FSS-i 3 DNA expert system suite

DNA Profiling Sample e.g. hair, skin

DNA Profiling Sample e.g. hair, skin Process sample to obtain raw data

DNA Profiling Sample e.g. hair, skin Process sample to obtain raw data Produce a profile of the DNA

DNA Profiling Sample e.g. hair, skin Process sample to obtain raw data Produce a profile of the DNA Store profile in NDIS (National DNA Index System) or match to existing profile

Expert System profiling motivation Sample & data processing already heavily automated

Expert System profiling motivation Sample & data processing already heavily automated Sample data analysis; DNA profiling is the bottle neck.

Expert System profiling motivation Sample & data processing already heavily automated Sample data analysis; DNA profiling is the bottle neck. Two independent data reviews required to upload a profile to NDIS

Expert System profiling motivation Sample & data processing already heavily automated Sample data analysis; DNA profiling is the bottle neck. Two independent data reviews required to upload a profile to NDIS Save enormous amounts of review time

FSS-i 3 Expert System FSS: Forensic Science Service of the UK

FSS-i 3 Expert System FSS: Forensic Science Service of the UK Developed a software suit called FSS-i 3 –6 years of R&D and validation

FSS-i 3 Expert System FSS: Forensic Science Service of the UK Developed a software suit called FSS-i 3 –6 years of R&D and validation Designed by forensic scientists for forensic scientists

FSS-i 3 Expert System FSS: Forensic Science Service of the UK Developed a software suit called FSS-i 3 –6 years of R&D and validation Designed by forensic scientists for forensic scientists Made available to forensic community –USA, Canada, Europe, Australia, New Zealand

FSS-i 3 Expert System FSS: Forensic Science Service of the UK Developed a software suit called FSS-i 3 –6 years of R&D and validation Designed by forensic scientists for forensic scientists Made available to forensic community –USA, Canada, Europe, Australia, New Zealand Full Audit system

i-STRess The core DNA interpretation tool

i-STRess The core DNA interpretation tool Produces single source DNA profiles using configurable rules & filters

i-STRess The core DNA interpretation tool Produces single source DNA profiles using configurable rules & filters Detect multi-person DNA mixtures within a profile & export to i-STReam…

i-STReam Unique functionality to resolve two person DNA mixtures

i-STReam Unique functionality to resolve two person DNA mixtures Allows previously unusable DNA profiles to be uploaded to DNA databases

i-ntegrity DNA samples/data can become contaminated: accidental DNA mixture

i-ntegrity DNA samples/data can become contaminated: accidental DNA mixture System flags possible profile contaminations for further review

i-ntegrity DNA samples/data can become contaminated: accidental DNA mixture System flags possible profile contaminations for further review Saves time: no more manual reviews of profiles

FSS-i 3 Validation FSS-i 3 developed from internal FSS expert systems –6 years of testing

FSS-i 3 Validation FSS-i 3 developed from internal FSS expert systems –6 years of testing 1 million+ profiles uploaded to UK National DNA DB

FSS-i 3 Validation FSS-i 3 developed from internal FSS expert systems –6 years of testing 1 million+ profiles uploaded to UK National DNA DB FSS-i 3 validation project: – previously analyzed samples –Minor discrepancies in 0.03% of samples & each of these samples were flagged by the system for further review

Technology used in FSS-i 3 Strategies for implementing rules: unknown

Technology used in FSS-i 3 Strategies for implementing rules: unknown User optimization: 20+ rules settings

Technology used in FSS-i 3 Strategies for implementing rules: unknown User optimization: 20+ rules settings Designed to run on stand-alone Pentium 3 PCs

Design & Development of FSS-i 3 Development time: six years

Design & Development of FSS-i 3 Development time: six years The FSS developers who designed the FSS-i3 suite are, first and foremost, DNA scientists who understand the problems forensic scientists face (1)

Design & Development of FSS-i 3 Development time: six years The FSS developers who designed the FSS-i3 suite are, first and foremost, DNA scientists who understand the problems forensic scientists face (1) i-STReam is based on scientific theory developed by Dr Peter Gill and Dr Tim Clayton (1)

Conclusions: FSS-i 3 Consistent profiling of samples

Conclusions: FSS-i 3 Consistent profiling of samples Ability to interpret mixed DNA profiles

Conclusions: FSS-i 3 Consistent profiling of samples Ability to interpret mixed DNA profiles Check for contamination

Conclusions: FSS-i 3 Consistent profiling of samples Ability to interpret mixed DNA profiles Check for contamination Significant reduction in time spent on the above, due to automation

References (1) (2) (3) rtSys.pdf rtSys.pdf (4) (5) (6)