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Papers of the Week

2020 Jul 10


Clinical application of volumetric absorptive microsampling to the gefapixant development program.


Roadcap B, Hussain A, Dreyer D, Carter K, Dube N, Xu Y, Anderson M, Berthier E, Vazvaei F, Bateman K, Woolf E
Bioanalysis. 2020 Jul 10.
PMID: 32648772.


In this paper we show the application of the Tasso OnDemand™, a novel automated sample collection device, in conjunction with volumetric absorptive microsampling (VAMS) for the development of gefapixant, a P2X3 receptor antagonist currently under clinical development for the treatment of refractory and unexplained chronic cough and endometriosis-related pain. A LC-MS/MS bioanalytical method was developed and validated using VAMS to support this development program. This method was utilized in a drug-drug interaction study to establish a mathematical bridging relationship with data obtained from a validated plasma assay used to support the program. The VAMS bioanalytical method and the predictability of the mathematical relationship is reported and discussed here.