“mRNA vaccines can permanently alter or integrate into human DNA.”

FACT: COVID-19 vaccines do not change or interact with your DNA in any way. Both messenger RNA (mRNA) and viral vector COVID-19 vaccines work by delivering instructions (genetic material) to our cells to start building protection against the virus that causes COVID-19. The genetic material delivered by mRNA vaccines never enters the nucleus of your cells, which is where your DNA is kept.

These include (i) safety, as mRNA does not integrate with the host DNA and is non-infectious; (ii) efficacy, as modifications in the mRNA improve stability and translation efficiency. The mRNA remains in the cytoplasm and is degraded by normal cellular processes after protein translation.

“To change your DNA, the genetic material from a vaccine would need to enter the nucleus of your cells, where DNA lives. But the mRNA from COVID-19 vaccines does not enter the nucleus.” The article also explains: “For genetic material to be integrated into our DNA, it has to be in the form of DNA, and needs to be accompanied by special enzymes known as integrases or reverse transcriptases. mRNA vaccines don’t carry these enzymes, so there is no risk of the genetic material they contain altering our DNA.”

Professor Thomas Preiss: "There is, at present, no evidence that it is plausible for mRNA from the COVID-19 vaccines to be integrated into human DNA, at least not in the sense that it would represent a significant medical problem with mRNA vaccines." He notes that the way mRNA vaccines work "makes it exceedingly unlikely that this will occur in patients" and that vaccine mRNA is only a fragment of the viral RNA and embedded in a distinct mRNA design, so "it cannot be assumed that an mRNA vaccine and the full virus would have access to a similar route, if it indeed existed, to enter into the human genome." Professor Nigel McMillan adds: "We know that certain viruses such as HIV are able to insert their RNA into the human genome but only after they have converted it into DNA... via an enzyme called reverse transcriptase – an enzyme humans don't have. So, the upshot is we don't have a way for mRNA vaccines to be inserted into our genomes."

“The mRNA from the vaccines does not enter the cell nucleus or interact with the DNA at all, so it does not constitute gene therapy.” It continues: “mRNA is very fragile and is broken down by the body within a few days. It never integrates into the genome and cannot be passed on to the next generation.”

For example, some people fear that the mRNA COVID-19 vaccine changes our DNA. That is impossible, scientists assert. mRNA only operates in the part of a cell outside the nucleus. It never enters the nucleus, where DNA is stored, and it cannot integrate into or alter the DNA sequence.

In a comparison table of vaccine platforms, the review states for mRNA vaccines: “**No integration risk: mRNA is transient and degraded by normal cellular processes**.” In contrast, it describes DNA vaccines as having a “Very low risk of genomic integration, especially with improved non-integrating plasmid vectors,” highlighting the conceptual difference between DNA and mRNA platforms.

mRNA vaccines do not alter DNA. The mRNA in them cannot combine with or interact with DNA. mRNA does not stay in the body for very long. After it has done its job of teaching cells to make the protein, the cells break it down and it leaves the body as waste.

mRNA from vaccines does not enter the nucleus and does not alter DNA. mRNA vaccines work by introducing a piece of mRNA that corresponds to a viral protein, usually a small piece of a protein found on the virus's outer membrane.

No. There is no risk of an mRNA vaccine changing your DNA because mRNA does not have the ability to alter DNA. Your cells constantly make their own mRNA. The synthetic mRNA in the vaccine acts like any other mRNA that your cells make.

The study tested whether the vaccine's mRNA could be converted to DNA, and found that this was the case in certain lab-altered liver cell lines under experimental conditions. It did not assess whether the vaccine alters the human genome, or what the effects of that would be, according to experts and the study authors.

With the Pfizer mRNA-LNP vaccine, it has been shown experimentally that the vaccine mRNA can be reverse-transcribed into DNA in an immortalized human hepatocyte cell line. Exposure to the mRNA-LNP vaccine also correlated with an increase in overall LINE-1 retrotransposon expression levels and localization to the nucleus.

We investigated the possibility that SARS-CoV-2 RNAs can be reverse-transcribed and integrated into the DNA of human cells in culture and that transcription of the integrated sequences might account for some of the positive PCR tests seen in patients. In support of this hypothesis, we found that DNA copies of SARS-CoV-2 sequences can be integrated into the genome of infected human cells.

Vaccine specialist Dr. Paul Offit explains that mRNA from COVID-19 vaccines cannot alter DNA because it “does not enter the nucleus, where DNA resides,” and that even if it did, “it would need to be converted to DNA with an enzyme called reverse transcriptase, which it doesn’t have, and then would need to integrate into the DNA with an enzyme called integrase, which it also doesn’t have.” He concludes that for these reasons “it’s not possible for mRNA vaccines to change your DNA.”

Despite the assumption that there is no possibility of genomic integration of therapeutic synthetic mRNA, only one recent study has examined interactions between vaccine mRNA and the genome of transfected cells, and reported that an endogenous retrotransposon, LINE-1 is unsilenced following mRNA entry to the cell, leading to reverse transcription of full length vaccine mRNA sequences, and nuclear entry. This finding should be a major safety concern, given the possibility of synthetic mRNA-driven epigenetic and genomic modifications arising.

Your genetic code is made up of a different, but related, molecule to the vaccine mRNA, known as DNA, or deoxyribonucleic acid. And mRNA can't insert itself into your DNA for two reasons. One, both molecules have a different chemistry. The second reason is vaccine mRNA and DNA are in two different parts of the cell. Our DNA stays in the nucleus. But vaccine mRNA goes straight to the cytoplasm, never entering the nucleus.

Contrary to initial claims that mRNA degrades harmlessly, emerging evidence suggests that synthetic sequences may embed within the human exome, disrupting essential genetic processes. As evidence of unintended genetic integration accumulates, a reevaluation of mRNA technology is imperative to prevent irreversible consequences for human health.

Dr. Paul Offit explains that even if tiny DNA fragments are present as impurities in mRNA vaccines, it is virtually impossible for them to integrate into the DNA of human cells in a way that would cause harms such as cancers or genetic changes. He notes that integration would require specific enzymes and conditions not provided by the vaccine and that the quantities involved are extremely small.

This suggests that the presence of a polyA tail in mRNA vaccines could theoretically make them susceptible to recognition by the L1 machinery, leading to reverse transcription and potential genome integration. While this is considered a rare event, the potential implications are significant, further underscoring the need for comprehensive research.

Across large-scale clinical trials and post-marketing pharmacovigilance data involving billions of administered doses of mRNA COVID-19 vaccines, regulators have not reported any signal consistent with vaccine mRNA integrating into human germline or somatic DNA. Regulatory reviews (FDA, EMA, MHRA and others) classify genome integration risk for mRNA platforms as theoretical to negligible, based on their biochemical properties (no nuclear entry, no reverse transcriptase or integrase, rapid degradation) and the absence of integration events in preclinical biodistribution and genotoxicity studies.

Regarding the question: "Do the results really indicate ... integration of the cDNA into the genome of this cell line?" No, they provide no evidence of that (see Figure 5 comments below). This paper is NOT reliable. As they fail to convincingly show the above points, and are working in a cell line system of questionable relevance to normal human cells in the body, this paper seems to have no real relevance to side-effects of the vaccine administered in the clinic.