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Lionel Chow, MD, PhD


astrocytoma, brain and spinal cord tumors, ependymoma, glioma, medulloblastoma, spinal tumors, brain tumors


Dr. Lionel Chow is a pediatric hematologist and oncologist with an expertise in childhood brain cancer. He works with a multidisciplinary team of experts to provide patients and families with the best care and treatment available for brain tumors that also meets the unique medical and psychological needs of each patient. He is a cancer researcher whose work has focused on finding better treatments for aggressive brain tumors in children and adults. He has published over 40 research papers in internationally recognized journals and presented his research at international conferences.

Dr. Chow received his medical training and research doctorate at McGill University in Montreal, Canada. He completed his pediatric residency and hematology/oncology training at The Hospital for Sick Children in Toronto, Canada where he was a chief fellow. He then moved to St. Jude Children’s Research Hospital in Memphis, Tennessee where he developed an interest in brain tumor research in the lab. He also completed clinical training in pediatric neuro-oncology at St. Jude. He moved to Cincinnati Children’s Hospital Medical Center where he established his own brain tumor laboratory and was a member of the brain tumor program. Dr. Chow joined the hematology/oncology program at Dayton Children’s hospital in 2018 and provides a team-based family-centered approach to the care of brain tumor patients. He is also continuing his research on childhood brain tumors with a goal of developing better treatment options for patients with aggressive forms of this disease.

Dr. Chow serves as the chair of the Medical Advisory Committee for Joshua’s Wish, a private foundation that raises money to support families and research on diffuse intrinsic pontine glioma. He also speaks at several fundraising events in southwestern Ohio. He was awarded a Jean François St-Denis Fellowship in Cancer Research by the Canadian Institutes of Health Research (2005) and was named a St. Baldrick’s Foundation Scholar (2011) as well as a Distinguished Scientist by the Sontag Foundation (2011).


Get to know more about Dr. Chow, like how he grew up wanting to be a researcher and carries that passion with him as a physician, and his expertise as a barbecuer!

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Diagnosed brain tumor

education and training

  • medical school: McGill University, Canada
  • residency: The Hospital for Sick Children, Toronto - Pediatrics
  • fellowship: 
    • The Hospital for Sick Children, Toronto - pediatric hematology and oncology
    • St. Jude Children's Research Hospital, Memphis - pediatric neuro-oncology
  • board certification: pediatric hematology/oncology, general pediatrics

