Julio Rojas-Martinez, MD, PhD

Assistant Professor
Fields of Interest: 

Julio Rojas is a neurologist who specializes in dementia, caring for patients with cognitive difficulties or behavioral changes resulting from conditions including Alzheimer’s disease, Lewy body dementia (a form of dementia that causes cognitive defects and Parkinson’s-like symptoms), frontotemporal dementia (a common cause of dementia in younger adults that features behavioral changes) and progressive supranuclear palsy (a condition affecting movement and behavior in older adults). With particular expertise in managing difficult behaviors in dementia, he creates care plans to equip patients and their families with the necessary tools for achieving their best possible quality of life. In his research, Rojas looks for blood tests that could be used to diagnose dementia. He also works on developing novel treatments to prevent or slow neurological degeneration and cognitive impairment.

Rojas earned his medical degree at the Tecnológico de Monterrey in Mexico. He earned a doctorate in neuroscience from the University of Texas at Austin and completed a residency in neurology at the University of Texas Southwestern Medical Center and a fellowship in behavioral neurology at UCSF. A native of Mexico City, Rojas conducts patient evaluations in English and Spanish. He strives to improve access to dementia care for Hispanic communities in the United States. For the UCSF Memory and Aging Center, he co-chairs a task force that works to improve the management of behavioral symptoms for the center's patients with dementia. He also participates in UCSF committees on ethics and on diversity and inclusion.

Publications: 

Plasma neurofilament light chain levels suggest neuroaxonal stability following therapeutic remyelination in people with multiple sclerosis.

Journal of neurology, neurosurgery, and psychiatry

Abdelhak A, Cordano C, Boscardin WJ, Caverzasi E, Kuhle J, Chan B, Gelfand JM, Yiu HH, Oertel FC, Beaudry-Richard A, Condor Montes S, Oksenberg JR, Lario Lago A, Boxer A, Rojas-Martinez JC, Elahi FM, Chan JR, Green AJ

Sensitivity of the Social Behavior Observer Checklist to Early Symptoms of Patients With Frontotemporal Dementia.

Neurology

Toller G, Cobigo Y, Ljubenkov PA, Appleby BS, Dickerson BC, Domoto-Reilly K, Fong JC, Forsberg LK, Gavrilova RH, Ghoshal N, Heuer HW, Knopman DS, Kornak J, Lapid MI, Litvan I, Lucente DE, Mckenzie IR, McGinnis SM, Miller BL, Pedraza O, Rojas JC, Staffaroni AM, Wong B, Wszolek ZK, Boeve BF, Boxer AL, Rosen HJ, Rankin KP, ALLFTD research consortium

Plasma P-tau181 and P-tau217 in Patients With Traumatic Encephalopathy Syndrome With and Without Evidence of Alzheimer Disease Pathology.

Neurology

Asken BM, Tanner JA, VandeVrede L, Mantyh WG, Casaletto KB, Staffaroni AM, La Joie R, Iaccarino L, Soleimani-Meigooni D, Rojas JC, Gardner RC, Miller BL, Grinberg LT, Boxer AL, Kramer JH, Rabinovici GD

Comprehensive cross-sectional and longitudinal analyses of plasma neurofilament light across FTD spectrum disorders.

Cell reports. Medicine

Gendron TF, Heckman MG, White LJ, Veire AM, Pedraza O, Burch AR, Bozoki AC, Dickerson BC, Domoto-Reilly K, Foroud T, Forsberg LK, Galasko DR, Ghoshal N, Graff-Radford NR, Grossman M, Heuer HW, Huey ED, Hsiung GR, Irwin DJ, Kaufer DI, Leger GC, Litvan I, Masdeu JC, Mendez MF, Onyike CU, Pascual B, Ritter A, Roberson ED, Rojas JC, Tartaglia MC, Wszolek ZK, Rosen H, Boeve BF, Boxer AL, ALLFTD consortium, Petrucelli L

Diagnostic Accuracy of Magnetic Resonance Imaging Measures of Brain Atrophy Across the Spectrum of Progressive Supranuclear Palsy and Corticobasal Degeneration.

