Overview
- A court-appointed geneticist found partial Y-chromosome DNA on two nail samples with statistical support ranging from moderate to strong for compatibility with Andrea Sempio’s paternal lineage, which does not uniquely identify an individual.
- The report excludes all other tested men, including Alberto Stasi, and detects a distinct second male profile on another sample that matches none of the eight comparison subjects.
- The perizia stresses key limits: degraded mixed traces, no determination of whether DNA was under or on the nails, no assignment to specific fingers, and no scientifically validated way to time or explain transfer.
- Albani criticizes 2014 laboratory methods for undermining later evaluations, noting lack of DNA quantification and inconsistent eluate volumes, with most original material now exhausted.
- An incidente probatorio on December 18 will question the experts and admit party reports, as prosecutors weigh next steps and investigators assess newly acquired photographs from the day of the killing alongside defense claims of secondary transfer.