Jeffrey Epstein's estate is expected to begin handing documents over to Capitol Hill lawmakers on Monday, pursuant to a subpoena issued by the House Oversight Committee last month.

Trustees tasked with handling the late pedophile's matters were ordered to turn over a tranche of files, including his infamous "birthday book," as part of House lawmakers' investigation into Epstein and his accomplice Ghislaine Maxwell.

A committee aide told Fox News Digital on Monday that they expect the first production of documents from the Epstein estate that day, but they did not elaborate on what the first tranche might contain.

Fox News Digital also reached out to the lawyer representing Epstein's estate for comment.

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Committee Chair James Comer, R-Ky., sent a letter on Aug. 25, requesting a slew of documents by Sept. 8.

"It is our understanding that the Estate of Jeffrey Epstein is in custody and control of documents that may further the Committee’s investigation and legislative goals. Further, it is our understanding the Estate is ready and willing to provide these documents to the Committee pursuant to a subpoena," Comer wrote at the time.

Subpoenaed documents include all entries in a book compiled by Maxwell for Epstein's 50th birthday, Epstein's will, and information on his 2008 non-prosecution agreement.

Lawmakers hope that the "birthday book," which allegedly includes personalized messages from Epstein's friends and associates, will shed light on his personal connections. The information is likely to be dated, however, with the book having been compiled in 2003.

Information is also being sought on Epstein's financial transactions, call and visitor logs, and "any document or record that could reasonably be construed to be a potential list of clients involved in sex, sex acts, or sex trafficking facilitated by Mr. Jeffrey Epstein," according to a copy of the subpoena viewed by Fox News Digital.

An attorney representing the executors of Epstein's estate told Fox News Digital last month, "As the Co-Executors have always said, they will comply with all lawful process in this matter, and that includes the Committee’s subpoena."

Comer has subpoenaed a litany of individuals, as well as the Department of Justice (DOJ), for information related to Epstein.

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He is also bringing in Alexander Acosta, a former Trump administration labor secretary who also served as U.S. attorney for the Southern District of Florida when Epstein entered into a non-prosecution agreement with the federal government in 2008, for a transcribed interview on Sept. 19.

He and other members of the House Oversight Committee met with Epstein survivors last week.

About 33,000 pages of files turned over by the DOJ have already been released by the House Oversight Committee, though the vast majority of those were already public knowledge.

A virus long thought to be harmless may actually play a role in Parkinson’s disease, a condition that affects more than one million Americans.

Northwestern Medicine scientists discovered Human Pegivirus (HPgV) in the brains and spinal fluid of people with Parkinson’s, but not in those without the disease. The results challenge decades of assumptions about the virus.

"HPgV is a common, symptomless infection previously not known to frequently infect the brain," Dr. Igor Koralnik, chief of neuroinfectious diseases at Northwestern, said in a press release.

"We were surprised to find it in the brains of Parkinson’s patients at such high frequency and not in the controls."

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The findings were published in the journal JCI Insight.

Researchers examined post-mortem brain tissue from 10 Parkinson’s patients and 14 people who died of other causes. The virus appeared in five of the 10 Parkinson’s brains and none of the 14 controls.

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It also turned up in spinal fluid samples, suggesting the virus could be active in the nervous system. Patients carrying HPgV showed more advanced brain changes tied to Parkinson’s, including protein buildup and altered brain chemistry.

The team didn’t stop at brain tissue. Using blood samples from more than 1,000 participants in a project led by The Michael J. Fox Foundation, researchers saw the same immune system changes linked to the virus.

Even more striking: patients with a Parkinson’s-related mutation in the LRRK2 gene responded differently to HPgV than those without the mutation.

"This suggests it could be an environmental factor that interacts with the body in ways we didn’t realize before," Koralnik said. 

"It may influence how Parkinson’s develops, especially in people with certain genetic backgrounds."

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Parkinson’s disease is the second most common brain disorder after Alzheimer’s, according to the National Institute of Neurological Disorders and Stroke. While a small percentage of cases are inherited, most patients don’t have a family history, and the cause has remained unknown.

If HPgV truly plays a role, it could help explain why some people develop Parkinson’s while others do not. It could also open the door to new treatments targeting viruses or the immune system.

"The study detected traces of HPgV more often in brains of people with Parkinson’s disease than in controls. This raises the possibility of a link between viral exposure and Parkinson’s, but it’s far too early to say the virus causes the disease," Dr. Joel Salinas, a behavioral neurologist and associate professor at NYU Grossman School of Medicine, told Fox News Digital.

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Salinas, who was not involved in the study, also said that much larger and longer-term studies will be needed to determine whether this association has real clinical significance. 

"For now, people should know this is early research and not a reason to worry—there’s no overwhelming evidence yet that this virus causes Parkinson’s, similar to how work on herpesviruses in Alzheimer’s has suggested a possible link but remains to be fully established."

According to the Parkinson’s Foundation, nearly 90,000 Americans are diagnosed every year. That number is expected to reach 1.2 million by 2030.

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The Northwestern team plans to expand their study to see how often HPgV is found in people with Parkinson’s versus healthy controls, and whether other viruses may be involved.

"For a virus that was thought to be harmless, these findings suggest it may have important effects in the context of Parkinson’s disease," Koralnik said. 

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"We also aim to understand how viruses and genes interact; insights that could reveal how Parkinson’s begins and could help guide future therapies."