Neurology & Neurosurgery

sick boy with malaria

New guidance to optimize blood sugar monitoring in cerebral malaria

A Children’s National Hospital research team based in Malawi pinpointed the optimal duration and frequency for monitoring the blood glucose in children with cerebral malaria, providing a roadmap to improve the treatment and outcomes for young patients diagnosed with the life-threatening disease.

Published in the American Journal of Tropical Medicine and Hygiene, the findings analyzed data from 1,674 pediatric cases to recommend the best schedule for periodic bedside point-of-care laboratory testing in children with cerebral malaria (CM). Currently, World Health Organization (WHO) guidelines state that blood glucose should be monitored in all forms of severe malaria, but they do not include advice on the timing or duration of the measurements.

Children’s National neurologist Douglas Postels, M.D., M.S., led a team of trainees from Howard University, The George Washington University, the University of Washington and Children’s National to collect and analyze patient data that led to the creation of evidence-based recommendations for glucose monitoring.

“If blood glucose in children with severe malaria is too low, the child is at high risk of death,” Dr. Postels said. “What we found in this research study is both interesting and important, and we hope our study results will help the WHO in creating evidence-based guidelines for blood glucose monitoring in children with cerebral malaria.”

The big picture

In 2021, 247 million people contracted malaria worldwide, killing some 619,000 primarily in Africa. Almost 80% were children under 5 years old, making it one of the most virulent pediatric diseases in the world. Many who survive experience significant neurologic, cognitive and behavioral morbidities.

Dr. Postels works at Queen Elizabeth Central Hospital in Blantyre, Malawi, caring for patients on the Pediatric Research Ward and conducting research aimed at improving outcomes. The clinical team works without access to many medical tools that are considered standard throughout more advanced economies. Yet this team has one of the lowest mortality rates for cerebral malaria across Africa, thanks to their ongoing research to better understand the pathophysiology of malaria and improve its treatment.

The challenges are immense: During COVID-19, they battled supply chain issues that frustrated repairs on an aging MRI scanner. After the second tropical cyclone struck in the last two years, Blantyre was left without power for a week and without water for a month.

“You can imagine trying to run a hospital with no water,” Dr. Postels said. “During Cyclone Freddy, it was raining like crazy, and people were collecting water in bins—anything they could collect it in — to use for handwashing, as well as trying to clean instruments and supplies.”

What they’re saying

Using evidence-based guidelines to optimize care becomes important in sub-Saharan Africa, where resources are scarce. Running laboratory-based blood studies frequently is an inefficient use of supplies and laboratory reagents. Results of point-of-care testing are also available more rapidly and at less cost than studies performed in hospital labs.

An accompanying editorial in the journal said the new research on glucose monitoring in cerebral malaria “provides valuable data that could help clinicians in resource-limited settings improve CM management with more efficient use of available resources.” The work is increasing calls for further study and updates to international guidelines.

The bottom line

According to the team’s analysis, blood glucose should be measured in children with CM on admission and every six hours for the first 24 hours. If all results in the first 24 hours are normal, clinicians can stop testing.  If any blood sugar levels in the first 24 hours are low, the patient’s blood glucose should be checked for another 24 hours.

“This testing strategy captures 100% of the children who have a glucose level of 2.2 mmol/L or less, the definition of hypoglycemia in severe malaria,” Dr. Postels said.  “We want to do enough, but not too much.”

The overarching goal for Dr. Postels and the trainees who join him in Blantyre is improving care.  “If we can help clinicians better care for children with cerebral malaria, then hopefully we can make a small contribution to decreasing the death rate and improve neurologic outcomes of the children who survive,” he said. “That’s my hope.”

Eugene Hwang

Eugene Hwang, M.D., named as William Seamus Hughes Professor of Neuro-oncology and Immunology

Eugene HwangChildren’s National Hospital named Eugene Hwang, M.D., the inaugural William Seamus Hughes Professor of Neuro-oncology and Immunology. This professorship is the first at Children’s National to focus exclusively on these two pediatric specialties.

Dr. Hwang serves as associate chief of oncology, director of the Clinical Neuro-oncology Immunotherapeutics Program and director of the Neuro-oncology Fellowship Program. He is an associate professor of pediatrics at the George Washington University School of Medicine and Health Sciences.

About the award

Dr. Hwang joins a distinguished group of 42 Children’s National physicians and scientists who hold an endowed chair. Professorships at Children’s National support groundbreaking work on behalf of children and their families and foster new discoveries and innovations in pediatric medicine. These appointments carry prestige and honor that reflect the recipient’s achievements and donor’s forethought to advance and sustain knowledge.

Dr. Hwang has dedicated much of his career to the pursuit of new therapies that improve outcomes for children with brain cancer. He has led many early phase clinical trials on immunotherapeutics, gene therapy and new targeted agents. He participates in international studies focused on reducing harmful side effects of standard treatments. He serves as the principal investigator for the Pediatric Brain Tumor Consortium and co-chairs their Immunotherapy Working Group. Dr. Hwang also lends his time to grant review committees and the scientific advisory boards of several large foundations.

Claire and Kevin Hughes, through their vision and generosity, are ensuring that Dr. Hwang and future holders of this professorship will launch new initiatives to rapidly advance the fields of pediatric neuro-oncology and immunotherapy, elevate our leadership and improve outcomes for children diagnosed with brain cancer.

About the donors

Claire and Kevin Hughes established this professorship with support from community partners in loving memory of their son William Seamus Hughes (Willie). Their dedication to giving all children a chance for life has helped launch groundbreaking trials and research at Children’s National, including one of the first trials in the U.S. to use cell therapy to treat brain tumors.

