The disclosure provides pharmaceutical compositions comprising an anti-PD-1 antibody or an anti-PD-L1 antibody. In some aspects, the pharmaceutical compositions are formulated for subcutaneous delivery. In some aspects, the pharmaceutical compositions further comprise an endoglycosidase hydrolase enzyme. Other aspects of the present disclosure are directed to methods of subcutaneously delivering a pharmaceutical composition comprising an anti-PD-1 antibody or an anti-PD-L1 antibody.