publications and presentations

  • Chow, L.M.L., M.J.H. Ratcliffe and A. Veillette. (1992) tkl is the avian homolog of the mammalian lck tyrosine protein kinase gene. Mol. Cell. Biol. 12:1226-1233. PMID: 1545804; PMCID: PMC369554
  • Davidson, D., L.M.L. Chow, M. Fournel and A. Veillette. (1992) Differential regulation of T cell antigen responsiveness by isoforms of the src-related tyrosine protein kinase p59fyn. J. Exp. Med. 175:1483-1492. PMID: 1375262; PMCID: PMC2119231.
  • Chow, L.M.L., M. Fournel, D. Davidson and A. Veillette. (1993) Negative regulation of T-cell receptor signalling by tyrosine protein kinase p50csk. Nature 365:156-160. PMID: 8371758.
  • Gervais, F.G., L.M.L. Chow, J.M. Lee, P.E. Branton and A. Veillette. (1993) The SH2 domain is required for stable phosphorylation of p56lck at tyrosine 505, the negative regulatory site. Mol. Cell. Biol. 13:7112-7121. PubMed PMID: 8413300; PMCID: PMC364772.
  • Chow, L.M.L., C. Jarvis, Q. Hu, S.H. Nye, F.G. Gervais, A. Veillette and L.A. Matis. (1994) Ntk: A Csk-related protein-tyrosine kinase expressed in brain and T lymphocytes. Proc. Natl. Acad. Sci. U.S.A. 91:4975-4979. PubMed PMID: 8197166; PMCID: PMC43912.
  • Chow, L.M.L., D. Davidson, M. Fournel, P. Gosselin, S. Lemieux, M.S. Lyu, C.A. Kozak, L.A. Matis and A. Veillette. (1994) Two distinct protein isoforms are encoded by ntk, a csk-related tyrosine protein kinase gene. Oncogene 9:3437-3448. PMID: 7970703.
  • Chow, L.M.L., and A. Veillette. (1995) The Src and Csk families of tyrosine protein kinases in hemopoietic cells. Semin. Immunol. 7:207-226. PMID: 8520026.
  • Cloutier, J.-F., L.M.L. Chow and A. Veillette. (1995) Requirement of the SH3 and SH2 domains for the inhibitory function of tyrosine protein kinase p50csk in T-lymphocytes. Mol. Cell. Biol. 15:5937-5944. PMID: 7565746; PMCID: PMC230845.
  • Latour, S., L.M.L. Chow and A. Veillette. (1996) Differential intrinsic activity of Syk and Zap-70 protein-tyrosine kinases. J. Biol. Chem. 271:22782-22790. PMID: 8798454.
  • Davidson, D., L.M.L. Chow and A. Veillette. (1997) Chk, a Csk family tyrosine protein kinase, exhibits Csk-like activity in fibroblasts, but not in an antigen-specific T-cell line. J. Biol. Chem. 272:1355-1362. PMID: 8995444.
  • Treacy, E.P., B.R. Akerman, L.M.L. Chow, R. Youil, C. Bibeau, J. Lin, A.G. Bruce, M. Knight, D.M. Danks, J.R. Cashman and S.M. Forrest. (1998) Mutations of the flavin-containing monooxygenase gene (FMO3) cause trimethyaminuria, a defect in detoxification. Hum. Mol. Genet. 7:839-845. PMID: 9536088
  • Akerman, B.R., S.M. Forrest, L.M.L. Chow, R. Youil, M. Knight and E.P. Treacy. (1999) Two novel mutations of the FMO3 gene in a proband with trimethylaminuria. Hum. Mutat. 13:376-379. PMID: 10338091
  • Akerman, B.R., H. Lemass, L.M.L. Chow, D.M. Lambert, C. Greenberg, C. Bibeau, O.A. Mamer and E.P. Treacy. (1999) Trimethyaminuria is caused by mutations of the FMO3 gene in a North American cohort. Mol. Genet. Metab. 68:24-31. PMID: 10479479
  • Chow, L.M.L., J.N. Friedman, C. MacArthur, R. Restrepo, M. Temple, P.G. Chait and B. Connolly. (2003) Peripherally inserted central catheter (PICC) fracture and embolization in the pediatric population. J. Pediatr. 142:141-144. PMID: 12584534
  • Chow, L.M.L., M. Capra, Z. Levichek, G. Koren and R.M. Grant. (2004) Toxic ingestion of 6-mercaptopurine by young siblings of pediatric oncology patients. J. Pediatr. 144:669-671. PMID: 15127011
  • Chow, L.M.L. and S.J. Baker. (2006) PTEN function in normal and neoplastic growth. Cancer Lett. 241:184-196. PMID: 16412571
  • Chow, L.M.L., Y. Tian, T. Weber, M. Corbett, J. Zuo and S.J. Baker. (2006) Inducible Cre recombinase activity in mouse cerebellar granule cell precursors and inner ear hair cells. Dev. Dyn. 235:2991-2998. PMID: 16958097.
  • Chow, L.M.L., P.C. Nathan, D.C. Hodgson, D. Jenkin, S. Weitzman, R.M. Grant, D. Manson, A. Bross, J.J. Doyle, C. Danjoux and M. Greenberg. (2006) Survival and late effects in children with Hodgkin’s lymphoma treated with MOPP/ABV and low-dose, extended-field irradiation. J. Clin. Oncol. 24:5735-5741. PMID: 17179107
