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Nov 1, 2023 18 tweets 3 min read Read on X
We are excited to announce a $15M gift from Kanro: a philanthropic fund to support scientific research established by Vitalik Buterin, co-founder of Ethereum: finance.yahoo.com/news/polybio-r…
2/ The funding will support a second phase of research and clinical trials via the #LongCovid Research Consortium (LCRC): a global scientific collaboration to rapidly and openly study core biological drivers of Long COVID: polybio.org/longcovid
3/ This is Buterin's second $15M gift to the Consortium and will allow dozens of new projects to move forward. The focus will be the continued study and treatment of #SARS-CoV-2 persistence as a driver of LongCovid.
4/ LCRC research thus far demonstrates that reservoirs of the #virus can persist for months - or even years - in the tissue of Long COVID patients.
5/ "Mechanisms underlying Long COVID are not a mystery," says Dr. Amy Proal PhD, PolyBio's Chief Scientific Officer. "The persistence of SARS-CoV-2 in tissue is a major target for rapid #research and clinical trials."
6/ This is echoed by Buterin who states, "The research thus far [...] strongly suggests we should be looking at viral persistence as the deep cause of Long Covid."
7/ The LCRC Consortium recently published a Nature Immunology paper explaining that SARS-CoV-2 reservoirs may cause widespread dysfunction including clotting, #microbiome, and neuroimmune abnormalities: nature.com/articles/s4159…
8/ Better documenting these connections and determining mechanisms by which persistent virus could contribute to #Alzheimer's or other #neurodegenerative diseases are priorities for the research program.
9/ LCRC will also work to start clinical trials of affordable generic #drugs to target persistent virus. At @UCSFMedicine an expanded tissue biopsy program will allow researchers to better understand where #SARS-CoV-2 may be hiding in clinical trial participants.
@UCSFMedicine 10/ "We are now adding gut and lymph node biopsies, spike protein measurement and other analyses to several Long COVID clinical #trials," says Michael Peluso MD, Principal Investigator of the UCSF Long-term Impact of Infection with Novel #Coronavirus (LIINC) Study.
@UCSFMedicine 11/ Funding will also support Long COVID medical #clinic development to rapidly translate LCRC research and clinical trial findings into much-needed #patient care through collaboration with the Icahn School of Medicine at Mount Sinai.
@UCSFMedicine 12/ This includes the development of Long COVID-related clinical #education programs for #physicians and advanced practice providers, which will be available online for free.
@UCSFMedicine 13/ Mount Sinai’s Cohen Center for the Recovery from Complex Chronic #Illness (CoRE) will also add HEPA filters and germicidal UV devices to its building to clear airborne viruses & other aerosols from the air, and require N95 respirator use and COVID PCR testing from its staff.
@UCSFMedicine 14/ This infrastructure can be easily replicated at other centers. "People with Long COVID have the right to access care in spaces where they feel safe and do not have to fear reinfection" says Dr. David Putrino, The Nash Family Director of the CoRE.
@UCSFMedicine 15/ LCRC teams are moving rapidly and openly to share ideas and samples across dozens of different institutions, #laboratories, and clinics.
@UCSFMedicine 16/ "The fact that every new SARS-CoV-2 #infection may have the potential to become chronic and cause devastating illness is perhaps the single most concerning aspect of the #COVID-19 pandemic," says Proal.
@UCSFMedicine 17/ "Only by working rapidly and collaboratively can we truly determine how to prevent and treat #SARS-CoV-2 persistence."
@UCSFMedicine 18/ @MBVanElzakker @PutrinoLab @VirusesImmunity @MichaelPelusoMD @EJohnWherry @LocciLab @marcus_buggert @MaayanLevy_Lab @DrJudyStone @WStoneReports @TaylorLorenz @PamBelluck @sarahmforbes @awanrad

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More from @polybioRF

Dec 10, 2025
How PolyBio is driving forward ME/CFS research 🧵

In 2025, PolyBio’s cofounders helped identify biomarkers that divide ME/CFS patients into two subgroups. One group showed elevated MMPs & cytokines consistent with CNS inflammation; the other showed unique immune correlations linked to joint hypermobility.Image
2/ Researchers also found altered cytokine interactions, including disrupted fractalkine and eotaxin pathways, which may drive neuroinflammation and cognitive symptoms.
3/ PolyBio also awarded $1M to UCSF to expand the LIINC program into ME/CFS, using tissue biopsy and advanced ImmunoPET-CT imaging to study viral persistence and immune activation in the brain, spinal cord, and bone marrow. Image
Read 9 tweets
Nov 18, 2025
BREAKING: New machine learning study identifies distinct Long Covid symptom endotypes across four major cohorts