“Working with Willie meant working with a young man who embodied a resilient, cheerful spirit that was truly remarkable,” said Dr. Hwang. “It meant fighting side-by-side with a walking inspiration, who I continue to remember and who continues to drive the mission of curing childhood brain cancer. I’m deeply honored to ensure that Willie’s spirit and bravery lives on in the promise to other families that face a devastating brain tumor diagnosis.”

mother and baby doing a telehealth call

Using telehealth to study babies born to mothers infected with SARS-CoV-2

mother and baby doing a telehealth call

Continued advancements in telehealth methods to follow child neurodevelopment will help ensure robust child follow-up and inclusion of diverse cohorts.

Multiple studies have shown that SARS-CoV-2 infection can impact pregnant mothers and their fetuses but more research is needed to understand the long-term impact on the neurodevelopment of these children as they get older. Child neurodevelopmental evaluations are typically performed in-person. Since the COVID-19 pandemic began, the transition to telehealth methods was needed.

Continued advancements in telehealth methods to follow child neurodevelopment will help ensure robust child follow-up and inclusion of diverse cohorts, says a commentary in JAMA Network Open.

Why it matters

Commentary author Sarah Mulkey, M.D., prenatal-neonatal neurologist at Children’s National Hospital, highlights a new study that used a novel telehealth method to look for neurodevelopmental differences in infants ages 6-12 months born to mothers with SARS-CoV-2 infection compared to nonexposed infants of the same age and found no differences in neurodevelopment among the two cohorts. The study adapted a standardized assessment to a telehealth method.

“The results of this study provide needed reassurance to the many mothers who have experienced SARS-CoV-2 infection during pregnancy,” says Dr. Mulkey.

What’s been the hold up in the field?

“Developmental assessments that rely on observation of infants’ developmental skills can naturally make the transition to a telehealth platform,” says Sarah Mulkey, M.D., prenatal-neonatal neurologist at Children’s National Hospital and commentary author. “General movement assessment is an observation-based assessment of infants that can be captured by a parent or caregiver on video, and it has been used in neurodevelopmental outcomes studies of children after antenatal SARS-CoV-2 exposure.”

Moving the field forward

Child outcomes research can have improved enrollment and continuity of participant follow-up due to the availability of remote assessments. Neurodevelopmental tools are being developed that can be used on a telehealth platform or by parent recorded videos.

Researchers from the Children’s National Congenital Zika Virus Program have also developed telehealth-based methods for child outcome research that has been utilized in international Zika outcome studies funded by the Thrasher Research Fund and the NIH.

Read the full commentary, Use of Telehealth Methods to Track Infant Neurodevelopment After In Utero SARS-CoV-2 Exposure, in JAMA Network Open.

illustration of a brain's neural activity

Debuting sonodynamic therapy with ALA to treat rare brain tumors

illustration of a brain's neural activity

Preclinical studies show that guided focused ultrasound and ALA can slow growth of gliomas and extend survival.

Children’s National Hospital is conducting a first-in-human study of aminolevulinic acid (ALA) sonodynamic therapy (SDT) for diffuse intrinsic pontine glioma (DIPG).

Preclinical studies led by experts at Children’s National have shown that SDT through MR guided focused ultrasound (MRgFUS) to activate protoporphyrin IX (PpIX), an ALA, can slow growth of gliomas and extend survival in animal models.

In a recently published technical communication in the Journal of Neuro-Oncology, the authors briefly detail the rationale and mechanism behind the use of SDT using ALA for DIPG, review criteria for patient inclusion, and describe the first patient selected for this clinical trial.

“Diffuse intrinsic pontine glioma (DIPG) is a devastating pediatric brain tumor that occurs in children between 2 and 9 years of age,” writes Hasan Syed, M.D., co-director of the Focused Ultrasound Program at Children’s National and lead author of the findings. “Despite standard therapy, prognosis remains poor with an average survival of 9–12 months after diagnosis.”

Future procedures will involve ascending drug and low-intensity focused ultrasound (LIFU) energy dose combinations with evaluations of pharmacokinetics and radiographic evidence of tumor physiological changes.

Screen grab of Dr. Terry Dean and Dr. Vittorio Gallo webinar

In the News: Regenerative brain cells and the circadian clock

Screen grab of Dr. Terry Dean and Dr. Vittorio Gallo webinar

“I am a pediatric intensivist, and I am very interested in some of the pathologies and conditions that I come across in the ICU. We hatched this question that revolved around the idea: what can we do for TBI (traumatic brain injury) patients to enhance their cellular regeneration? …  We looked at NG2-glia in particular, otherwise known as oligodendrocyte precursor cells. They are about 2-8% of the brain…. Do these cells respond to sleep and circadian rhythm? Is it a factor? Does it help? Does it hurt?”

Find out more about what Terry Dean, M.D., Ph.D., says he has learned about these and other questions through his recent research with interim Chief Academic Officer Vittorio Gallo, Ph.D. They join the Society for Neuroscience in a webinar on the circadian rhythms of these important brain cells and how their regeneration may be used someday to promote healing after brain injuries.

coronavirus and DNA

Will SARS-CoV-2 during pregnancy impact child’s neurodevelopment?

coronavirus and DNA

Sarah Mulkey, M.D., prenatal-neonatal neurologist at Children’s National, will lead the neurodevelopmental evaluations of the infants born to mothers with SARS-CoV-2 infection during pregnancy to understand any long-term neurological effects in offspring.

Scientists led by the Lieber Institute for Brain Development are studying how a mother’s SARS-CoV-2 infection during pregnancy affects the biology of the placenta and the corresponding trajectory of the child’s brain development, including the risk for neurodevelopmental disorders such as schizophrenia and autism. The work is made possible by a $3 million, five-year grant from the Eunice Kennedy Shriver National Institute of Child Health & Human Development, part of the National Institutes of Health.

The project stems from a collaboration between the Lieber Institute for Brain Development on the Johns Hopkins medical campus in Baltimore, Children’s National Hospital in Washington, D.C., and the Women’s Health Integrated Research Center at Inova Health System in Virginia.

