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St. Jude Children’s Research Hospital has reaffirmed its pivotal role in the global fight against pediatric cancer with its recent redesignation as a World Health Organization (WHO) Collaborating Centre for Childhood Cancer. This prestigious status not only honors St. Jude’s deep-rooted commitment to advancing pediatric oncology but also solidifies its unique position as the sole WHO Collaborating Centre exclusively dedicated to childhood cancer worldwide. The designation reflects the hospital’s substantial contributions in providing strategic, scientific, and technical expertise to WHO’s mission, thereby accelerating progress in improving survival rates and care quality for children afflicted by cancer internationally.

At the heart of this collaboration lies a fundamental conviction championed by St. Jude: a child’s geographic location must never dictate their likelihood of surviving cancer. Under the leadership of Dr. James R. Downing, St. Jude’s President and CEO, the institution actively partners with global health bodies, governments, academic institutions, and clinical providers to broaden access to comprehensive cancer care. These alliances are designed to fortify health infrastructures and knowledge exchange systems, ensuring equitable delivery of lifesaving therapies and supportive services for pediatric patients, irrespective of their origin.

St. Jude’s designation is not isolated but part of a sophisticated network of over 800 WHO collaborating centers distributed across more than 80 nations. Uniquely, St. Jude is dedicated exclusively to pediatric malignancies, making it an unparalleled resource in formulating childhood cancer policies and disseminating best practices. Since its inception as a WHO Collaborating Centre in 2018, St. Jude has leveraged its expertise to influence national health policies, boost technical capacity, and nurture multisectoral collaborations. These endeavors have collectively enhanced the global capacity to prevent, diagnose, and treat childhood cancers, shaping a more coordinated and effective response to pediatric oncology challenges.

The influence of St. Jude’s WHO Collaborating Centre extends significantly through the St. Jude Global Alliance, which encompasses over 400 institutions and foundations in more than 90 countries. This expansive network forms a robust implementation infrastructure that translates scientific discoveries into real-world improvements in pediatric cancer outcomes. As described by Dr. Catherine Lam, the Centre’s Director and a faculty clinician-scientist, this alliance fortifies the hospital’s academic and clinical expertise on an international scale, fostering innovation and knowledge transfer essential for tackling global disparities in pediatric oncology.

One of the landmark achievements stemming from this collaboration was the establishment of the WHO Global Initiative for Childhood Cancer (GICC) in 2018. This ambitious program targets a doubling of survival rates globally, aiming for at least 60% survival for childhood cancers by 2030. Complementing this, the 2025 launch of the Global Platform for Access to Childhood Cancer Medicines underscores a coordinated approach to overcoming barriers in medication availability and affordability—critical hurdles in low- and middle-income countries where cure rates have historically lagged behind.

The expanded remit of the WHO Collaborating Centre now includes not only oncology but also the management of catastrophic pediatric diseases such as sickle cell disease, representing an integrated strategy that acknowledges the complex medical and supportive care needs of these patient populations. This progression enhances the Centre’s potential to impact child health comprehensively, integrating palliative care and systems strengthening into its core objectives.

Driving the Centre’s evolving agenda, Dr. Carlos Rodriguez-Galindo, Executive Vice President and Chair of the Department of Global Pediatric Medicine, emphasizes the aim to ameliorate survival rates in regions where it has remained below 30%. Expanding the scope of pediatric care to encompass palliative services and holistic disease management initiatives ensures that children everywhere receive not only curative treatments but also dignified, comprehensive care throughout their disease trajectory.

The WHO recognizes the critical role of collaborating centers such as St. Jude in facilitating technical support, knowledge dissemination, and health system strengthening at the country level. According to Dr. Roberta Ortiz, medical officer at WHO Headquarters and focal point for the GICC, these centers bring invaluable expertise and tools that underpin successful implementation of global childhood cancer strategies. This partnership model is instrumental in translating high-level policy into practical actions that directly benefit pediatric populations.

St. Jude’s profound impact on national cancer control planning ensures that pediatric oncology is meaningfully integrated into broader health systems and governance frameworks. By embedding child-specific needs within policy platforms, the hospital advances a child-centered approach to cancer care that elevates research-driven innovations and frontline clinical breakthroughs. This comprehensive strategy enhances survivorship and quality of life for pediatric patients on a global scale.

