There are 3 studies that match your criteria.
Criteria: Freq Range=300 kHz - 300 GHz (RF/mmW/THz),Study Type=In Vivo,Study Subtype=DNA Breaks, Repair, & Mutation,Status=Completed Without Publication

Details - Project ID 41
Lab	Integrated Laboratory Systems, USA
Study Design	837 MHz (TDMA, CDMA, CW) exposure to rats and analysis of DNA breaks in brain cells
Summary	No effects
Citation	Chou, CK et al. Bioelectromagnetics, (1999) 20:75-92
Details - Project ID 552
Lab	University of Bordeaux, France
Study Design	900 MHz (GSM) exposure to rats and analysis of DNA breaks in brain cells
Summary	No consistent increase in DNA moment or tail length from Comet assays
Citation	Lagroye, I et al. Int J Radiat Biol., (2004) 80:11-21
Details - Project ID 1720
Lab	Tohoku University, Sendai, Japan
Study Design	2450 MHz exposure to b-gal transgenic ("Muta") mice and analysis of mutation frequency
Summary	Absence of Mutagenic Effects of 2.45 GHz Radiofrequency Exposure in Spleen, Liver, Brain, and Testis of LacZ Transgenic Mouse Exposed in Utero
Citation	Ono, T et al. Tohoku J Exp Med, (2004) 202:93-103