Garlasco case: acetate analysis without comparable DNA. Implications for the investigation

From the first analyses, in the maximum evidentiary accident in progress in the Garlasco case, on the samples of the thirty acetate sheets, containing about fifty prints, not enough material would have been found to extract comparable DNA profiles. Not even in print 10, the one now known to be on the front door, which was considered by investigators to be the alleged 'dirty hand' of the killer. This was learnt on 1 July 2025 from the first checks made by the parties' advisors on the data made available today.

From what has been learned, regarding the data made available by the experts to the counsels of the parties, it does not appear that DNA, then useful for comparisons, can be extracted from the acetates, i.e. from the sheets that preserved the traces of the footprints found in the Poggi home.

Sheets that were recovered after 18 years had passed since the murder, with the issue of preservation attached. As it turned out, only a couple, maximum three, acetate sheets had material that seemed useful for genetic profiling extractions, but in any case too small a quantity for comparisons. Basically, according to reports, kits for extracting genetic material from samples have a range of up to a thousand, as a value, and in this case the values were as low as 0.1.

First results that, however, from what is known, will have to be further verified with 'characterisations', that is, with further, more specific attempts to find DNA. At present, however, the likelihood of success seems very low.

These first results are in addition to those on the DNA traces found in the rubbish, which belong either to Chiara Poggi or Alberto Stasi. None to Andrea Sempio, the new murder suspect.