IP-10 and IFN-γ level are not correlated with age
Mtb. antigen-stimulated concentrations of IP-10 and IFN-γ
differed significantly among four different age groups (0-2 yrs; 2-5
yrs; 5-10 yrs, and >10 yrs) (p < 0.001 and p =
0.04, respectively) and between children aged < 5 years and
older (p < 0.001 and p = 0.005, respectively). However, the
correlation between biomarker level upon Mtb. antigen stimulation
and age was weak for IP-10 and negligible for IFN-γ (rs= 0.32; p = 0.000001 and rs = 0.16; p = 0.014,
respectively).