Ever wondered how forensic science might one day estimate age without a name attached to it? Forensic epigenetics is a fast-growing field trying to answer exactly that — and it comes with its own vocabulary. This summer, our “ForMAT Explains” series broke down five terms you’ll come across when reading about our project. Here’s the plain-language version, with a bit more depth than a social post allows.
What is DNA methylation?
DNA methylation is a natural chemical process in which small molecular tags attach to DNA. These tags don’t change the underlying genetic code. However, they can change over time and in response to biological processes, increasing or decreasing DNA methylation levels. Because these patterns shift in predictable ways, researchers study them as a possible source of forensic information. In particular, this information is separate from, and complementary to, traditional DNA profiling.
What is an epigenetic clock?
An epigenetic clock is a scientific prediction model that uses DNA methylation patterns to estimate a person’s individual age. It’s important to be precise here: an epigenetic clock produces a statistical estimate with a margin of error, not an exact figure, and this remains an active area of forensic research rather than a finalised, validated technique. The ForMAT logo’s clock-and-DNA icon is a direct reference to this concept, which sits at the core of the project’s research.
What is forensic age estimation?
Forensic age estimation is used to estimate a likely age range for the donor of a biological sample. ForMAT is developing a DNA methylation-based approach as one contribution to this field. This work is intended to sit alongside, as a complementary molecular tool to existing forensic methods, and any application would be subject to validation and the relevant legal framework before use.
What is disaster victim identification (DVI)?
Disaster victim identification is the established forensic process used to identify human remains after mass-casualty events, such as natural disasters or major accidents. ForMAT is developing a dedicated kit intended to support this process, working alongside existing identification protocols used by forensic practitioners.
What is body-fluid and tissue identification?
This refers to forensic methods used to determine what type of biological material a sample contains — for example, whether a trace is blood, saliva, or semen. ForMAT is developing a DNA methylation-based kit intended to support this kind of analysis, which can provide useful context alongside standard DNA profiling in forensic casework.
Why these terms matter
Together, these five concepts sketch out the areas ForMAT’s research aims to contribute to: estimating individual age, supporting disaster victim identification, and characterising the biological source of forensic samples — always as one input among established forensic procedures.
Frequently asked questions
Is DNA methylation the same as a DNA test?
No. Standard forensic DNA profiling looks at genetic sequence to match identity. DNA methylation looks at chemical tags on top of the DNA, which can reflect biological processes like ageing — a different, complementary type of information, not a replacement.
Can an epigenetic clock tell someone’s exact age?
No. It produces a statistical estimate with a margin of error, and remains an active area of forensic research rather than a finalised, validated technique. The ForMAT project will offer an opportunity for standardization and operational validation.
Stay with us this summer
This explainer accompanies our LinkedIn carousel, part of our summer “ForMAT Explains” series for readers outside forensic science. Follow ForMAT on LinkedIn to catch future instalments!