JAMA network open

Illán-Gala I, Nigro S, VandeVrede L, Falgàs N, Heuer HW, Painous C, Compta Y, Martí MJ, Montal V, Pagonabarraga J, Kulisevsky J, Lleó A, Fortea J, Logroscino G, Quattrone A, Quattrone A, Perry DC, Gorno-Tempini ML, Rosen HJ, Grinberg LT, Spina S, La Joie R, Rabinovici GD, Miller BL, Rojas JC, Seeley WW, Boxer AL

Effect of the Histone Deacetylase Inhibitor FRM-0334 on Progranulin Levels in Patients With Progranulin Gene Haploinsufficiency: A Randomized Clinical Trial.

JAMA network open

Ljubenkov PA, Edwards L, Iaccarino L, La Joie R, Rojas JC, Koestler M, Harris B, Boeve BF, Borroni B, van Swieten JC, Grossman M, Pasquier F, Frisoni GB, Mummery CJ, Vandenberghe R, Le Ber I, Hannequin D, McGinnis SM, Auriacombe S, Onofrj M, Goodman IJ, Riordan HJ, Wisniewski G, Hesterman J, Marek K, Haynes BA, Patzke H, Koenig G, Hilt D, Moebius H, Boxer AL

Plasma phosphorylated tau 217 and phosphorylated tau 181 as biomarkers in Alzheimer's disease and frontotemporal lobar degeneration: a retrospective diagnostic performance study.

The Lancet. Neurology

Thijssen EH, La Joie R, Strom A, Fonseca C, Iaccarino L, Wolf A, Spina S, Allen IE, Cobigo Y, Heuer H, VandeVrede L, Proctor NK, Lago AL, Baker S, Sivasankaran R, Kieloch A, Kinhikar A, Yu L, Valentin MA, Jeromin A, Zetterberg H, Hansson O, Mattsson-Carlgren N, Graham D, Blennow K, Kramer JH, Grinberg LT, Seeley WW, Rosen H, Boeve BF, Miller BL, Teunissen CE, Rabinovici GD, Rojas JC, Dage JL, Boxer AL, Advancing Research and Treatment for Frontotemporal Lobar Degeneration investigators

Lower White Matter Volume and Worse Executive Functioning Reflected in Higher Levels of Plasma GFAP among Older Adults with and Without Cognitive Impairment.

Journal of the International Neuropsychological Society : JINS

Asken BM, VandeVrede L, Rojas JC, Fonseca C, Staffaroni AM, Elahi FM, Lindbergh CA, Apple AC, You M, Weiner-Light S, Brathaban N, Fernandes N, Boxer AL, Miller BL, Rosen HJ, Kramer JH, Casaletto KB

Selective vulnerability to atrophy in sporadic Creutzfeldt-Jakob disease.

Annals of clinical and translational neurology

Younes K, Rojas JC, Wolf A, Sheng-Yang GM, Paoletti M, Toller G, Caverzasi E, Luisa Mandelli M, Illán-Gala I, Kramer JH, Cobigo Y, Miller BL, Rosen HJ, Geschwind MD

Plasma Neurofilament Light for Prediction of Disease Progression in Familial Frontotemporal Lobar Degeneration.

Neurology

Rojas JC, Wang P, Staffaroni AM, Heller C, Cobigo Y, Wolf A, Goh SM, Ljubenkov PA, Heuer HW, Fong JC, Taylor JB, Veras E, Song L, Jeromin A, Hanlon D, Yu L, Khinikar A, Sivasankaran R, Kieloch A, Valentin MA, Karydas AM, Mitic LL, Pearlman R, Kornak J, Kramer JH, Miller BL, Kantarci K, Knopman DS, Graff-Radford N, Petrucelli L, Rademakers R, Irwin DJ, Grossman M, Ramos EM, Coppola G, Mendez MF, Bordelon Y, Dickerson BC, Ghoshal N, Huey ED, Mackenzie IR, Appleby BS, Domoto-Reilly K, Hsiung GR, Toga AW, Weintraub S, Kaufer DI, Kerwin D, Litvan I, Onyike CU, Pantelyat A, Roberson ED, Tartaglia MC, Foroud T, Chen W, Czerkowicz J, Graham DL, van Swieten JC, Borroni B, Sanchez-Valle R, Moreno F, Laforce R, Graff C, Synofzik M, Galimberti D, Rowe JB, Masellis M, Finger E, Vandenberghe R, de Mendonça A, Tagliavini F, Santana I, Ducharme S, Butler CR, Gerhard A, Levin J, Danek A, Otto M, Sorbi S, Cash DM, Convery RS, Bocchetta M, Foiani M, Caroline V G, Peakman G, Russell L, Swift I, Todd E, Rohrer JD, Boeve BF, Rosen HJ, Boxer AL

