This report synthesises findings from 10 peer-reviewed papers addressing the following research question: How does the vulnerability detection F1-score of Deepseek R1 vary when fine-tuned on code subsets stratified by cyclomatic complexity using the Big-Vul dataset. 9 claims were extracted from source literature; 9 were independently verified against retrieved documents. An automated multi-reviewer quality assessment produced a score of 8.5/10. This report is a machine-generated literature synthesis and does not constitute original research.Research goal: How does the vulnerability detection F1-score of Deepseek R1 vary when fine-tuned on code subsets stratified by cyclomatic complexity using the Big-Vul dataset?Autonomous literature synthesis. Automated review score: 8.5/10. Full text and citation available at Assignee Research.