There are 3 studies that match your criteria.
Criteria: Freq Range=300 kHz - 300 GHz (RF/mmW/THz),Study Type=In Vitro,Study Subtype=DNA Breaks, Repair, & Mutation,Status=Ongoing

Details - Project ID 1101
Lab	University of Basel, Switzerland
Study Design	1800 MHz (GSM) exposure to cell lines and analysis of DNA damage.
Summary	(ongoing)
Citation	Xu, S et al. PLoS One., (2013) 8:10 pages-e54906
Details - Project ID 1580
Lab	INCOS Boto, Germany
Study Design	1800 MHz (GSM) exposure to primary human lymphocytes and analysis of DNA breaks, chromosome aberrations, micronuclei, and sister chromatid exchange.
Summary	Possible Genotoxic Effects of GSM Signals on Isolated Human Blood
Citation	Waldmann, P et al. Radiat Res. , (2013) 179:243-253
Details - Project ID 1823
Lab	Technische Universität Darmstadt, Germany
Study Design	1800 MHz exposure to human fibroblasts and evaluation of DNA breaks and micronuclei (replication of REFLEX reports)
Summary	Influence of RF Electromagnetic Fields of Mobile Communication on Human Fibroblasts (Genotoxicity)
Citation