Plasma Glial Fibrillary Acidic Protein Levels Differ Along the Spectra of Amyloid Burden and Clinical Disease Stage.

Journal of Alzheimer's disease : JAD

Asken BM, Elahi FM, La Joie R, Strom A, Staffaroni AM, Lindbergh CA, Apple AC, You M, Weiner-Light S, Brathaban N, Fernandes N, Karydas A, Wang P, Rojas JC, Boxer AL, Miller BL, Rabinovici GD, Kramer JH, Casaletto KB

Plasma tau and neurofilament light in frontotemporal lobar degeneration and Alzheimer's disease.

Neurology

Illán-Gala I, Lleo A, Karydas A, Staffaroni AM, Zetterberg H, Sivasankaran R, Grinberg LT, Spina S, Kramer J, Ramos EM, Coppola G, La Joie R, Rabinovici GD, Perry DC, Gorno-Tempini ML, Seeley W, Miller BL, Rosen HJ, Blennow K, Boxer AL, Rojas JC

Four-Repeat Tauopathies: Current Management and Future Treatments.

Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics

VandeVrede L, Ljubenkov PA, Rojas JC, Welch AE, Boxer AL

Open-Label Phase 1 Futility Studies of Salsalate and Young Plasma in Progressive Supranuclear Palsy.

Movement disorders clinical practice

VandeVrede L, Dale ML, Fields S, Frank M, Hare E, Heuer HW, Keith K, Koestler M, Ljubenkov PA, McDermott D, Ohanesian N, Richards J, Rojas JC, Thijssen EH, Walsh C, Wang P, Wolf A, Quinn JF, Tsai R, Boxer AL

Diagnostic value of plasma phosphorylated tau181 in Alzheimer's disease and frontotemporal lobar degeneration.

Nature medicine

Thijssen EH, La Joie R, Wolf A, Strom A, Wang P, Iaccarino L, Bourakova V, Cobigo Y, Heuer H, Spina S, VandeVrede L, Chai X, Proctor NK, Airey DC, Shcherbinin S, Duggan Evans C, Sims JR, Zetterberg H, Blennow K, Karydas AM, Teunissen CE, Kramer JH, Grinberg LT, Seeley WW, Rosen H, Boeve BF, Miller BL, Rabinovici GD, Dage JL, Rojas JC, Boxer AL

Reactions to Multiple Ascending Doses of the Microtubule Stabilizer TPI-287 in Patients With Alzheimer Disease, Progressive Supranuclear Palsy, and Corticobasal Syndrome: A Randomized Clinical Trial.

JAMA neurology

Tsai RM, Miller Z, Koestler M, Rojas JC, Ljubenkov PA, Rosen HJ, Rabinovici GD, Fagan AM, Cobigo Y, Brown JA, Jung JI, Hare E, Geldmacher DS, Natelson-Love M, McKinley EC, Luong PN, Chuu EL, Powers R, Mumford P, Wolf A, Wang P, Shamloo M, Miller BL, Roberson ED, Boxer AL

Promoting tau secretion and propagation by hyperactive p300/CBP via autophagy-lysosomal pathway in tauopathy.

Molecular neurodegeneration

Chen X, Li Y, Wang C, Tang Y, Mok SA, Tsai RM, Rojas JC, Karydas A, Miller BL, Boxer AL, Gestwicki JE, Arkin M, Cuervo AM, Gan L

Plasma Glial Fibrillary Acidic Protein Levels Differ Along the Spectra of Amyloid Burden and Clinical Disease Stage.

