Certain antibodies in the human immune system bind to specific parts of proteins derived from ancient viral sequences in the human genome. One of these binding sites, GKTCPKEIPKGSKNT, has a unique chemical composition and does not resemble known self-proteins or infectious viruses.

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Evidence from Studies

Supporting (1)

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Community contributions welcome

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Autoantibodies to human endogenous retrovirus‐K are frequently detected in health and disease and react with multiple epitopes

Cross-Sectional Study

Human

2002 Apr

Scientists found that the immune system in people can recognize a specific part of an ancient virus hidden in our DNA, and this part is unique—not like anything else in our body or other viruses. This supports the idea that our immune system is reacting directly to this hidden viral piece.

Contradicting (0)

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No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Autoantibodies to human endogenous retrovirus‐K are frequently detected in health and disease and react with multiple epitopes

Score: 38

DOI: 10.1046/j.1365-2249.2002.01735.x

Similar Assertions

Two viral proteins, HERV-K10 and IDDMK1,222, have nearly identical sequences, and antibodies that bind to one also bind strongly to the other. This suggests the immune system is responding to common structural features, not distinct differences between them.

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79%

Antibodies against a specific protein from an ancient viral sequence in human DNA are found in about 29% of healthy people and in 32% to 47% of people with certain autoimmune rheumatic diseases.

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78%