In addition to its leadership in pediatric oncology, St. Jude also maintains a longstanding designation as a WHO Collaborating Centre for Influenza, a role it has fulfilled since 1975. This dual recognition highlights the institution’s diverse expertise and sustained contributions to global health, reaffirming its status as a vanguard institution whose research and clinical programs catalyze transformative progress across multiple domains of pediatric medicine.

St. Jude Children’s Research Hospital’s redesignation as the exclusive WHO Collaborating Centre dedicated to childhood cancer embodies the epitome of global health collaboration. Anchored in robust scientific inquiry, innovative care models, and strategic partnerships, this status propels forward a shared vision of equitable cancer care access and improved outcomes for all children—irrespective of geography. As the global pediatric oncology landscape evolves, St. Jude’s leadership and expansive alliance ensure that the journey toward eradicating childhood cancer is both scientifically rigorous and compassionately inclusive.

Subject of Research: Pediatric cancer, childhood oncology, global health collaboration

Article Title: St. Jude Reaffirmed as WHO Collaborating Centre Driving Global Pediatric Cancer Progress

News Publication Date: June 17, 2026

Web References:

• https://www.stjude.org/research/departments/global-medicine/who-collaborating-centre-for-childhood-cancer.html
• https://www.stjude.org/global/collaborating-to-cure/global-initiative.html
• https://global.stjude.org/en-us/featured/global-platform-for-access-to-childhood-cancer-medicines.html

Image Credits: St. Jude Children’s Research Hospital

Keywords: Pediatric cancer, Childhood cancer survival, WHO Collaborating Centre, Global pediatric oncology, St. Jude Global Alliance, Childhood cancer treatment access, Global Initiative for Childhood Cancer, Pediatric oncology research

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A groundbreaking study led by researchers at the USC Mark and Mary Stevens Neuroimaging and Informatics Institute has unveiled critical nuances in how amyloid pathology correlates with cognitive impairment and genetic risk factors across diverse populations. By leveraging advanced neuroimaging datasets from over 17,000 participants, including a substantial subset of Hispanic individuals, the team shed light on population-specific differences in Alzheimer’s disease biology that challenge prevailing assumptions. Their findings, recently published in Alzheimer’s & Dementia: The Journal of the Alzheimer’s Association, underscore the importance of inclusive research approaches for unraveling Alzheimer’s heterogeneity and guiding precision therapeutics.

Amyloid-beta protein accumulation in the brain, manifesting as plaques, is a hallmark pathological feature of Alzheimer’s disease. Traditionally, the burden of amyloid deposition has been closely linked to clinical symptoms of cognitive decline and to the presence of the APOE ε4 allele—a potent genetic risk factor for late-onset Alzheimer’s. However, the USC-led study reveals that these relationships manifest differently in Hispanic populations compared to non-Hispanic whites. Despite having cognitive impairment or carrying APOE ε4, Hispanic participants generally showed lower amyloid levels, suggesting alternative or additional mechanisms may contribute to dementia risk and progression in this group.

Central to this study’s success was the innovative use of the Global Alzheimer’s Association Interactive Network (GAAIN), a powerful data-sharing platform developed at Stevens INI. GAAIN enables researchers worldwide to harmonize and analyze large-scale Alzheimer’s datasets, overcoming longstanding barriers posed by heterogeneity in imaging technology, tracers, and data acquisition methods. The platform facilitated the integration of amyloid PET imaging data standardized using the Centiloid scale—an analytical tool designed to normalize amyloid burden measurements across different scanners and imaging protocols—allowing for unprecedented cross-cohort comparisons.

The research consortium amalgamated data from five prominent sources, including the Anti-Amyloid Treatment in Asymptomatic Alzheimer’s Disease study, the Alzheimer’s Disease Neuroimaging Initiative, and the Health and Aging Brain Study–Health Disparities among others. This meta-analytic approach enabled comprehensive examination of amyloid burden across a racially and ethnically diverse sample, encompassing a wide clinical spectrum from normal cognition to dementia. The depth and breadth of this database allowed for refined statistical analyses that accounted for confounding factors such as age, sex, level of education, and cognitive performance.

