| Field | Specification |
|---|---|
| Target | |
| Alternative names | 1F5, CDX-1127 |
| UniProt # | |
| CAS no. | |
| Reactivity | |
| Applications | |
| Assay type | |
| Sample type(s) | Plasma, Serum |
| Sensitivity | |
| Detection range | |
| Detection method | |
| Storage | |
| Shipping | |
| Catalog no. (Mfr.) | |
| Main SKU |
Assay Principle
This microplate immunoassay quantifies Varlilumab by colorimetric detection: samples and kit standards are processed in parallel, and absorbance values are converted to concentrations through the per-plate standard curve.
Background
Varlilumab (CDX-1127), a human IgG1κ monoclonal antibody, targets CD27 receptor through reacting with the ligand binding site of CD27. CD27 is a member of the tumor necrosis factor receptor superfamily and expressed on unstimulated T lymphocytes, serving as a potent costimulatory molecule. It has been found that CD27 induces a series of T-cell reactions including T-cell activation, proliferation, survival, and maturation of effector capacity and T-cell memory together with its ligand CD70, which is transiently expressed on antigen-presenting cells. Besides, the interaction of CD27 and CD70 also stimulate B-cell proliferation, generation of plasma cells, production of immunoglobulin and B-cell memory, and induction of the cytolytic activity of natural killer (NK) cells. Moreover, CD27 is considered to function on tumor expansion and activation as it also expressed by regulatory T cells (Tregs), a cell that is associated with the suppression of antitumor immunity. The drug, developed by Celldex Therapeutics, is designed for immunotherapy for patients with solid tumors and hematologic malignancies. Varlilumab is currently conducted with two trails. One is the phase 1B clinical trial for advanced breast or ovarian cancer in combination with ONT-10. Another is the phase 1/2 trial for advanced refractory solid tumors together with anti-PD-1 nivolumab.
Specifications
| Assay Type | Quantitative Colorimetric ELISA |
|---|---|
| Detection Method | Colorimetric |
| Plate Format | 96-well (96T) |
| Sample Types | Plasma, Serum |
| Sensitivity | 0.156 μg/mL |
| Detection Range | 0.31-5 μg/mL |
| Recovery | 80-120% |
| Stability & Storage | The stability of ELISA kit is determined by the loss rate of activity. The loss rate of this kit is less than 20% prior to the expiration date under appropriate storage condition. |
| Shipping | 2-8 °C |
| CAS Number | 1393344-72-3 |
| UniProt | P26842 |
| Alternative Names | 1F5, CDX-1127 |
Performance Data
Performance is defined by a quantitative range of 0.31-5 μg/mL, an analytical sensitivity of 0.156 μg/mL, typical spike recovery of 80-120%. For best precision, target the central portion of the curve and confirm matrix behavior with spike-recovery and dilution-linearity checks before routine runs.
Target Notes
The target is also referenced in the literature as 1F5, CDX-1127. Curated target information is available under UniProt accession P26842. The corresponding compound is registered under CAS 1393344-72-3.
Common Research Applications
- Pharmacokinetic profiling of the drug in preclinical and translational research models
- Bioanalytical method development, bridging, and comparability studies
- Stability and formulation studies requiring reproducible concentration readouts
Safety & Handling
For Research Use Only. Not for diagnostic or therapeutic use. Handle all reagents and samples according to your institution's laboratory safety guidelines, and store components as recommended to preserve assay performance.
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