The big picture

The group aims for a clearer picture of how a mother’s SARS-CoV-2 infection during pregnancy affects neurodevelopment in utero, the effects of which may manifest early in a child’s life. The researchers hope to understand how the infection interacts with other factors relevant to brain development, including genomic risk for neurodevelopmental disorders, maternal stress and social determinants of health.

The team will study whether the relationship between maternal SARS-CoV-2 infection and offspring brain development is mediated by changes in the biology of the placenta and the activation of the mother’s immune system. They will also gauge any differences in the effects of SARS-CoV-2 between female and male children and in the offspring of vaccinated and unvaccinated mothers.

Why it matters

Preliminary data show that pregnant people with symptomatic SARS-CoV-2 infections are more likely to have a preterm delivery, abnormalities in the placenta and prenatal and perinatal complications such as preeclampsia and fetal growth restriction. All these complications have been found to increase a child’s risk of neurodevelopmental disorders later in life.

What we hope to discover

Sarah Mulkey, M.D., prenatal-neonatal neurologist at Children’s National, will lead the neurodevelopmental evaluations of the infants born to mothers with SARS-CoV-2 infection during pregnancy to understand any long-term neurological effects in offspring. The researchers will evaluate the children’s neurodevelopment at both 24 and 36 months of age. This work builds upon Dr. Mulkey’s longitudinal neurodevelopmental evaluations in children exposed to Zika virus in utero.

“What we’ve learned is that even when babies don’t have Zika-virus-related birth defects, we still find differences in early child development compared to children who weren’t exposed to Zika virus,” said Dr. Mulkey. “With SARS-CoV-2, there is still so much we don’t know. But by better understanding the long-term impact of COVID exposure during pregnancy, we can ultimately find ways to prevent adverse outcomes.”

Drs. Wells and Kenworthy

Center for Neuroscience and Behavioral Medicine announces new leaders

Drs. Wells and Kenworthy

Elizabeth M. Wells, M.D., M. H. S., was named Senior Vice President of the Center for Neuroscience and Behavioral Medicine, and Lauren Kenworthy, Ph.D., was named division chief of Neuropsychology.

The Center for Neuroscience and Behavioral Medicine at Children’s National Hospital recently announced the appointment of two new leaders. Elizabeth M. Wells, M.D., M. H. S., was named Senior Vice President of the Center for Neuroscience and Behavioral Medicine, and Lauren Kenworthy, Ph.D., was named division chief of Neuropsychology.

Dr. Wells obtained her undergraduate degree in psychology and biology at Harvard University and her medical degree at the George Washington University School of Medicine and Health Sciences. She was an Intramural Research Training Award fellow at the National Institute of Mental Health and holds a master’s in Health Science from the NIH/Duke Clinical Research Training Program. She completed pediatrics and neurology training at Children’s National and joined the faculty in the Brain Tumor Institute in 2011.

Dr. Wells has led the Children’s National Inpatient Neurology program and developed the hospital’s multidisciplinary Neuro-immunology program into a destination program for unsolved neuroinflammatory diseases. She serves on numerous national and international associations and working groups and is a member of the scientific selection committee for the Child Neurology Society.

Dr. Wells has served in leadership roles for the Clinical and Translational Science Institute at Children’s National and the District of Columbia Intellectual and Developmental Disabilities Research Center. She is principal investigator for a 10-year translational research study within the Children’s National partnership with the National Institute of Allergy and Infectious Diseases and was the Children’s National Hospital Medical Staff President from 2020-2022.

Dr. Kenworthy received a B.A. from Yale University and Ph.D. from the University of Maryland. She completed her internship and residency training in clinical psychology/pediatric neuropsychology at Harvard Medical School, Children’s Hospital Boston, Johns Hopkins Medical School and Mount Washington Pediatric Hospital. She has been on the faculty at Children’s National and GW since 1995. She is a national leader in autism research, as well as a distinguished author and speaker.

illustration of how LIFU works

Understanding the use of focused ultrasound in pediatrics

The fundamental principle of focused ultrasound (FUS) is almost analogous to using a magnifying glass to focus beams of sunlight on a single point. Experts at Children’s National Hospital are using FUS as an acoustic lens that uses multiple intersecting beams and targets — specifically deep within the brain — to treat brain tumors in pediatric patients.

Hasan Syed, M.D., co-director of the Focused Ultrasound Program at Children’s National, explains how two FUS methods are currently being used in two different trials — sonodynamic therapy and blood-brain barrier disruption — for the first time in pediatrics.

What is focused ultrasound?

FUS has diverse biological effects that can be categorized as thermal or mechanical: high-intensity focused ultrasound (HIFU) and low-intensity focused ultrasound (LIFU).

The treatments: 5-ALA with sonodynamic therapy and microbubbles for blood-brain barrier disruption

The difference between 5-aminolevulinic acid (5-ALA) medication and microbubbles has to do with the mechanism of treatment.

Dr. Syed explains that 5-ALA is activated by the focused ultrasound. Once activated, the goal is that the drug leads to tumor cell death.

Microbubbles, however, are used specifically to open the blood-brain barrier with focused ultrasound. When that happens, medications — or in our case the chemotherapy agents we’re using in our clinical trial — will hopefully have a better effect on treating the patient and taking care of the tumor.

Children’s National has now treated a series of patients with sonodynamic therapy — or LIFU and 5-ALA. There haven’t been any adverse events — the first time in the world that something like this has happened.

“I think it’s very exciting, and it brings us hope for new treatment options,” Dr. Syed said. Children’s National continues to recruit patients for this trial.

Dr. Donofrio performs an ultrasound

Tracking neurodevelopmental outcomes for kids with congenital heart disease

Extensive research has shown that children with congenital heart disease (CHD) who are born blue or who need cardiac surgery in their first year of life are at risk for developmental challenges and/or learning difficulties.

