1 Abstract
2 The US National Toxicology Program (NTP) has carried out extensive rodent toxicology and
3 carcinogenesis studies of radiofrequency radiation (RFR) at frequencies and modulations used in
4 the US telecommunications industry. This report presents partial findings from these studies. The
5 occurrences of two tumor types in male Harlan Sprague Dawley rats exposed to RFR, malignant
6 gliomas in the brain and schwannomas of the heart, were considered of particular interest, and
7 are the subject of this report. The findings in this report were reviewed by expert peer reviewers
8 selected by the NTP and National Institutes of Health (NIH). These reviews and responses to
9 comments are included as appendices to this report, and revisions to the current document have
10 incorporated and addressed these comments. Supplemental information in the form of 4
11 additional manuscripts has or will soon be submitted for publication. These manuscripts describe
12 in detail the designs and performance of the RFR exposure system, the dosimetry of RFR
13 exposures in rats and mice, the results to a series of pilot studies establishing the ability of the
14 animals to thermoregulate during RFR exposures, and studies of DNA damage.
https://ecfsapi.fcc.gov/file/DOC-55dde23da8400000-B.pdf