close to significancep =0.073
Considering ORR, although close to significance, a relative change in the frequency of CD21 - B-cells was not associated with ORR in the univariable analysis (OR=0.09, 95%CI=0.01-1.25, p =0.073), but reached statistical significance in the multivariable logistic regression model (OR=0.21, 95%CI=0.00-0.71.9, p =0.032). 4 Discussion There is evidence that B-cells and TLS in the tumor microenvironment might be linked to ICI treatment response ( 14 ).