14 June 2019 - - The US Food and Drug Administration has approved its PD-L1 IHC 22C3 pharmDx assay for expanded use, US-based Agilent Technologies Inc. (NYSE: A) said.
The assay is now approved as an aid in identifying patients with head and neck squamous cell carcinoma (HNSCC) for treatment with Keytruda (pembrolizumab), anti-PD-1 therapy manufactured by Merck (known as MSD outside the United States and Canada).
Keytruda, as a single agent, is indicated for the first-line treatment of patients with metastatic or with unresectable, recurrent HNSCC whose tumors express PD-L1 (CPS ≥ 1) as determined by an FDA-approved test.
PD-L1 IHC 22C3 pharmDx is the only companion diagnostic FDA-approved to aid in the identification of HNSCC patients for treatment with Keytruda.
HNSCC is the fifth cancer type for which PD-L1 IHC 22C3 pharmDx has gained FDA approval in the United States.
HNSCC is the seventh most common cancer worldwide3 and accounts for more than 90% of head and neck cancer cases.
In the United States, approximately 65,000 new head and neck cancer cases are diagnosed annually.
The five-year overall survival rate for this form of cancer is approximately 40–50%.
Keytruda is a humanised monoclonal antibody that increases the ability of the body's immune system to help detect and fight tumor cells. Keytruda blocks the interaction between PD-1 and its ligands, PD-L1 and PD-L2, thereby activating T lymphocytes, which may affect both tumor cells and healthy cells.
Keytruda and other targeted immunotherapies are revolutionising cancer treatment, and their therapeutic value is being demonstrated across a growing list of cancer types.
Agilent is a worldwide leader in partnering with pharmaceutical companies to develop immunohistochemical-based diagnostics for cancer therapy.
Agilent developed PD-L1 IHC 22C3 pharmDx in partnership with Merck and Co. PD-L1 IHC 22C3 pharmDx also helps physicians identify non-small cell lung cancer (NSCLC), cervical cancer, gastric or GEJ adenocarcinoma, and urothelial carcinoma patients for treatment with Keytruda.
PD-L1 expression in NSCLC tissues is interpreted using Tumor Proportion Score. PD-L1 expression in HNSCC, urothelial carcinoma, cervical cancer, and gastric or GEJ adenocarcinoma tissues is interpreted using Combined Positive Score.
Agilent Technologies Inc. (NYSE: A) is in life sciences, diagnostics, and applied chemical markets. Based on more than 50 years of insight and innovation, Agilent instruments, software, services, solutions, and people provide trusted answers to customers' most challenging questions.
The company generated revenues of USD 4.91bn in fiscal 2018 and employs 15,550 people worldwide.