  • Weber, T., M.K. Corbett, L.M.L. Chow, M.B. Valentine, S.J. Baker and J. Zuo. (2008) Rapid cell-cycle reentry and cell death after acute inactivation of the retinoblastoma gene product in postnatal cochlear hair cells. Proc. Natl. Acad. Sci. U.S.A. (2008) Jan 15;105(2):781-5. PMID: 18178626; PMCID: PMC2206613
  • Chow, L.M.L., J. Zhang and S.J. Baker. (2008) Inducible Cre recombinase activity in mouse mature astrocytes and adult neural precursor cells. Transgenic Res. 17:919-928. PMID: 18483774; PMCID: PMC2522290.
  • Cicero, S.A., D. Johnson, S. Reyntjens, S. Frase, S. Connell, L.M.L. Chow, S.J. Baker, B.P. Sorrentino and M.A. Dyer (2009) Cells previously identified as retinal stem cells are pigmented ciliary epithelial cells. Proc. Natl. Acad. Sci. U.S.A. 106:6685-6690. PMID: 19346468; PMCID: PMC2672506.
  • Lavado, A., O. Lagutin, L.M.L. Chow, S.J. Baker and G. Oliver. (2010) Prox1 is required for granule cell maturation and intermediate progenitor maintenance during brain neurogenesis. PLoS Biol. 8:e1000460. PMID: 20808958; PMCID: PMC2923090
  • Chow, L.M.L., R. Endersby, X. Zhu, S. Rankin, C. Qu, J. Zhang, A. Broniscer, D.W. Ellison and S. J. Baker. (2011) Cooperativity within and among Pten, p53 and Rb pathways induces high-grade astrocytoma in adult brain. Cancer Cell 19:305-316. PMID: 21397855; PMCID: PMC3060664
  • Dorris, K., M. Fouladi, S.M. Davies, J. Perentesis, J.M. Lawrence, L.M.L. Chow, A. Assa’ad, B. Uygungil and S. Jodele. (2011) Severe delayed-type allergic reaction to thiol-based chemoprotective agents mesna and amifostine in a child with a supratentorial primitive neuroectodermal tumor. J. Pediatr. Hematol. Oncol. 33:e250-252. PMID: 21646919
  • Elmeliegy, M.A., A.M. Carcaboso, L.M.L. Chow, Z.M. Zhang, C. Calabrese, S.L. Throm, F. Wang, S.J. Baker and C.F. Stewart. (2011) Magnetic resonance imaging (MRI)-guided microdialysis cannula implantation in a spontaneous high-grade glioma murine model. J. Pharm. Sci. 100:4210-4214. PMID: 21837651; PMCID: PMC3750095
  • Chow, L.M.L. and S.J. Baker. (2012) Capturing the molecular and biological diversity of high-grade astrocytoma in genetically engineered mouse models. Oncotarget 3:67-77. PMID: 22287481; PMCID: PMC3292893
  • Zhu, G., L.M.L. Chow, I.T. Bayazitov, Y. Tong, R.J. Gilbertson, S.S. Zakharenko, D.J. Solecki and S.J. Baker. (2012) Pten deletion causes mTorc1-dependent ectopic neuroblast differentiation without causing uniform migration defects. Development 139:3422-3431. PMID: 22874917; PMCID: PMC3424045
  • Hummel, T.R., L.M.L. Chow, M. Fouladi and D. Franz. (2013) Pharmacotherapeutic management of pediatric astrocytomas: current and upcoming strategies. Pediatric Drugs 15:29-42. PMID: 23329387
  • Joshi, K., Y. Banasavadi-Siddegowda, X. Mo, S.H. Kim, P. Mao, C. Kig, D. Nardini, R.W. Sobol, L.M.L. Chow, H.I. Kornblum, R. Waclaw, M. Beullens and I. Nakano. (2013) MELK-dependent FOXM1 phosphorylation is essential for proliferation of glioma stem cells. Stem Cells 31:1051-1063. PMID: 23404835; PMCID: PMC3744761.
  • Zhong, Y., Y.-W. Wan, K. Pang, L.M.L. Chow and Z. Liu. (2013) Digital sorting of complex tissues for cell type-specific gene expression profiles. BMC Bioinformatics 14:89. PMID: 23497278; PMCID: PMC3626856.
  • Rafalski, V.A., P.P. Ho, J.O. Brett, D. Ucar, J.C. Dugas, E.A. Pollina, L.M.L. Chow, A. Ibrahim, S.J. Baker, B.A. Barres, L. Steinman and A. Brunet. (2013) Expansion of oligodendrocyte progenitor cells upon SIRT1 inactivation in the adult brain. Nature Cell Biol. 15:614-624. PMID: 23644469; PMCID: PMC4026158
  • Wojton, J., Z. Chu, H. Mathsyaraja, W.H. Meisen, N. Denton, C.-H. Kwon, L.M.L. Chow, M. Palascak, R. Franco, T. Bourdeau, S. Thornton, M.C. Ostrowski, B. Kaur and X. Qi. (2013) Systemic delivery of SapC-DOPS has antiangiogenic and antitumor effects against glioblastoma. Mol. Ther. 21:1517-1525. PMID: 23732993; PMCID: PMC3734660.
  • Liu, X., R.R. Chhipa, S. Pooya, M. Wortman, S. Yachyshin, L.M.L. Chow, A. Kumar, X. Zhou, Y. Sun, B. Quinn, C. McPherson, R.E. Warnick, A. Kendler, S. Giri, J. Poels, K. Norga, B. Viollet, G.A. Grabowski and B Dasgupta. (2014) Discrete mechanism of mTOR and cell cycle regulation by AMPK agonists independent of AMPK. Proc. Natl. Acad. Sci. U.S.A. 111:E435-444. PMID: 24474794; PMCID: PMC3910576
