Katie Pricola Fehnel, MD

Director, Spinal Cord Tumor Program; Neurosurgeon, Department of Neurosurgery
Assistant Professor, Harvard Medical School
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Katie Pricola Fehnel, MD

Katie Pricola Fehnel, MD

Director, Spinal Cord Tumor Program; Neurosurgeon, Department of Neurosurgery
Assistant Professor, Harvard Medical School
Education
Undergraduate School
Yale University
2004
New Haven
CT
Medical School
Stanford University
2010
Palo Alto
CA
Internship
Massachusetts General Hospital
2011
Boston
MA
Residency
Massachusetts General Hospital
2017
Boston
MA
Fellowship
Boston Children's Hospital
2018
Boston
MA
Media
Caregiver Profile

Meet. Dr. Katie Pricola Fehnel

Expert Q&A

What is a posterior fossa tumor?

Expert Q&A

What is spinal cord surgery and aftercare?

Expert Q&A

How do we diagnose spinal cord tumors?

Certifications
American Board of Neurological Surgery
Professional History

I am an academic neurosurgeon with subspecialty training in pediatric neurosurgery. I devote my time both to clinical practice and academic research. The over-arching goal of my work is to improve pediatric neurosurgical care through translational research with a focus on tumor and cerebrovascular disease. In addition to this I have a general neurosurgical practice in which encompasses a broad spectrum of pediatric disease including congenital malformations of the brain and spine.

My research and training to date highlight my commitment to advancing the field of neurosurgery. I graduated from Yale with a B.A. in political science and a focus on neurovascular research. Interested in understanding the molecular biologic basis for cerebrovascular anomalies, I studied the proteins encoded by the 3 genes known to be mutated in familial cerebral cavernous malformations-Krit1, Malcalvernin, and PDCD10 in the Gunel Lab. As a medical student at Stanford University, I studied vascular injury and repair through stem cell homing and recruitment in the Rabinovitch Lab and was then awarded a one-year Howard Hughes Research Fellowship at the NIH to focus on mesenchymal stem cell biology in the Tuan Lab. As a neurosurgery resident at Massachusetts General Hospital, my clinical interest in vascular injury and dysregulation extended beyond primary vascular pathologies to oncologic processes as well.

As a post-doctoral fellow in the Boston Children’s Vascular Biology Program at Harvard, I began formulating my research questions with a focus on bench to bedside translation. Under the mentorship of both Edward Smith, M.D. and Marsha Moses, PhD., I studied urinary biomarkers and discovered a urinary biomarker fingerprint unique to juvenile pilocytic astrocytomas. This non-invasive test serves as a potential adjunct tool for long-term clinical follow in low grade glioma. Under the same mentorship, I have studied the role of axonal guidance factors in congenital pediatric neurovascular disease and have demonstrated contributions to pathologic vascular endothelial dysfunction. This work has been presented on a national level at both the International Stroke Conference as well as the AANS/CNS Pediatric section meetings.

I completed my clinical pediatric neurosurgical training here at Boston Children’s Hospital as the Shillito fellow where I was mentored by an incredible group of surgeons and clinicians with whom I am thrilled to continue to work. As a faculty neurosurgeon at Boston Children’s Hospital, I am passionate about my patients. I continue to honor my commitment to improve the treatment of neurosurgical disease, both in and outside of the operating room, through translational research.

Approach to Care
There is no greater privilege or responsibility than to care for someone else’s child. This knowledge motivates me to bring the highest level of care to each individual and to improve upon what we can do for our patients.

