Lee, Deanna, Das Gupta, Jaydip, Gaughan, Christina et al. · PloS one · 2012 · DOI
Scientists investigated whether a virus called XMRV could cause chronic fatigue syndrome or prostate cancer. Even though an earlier study claimed to find this virus in some patients, many follow-up studies couldn't confirm it. This research tested blood and tissue samples from 39 prostate cancer patients using multiple methods and found no sign of XMRV infection, suggesting the virus doesn't naturally infect humans—it likely came from contamination in laboratory experiments.
For ME/CFS patients, this study is significant because it definitively refutes the XMRV hypothesis—a once-prominent theory in CFS research that created both hope and controversy. By demonstrating that XMRV is a laboratory artifact rather than a natural human infection, this work helps redirect research toward other credible biological mechanisms and prevents continued investment in a false lead.
This study does not prove that no retroviral agent contributes to CFS or prostate cancer—it only rules out XMRV specifically. The finding of contamination in archival samples does not invalidate other viral investigations in ME/CFS, nor does it address whether other retroviruses or pathogens might play a role. The study also does not examine CFS patients directly, so findings in prostate cancer tissue cannot be automatically generalized to CFS etiology.
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
The first block is for the primary paper and is the citation you should use in research work. The atlas-snapshot line only applies if you are specifically referring to this atlas’s reading of the paper on the date shown.
Primary citation
Lee, Deanna, Das Gupta, Jaydip, Gaughan, Christina, Steffen, Imke, Tang, Ning, Luk, Ka-Cheung, et al. (2012). In-depth investigation of archival and prospectively collected samples reveals no evidence for XMRV infection in prostate cancer.. PloS one. https://doi.org/10.1371/journal.pone.0044954
BibTeX
@article{mecfsatlas-lee-2012-depth-investigation,
author = {Lee, Deanna and Das Gupta, Jaydip and Gaughan, Christina and Steffen, Imke and Tang, Ning and Luk, Ka-Cheung and Qiu, Xiaoxing and Urisman, Anatoly and Fischer, Nicole and Molinaro, Ross and Broz, Miranda and Schochetman, Gerald and Klein, Eric A and Ganem, Don and Derisi, Joseph L and Simmons, Graham and Hackett, John and Silverman, Robert H and Chiu, Charles Y},
title = {In-depth investigation of archival and prospectively collected samples reveals no evidence for XMRV infection in prostate cancer.},
journal = {PloS one},
year = {2012},
doi = {10.1371/journal.pone.0044954},
note = {PubMed: 23028701},
url = {https://www.mecfsatlas.com/evidence/lee-2012-depth-investigation},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-30. https://www.mecfsatlas.com/evidence/lee-2012-depth-investigation
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