STRs for identity ENFSI Reference database, v3/R2

STR Sequence Nomenclature Guidance

The ‘Forensic Sequence STRucture Guide’ (FSSG) is an updated set of forensic STR sequences that was originally published as Supplementary File S1 in the article

Parson W, Ballard D, Budowle B, Butler JM, Gettings KB, Gill P, Gusmão L, Hares DR, Irwin JA, King JL, de Knijff P, Morling N, Prinz M, Schneider PM, Van Neste C, Willuweit S, Phillips C: Massively parallel sequencing of forensic STRs: Considerations of the DNA commission of the International Society for Forensic Genetics (ISFG) on minimal nomenclature requirements. Forensic Science International Genetics 2016, 22: 54-63 (doi: 10.1016/j.fsigen.2016.01.009; available at;Parson2016).

The original file has been expanded, enhanced and revised as described in the publications

Phillips C, Gettings KB, King JL, Ballard D, Bodner M, Borsuk L, Parson W: “The devil’s in the detail”: Release of an expanded, enhanced and dynamically revised forensic STR Sequence Guide. Forensic Science International Genetics 2018, 34: 162-169 (doi: 10.1016/j.fsigen.2018.02.017)


Gettings KB, Bodner M, Borsuk LA, King JL, Ballard D, Parson W, Benschop CCG, Børsting C, Budowle B, Butler JM, van der Gaag KJ, Gill P, Gusmão L, Hares DR, Hoogenboom J, Irwin J, Prieto L, Schneider PM, Vennemann M, Phillips C: Recommendations of the DNA Commission of the International Society for Forensic Genetics (ISFG) on short tandem repeat sequence nomenclature. Forensic Science International Genetics 2024, 68: 102946 (doi: 10.1016/j.fsigen.2023.102946; available at;Gettings2023).

The most recent version of this permanently curated and updated Forensic Sequence STRucture Guide (FSSG) containing updated information is available for download here. The updates since the last version are reported in a change log tab contained in the file. To receive information on new releases of the FSSG and to stay updated about STRidER, register here for the STRidER newsletter.