Mary Donofrio, M.D., co-director of the Cardiac Neurodevelopment Outcome (CANDO) program at Children’s National Hospital, says that we started the program — the only one of its kind in the Washington, D.C. region — to identify and manage delays in development and difficulties with learning, no matter when they arise.

“We start paying attention even before birth and then continue to evaluate neurodevelopment at key stages in a kid’s life to assure the best outcome. Our goal is for every kid born with CHD to be able to achieve their full potential, be active, make friends and succeed in school. Most important, we want each of our patients to grow up to be a happy and successful adult,” says Dr. Donofrio.

Learn more about CANDO at Children’s National Hospital and our role in developing best practices for neurodevelopmental and psychosocial services as part of the international multi-specialty Cardiac Neurodevelopmental Outcome Collaborative.

RNA molecule

New deep learning system helps scientists edit RNA

RNA molecule

The Children’s National team built DeepCas13 on a newer and less studied CRISPR platform, called CRISPR-Cas13d, which instead focuses on RNA.

Children’s National Hospital scientists have created a revolutionary machine-learning system that predicts the effects of changing ribonucleic acid (RNA) molecules using a gene-editing tool built on CRISPR technology.

Called DeepCas13, the system is among the world’s first deep-learning frameworks to recognize the challenges of editing RNA – and then applying data science and machine learning to solve the intricate problems that stem from modifying biological code. Details of the DeepCas13 system were published recently in Nature Communications.

Born from an international collaboration, DeepCas13 could provide the backbone for treatments for diseases based on errors in RNA, including debilitating neurodegenerative diseases such as Huntington’s disease and muscular dystrophy.

“I am an optimistic person, so I expect to have treatments within five to 10 years,” said Wei Li, Ph.D., principal investigator at the Center for Genetic Medicine Research at Children’s National. “Of course, there are going to be lots of obstacles. If we have a very good system, like DeepCas13, with very good performance that can generate treatments, the next problem is how we deliver the system to the right tissue in the patients.”

The big picture

Most research in this space has focused on a version of CRISPR – or Clustered Regularly Interspaced Short Palindromic Repeats – that edits DNA, called CRISPR-Cas9. The Children’s National team built DeepCas13 on a newer and less studied CRISPR platform, called CRISPR-Cas13d, which instead focuses on RNA. In doing so, researchers are opening the door to treating a host of disorders of RNA, given its biological role in coding, decoding, regulating and supporting gene expression.

DeepCas13 combines hundreds of thousands of data points with considerable computing power to help scientists target errant pieces of RNA, while minimizing any off-target changes that could damage the health of cells.

“We only want to target the RNA molecule that is causing diseases, and we don’t want the system to edit normal RNA,” said Xiaolong Cheng, Ph.D., a member of the Li lab and the first author of the study. “With DeepCas13, we can design highly efficient, and highly specific, rules.”

What’s ahead

The FDA has approved one method for delivering RNA treatments to cells, using a virus known as AAV or adeno-associated virus. So far, the gene therapy method has had limited applications. But Li and other researchers see the potential for life-changing treatments in the coming years, built on DeepCas13 and other advances.

The system was developed with partners from around the world, including the University of Illinois Urbana-Champaign and Northeastern University in Shenyang, China. It is open source and available for free to researchers looking for targets to treat RNA-related diseases.

Li says this international partnership is leading the way: “We tested our DeepCas13 model over other methods, and we confirmed that our method has the highest prediction accuracy.”

DeepCas13 was funded by grants from NIH and the Children’s National Research Institute.

newborn in incubator

Neuroprotective effect of Src kinase in neonates affected by HIE

newborn in incubator

Hypoxic-ischemic encephalopathy (HIE) is a major cause of neonatal morbidity and mortality worldwide.

In a systematic review published by Frontiers in Neuroscience, and co-authored by Panagiotis Kratimenos, M.D., neonatologist at Children’s National Hospital, Ioannis Koutroulis, M.D., pediatric emergency medicine physician at Children’s National and Javid Ghaemmaghami, M.S., researcher with the Center for Neuroscience Research at Children’s National, it was concluded that Src kinase is an effective neuroprotective target in the setting of acute hypoxic injury.

The paper reviews hypoxic-ischemic encephalopathy (HIE), a major cause of neonatal morbidity and mortality worldwide (one in four perinatal deaths is attributed to hypoxic-ischemic). While therapeutic hypothermia has improved neurodevelopmental outcomes for some survivors of HIE, this treatment is only available to a subset of affected neonates. Src kinase, an enzyme central to the apoptotic cascade, is a potential pharmacologic target to preserve typical brain development after HIE. This paper, a product of collaboration for a Master’s Thesis with the Aristotle University School of Medicine, Thessaloniki, Greece, where Dr. Kratimenos holds the appointment of Visiting  Professor,  presents evidence of the neuroprotective effects of targeting Src kinase in preclinical models of HIE.

The systematic review shows that while heterogeneity and risk for bias were limiting factors, the overall results indicate that Src-i neuroprotective properties could be a promising therapeutic strategy for neonates after hypoxic events.

Read more about the full review.

glial cells

Future TBI treatments may hinge on understanding a new cell type

glial cells

Only recently have investigators begun to understand how a cell type – the NG2-glia – may respond to injuries, offering clues into the brain’s healing and regeneration.

Traumatic brain injury (TBI) afflicts 69 million people, including 630,000 children, worldwide each year. Yet only recently have investigators begun to understand how a cell type – the NG2-glia – may respond to injuries, offering clues into the brain’s healing and regeneration.