Investigators utilized the Centiloid scale as a unifying metric to quantitatively assess amyloid load. This scale transforms heterogeneous imaging data into standardized units, facilitating direct comparisons across multi-site studies that previously lacked uniformity. By employing such quantitative rigor, the team demonstrated that while amyloid positivity correlated strongly with cognitive impairment overall, Hispanic individuals displayed a distinct profile characterized by comparatively lower amyloid deposition at equivalent levels of cognitive deficit, even when carrying the APOE ε4 allele.

Genetic analyses further illuminated the complexity of disease risk. Although APOE ε4 status increased amyloid positivity in both Hispanic and non-Hispanic white participants, the strength of this association was markedly attenuated in Hispanic cohorts. Specifically, non-Hispanic white carriers had over a fourfold increased likelihood of amyloid pathology, whereas this risk was approximately two and a half times in Hispanic carriers. These differential risks suggest that genetic and environmental contexts modulate Alzheimer’s pathophysiology in a population-specific manner.

Importantly, the study cautions against simplistic interpretations that lower amyloid levels imply lower dementia risk in Hispanic populations. In fact, epidemiological data shows that Hispanic adults experience a disproportionate burden of dementia. The researchers propose that the pathogenesis in these populations may be driven by a confluence of factors beyond amyloid accumulation, including vascular comorbidities, social determinants of health, and potentially other as-yet-unidentified biological processes. This underscores the need for multi-dimensional investigative frameworks.

As anti-amyloid therapies emerge as frontline interventions in Alzheimer’s management, understanding population-level variability in amyloid pathology is paramount. Treatments targeting amyloid may yield differential efficacy, and precision medicine approaches must account for the heterogeneity elucidated by this study. Tailoring interventions based on nuanced biomarker profiles and genetic backgrounds could enhance therapeutic outcomes and equity in clinical care.

The study authors emphasize the necessity for further research with larger, more detailed Hispanic cohorts. Granular data on Hispanic ancestry and longitudinal follow-up will be critical to decipher the dynamics of amyloid deposition and cognitive decline. Additionally, incorporating assessments of vascular health and other metabolic factors may clarify contributors to the divergent amyloid-cognition relationships observed.

Stevens INI director Arthur W. Toga highlights the transformative potential of open data platforms like GAAIN for accelerating Alzheimer’s research across historically underrepresented populations. By fostering collaboration and data integration, these resources enable scientists to capture the biological complexity of dementia and propel the development of innovative, inclusive treatment paradigms.

In summary, this extensive meta-analysis not only challenges conventional paradigms regarding amyloid pathology and genetic risk in Alzheimer’s disease but also advocates for a broader, more inclusive scientific lens. As the global population ages and diversifies, such insights will be essential to addressing the multifaceted challenges of dementia care and research.

Subject of Research: People
Article Title: Association of cognitive impairment and APOE ε4 with Centiloids in Hispanic and non-Hispanic White cohorts
News Publication Date: 11-Jun-2026
Web References: https://ini.usc.edu, https://gaain.org
References: Alzheimer’s & Dementia: The Journal of the Alzheimer’s Association, DOI: 10.1002/alz.71586
Image Credits: Stevens INI
Keywords: Alzheimer disease, Neuroscience, Genetics, Aging populations

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In the relentless quest to push the boundaries of semiconductor technology, researchers from the National University of Singapore (NUS) in collaboration with Applied Materials have unveiled a groundbreaking advancement that promises to reshape the future of microchip manufacturing. As the global semiconductor market races towards the trillion-dollar mark propelled by demand for faster computing, smarter artificial intelligence, and more compact electronic devices, addressing fundamental physical constraints in chip architecture has become a critical imperative. A newly developed atom-thin coating — a monolayer of crystalline tungsten disulfide (WS₂) — presents a transformative solution, elegantly overcoming a pressing bottleneck in chip miniaturization with profound implications for speed, reliability, and efficiency.

Traditional transistor miniaturization has long driven performance gains in integrated circuits. However, as transistors and their connecting copper wires shrink into the sub-10 nanometer regime, the surrounding protective layers—essential for maintaining electrical integrity—resist further reduction. These layers, typically tantalum-based barrier and liner materials, must maintain a minimum thickness of around four nanometers. In future nanoscale interconnects, these coatings may consume nearly half the cross-sectional area of the copper wiring, severely throttling electrical conductivity and device speed. The NUS and Applied Materials team’s innovation resides in synthesizing an ultrathin WS₂ film, less than a nanometer thick, that simultaneously fulfills the dual role of barrier and liner, drastically slashing thickness without compromising performance.

