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A companion diagnostic (CDx) [1] is a diagnostic test used as a companion to a therapeutic drug to determine its applicability to a specific person. [2]Companion diagnostics are co-developed with drugs to aid in selecting or excluding patient groups for treatment with that particular drug based on their biological characteristics that determine responders and non-responders to the therapy.
The Food and Drug Administration (FDA) IVD Companion Diagnostic Device guidance issued in draft 14 July 2011 states that a companion diagnostic test can be used to “Identify patients likely to be at increased risk for serious adverse reactions as a result of treatment with a particular therapeutic product”. [9]
Afamitresgene autoleucel is a melanoma-associated antigen A4 (MAGE-A4)-directed genetically modified autologous T cell immunotherapy indicated for the treatment of adults with unresectable or metastatic synovial sarcoma who have received prior chemotherapy, are HLA-A*02:01P, -A*02:02P, -A*02:03P, or -A*02:06P positive and whose tumor expresses the MAGE-A4 antigen as determined by FDA-approved ...
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The FDA also expanded the intended use for the PD-L1 IHC 22C3 pharmDx kit to include use as a companion diagnostic device for selecting patients with head and neck squamous cell carcinoma for treatment with pembrolizumab as a single agent. [78]
The MDA established a risk-based framework for the classification of medical devices and a regulatory pathway for medical devices to get to the market, created a regulatory pathway for medical device clinical trials, and established several post-market requirements including manufacturer registration and device listing with the FDA, good ...