In a new paper published in GLIA, investigators from Children’s National Hospital reviewed 25 years of neuroscience research to lay out what’s known about the molecular response of these NG2-glia cells after TBI. Researchers said they see “a seductive possibility” that tapping into the regenerative potential of NG2-glia cells after neurotrauma could lead to therapies in the future. The impact could be profound, given that TBI is the leading cause of death among all people ages 1-44 and the global cost of this ‘silent epidemic’ is estimated to top $102 billion annually.

What they’re saying

“Our review lays out what’s known about these fascinating cells,” said Terry Dean, M.D., Ph.D., critical care specialist at Children’s National and investigator at the Center for Neuroscience Research (CNR). “NG2-glia are found throughout the brain, and we know that these cells undergo several dynamic changes in the hours, days and weeks after TBI. They are unique, and we want to understand their molecular characteristics to eventually enhance patients’ cellular recovery after TBI.”

Although only encompassing 4% to 8% of brain cells, these NG2-glia cells make up the largest population of regenerative cells in the adult central nervous system. In their article, Dean and Vittorio Gallo, Ph.D., Children’s National Research Institute interim director, lay out a number of unique features of these cells:

  • They proliferate, or multiply, and can form different cell types, especially after brain injuries.
  • They are structurally dynamic and can move and migrate throughout the cortex, including toward injury sites.
  • They appear to play a role in cell-to-cell signaling, which may prove vital after injuries.

The big picture

“As we study the brain after injuries, we hope our work will reveal the role these NG2-glia cells play in recovery, driving us to possible therapies,” Gallo said. “We believe the big answers will come through understanding the brain on a molecular level. This type of deep investigation is the foundation of our bench-to-bedside approach and positions researchers like Dr. Dean to find answers for our patients.”

Moving the field forward

Researchers have only begun to unlock how NG2-glia respond to injury, making this a fruitful area for research. Gallo, Dean and others at CNR hope to build on their knowledge about what happens to the brain immediately after an injury to learn more about what happens months after a debilitating impact. They are also considering new types of research models to expand their knowledge about cellular destruction, immune interaction and blood vessel compromise after different types of brain injuries.

“We look forward to the day when we have a truly targeted therapy for TBI patients,” Dean said. “Imagine the relief this could provide patients suffering from the persistent physical, cognitive and psychological disabilities that often accompany these brain injuries.”

illustration of a brain

Inducing strokes in newborns to treat hemimegalencephaly

“The number one thing people are perplexed by is how well these babies recover and how they can only live with half a brain,” said Tayyba Anwar, M.D., neonatal neurologist and co-director of the Hemimegalencephaly Program at Children’s National Hospital. “People think if a child has half a brain that’s damaged or dysplastic, how are they functioning? But babies are so resilient. It still amazes me.”

The big picture

Children’s National experts have pioneered a novel approach of inducing strokes to stop seizures and improve neurodevelopmental outcomes in newborns under three months old with hemimegalencephaly (HME).

The procedure, called an endovascular embolic hemispherectomy, can be safely used to provide definitive treatment of HME-related epilepsy in neonates and young infants, according to a study in the Journal of NeuroInterventional Surgery.

Prior to this approach, the standard treatment was an anatomic hemispherectomy — surgical removal of the affected half of the brain. But infants had to be at least three months old to undergo such a complex surgery. Delaying surgery meant the persistent seizures compromised the development of the healthy half of the brain.

What they’re saying

In this video, Dr. Anwar and Panagiotis Kratimenos, M.D., Ph.D., neonatologist and co-director of Research in Neonatology at Children’s National, discuss the critically important neonatal care provided to babies who undergo endovascular embolic hemispherectomy and how protocols have evolved with each case to make this less invasive approach a feasible early alternative to surgical hemispherectomy.

Drs. Anwar and Kratimenos are part of the multidisciplinary team of neonatal neurologists, neurointerventional radiologistsneonatologists and neurosurgeons performing endovascular hemispherectomies.

Gender Self-Report seeks to capture the gender spectrum for broad research applications

form with check boxes for genderA new validated self-report tool called the Gender Self-Report provides researchers a way to characterize the gender of research participants beyond their binary designated sex at birth.

The multi-dimensional Gender Self-Report, developed using a community-driven approach and then scientifically validated, is outlined in a peer-reviewed article in the American Psychologist, a journal of the American Psychological Association.

The big picture

“This is the first broadly validated tool that allows us to measure inner gender experience across a large group of people in a rigorous way that doesn’t require a person to understand specialized gender-related terms,” says John Strang, Psy.D., who directs the Gender and Autism Program at Children’s National Hospital. He co-authored the journal article about the measure and co-led the initiative to develop it. “Typical gender assessments are fixed check boxes, which is problematic for capturing gender in people who are not familiar with many of the self-descriptors, which vary in their use and meaning.”

Strang notes that even open-field gender assessments can be problematic for people who experience gender diversity but are not aware of nuanced gender-related language.

Why it matters

This new gender characterization and inclusion method will allow researchers from a broad array of fields (e.g., social sciences, medicine, education) to model their participants’ inner gender experience more equitably in research. The resulting studies will be able to provide deeper understanding of how a person’s gender can play a role in study outcomes.

Senior author and statistical lead for the project, Ji Seung Yang, Ph.D., from University of Maryland Department of Human Development and Quantitative Methodology, foresees this tool as an important addition to the research toolkit for people studying neuroimaging, genetics and any other research that requires a more accurate and detailed picture of an individual’s gender experience.

What’s unique

The Gender Self-Report tool is the first of its kind to be developed and validated by researchers together with the gender diverse and neurodiverse communities directly. These efforts align with work in many fields of clinical research to ensure that study findings reflect the insights and experiences of the people who are being studied, rather than simply capturing the researcher’s external perspective of those participants.

The tool is appropriate for use by youth (as young as 10 years of age) and adults, gender diverse and cisgender individuals, and non-autistic and autistic people. The focus on inclusivity for autistic people is in keeping with the common intersection of autism and gender diversity (i.e., 11% of gender-diverse people are estimated to be autistic).

