Impact of cell type composition from blood, saliva and a buccal swab on age prediction using DNA methylation markers

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00016602

Enrollment

Registered

2019-01-31

Start date

2019-02-01

Completion date

Unknown

Last updated

2026-02-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Influences on DNA methylation analysis

Interventions

Group 1: Participants provide one sample each of blood, saliva, buccal swab (in some cases multiple times), and skin abrasion (by rubbing on the arm)

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: no further criteria

Exclusion criteria

Exclusion criteria: known diseases of the immune system

Design outcomes

Primary

Measure	Time frame
Investigation of DNA methylation sites in different cell types	—

Secondary

Measure	Time frame
comparison of methods for the sampling (e.g. pressure during buccal swab taking) and DNA extraction method	—

Countries

Germany

Contacts

Public ContactJana Naue

Universitätsklinikum FreiburgInstitut für RechtsmedizinForensische Molekularbiologie

jana.naue@uniklinik-freiburg.de07612036851

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 7, 2026