Journal of Alzheimer's disease : JAD

Asken BM, Elahi FM, La Joie R, Strom A, Staffaroni AM, Lindbergh CA, Apple AC, You M, Weiner-Light S, Brathaban N, Fernandes N, Karydas A, Wang P, Rojas JC, Boxer AL, Miller BL, Rabinovici GD, Kramer JH, Casaletto KB

Prospective longitudinal atrophy in Alzheimer's disease correlates with the intensity and topography of baseline tau-PET.

Science translational medicine

La Joie R, Visani AV, Baker SL, Brown JA, Bourakova V, Cha J, Chaudhary K, Edwards L, Iaccarino L, Janabi M, Lesman-Segev OH, Miller ZA, Perry DC, O'Neil JP, Pham J, Rojas JC, Rosen HJ, Seeley WW, Tsai RM, Miller BL, Jagust WJ, Rabinovici GD

4-Repeat tau seeds and templating subtypes as brain and CSF biomarkers of frontotemporal lobar degeneration.

Acta neuropathologica

Saijo E, Metrick MA, Koga S, Parchi P, Litvan I, Spina S, Boxer A, Rojas JC, Galasko D, Kraus A, Rossi M, Newell K, Zanusso G, Grinberg LT, Seeley WW, Ghetti B, Dickson DW, Caughey B

Peripheral Innate Immune Activation Correlates With Disease Severity in GRN Haploinsufficiency.

Frontiers in neurology

Ljubenkov PA, Miller Z, Mumford P, Zhang J, Allen IE, Mitic L, Staffaroni A, Heuer H, Rojas JC, Cobigo Y, Karydas A, Pearlman R, Miller B, Kramer JH, McGrath MS, Rosen HJ, Boxer AL

Diagnostic Value of Cerebrospinal Fluid Neurofilament Light Protein in Neurology: A Systematic Review and Meta-analysis.

JAMA neurology

Bridel C, van Wieringen WN, Zetterberg H, Tijms BM, Teunissen CE, Alvarez-Cermeño JC, Andreasson U, Axelsson M, Bäckström DC, Bartos A, Bjerke M, Blennow K, Boxer A, Brundin L, Burman J, Christensen T, Fialová L, Forsgren L, Frederiksen JL, Gisslén M, Gray E, Gunnarsson M, Hall S, Hansson O, Herbert MK, Jakobsson J, Jessen-Krut J, Janelidze S, Johannsson G, Jonsson M, Kappos L, Khademi M, Khalil M, Kuhle J, Landén M, Leinonen V, Logroscino G, Lu CH, Lycke J, Magdalinou NK, Malaspina A, Mattsson N, Meeter LH, Mehta SR, Modvig S, Olsson T, Paterson RW, Pérez-Santiago J, Piehl F, Pijnenburg YAL, Pyykkö OT, Ragnarsson O, Rojas JC, Romme Christensen J, Sandberg L, Scherling CS, Schott JM, Sellebjerg FT, Simone IL, Skillbäck T, Stilund M, Sundström P, Svenningsson A, Tortelli R, Tortorella C, Trentini A, Troiano M, Turner MR, van Swieten JC, Vågberg M, Verbeek MM, Villar LM, Visser PJ, Wallin A, Weiss A, Wikkelsø C, Wild EJ

Association of Blood and Cerebrospinal Fluid Tau Level and Other Biomarkers With Survival Time in Sporadic Creutzfeldt-Jakob Disease.

JAMA neurology

Staffaroni AM, Kramer AO, Casey M, Kang H, Rojas JC, Orrú CD, Caughey B, Allen IE, Kramer JH, Rosen HJ, Blennow K, Zetterberg H, Geschwind MD

Clinical value of cerebrospinal fluid neurofilament light chain in semantic dementia.

