes to the immune evasion of cancer tissues by suppressing the adaptive immune system. Blocking this activity is thought to restore anti-tumor activity. High PD-L1 expression is correlated with poor prognosis with some cancer types. High levels of the soluble form are also associated with poor prognosis and advanced tumor progression. Multiple PD-L1 inhibiting monoclonal antibodies have been approved as cancer therapeutics.

Immuno-Oncology

96 well assay

• Sensitivity: LLOQ 780 fg/mL* (SMCxPRO^® Instrument)
• Standard Curve Range: 390-400,000 fg/mL
• Intra-assay CV: <15%
• Inter-assay CV: <20%
• Linearity: Serum: 120% Plasma: 110%
• Recovery: Serum: 117% Plasma: 109%

*Indicative LLOQ created from average of 14 independent in house runs, where >80% met same value defined with CV & Recovery +/- 20%. Refer to CoA for lot specific performance.

Although PD-L1 was detectable in rat, mouse, monkey, and canine samples, the assay has not been verified for these species.

FEMTOQUEST is a trademark of Merck KGaA, Darmstadt, Germany

SMC is a registered trademark of Singulex

SMCxPRO is a registered trademark of Merck KGaA, Darmstadt, Germany

Our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.