👉🏻PolyBio-supported research uses questionnaire-based machine learning to successfully identify global Long Covid endotypes 🧵 Image
2/ Key Findings
•1,661 participants across four international cohorts
•9–12 endotypes per cohort, revealing distinct biological subgroups
•Three validated severity levels derived purely from symptoms
•Three disease trajectories including a progressive subgroup
•Ten global endotypes identified through cross-cohort meta-analysis
•Symptom surveys validated by health status and antibody responses

polybio.org/new-machine-le…
3/ A new preprint titled “Machine Learning Analysis of Post-Acute COVID Symptoms Identifies Distinct Clusters and Severity Groups” reports that low-cost patient-reported symptom questionnaires can reliably identify biologically meaningful Long COVID subgroups. Image
Read 12 tweets
Oct 11, 2025
Breaking: PolyBio-supported researchers at MGH/Harvard have developed a microfluidic device that quantitatively measures fibrinaloid clots (microclots): tiny, abnormal clumps in the blood that may play a key role in the biology of Long COVID: polybio.org/new-microfluid…Image
2/ The new device technology enables rapid standardized quantification (counting) of microclot burden from small blood samples.
3/ In a cohort of 45 pediatric #LongCovid patients and 14 healthy children, researchers found significantly higher microclot levels in LongCovid samples. The device demonstrated a 94% diagnostic accuracy, compared to just 66% for standard slide-based microclot counting.
Read 6 tweets
Oct 7, 2025
Dr. Morgane Bomsel is studying SARS-CoV-2 persistence in Long Covid patients’ platelets and megakaryocytes. Thus far, their early data shows that spike protein and viral RNA “can be found in at least 2/3 of the Long Covid patients’ [megakaryocytes]… this research suggests MKs may form SARS-CoV-2 reservoirs in Long Covid patients, which may produce platelets sheltering infectious SCV2.”
2/ PolyBio is supporting the continuation of Dr. Bomsel’s work to analyze platelet, megakaryocyte, and blood samples from Long COVID patients. The team is determining if persistent SCV2 infection of such cells is associated with deregulation (e.g., microclotting), changes in serotonin storage, or altered metabolism. Biological data will be correlated with patient clinical data in a multimodal analysis to define molecular targets associated with Long COVID.

polybio.org/projects/sars-…Image
3/ Dr. Bomsel’s presentation was a part of the Fall 2024 PolyBio symposium, available here:
Read 4 tweets
Aug 13, 2025
1/ BREAKING: Infections can be major drivers of Aging Processes, new PolyBio review paper delineates

A new scientific review written by PolyBio’s core team challenges the long-held assumption that human aging unfolds in a sterile environment. The authors argue that lifelong exposure to viruses, bacteria, fungi, and parasites—many of which persist in tissues and nerves—can directly accelerate aging processes.

sciencedirect.com/science/articl…Image
2/ “Pathogens, especially herpesviruses and certain microbes, produce proteins and metabolites that disrupt immune signaling, damage mitochondria, alter gene expression, and reshape the epigenetic landscape,” says paper first author and PolyBio President Dr. Amy Proal.
3/ “Our paper describes how infectious agents can hijack host cell machinery, manipulate longevity-regulating pathways, and contribute to age-related diseases such as Alzheimer’s, where amyloid plaques may form as part of an antimicrobial response.” Image
Read 12 tweets
Jul 25, 2025
1/ Breaking: PolyBio announces the appointment of Sarah Kalloch as its new Chief Operating and Innovation Officer

Sarah is a mission-driven leader with 20+ years of driving innovation at the intersection of strategy and systems change. She has started to work directly with PolyBio CEO Dr. Amy Proal & the Board of Directors to drive the Foundation’s strategic growth and operational excellence. 

polybio.org/polybio-resear…Image
2/ Sarah brings over two decades of leadership experience across mission-driven organizations to PolyBio. Most recently she served as Founding Executive Director of the Good Jobs Institute, where she championed scalable job-quality and operations strategies. During her tenure, the Institute partnered with more than 30 companies and investors, helping improve millions of frontline jobs.Image
3/ Sarah has additionally worked on turning bold ideas into impact at Physicians for Human Rights and Oxfam America. She holds a BA in Social Studies from Harvard University and an MBA with a focus on sustainable operations from the MIT Sloan School of Management.
Read 6 tweets

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