Publications

The Role of Intraoperative Neurophysiologic Monitoring on Surgical Decision Making and Neurologic Outcomes in Pediatric Patients With Intramedullary Spinal Cord Tumors. View Abstract
Clinical utility of DNA methylation profiling for choroid plexus tumors. View Abstract
The disparity in pediatric spinal cord tumor clinical trials: A scoping review of registered clinical trials from 1989 to 2023. View Abstract
Discovery and Characterization of Ephrin B2 and EphB4 Dysregulation and Novel Mutations in Cerebral Cavernous Malformations: In Vitro and Patient-Derived Evidence of Ephrin-Mediated Endothelial Cell Pathophysiology. View Abstract
H3K27-altered diffuse midline gliomas with MAPK pathway alterations: Prognostic and therapeutic implications. View Abstract
Management of Choroid Plexus Tumors and the Benefit of Preoperative Embolization in Pediatric Patients: Report of 46 Cases from a Single Institution. View Abstract
Mutation of key signaling regulators of cerebrovascular development in vein of Galen malformations. View Abstract
Disease specific urinary biomarkers in the central nervous system. View Abstract
Benefits and limitations of a dual faculty neurosurgeon approach to resection of pediatric craniopharyngioma. View Abstract
Use of intraoperative bone scintigraphy for resection of spinal osteoid osteoma. View Abstract
The evolution of spinal cord surgery: history, people, instruments, and results. View Abstract
Single-institution Series of Hirayama Disease in North America. View Abstract
ALK Amplification and Rearrangements Are Recurrent Targetable Events in Congenital and Adult Glioblastoma. View Abstract
Endoscopic third ventriculostomy with choroid plexus cauterization: predictors of long-term success and comparison with shunt placement for primary treatment of infant hydrocephalus. View Abstract
Genetic dysregulation of an endothelial Ras signaling network in vein of Galen malformations. View Abstract
Intracranial venous malformation masquerading as a meningioma in PI3KCA-related overgrowth spectrum disorder. View Abstract
Predictors of progression in radiation-induced versus nonradiation-induced pediatric meningiomas: a large single-institution surgical experience. View Abstract
Medulloblastoma in the setting of megalencephaly polymicrogyria polydactyly hydrocephalus. View Abstract
Single-institution case series of pituitary biopsy for suspected germinoma in the pediatric population: diagnostic utility, operative risks, and biopsy approaches. View Abstract
Low threshold for intracranial imaging in fever of unknown origin associated with cyanotic heart disease in the pediatric population. View Abstract
Complex Management of Hydrocephalus Secondary To Choroid Plexus Hyperplasia. View Abstract
Mechanisms and therapeutic implications of hypermutation in gliomas. View Abstract
Dysregulation of the EphrinB2-EphB4 ratio in pediatric cerebral arteriovenous malformations is associated with endothelial cell dysfunction in vitro and functions as a novel noninvasive biomarker in patients. View Abstract
Dynamic mapping of the corticospinal tract in open cordotomy and myelomeningocele surgery. View Abstract
Indirect bypass for maternal symptomatic moyamoya in the first trimester of pregnancy: case report. View Abstract
Microsurgical Ligation of Residual Fistulous Arteriovenous Shunt From a Radicular Artery to a Thoracic Arteriovenous Malformation: 2-Dimensional Operative Video. View Abstract
Dynamic Changes in Arteriovenous Malformations (AVMs): Spontaneous Growth and Resolution of AVM-Associated Aneurysms in Two Pediatric Patients. View Abstract
Recovery of Functional Independence After Traumatic Transtentorial Herniation With Duret Hemorrhages. View Abstract
Rare Giant Prevertebral Thoracic Myelomeningocele. View Abstract
Using urinary bFGF and TIMP3 levels to predict the presence of juvenile pilocytic astrocytoma and establish a distinct biomarker signature. View Abstract
Posterior thoracic laminoplasty with dorsal, intradural identification of ventral defect and transdural discectomy for a spontaneous cerebrospinal fluid leak: case report. View Abstract
Columbia softball charity award 195 urinary biomarkers identify pediatric brain tumors noninvasively and correlate with prognostic risk factors. View Abstract
Preconditioning effect on cerebral vasospasm in patients with aneurysmal subarachnoid hemorrhage. View Abstract
Whole brain radiation therapy (WBRT) alone versus WBRT and radiosurgery for the treatment of brain metastases. View Abstract
Successful repair of a gunshot wound to the head with retained bullet in the torcular herophili. View Abstract
Langerhans cell histiocytosis in a 5-month-old presenting with biparietal masses. View Abstract
Whole brain radiation therapy (WBRT) alone versus WBRT and radiosurgery for the treatment of brain metastases. View Abstract
Stealth surgery: subcutaneous endoscopic excision of benign lesions of the trunk and lower extremity. View Abstract
Interleukin-6 maintains bone marrow-derived mesenchymal stem cell stemness by an ERK1/2-dependent mechanism. View Abstract
PDCD10, the gene mutated in cerebral cavernous malformation 3, is expressed in the neurovascular unit. View Abstract
Reactivation of gammaHV68 induces neointimal lesions in pulmonary arteries of S100A4/Mts1-overexpressing mice in association with degradation of elastin. View Abstract
CCM2 expression parallels that of CCM1. View Abstract
Mutations in apoptosis-related gene, PDCD10, cause cerebral cavernous malformation 3. View Abstract
Cerebral venous malformations have distinct genetic origin from cerebral cavernous malformations. View Abstract