Gregory Wallace, Ph.D., co-author of the measure and associate professor in the Department of Speech, Language & Hearing Sciences at The George Washington University, calls the tool a “game changer for any research that needs to understand specifics about how gender experience can impact health-related or developmental differences.”

The Gender Self-Report: A Multidimensional Gender Characterization Tool for Gender-Diverse and Cisgender Youth and Adults, appears in the American Psychologist.

Puzzle head illustration

Extended rest might not always be best after a concussion

Puzzle head illustration

An early return to school may be associated with faster concussion recovery.

Contrary to popular belief, rest may not always be the best cure after a concussion, a new study published in JAMA Network Open finds. In fact, an early return to school may be associated with a lower symptom burden after suffering a concussion and, ultimately, faster recovery.

“We know that absence from school can be detrimental to youth in many ways and for many reasons,” says Christopher Vaughan, Psy.D., neuropsychologist at Children’s National Hospital and the study’s lead author. “The results of this study found that, in general, an earlier return to school after a concussion was associated with better outcomes. This helps us feel reassured that returning to some normal activities after a concussion – like going to school – is ultimately beneficial.”

In this cohort study, data from over 1,600 youth aged 5 to 18 were collected across nine pediatric emergency departments in Canada. Because of the large sample size, many factors associated with greater symptom burden and prolonged recovery were first accounted for through the complex statistical approach used to examine the data. The authors found that an early return to school was associated with a lower symptom burden 14 days post-injury in the 8 to 12 and 13 to 18-year-old age groups.

“Clinicians can now confidently inform families that missing at least some school after a concussion is common, often between 2 and 5 days, with older kids typically missing more school,” Dr. Vaughan says. “But the earlier a child can return to school with good symptom management strategies and with appropriate academic supports, the better that we think that their recovery will be.”

The findings suggest that there could be a mechanism of therapeutic benefit to the early return to school. This could be due to:

  • Socialization (or avoiding the deleterious effects of isolation).
  • Reduced stress from not missing too much school.
  • Maintaining or returning to a normal sleep/wake schedule.
  • Returning to light-to-moderate physical activity sooner (also consistent with previous literature).

Children’s National has been a leader in clinical services and research for youth with concussion, most notably through its Safe Concussion Outcome Recovery & Education (SCORE) Program. Given the multitude of other factors that can be expected to influence when a child returns to school after a concussion – including injury severity, specific symptoms, and pre-injury factors – a large sample size and complex statistical analytic approach was required. Future randomized clinical trials and other research can help determine the best timing for a student to return to school after suffering a concussion.

 

Bear Institute PACK logo

Bear Institute Pediatric Accelerator Challenge for Kids winners announced

Bear Institute PACK logoIn December 2022, the Bear Institute, along with Children’s National Hospital and Oracle Health, hosted the second annual Bear Institute PACK (Pediatric Accelerator Challenge for Kids), a start-up competition aimed to foster pediatric digital health innovation.

Bear Institute PACK is inclusive of the entire pediatric health care community and addresses the large disparity in digital health innovation funding dedicated to children versus the rest of the population. “We have to do more for children, a population that can’t advocate for itself,” says Matt Macvey, M.B.A., MS, executive vice president and chief information officer at Children’s National Hospital. “Bear Institute PACK is an all-hands effort to provide increased support to those start-ups trying to bring new solutions to market for kids.”

Start-ups share their innovations and receive valuable feedback from expert judges while competing for a chance to win an on-site pilot and software development support. The competition features three rounds of judging: an initial review of applications from the Bear Institute PACK team, judging from participating pediatric healthcare providers and administrators and review from an expert panel of judges during finalist start-ups’ live pitches. This year’s start-up participants competed across four innovation tracks in the following areas of development: Early-Stage Innovation, Concept Validation, Early Commercialization and Growth Trajectory.

This 2022 winners, in four innovation tracks, are:

  • Early-Stage Innovation (“Even the biggest ideas start small”) Winner: PigPug Health
    Its solution uses neurofeedback, a non-invasive approach to treating brain-related conditions, and artificial intelligence to help children with ADHD and autism become more socialized.
  • Concept Validation (“Now it’s time to test it”) Winner: Global Continence, Inc.
    Its Soluu™, Bedwetting Mitigation Device, helps rapidly and permanently mitigate bedwetting with a neuromodulation process.
  • Early Commercialization (“Countdown to launch”) Winner: PyrAmes Inc.
    Its solution Boppli™ provides continuous, non-invasive blood pressure monitoring and streams data via Bluetooth to a mobile device.
  • Growth Trajectory (“The investment is growing”) Winner: maro
    Its full stack child development kit equips a child’s caretakers (at home, school and clinic) with easy access to tools and data needed to help them navigate tough conversations including mental health, diversity, empathy, and puberty and helps identify mental health at-risk students in schools.

“I was very impressed with this year’s start-up participants and their caliber of talent and passion for what they do. The finalist judges were tasked with selecting one winner in each innovation track, but the work each participant is doing for kids makes them all winners,” says Rebecca Laborde, Ph.D., chief scientist, vice president of Health Innovation and Scientific Advisory, Oracle Health. “Thank you to the entire pediatric healthcare community that comes together to help make this event a success. We believe that by bringing together like-minded individuals with the same goals, we can make a real difference in pediatric healthcare.”

More information on this year’s winners can be found on the Bear Institute PACK website.

Dalia Haydar

Harnessing children’s immune systems to fight their own brain tumors

Dalia Haydar, Pharm.D., Ph.D., principal investigator for the Program for Cell Enhancement and Technologies for Immunotherapies, recently joined Children’s National Hospital to help develop breakthrough treatments that hopefully will be a key in the fight against pediatric brain tumors. She brings her deep experience at St. Jude Children’s Research Hospital to the Center for Cancer and Immunology Research (CCIR) to help support the NexTGen team’s 10-year, $25-million Cancer Grand Challenges award.