This pioneering coating, grown on industry-standard 200-millimeter silicon wafers using a low-temperature thermal atomic layer deposition process at 350 degrees Celsius, exemplifies a remarkable confluence of scalability and compatibility. The process avoids plasma, guaranteeing conformal deposition with precise thickness control down to a single atomic layer. Notably, this method achieves uniform coverage in high aspect ratio trenches, exceeding 95% conformity even at depth-to-width ratios of 10:1. Such attributes position this WS₂ monolayer as a viable drop-in replacement within existing semiconductor fabrication lines, bridging the formidable divide between laboratory breakthroughs and industrial applicability.

The WS₂ film’s threshold thickness of approximately 0.7 nanometers contrasts starkly with the conventional six nanometer standard, enabling a future 20-nanometer-wide copper wire to retain over 90% of its conductive cross-section. This relatively unobstructed copper path translates into reduced electrical resistance and elevated current carrying capacity, directly enhancing chip speed and energy efficiency. Extensive electrical testing demonstrated a monumental reduction in resistance—exceeding a factor of one million—compared to uncoated counterparts. The superior adhesion properties offered by the WS₂ liner promote smooth and continuous copper film formation, vital for producing reliable, defect-free interconnects at such ultrathin dimensions.

Beyond adhesion, the WS₂ monolayer serves as a robust diffusion barrier that impedes copper migration into silicon and dielectric materials under thermal and electrical stress. In accelerated aging tests, conventional barrier-free copper rapidly reacted with underlying silicon, forming deleterious intermetallic compounds and defect clusters. In stark contrast, WS₂-coated samples exhibited no such degradation, maintaining pristine interfaces even after prolonged exposure. Remarkably, devices using the atomically thin barrier exhibited projected lifetimes surpassing unprotected designs by an order of magnitude, signaling a dramatic leap in device durability.

Central to the WS₂ film’s efficacy is its polycrystalline structure composed of myriad tiny grains and grain boundaries arranged in random orientations. Unlike continuous single crystals, where aligned grain boundaries can form direct diffusion channels, the staggered grain orientation in multilayer WS₂ films creates a complex labyrinth that frustrates copper atom penetration akin to the staggered offsets in a well-built brick wall. This insight, derived from computational modeling by NUS chemists, identifies nanoscale grain architecture as a key parameter in optimizing barrier functionality, challenging the entrenched paradigm that perfect crystallinity is always advantageous.

The discovery that a single atomic layer can supplant the combined barrier and liner stack confronts long-held assumptions in semiconductor interconnect design. Prior industry standards dictated separate layers with cumulative thicknesses of several nanometers to provide necessary protection and adhesion. By collapsing these essential roles into an atomically thin WS₂ sheet, researchers open new vistas for continuing Moore’s Law scaling into unprecedented regimes. Professor Silvija Gradečak, co-director of the NUS-Applied Materials Corporate Lab, emphasizes that this fundamental shift in approach heralds a new class of interconnect architectures tailored to atomically precise materials engineering.

The process’s compatibility with low thermal budgets—vital for avoiding damage to complex multilayer device stacks—and its wafer-scale uniformity underscore its readiness for integration into contemporary manufacturing ecosystems. These breakthrough properties allow semiconductor producers to adopt WS₂-based coatings without extensive equipment overhauls or processing disruptions, facilitating rapid technology transfer. Dr. Hippolyte Astier highlights that such advancements transcend the immediate generation of chips, positioning the industry to harness this technology across multiple forthcoming innovations extending out to 2037 and beyond.

Applied Materials’ Director of Engineering, Dr. John Sudijono, notes the criticality of merging academic ingenuity with industrial constraints through the Corporate Lab framework. The collaborative environment enabled iterative validation of WS₂ films under realistic fabrication conditions, ensuring the material meets demanding reliability, scalability, and process compatibility benchmarks. This convergence of theory, experimentation, and commercialization is essential to bridging the notorious gulf between laboratory demonstrations and full-scale production deployments in semiconductor manufacturing.

