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DNA & Genetic Damage

Analysis of proto-oncogene and heat-shock protein gene expression in human derived cell-lines exposed in vitro to an intermittent 1.9 GHz pulse-modulated radiofrequency field.

No Effects Found

Chauhan V, Mariampillai A, Gajda GB, Thansandote A, McNamee JP. · 2006

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RF radiation at cell phone levels failed to trigger stress genes or cancer-related genes in immune cells, unlike heat treatment.

Plain English Summary

Summary written for general audiences

Researchers exposed human immune cells to 1.9 GHz radiofrequency radiation (similar to cell phone signals) at power levels of 1 and 10 watts per kilogram for 6 hours to see if it would trigger stress responses or activate genes linked to cancer development. They found no changes in stress proteins or cancer-related genes at either power level, while heat treatment (as a positive control) did trigger the expected cellular stress responses.

Why This Matters

This study provides important context for understanding cellular responses to RF radiation, particularly because it tested specific genes involved in cancer development and cellular stress responses. The exposure levels used (1-10 W/kg SAR) are within the range of typical cell phone use, where regulatory limits allow up to 2 W/kg. What makes this research particularly valuable is the robust experimental design with proper controls, including heat shock treatment that successfully triggered the stress responses the researchers were looking for. The fact that RF exposure produced no detectable changes in these sensitive cellular markers suggests that brief exposures at these power levels may not activate the same stress pathways that heat does. However, this single study represents just one piece of a much larger puzzle, and the intermittent exposure pattern (5 minutes on, 10 minutes off) may not reflect typical continuous phone use patterns.

Exposure Details

SAR
1, 10 W/kg
Source/Device
1.9 GHz
Exposure Duration
5 min on, 10 min off

Exposure Context

This study used 1, 10 W/kg for SAR (device absorption):

Building Biology guidelines are practitioner-based limits from real-world assessments. BioInitiative Report recommendations are based on peer-reviewed science. Check Your Exposure to compare your own measurements.

Where This Falls on the Concern Scale

Study Exposure Level in ContextStudy Exposure Level in ContextThis study: 1, 10 W/kgExtreme Concern - 0.1 W/kgFCC Limit - 1.6 W/kgEffects observed in the Extreme Concern range (Building Biology)FCC limit is 2 times higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 1.90 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 1.90 GHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Study Details

The current study was undertaken to evaluate this possibility in two human-derived immune cell-lines.

HL-60 and Mono-Mac-6 (MM6) cells were individually exposed to intermittent (5 min on, 10 min off) 1....

No significant effects were observed in mRNA expression of HSP27, HSP70, c-jun, c-myc or c-fos betwe...

This study found no evidence that exposure of cells to non-thermalizing levels of 1.9 GHz pulse-modulated RF fields can cause any detectable change in stress-related gene expression.

Cite This Study
Chauhan V, Mariampillai A, Gajda GB, Thansandote A, McNamee JP. (2006). Analysis of proto-oncogene and heat-shock protein gene expression in human derived cell-lines exposed in vitro to an intermittent 1.9 GHz pulse-modulated radiofrequency field. Int J Radiat Biol. 82(5):347-354, 2006.
Show BibTeX
@article{v_2006_analysis_of_protooncogene_and_2970,
  author = {Chauhan V and Mariampillai A and Gajda GB and Thansandote A and McNamee JP.},
  title = {Analysis of proto-oncogene and heat-shock protein gene expression in human derived cell-lines exposed in vitro to an intermittent 1.9 GHz pulse-modulated radiofrequency field.},
  year = {2006},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/16782652/},
}
PubMed: 16782652

Cited By (30 papers)

Quick Questions About This Study

A 2006 study found no evidence that 1.9 GHz cell phone radiation activates cancer-related genes in human cells. Researchers exposed immune cells to radiofrequency signals for 6 hours at power levels up to 10 watts per kilogram, finding no changes in proto-oncogenes like c-myc or c-fos that are linked to cancer development.
Research shows 1.9 GHz radiofrequency radiation does not trigger detectable stress responses in human cells. Scientists exposed cells to pulse-modulated RF fields for 6 hours and found no increase in heat shock proteins (HSP27, HSP70) that normally indicate cellular stress, while heat treatment did produce the expected stress response.
This 2006 study found no evidence that cell phone frequency radiation (1.9 GHz) damages DNA or activates stress-related genes in human immune cells. Exposure to radiofrequency fields at non-heating levels for 6 hours produced no detectable changes in gene expression patterns associated with DNA damage or cellular stress.
Research indicates minimal gene expression risks from non-thermal RF radiation exposure. A controlled study exposing human cells to 1.9 GHz pulse-modulated radiofrequency fields found no significant changes in stress proteins or cancer-related genes, suggesting RF radiation at typical cell phone power levels doesn't alter normal gene expression patterns.
Radiofrequency exposure at cell phone frequencies does not appear to impact cellular stress proteins. Scientists found no elevation in HSP27 or HSP70 stress proteins when human cells were exposed to 1.9 GHz RF fields for 6 hours, indicating the radiation didn't trigger the cellular stress response mechanisms that protect cells from damage.