Dalia – literally – has drive: She commutes 180 miles round trip from her home in Hershey, Pa., to her lab. She says she is grateful to be at one of the few research institutions in the world that is researching how to harness the power of CAR T-cell therapies to attack solid tumors in kids. While these therapies have been approved to treat leukemia and other blood cancers, solid tumors have proven far more stubborn. Haydar has tremendous hope that she and the team led by CCIR Director Catherine Bollard, M.D., M.B.Ch.B., will change that.

Q: Could you explain the importance of this research?

A: Unfortunately, once a patient is diagnosed with a brain tumor, especially a kid, there’s very little we can do. Using chemotherapy or radiation therapy has big disadvantages because of developmental delays and other side effects. We are hoping this kind of immunotherapy – where we take the patient’s own immune cells and engineer them in the lab to attack their cancer – will eradicate their very harsh and aggressive tumors, without causing significant adverse effects.

Q: How are researchers at Children’s National going to attack solid tumors with a treatment originally designed for blood cancers?

A: We have a lot of resources and expertise at Children’s National that we are trying to put together to develop a therapy that would cure brain tumors. Unfortunately, solid tumors are hard to treat and there are several challenges for any kind of immunotherapy. But right now, being at a place where all the necessary resources, support and expertise are available, we are hoping to address each of these challenges, and we are determined to do something in a meaningful timeframe to push that survival curve toward the advantage of those kids.

Q: How soon can this work be done?

A: Within two or three years, we are hopeful we’ll be able to identify the best working regimen of this CAR T-cell immunotherapy and investigate if it will work in a patient. I foresee, in the next 5 to 10 years, that we’re hopefully going to have such therapy for kids with brain tumors.

Q: What has surprised most you in your work?

A: There are so many challenges in developing immunotherapies for kids with brain tumors. First, if it works for adults, it doesn’t necessarily work for kids. Some of the tumors in kids are more aggressive. We need to understand the tumor itself, besides understanding the immunotherapy we’re developing.

The other challenge is CAR-T immunotherapy is not like a pill or taking radiotherapy that is standardized for several patients. It’s a very expensive therapy. It’s taking the patient’s own immune cell, like a bone marrow transplant. We put it in the lab, re-engineer the cells without transforming them into a cancer cell, enable those immune cells to attack the cancer, and then put them back into the patient. There are a lot of steps you need to take to make sure you don’t artificially harm those cells or introduce contamination.

One of the most intriguing challenges for me is how we make immunotherapy work for kids who have different kinds of brain tumors – a medulloblastoma versus a glioma versus an embryonal tumor. This is one of the challenges that keeps me on my toes, and I’m hoping to answer.

Q: What is the power of being in a multi-center environment like the Children’s National Research Institute?

A: We have to do enough science on the bench to support any proposal for the therapy to move to the clinic. The last thing we want to do is to investigate a drug or therapy in patients without really knowing how it works and the potential adverse effects. Being able to work with researchers at different stages of the bench-to-bedside spectrum, as well as being able to have access to patient samples and innovative preclinical models, helps push the science forward in a shorter time frame.

photo of muscle collagen

New model to treat Becker Muscular Dystrophy

Researchers at Children’s National Hospital have developed a pre-clinical model to test drugs and therapies for Becker Muscular Dystrophy (BMD), a debilitating neuromuscular disease that is growing in numbers and lacks treatment options.

Their work – recently published in the Journal of Cachexia, Sarcopenia and Muscle – provides scientists with a much-needed method to identify, develop and de-risk drugs for patients with BMD.

“The impact of having a model to test pharmaceutical options cannot be overstated,” said Alyson Fiorillo, Ph.D., principal investigator at the Center for Genetic Medicine Research at Children’s National. “We have patients coming up to us at conferences offering muscle biopsies – on the spot – because they are so excited and relieved that treatments can be investigated.”

Caused by mutations in a gene that produces a protein called dystrophin, Becker is part of a collection of disorders known as muscular dystrophies that cause a progressive loss of muscle strength and increasing disability, starting in childhood. The FDA has approved four drugs to help mitigate the impact of the most common and severe subtype, Duchenne Muscular Dystrophy (DMD). In some cases, these drugs convert the Duchenne form of the disease into Becker, which is less severe but still greatly affects quality of life.

As a result, the population of BMD patients is growing, but patients lack treatments for this incredibly impactful disorder. Currently, the FDA has not approved any drugs for BMD. Only two drugs are in clinical trials, compared to 30 trials underway for DMD.

To address this, Children’s National researchers used CRISPR gene editing to create the first preclinical model of X-linked BMD, called the bmx model. This novel advancement will help researchers better understand BMD and eventually create the first drugs for BMD patients.

“Patients with Becker need therapeutic treatments, and we are excited to start working with the model to someday provide options,” said Christopher Heier, Ph.D., principal investigator at the Center for Genetic Medicine Research and co-author of the study. “Most patients with Becker eventually develop cardiomyopathy, and roughly half die from it. This model is the first step on a path to change that and other heartbreaking outcomes from this genetic disorder.”


Abstract Happy 2022 New Year greeting card with light bulb

The best of 2022 from Innovation District

Abstract Happy 2022 New Year greeting card with light bulbA clinical trial testing a new drug to increase growth in children with short stature. The first ever high-intensity focused ultrasound procedure on a pediatric patient with neurofibromatosis. A low dose gene therapy vector that restores the ability of injured muscle fibers to repair. These were among the most popular articles we published on Innovation District in 2022. Read on for our full top 10 list.