  • Salloum, R., M. DeWire, A. Lane, S. Goldman, T. Hummel, L. Chow, L. Miles, M. Sutton, C. Stevenson, M. Fouladi and J. Leach. (2015) Patterns of progression in pediatric patients with high-grade glioma or diffuse intrinsic pontine glioma treated with bevacizumab-based therapy at diagnosis. J. Neurooncol. 121:591-598. PMID: 25433556
  • Gass, D., M. DeWire, L. Chow, S.R. Rose, S. Lawson, C. Stevenson, A.L. Pai, B. Jones, M. Sutton, A. Lane, D. Pruitt, M. Fouladi and T.R. Hummel. (2015) Pediatric tectal plate gliomas: a review of clinical outcomes, endocrinopathies, and neuropsychological sequelae. J. Neurooncol. 122:169-177. PMID: 25582835.
  • Dave, N., L.M.L. Chow, G.A. Gudelsky, K. LaSance, X. Qi and P.B. Desai. (2015) Pre-clinical pharmacological evaluation of letrozole as a novel treatment for gliomas. Mol. Cancer Ther. 14:857-864. PMID: 25695958; PMCID: PMC4631403
  • Hummel, T.R., R. Salloum, R. Drissi, S. Kumar, M. Sobo, S. Goldman, A. Pai, J. Leach, A. Lane, D. Pruitt, M. Sutton, L.M.L. Chow, L. Grimme, R. Doughman, L. Backus, L. Miles, C. Stevenson, M. Fouladi and M. DeWire. (2015) A pilot study of bevacizumab-based therapy in patients with newly diagnosed high-grade gliomas and diffuse intrinsic pontine gliomas. J. Neurooncol. 127:53-61. PMID: 26626490
  • Hoffman, L.M., M. DeWire, S. Ryall, P. Buczkowicz, J. Leach, L. Miles, A. Ramani, M. Brudno, S.S. Kumar, R. Drissi, P. Dexheimer, R. Salloum, L. Chow, T. Hummel, C. Stevenson, Q.R. Lu, B. Jones, D. Witte, B. Aronow, C.E. Hawkins and M. Fouladi. (2016) Spatial genomic heterogeneity in diffuse intrinsic pontine and midline high-grade glioma: implications for diagnostic biopsy and targeted therapeutics. Acta Neuropathol. Commun. 4:1. PMID: 26727948; PMCID: PMC4700584
  • Steed, T.C., J.M. Treiber, K. Patel, V. Ramakrishnan, A. Merk, A.R. Smith, B.S. Carter, A.M. Dale, L.M.L. Chow and C.C. Chen. (2016) Differential localization of glioblastoma subtype: implications on glioblastoma pathogenesis. Oncotarget 7:24899-24907. PMID: 27056901; PMCID: PMC5041878
  • Zhu, G., S.L. Rankin, J.D. Larson, X. Zhu, L.M.L. Chow, C. Qu, J. Zhang, D.W. Ellison and S.J. Baker. (2017) PTEN signaling in the postnatal perivascular progenitor niche drives medulloblastoma formation. Cancer Res. 77:123-133. PMID: 27815386; PMCID: PMC5214974
  • Anderson, J., R. Muraleedharan, N. Oatman, A. Klotter, S. Sengupta, R.R. Waclaw, J. Wu, R. Drissi, L. Miles, E.H. Raabe, M. Weirauch, M. Fouladi, L.M.L. Chow, L. Hoffman, M. DeWire and B. Dasgupta. (2017) The transcription factor Olig2 is important for the biology of diffuse intrinsic pontine gliomas. Neuro-Oncol. 19:1068-1078. PMID: 28339768; PMCID: PMC5570182
  • Salloum, R., M.K. McConechy, L.G. Mikael, C. Fuller, R. Drissi, M. DeWire, H. Nikbakht, N. De Jay, X. Yang, D. Boue, L.M.L. Chow, J.L. Finlay, T. Gayden, J. Karamchandani, T.R. Hummel, R. Olshefski, D.S. Osorio, C. Stevenson, C.L. Kleinman, J. Majewski, M. Fouladi and N. Jabado. (2017) Characterizing temporal genomic heterogeneity in pediatric high-grade gliomas. Acta Neuropathol. Commun. 5:78. PMID: 29084603; PMCID: PMC5663045
  • Sengupta, S., M. Sobo, K. Lee, S.S. Kumar, A.R. White, I. Mender, C. Fuller, L.M.L. Chow, M. Fouladi, J.W. Shay and R. Drissi. (2018) Induced telomere damage to treat telomerase expressing therapy-resistant pediatric brain tumors. Mol. Cancer Ther. 17:1504-1514. PMID: 29654065
  • Chadwick, M.L., A. Lane, D. Thomas, A.R. Smith, A.R. White, D. Davidson, Y. Feng, E. Boscolo, Y. Zheng, D.M. Adams, A. Gupta, A. Veillette and L.M.L. Chow. (2018) Combined mTOR and MEK inhibition is an effective therapy in a novel mouse model for angiosarcoma. Oncotarget 9:24750-24765. PMID: 29872503; PMCID: PMC5973867
  • Chhipa, R.R., Q. Fan, J. Anderson, R. Muraleedharan, Y. Huang, G. Ciraolo, X. Chen, R. Waclaw, L.M.L. Chow, Z. Khuchua, M. Kofron, M.T. Weirauch, A. Kendler, C. McPherson, N. Ratner, I. Nakano, N. Dasgupta, K. Komurov and B. Dasgupta. (2018) AMP kinase promotes glioblastoma bioenergetics and tumor growth. Nature Cell Biol. 20:823-835. PMID: 29915361

