The APTT test is one of the standard tests used to investigate the efficacy of the intrinsic pathways of coagulation.
The EGFR inhibitors CL387785, PD153035, and AG1478 show increased efficacy of pathway inhibition when compared to U0126, as might be expected when targeting the initial component of this receptor linked pathway.
The epidermal growth factor receptor (EGFR) is broadly expressed in BTC and in vitro studies have suggested the potential efficacy of inhibitors of this pathway (Harder et al, 2009).
Thus, it has been proposed that F-FDG PET could be used as a pharmacodynamic biomarker for assessing the efficacy of inhibition of the PI3K/Akt/mTOR pathway by targeted therapy [ 10].
Multiregimen drug testing, paired with next-generation sequencing before and after therapy and timed tumor pharmacodynamics enables determination of efficacy, signaling pathway alterations, and mechanisms of sensitivity-resistance in individual models.
Because of the possibility of concomitant secular trends and the effects of a changing medical environment, further rigorous research on the efficacy of individual pathways is needed.
The efficacy of LTβR pathway blockade (that is, the blocking of activation of LTβR by either of its ligands via the pharmacological inhibitor LTβR-immunoglobulin fusion protein [LTβR-Ig]) has been studied in many murine disease models (reviewed in [ 19]), and a human version was used in rheumatoid arthritis clinical trials [ 13].
It is therefore possible that the organization, and thus efficacy of signaling pathways that produce tolerance is severely limited in the aged brain.
Despite the efficacy of Hedgehog pathway inhibitors in the treatment of basal cell carcinoma (BCC 1, residual disease persists in some patients and may contribute to relapse when treatment is discontinued2.
Several previous studies have assessed the ability of FDG PET-CT to detect primary biliary tumours; however, few report its overall efficacy in the management pathway of patients with primary biliary malignancy.