Journal of neurology, neurosurgery, and psychiatry

Meeter LHH, Steketee RME, Salkovic D, Vos ME, Grossman M, McMillan CT, Irwin DJ, Boxer AL, Rojas JC, Olney NT, Karydas A, Miller BL, Pijnenburg YAL, Barkhof F, Sánchez-Valle R, Lladó A, Borrego-Ecija S, Diehl-Schmid J, Grimmer T, Goldhardt O, Santillo AF, Hansson O, Vestberg S, Borroni B, Padovani A, Galimberti D, Scarpini E, Rohrer JD, Woollacott IOC, Synofzik M, Wilke C, de Mendonca A, Vandenberghe R, Benussi L, Ghidoni R, Binetti G, Niessen WJ, Papma JM, Seelaar H, Jiskoot LC, de Jong FJ, Donker Kaat L, Del Campo M, Teunissen CE, Bron EE, Van den Berg E, Van Swieten JC

Cerebrospinal fluid biomarkers predict frontotemporal dementia trajectory.

Annals of clinical and translational neurology

Ljubenkov PA, Staffaroni AM, Rojas JC, Allen IE, Wang P, Heuer H, Karydas A, Kornak J, Cobigo Y, Seeley WW, Grinberg LT, Spina S, Fagan AM, Jerome G, Knopman D, Boeve BF, Dickerson BC, Kramer J, Miller B, Boxer AL, Rosen HJ

A comparison of biofluid cytokine markers across platform technologies: Correspondence or divergence?

Cytokine

Casaletto KB, Elahi FE, Fitch R, Walters S, Fox E, Staffaroni AM, Bettcher B, Zetterberg H, Karydas A, Rojas JC, Boxer AL, Kramer JH

Poly(GP), neurofilament and grey matter deficits in C9orf72 expansion carriers.

Annals of clinical and translational neurology

Meeter LHH, Gendron TF, Sias AC, Jiskoot LC, Russo SP, Donker Kaat L, Papma JM, Panman JL, van der Ende EL, Dopper EG, Franzen S, Graff C, Boxer AL, Rosen HJ, Sanchez-Valle R, Galimberti D, Pijnenburg YAL, Benussi L, Ghidoni R, Borroni B, Laforce R, Del Campo M, Teunissen CE, van Minkelen R, Rojas JC, Coppola G, Geschwind DH, Rademakers R, Karydas AM, Öijerstedt L, Scarpini E, Binetti G, Padovani A, Cash DM, Dick KM, Bocchetta M, Miller BL, Rohrer JD, Petrucelli L, van Swieten JC, Lee SE

Multiproteinopathy, neurodegeneration and old age: a case study.

Neurocase

Rojas JC, Stephens ML, Rabinovici GD, Kramer JH, Miller BL, Seeley WW

CSF neurofilament light chain and phosphorylated tau 181 predict disease progression in PSP.

Neurology

Rojas JC, Bang J, Lobach IV, Tsai RM, Rabinovici GD, Miller BL, Boxer AL

ApoE4 markedly exacerbates tau-mediated neurodegeneration in a mouse model of tauopathy.

Nature

Shi Y, Yamada K, Liddelow SA, Smith ST, Zhao L, Luo W, Tsai RM, Spina S, Grinberg LT, Rojas JC, Gallardo G, Wang K, Roh J, Robinson G, Finn MB, Jiang H, Sullivan PM, Baufeld C, Wood MW, Sutphen C, McCue L, Xiong C, Del-Aguila JL, Morris JC, Cruchaga C

Genetic Prion Disease Caused by PRNP Q160X Mutation Presenting with an Orbitofrontal Syndrome, Cyclic Diarrhea, and Peripheral Neuropathy.

Journal of Alzheimer's disease : JAD

Fong JC, Rojas JC, Bang J, Legati A, Rankin KP, Forner S, Miller ZA, Karydas AM, Coppola G, Grouse CK, Ralph J, Miller BL, Geschwind MD

Distinct Lysosomal Network Protein Profiles in Parkinsonian Syndrome Cerebrospinal Fluid.

Journal of Parkinson's disease

Boman A, Svensson S, Boxer A, Rojas JC, Seeley WW, Karydas A, Miller B, Kågedal K, Svenningsson P

Plasma neurofilament light chain predicts progression in progressive supranuclear palsy.