Looking forward, the team is exploring refined control over WS₂ grain orientation and microscopic interface phenomena to fine-tune long-term stability and electrical behavior. Further studies aim to exploit the low-temperature vapor-phase growth technique to deposit other two-dimensional materials within diverse chip components, expanding the scope of atomic-scale coatings in integrated circuit design. This foundational research not only sets a new standard for interconnect barriers and liners but also signals the inception of a broader materials revolution in microelectronics.

The ultrathin WS₂ monolayer innovation thus represents a monumental stride towards sustaining the pace of semiconductor evolution. By ingeniously combining barrier and liner functionality into a single atomic layer with industrially scalable fabrication, this discovery resolves a pressing miniaturization bottleneck, empowering the continuation of chip performance scaling in an era where every nanoscale dimension counts. As the semiconductor industry confronts the ultimate physical limits of transistor and interconnect shrinking, atomically precise materials like WS₂ will be vital enablers of future computational breakthroughs, underpinning the technology transformations of tomorrow.

Subject of Research: Not applicable

Article Title: Low-temperature wafer-scale growth of ultrathin tungsten disulfide for bifunctional interconnect barriers and liners

News Publication Date: 31-Mar-2026

Web References: https://doi.org/10.1038/s41928-026-01592-6

Image Credits: College of Design and Engineering, NUS

Keywords

Semiconductors, Microelectronics, Materials engineering, Materials science

Greenland, with its vast icy expanses and challenging environment, harbors a rich tapestry of human history etched into its landscape over millennia. The island’s archaeological record tells tales of successive human inhabitations that have left behind more than just stories and artefacts; it preserves complex biological legacies embedded within ancient refuse deposits known as middens. These middens, essentially ancient domestic rubbish heaps composed of animal bones, excrement, mollusk shells, and various artefacts, offer not only archaeologists but also microbiologists a unique window into the past. Their frozen state in Arctic permafrost has allowed microbial communities trapped over thousands of years to persist, raising compelling questions about the nature and dynamics of these ancient microbial populations.

The study of microbial life within these middens is far more than a niche query; it intersects with pressing concerns about human health, ecosystem integrity, and the potentially resurging threats posed by ancient pathogens. As the Arctic warms at an alarming rate—currently estimated to be three to four times faster than the global average—the thawing permafrost raises fears that dormant microbes, including pathogens from bygone eras, might be released back into the environment. The microbial fingerprints preserved in these deposits chronicle past human and animal interactions, environmental conditions, and disease ecology, providing invaluable data to reconstruct historical microbiomes and understand their evolution through millennia.

In groundbreaking research reported recently in Frontiers in Microbiology, scientists led by Dr. Frank Møller Aarestrup of the Technical University of Denmark embarked on an ambitious project to characterize the microbial composition of Greenland’s archaeological middens. Their experimental approach involved rigorous sampling of frozen middens from multiple chronological layers spanning approximately 4,500 years of human history—from the earliest Paleo-Inuit cultures to medieval Norse settlers and early Danish colonists. Employing advanced DNA sequencing techniques and bioinformatics, the team reconstructed diverse and complex bacterial communities present in these ancient deposits and compared them with microbes from surrounding pristine permafrost soils, unperturbed by human activity.

One of the striking revelations from this study was the extraordinary microbial richness residing within the middens. From as few as nine to as many as 202 bacterial species per midden, the researchers identified an aggregate of 1,207 distinct bacterial species across all samples. Intriguingly, many species could not be identified beyond broad taxonomic categories, underscoring the vast unknown microbial diversity in Arctic archaeological contexts and the general paucity of data on cold-environment microbiomes. This discovery shines a light on the hidden microbial world preserved under layers of ice and soil, aspects that have remained largely unexplored until now.

The middens invariably featured richer bacterial communities than adjacent soils, affirming their role as biological archives chronicling the legacy of human presence and activity. Among the deposits, middens linked to the Paleo-Inuit exhibited bacterial compositions closely resembling natural soil communities, suggesting a fading microbial imprint over thousands of years. Conversely, Norse and colonial middens revealed bacterial assemblages heavily influenced by human-related waste, livestock farming, and domestic activities, evidencing the intimate connection between past humans, their animals, and local microbes.

