{'fraction_non_alphanumeric': 0.03529411764705882, 'fraction_numerical': 0.02483660130718954, 'mean_word_length': 5.17741935483871, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
PD-L1 inhibition with MPDL3280A for solid tumors.

Cancer immunotherapy has become a popular anticancer approach, with the goal of stimulating immune responses against tumor cells. Recent evidence has demonstrated that the use of monoclonal antibodies targeting the programmed death ligand-1 (PD-L1)/programmed death-1 (PD-1) checkpoint pathway can result in well-tolerated clinical responses in a wide variety of tumor types. This review summarizes the safety, clinical activity and biomarker data for the anti-PD-L1 antibody, MPDL3280A, from a phase Ia multicenter, dose-escalation and -expansion trial. The data to date suggest that MPDL3280A is most effective in patients with pre-existing immunity suppressed by PD-L1 and reinvigorated upon antibody treatment.