Annals of clinical and translational neurology

Rojas JC, Karydas A, Bang J, Tsai RM, Blennow K, Liman V, Kramer JH, Rosen H, Miller BL, Zetterberg H, Boxer AL

Factors contributing to delay in diagnosis of Guillain-Barré syndrome and impact on clinical outcome.

Muscle & nerve

Dubey D, Kapotic M, Freeman M, Sawhney A, Rojas JC, Warnack W, Vernino S

Neuritis ossificans. Response.

Journal of neurosurgery

Kemper CM, Rojas JC, Bauserman S

Mitochondrial respiration as a target for neuroprotection and cognitive enhancement.

Biochemical pharmacology

Gonzalez-Lima F, Barksdale BR, Rojas JC

Clinical Reasoning: a woman with recurrent aphasia and visual field defects.

Neurology

Nourbakhsh B, Rojas JC, Banerjee C, Novakovic RL, Warnack W

Neurological and psychological applications of transcranial lasers and LEDs.

Biochemical pharmacology

Rojas JC, Gonzalez-Lima F

Pearls and oy-sters: acute ischemic stroke caused by atypical thrombotic thrombocytopenic purpura.

Neurology

Rojas JC, Banerjee C, Siddiqui F, Nourbakhsh B, Powell CM

Low-level light therapy improves cortical metabolic capacity and memory retention.

Journal of Alzheimer's disease : JAD

Rojas JC, Bruchey AK, Gonzalez-Lima F

Neurometabolic mechanisms for memory enhancement and neuroprotection of methylene blue.

Progress in neurobiology

Rojas JC, Bruchey AK, Gonzalez-Lima F

Low-level light therapy of the eye and brain.

Eye and brain

Rojas JC, Gonzalez-Lima F

Beneficial network effects of methylene blue in an amnestic model.

NeuroImage

Riha PD, Rojas JC, Gonzalez-Lima F

[Genetic thrombophilia and markers of endothelial activation in patients with preeclampsia].

Ginecologia y obstetricia de Mexico

Rojas JC, Luna M, Rangel-Nava H, Baños D, Collados MT

Neuritis ossificans of a cranial nerve.

Journal of neurosurgery

Kemper CM, Rojas JC, Bauserman S

In vivo low-level light therapy increases cytochrome oxidase in skeletal muscle.

Photochemistry and photobiology

Hayworth CR, Rojas JC, Padilla E, Holmes GM, Sheridan EC, Gonzalez-Lima F

Striatal neuroprotection with methylene blue.

Neuroscience

Rojas JC, Simola N, Kermath BA, Kane JR, Schallert T, Gonzalez-Lima F

Methylene blue provides behavioral and metabolic neuroprotection against optic neuropathy.

Neurotoxicity research

Rojas JC, John JM, Lee J, Gonzalez-Lima F

Neuroprotective effects of near-infrared light in an in vivo model of mitochondrial optic neuropathy.

The Journal of neuroscience : the official journal of the Society for Neuroscience

Rojas JC, Lee J, John JM, Gonzalez-Lima F

Animal model of posterior cingulate cortex hypometabolism implicated in amnestic MCI and AD.

Neurobiology of learning and memory

Riha PD, Rojas JC, Colorado RA, Gonzalez-Lima F

Transgenic mice expressing cyan fluorescent protein as a reporter strain to detect the effects of rotenone toxicity on retinal ganglion cells.

Journal of toxicology and environmental health. Part A

Hayworth CR, Rojas JC, Gonzalez-Lima F

Methylene blue prevents neurodegeneration caused by rotenone in the retina.

Neurotoxicity research

Zhang X, Rojas JC, Gonzalez-Lima F

Pharmacogenetics of oral anticoagulants.

Blood coagulation & fibrinolysis : an international journal in haemostasis and thrombosis

Rojas JC, Aguilar B, Rodríguez-Maldonado E, Collados MT

Induction of apoptosis and effect on CD20+ using rituximab on autologous peripheral blood stem cell harvests from patients with B cell lymphomas.

Stem cells and development

Borbolla-Escoboza JR, Leon MI, Collados MT, Baez E, Baltasar S, Hernández R, Rojas JC