There are 2 studies that match your criteria.
Criteria: Freq Range=0 - 300 Hz (Static, ELF),Study Type=In Vitro,Study Subtype=DNA Breaks, Repair, & Mutation,Status=Ongoing

Details - Project ID 1193
Lab	National Research Institute for Radiobiology and R
Study Design	ELF exposure to cells in culture and analysis of DNA breaks via comet assay
Summary	Evaluation of DNA Damage by Alkaline Comet Assay after In Vitro Exposure to ELF Magnetic Fields
Citation
Details - Project ID 1982
Lab	University of Basel, Switzerland
Study Design	Electromagnetic field exposure [50 Hz and radiofrequency (GSM,,UMTS, WiFi and RFID)] to cell lines and analysis of DNA damage.
Summary	Increased in DNA breaks as a result of interference with the replication process and transition through S phase of the cell cycle
Citation	Focke, F et al. Mutat Res., (2010) 683:74-83 Schuermann, D et al. Genes (Basel). , (2020) 11:347- (Literature Review)