awards, honors and organizations

  • Dayton Magazine - Dayton Best Docs 2023
  • Fellow of the Royal College of Physicians of Canada


  • American Association for the Advancement of Science
  • American Association of Cancer Research
  • American Society of Clinical Oncology
  • Society for Neuro-Oncology
  • Children's Oncology Group

get to know me

I chose my specialty because...

I chose pediatric hematology and oncology because cancer and blood diseases are the number one cause of non-accidental death in children in the United States. My focus is ensuring children with these diseases get the best treatment possible. I am also dedicated to finding new and better treatments and cures for childhood brain cancer.

I like working with kids because...

they are full of wonder, they are resilient and they are inspiring.

I chose to work at Dayton Children's because...

the hospital is going through exciting changes and growth that will make this an even better place for children to receive their care.

Dayton Children's is special because...

it is a hospital that has the expertise and facilities of a large pediatric center while maintaining the familiarity and personal attention of smaller hospitals.

ratings and reviews

Question Rating Breakdown

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star star star star star

This provider is very thorough and helpful, and he makes sure that my daughter has everything that she needs to be in good health. And he follows up to make sure that she has what she needs as well.

star star star star star

The nurses in this department have a good understanding of my daughter's underlying hEDS condition. They are super supportive and friendly, and listen and respond to our concerns. Their sterile technique accessing ports is flawless! Dr Chow might struggle to understand my daughter's co-morbid condition, but he is obviously working hard to figure it out. He has shared with us research he's done on his own, and he is very responsive to working with the immunologist to figure it out. He takes das much time as needed answering questions. Dr Chow is one of my daughter's favorite doctors, and that says a lot given her medical history.

star star star star star

Excellent staff!

star star star star star

Very nice and professional, the whole care team. Dr Chow took time to explain and examine. Thank you!

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