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Single case report with no control group, describing tolerance of anti-PD-1 therapy in an unusual patient population; raises a question about feasibility rather than establishing efficacy or safety.
This systematic review of preclinical animal models raises mechanistic questions about PDT's potential to trigger systemic immunity but does not provide clinical evidence sufficient to guide practice or confirm efficacy in humans.
Current Trends in Pharmacy and Pharmaceutical Chemistry
A scoping review of case reports and preliminary studies suggesting potential benefit of imiquimod for oral premalignant lesions, but with explicitly limited evidence and no controlled trial data or transformation outcomes reported.
Single-center cohort of six patients from a prematurely terminated phase 2 trial with descriptive analysis only; feasibility and immune remodeling demonstrated but efficacy and safety conclusions explicitly limited by sample size and trial discontinuation.
Systematic review of observational and descriptive studies without meta-analysis, formal certainty assessment, or prospective registration; aggregates heterogeneous epidemiological data to characterize regional patterns rather than test efficacy or causation.
A single case report documenting an unusual clinical phenomenon (phenotypic conversion in breast cancer metastasis) with descriptive pathology and treatment response, insufficient to establish efficacy or guide practice.
Retrospective, single-centre real-world registry without a control arm, reporting associations and treatment patterns rather than efficacy or superiority; lacks randomisation and cannot establish causation, suitable for hypothesis generation and service characterisation.
An observational infodemiology study using machine learning on social media data with cross-sectional associations to clinical outcomes; generates hypotheses about treatment hesitancy but lacks causal inference, experimental design, or direct patient enrollment.