1. Vosoritide shows promise for children with certain genetic growth disorders

Preliminary results from a phase II clinical trial at Children’s National Hospital showed that a new drug, vosoritide, can increase growth in children with certain growth disorders. This was the first clinical trial in the world testing vosoritide in children with certain genetic causes of short stature.
(2 min. read)

2. Children’s National uses HIFU to perform first ever non-invasive brain tumor procedure

Children’s National Hospital successfully performed the first ever high-intensity focused ultrasound (HIFU) non-invasive procedure on a pediatric patient with neurofibromatosis. This was the youngest patient to undergo HIFU treatment in the world.
(3 min. read)

3. Gene therapy offers potential long-term treatment for limb-girdle muscular dystrophy 2B

Using a single injection of a low dose gene therapy vector, researchers at Children’s National restored the ability of injured muscle fibers to repair in a way that reduced muscle degeneration and enhanced the functioning of the diseased muscle.
(3 min. read)

4. Catherine Bollard, M.D., M.B.Ch.B., selected to lead global Cancer Grand Challenges team

A world-class team of researchers co-led by Catherine Bollard, M.D., M.B.Ch.B., director of the Center for Cancer and Immunology Research at Children’s National, was selected to receive a $25m Cancer Grand Challenges award to tackle solid tumors in children.
(4 min. read)

5. New telehealth command center redefines hospital care

Children’s National opened a new telehealth command center that uses cutting-edge technology to keep continuous watch over children with critical heart disease. The center offers improved collaborative communication to better help predict and prevent major events, like cardiac arrest.
(2 min. read)

6. Monika Goyal, M.D., recognized as the first endowed chair of Women in Science and Health

Children’s National named Monika Goyal, M.D., M.S.C.E., associate chief of Emergency Medicine, as the first endowed chair of Women in Science and Health (WISH) for her outstanding contributions in biomedical research.
(2 min. read)

7. Brain tumor team performs first ever LIFU procedure on pediatric DIPG patient

A team at Children’s National performed the first treatment with sonodynamic therapy utilizing low intensity focused ultrasound (LIFU) and 5-aminolevulinic acid (5-ALA) medication on a pediatric patient. The treatment was done noninvasively through an intact skull.
(3 min. read)

8. COVID-19’s impact on pregnant women and their babies

In an editorial, Roberta L. DeBiasi, M.D., M.S., provided a comprehensive review of what is known about the harmful effects of SARS-CoV-2 infection in pregnant women themselves, the effects on their newborns, the negative impact on the placenta and what still is unknown amid the rapidly evolving field.
(2 min. read)

9. Staged surgical hybrid strategy changes outcome for baby born with HLHS

Doctors at Children’s National used a staged, hybrid cardiac surgical strategy to care for a patient who was born with hypoplastic left heart syndrome (HLHS) at 28-weeks-old. Hybrid heart procedures blend traditional surgery and a minimally invasive interventional, or catheter-based, procedure.
(4 min. read)

10. 2022: Pediatric colorectal and pelvic reconstructive surgery today

In a review article in Seminars in Pediatric Surgery, Marc Levitt, M.D., chief of the Division of Colorectal and Pelvic Reconstruction at Children’s National, discussed the history of pediatric colorectal and pelvic reconstructive surgery and described the key advances that have improved patients’ lives.
(11 min. read)

Hyperfine Swoop System

$1.6m grant to boost MRI access globally for maternal, child health

Researchers at Children’s National Hospital are investigating ways to bring more portable and accessible low-field magnetic resonance imaging (MRI) to parts of the world that lack access to this critical diagnostic tool, thanks to a grant from the Bill & Melinda Gates Foundation.

The nearly $1.6 million in funding will enable clinicians to better treat pediatric neurological conditions including ischemic brain injury, hydrocephalus, micro- and macrocephaly and more, using analysis tools that are designed to handle the loss in image quality and related challenges inherent to low-field MRI. The research brings together teams at Children’s National and Children’s Hospital Los Angeles — two organizations with extensive experience in designing processing software tools for pediatric brain MRI analysis and data enhancement.

The patient benefit

“For 30 years, MRI has primarily helped patients in high-income countries. Our team is thrilled by the prospect of expanding this powerful tool to patients coming from a wide range of nations, geographies and socioeconomic backgrounds,” said Marius George Linguraru, D.Phil., M.A., M.Sc., principal investigator at the Sheikh Zayed Institute for Pediatric Surgical Innovation (SZI). “Low-field MRI comes with great advantages including portability at the point of care of patients, lower clinical costs and the elimination of sedation for young children.”

Linguraru and his long-time collaborator, Natasha Lepore, Ph.D., principal investigator at The Saban Research Institute at Children’s Hospital Los Angeles, will analyze data from the brains of children from birth for the maternal and child health studies. The MRI data analyzed will form the basis for future studies of children’s brain anatomy in health and disease.

The big picture

Through the new grant, researchers will develop a suite of tools to help clinicians better analyze data and images from low-field MRI systems. These systems already have been integrated into interventional and observational studies to help characterize early neurodevelopmental patterns and identify drivers of abnormal development. They are also evaluating the efficacy of maternal and infant-focused interventions aimed at improving neurodevelopmental outcomes.

Why we’re excited

At Children’s National, SZI has installed a Hyperfine Swoop system, and Linguraru’s team is creating image enhancement tools tailored to the unique challenges of low-field MRI. Chief among them, conventional processing tools developed over the past several decades remain incompatible with the low-field data and require new software to take full advantage of the diagnostic power of imaging.

The work brings together a prestigious international consortium of scientists and clinicians from around the world to harness the power of computing and expand the reach of diagnostic imaging. Lepore said the team is eager to bring modern medical imaging to parts of the world that have missed its many benefits.

“Children’s brain development in underserved areas can be affected by so many factors, like malnutrition or anemia,” Lepore said. “The software we will design for the Hyperfine scanners will improve research into these factors, so the optimal interventions can be designed. We are excited to bring our expertise to this important and timely project.”