Glucose clamp studies form an integral part of the early development of insulin therapies. Data generated in these studies
are used to establish pharmacokinetic (PK) and pharmacodynamic (PD) profiles of the agents, but methodological differences
confound comparison of results from different glucose clamp studies. The first part of this series on glucose clamp studies
discussed practical tips for the interpretation of glucose clamp studies. The second part of the series compares the PK/PD profiles
of longer-acting basal analogue insulins, insulin degludec (IDeg) and insulin glargine U300 (Gla-300). The patient populations
for glucose clamp studies with these analogue insulins differ, and therefore direct comparison of the data is not always possible.
The maximum duration of action of IDeg is reported as 42 h and that of Gla-300 as 36 h, translating to 24 h coverage. The plasma
insulin concentration of IDeg is 56 times that of Gla-300. Results from phase III clinical trials for these analogue insulins confirm
the predictability and low within-subject variability observed in glucose clamp studies. Insight into the PK/PD profiles of longeracting
basal analogue insulins allows the treating physician to utilise these characteristics to optimise the treatment of their
patients with diabetes.