Practically, these midden microbiomes hosted a variety of bacteria associated with human and animal hosts. Notably, the researchers detected species such as Clostridium massilliamazoniense, innocuous but indicative of human fecal matter presence, alongside more pathogenic taxa like Clostridium baratii, which can lead to botulism, and Paeniclostridium sordellii, linked to severe human illnesses including toxic shock syndrome and gas gangrene. Such findings highlight how midden microbial communities serve as time capsules, preserving signatures of diseases that may have affected historic populations, which hold relevance to the emerging field of paleomicrobiology.

Furthermore, the microbial composition differed markedly depending on the nature of the organic waste constituting each midden. Middens from Greenland’s early colonial era, particularly those in Nuuk containing decomposing seal skins, harbored Clostridium perfringens, a bacterium notorious for causing food poisoning. Meanwhile, middens filled with animal carcasses were dominated by gut bacteria such as Romboutsia species and Paraclostridium sordellii. Early Norse deposits, rich in decomposing bones, exhibited an abundance of unknown species within the Proteobacteria and Clostridiaceae groups. This substrate-specific microbial differentiation provides new perspectives on historic dietary patterns, hunting practices, and animal domestication in Greenland.

An essential aspect of the team’s work was the investigation of antimicrobial resistance (AMR) genes within these ancient bacterial genomes. The researchers uncovered a diverse array of resistance genes, demonstrating that ancient permafrost soils and middens contained bacteria equipped with antimicrobial defense mechanisms. The persistence of these genes in both ancient and modern soil layers indicates the long-term stability and environmental retention of genetic elements conferring antibiotic resistance, a critical insight into the evolutionary history of AMR and its environmental reservoirs. Despite this, spatial analyses suggested that upon thawing, microbes from the middens do not tend to disperse widely, limiting the risk of pathogen spread under current conditions.

Importantly, the authors emphasized that the immediate threat to public health from ancient pathogens emerging from Greenland’s thawing middens is currently low. Dr. Saria Otani, co-author and associate professor, noted that the microbiome released from melting permafrost appears to be rapidly outcompeted or replaced by contemporary environmental microbes, reducing opportunities for ancient pathogens to proliferate. Nonetheless, this dynamic balance could shift with accelerating climate warming, necessitating vigilant monitoring.

To that end, the researchers advocate for the incorporation of microbiome characterization into routine archaeological protocols during future excavations at permafrost sites. The spatially and temporally resolved microbial data obtained could serve as early warning markers for pathogen emergence and inform conservation strategies during the rapidly unfolding Arctic environmental transition. This interdisciplinary study brilliantly exemplifies how combining microbiology, archaeology, and environmental science can unlock secrets buried in ice and soil, informing both our understanding of the past and preparations for an uncertain microbial future.

This pioneering research hence sets a precedent for microbiome-informed archaeology, where the “dustbins of history” are not merely relics of human culture but bearers of ancient microbial life, antimicrobial resistance, and metabolic potential. By resolving these ancient microbial ecosystems, scientists are better positioned to trace human-animal-environment interactions across centuries and to anticipate the potential consequences of microbial releases driven by climate change.

As global temperatures continue their inexorable rise, the Arctic remains a hotspot for uncovering hidden biogeochemical dynamics playing out beneath melting permafrost. Greenland’s middens now stand as invaluable archives that illuminate the intertwined narratives of human migration, settlement, livestock domestication, and the microbial world shaped by these processes. The revelations from these frozen repositories reinforce a broader vision of archaeology enriched by microbial ecology, where ancient microbial communities provide vital clues for understanding human history, health, and environmental change on a planetary scale.

---

Subject of Research: Not applicable

Article Title: Microbial composition of archaeological middens: Tracing Human Footprints Through Centuries in Greenland’s Ancient Settlements

News Publication Date: 17-Jun-2026

Web References:
Frontiers in Microbiology Article

Image Credits: Louise Hindborg Mortensen

Keywords: Archaeology, Animal domestication, Anthropology, Archaeological sites, Prehistory, Microbial ecology, Infectious diseases, Gastrointestinal disorders, Health and medicine, Human biology, Public health, Land use, Iron Age

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