AntonioYHardanMD

Child & Adolescent Psychiatry

Director, Division of Child and Adolescent Psychiatry; Professor, Department of Psychiatry & Behavioral Sciences; Stanford University Medical Center

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Office
725 Welch Rd
Palo Alto, CA 94304
Phone+1 650-498-7200

Fax+1 650-497-8612
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Education & Training

UPMC Medical EducationFellowship, Child and Adolescent Psychiatry, 1993 - 1996
University of RochesterResidency, Psychiatry, 1991 - 1993
Saint Elizabeths Hospital-DC Department of Behavioral HealthInternship, Transitional Year, 1990 - 1991
St Joseph's University Medical SchoolClass of 1988

Certifications & Licensure

CA State Medical License 2005 - 2025
PA State Medical License 1993 - 2006
American Board of Psychiatry and Neurology Psychiatry
American Board of Psychiatry and Neurology Child & Adolescent Psychiatry

Clinical Trials

A Study of N-Acetyl Cysteine in Children With Autism Start of enrollment: 2008 Feb 01
Completed
Phase 2
An Open-Label Study of N-Acetyl Cysteine in Children With Autism Start of enrollment: 2008 Jun 01
Completed
Phase 2
An Evaluation of a Developmentally-Based Parent Training Program for Children With Autism Start of enrollment: 2010 Sep 01
Completed
Not Applicable
Intranasal Oxytocin Treatment for Social Deficits in Children With Autism Start of enrollment: 2012 Jun 01
Completed
Phase 2
A Study of Pregnenolone in the Treatment of Individuals With Autism Start of enrollment: 2011 Jul 01
Completed
Phase 2
Pivotal Response Group Treatment for Parents of Young Children With Autism Start of enrollment: 2010 Jul 01
Completed
Not Applicable
The Role of Vasopressin in the Social Deficits of Autism Start of enrollment: 2013 Dec 01
Completed
Phase 2
Pivotal Response Treatment for Individuals With Intellectual Disabilities Start of enrollment: 2012 Sep 11
Completed
Not Applicable
Pivotal Response Treatment Package for Young Children With Autism Start of enrollment: 2013 Dec 04
Completed
Not Applicable
Natural History Study of Individuals With Autism and Germline Heterozygous PTEN Mutations Start of enrollment: 2015 May 01
Recruiting
Pilot Trial of Pregnenolone in Autism Start of enrollment: 2016 Jan 29
Recruiting
Phase 2
RAD001 and Neurocognition in PTEN Hamartoma Tumor Syndrome Start of enrollment: 2017 Jun 12
Completed
Phase 1, Phase 2
Effectiveness of a Developmental Reciprocity Treatment Program in Autism Start of enrollment: 2017 Jul 26
Terminated
Not Applicable
A Center Based Study of Pivotal Response Treatment for Preschoolers With Autism Start of enrollment: 2019 May 13
Recruiting
Not Applicable
A Study of Esomeprazole in Children With Autism Start of enrollment: 2019 May 29
Suspended
Phase 2
A Center Based Early Intervention Program For Preschoolers With Developmental Disorders Start of enrollment: 2019 Oct 19
Recruiting
Not Applicable
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Publications & Presentations

PubMed

Exploring the neurological features of individuals with germline PTEN variants: A multicenter study.
Sarah Baitamouni, Darren Liu, Robyn Busch, Patricia Klaas, Thomas W Frazier, Mustafa Sahin, Andrew Dhawan, Siddharth Srivastava, Sumit Parikh, Gary E Hsich, Neil R Fri...> ;Annals of Clinical and Translational Neurology. 2024 Mar 19
Vasopressin deficiency: a hypothesized driver of both social impairment and fluid imbalance in autism spectrum disorder.
Lauren Clarke, Neil Gesundheit, Elliott H Sherr, Antonio Y Hardan, Karen J Parker> ;Molecular Psychiatry. 2024 Mar 7
A Pilot Randomized Controlled Trial of Motivation-Based Social Skills Group Treatment with Parent Training.
Jane Shkel, Alicia Geng, Elise Pilchak, Maria Estefania Millan, Jessica M Schwartzman, Rachel Schuck, Maria Victoria Bundang, Agatha Barnowski, Devon M Slap, Sydney St...> ;Journal of Autism and Developmental Disorders. 2024 Mar 6
Precision microbial intervention improves social behavior but not autism severity: A pilot double-blind randomized placebo-controlled trial.
Mazzone, L., Dooling, S., Volpe, E., Uljarević, M., Waters, J., Sabatini, A., Arturi, L., Abate, R., Riccioni, A., Siracusano, M., Pereira, M., Engstrand, L., Cristofo...> ;Cell Host & Microbe. 2024 Jan 10
Characterizing subdomains of insistence on sameness in autistic youth.
Emily Spackman, Luke D Smillie, Thomas W Frazier, Antonio Y Hardan, Mirko Uljarević> ;Autism Research. 2023 Dec 1
1 citations
Electronic health records identify timely trends in childhood mental health conditions.
Josephine Elia, Kathleen Pajer, Raghuram Prasad, Andres Pumariega, Mitchell Maltenfort, Levon Utidjian, Elizabeth Shenkman, Kelly Kelleher, Suchitra Rao, Peter A Margo...> ;Child and Adolescent Psychiatry and Mental Health. 2023 Sep 14
1 citations
Development of webcam-collected and artificial-intelligence-derived social and cognitive performance measures for neurodevelopmental genetic syndromes.
Thomas W Frazier, Robyn M Busch, Patricia Klaas, Katherine Lachlan, Shafali Jeste, Alexander Kolevzon, Eva Loth, Jacqueline Harris, Leslie Speer, Tom Pepper, Kristin A...> ;American Journal of Medical Genetics. Part C, Seminars in Medical Genetics. 2023 Sep 1
1 citations
Anxiety, concerns and COVID-19: Cross-country perspectives from families and individuals with neurodevelopmental conditions.
Vassilis Sideropoulos, Jo Van Herwegen, Ben Meuleman, Michael Alessandri, Faisal M Alnemary, Jamal Amani Rad, Pamela A Banta Lavenex, Nikita Bolshakov, Sven Bölte, Pau...> ;Journal of Global Health. 2023 Jul 28
A Twin Study of Altered White Matter Heritability in Youth With Autism Spectrum Disorder.
John P Hegarty 2nd, Julio C Monterrey, Qiyuan Tian, Sue C Cleveland, Xinyi Gong, Jennifer M Phillips, Olga N Wolke, Jennifer A McNab, Joachim F Hallmayer, Allan L Reis...> ;Journal of the American Academy of Child and Adolescent Psychiatry. 2024 Jan 1
2 citations
Categorical versus dimensional structure of autism spectrum disorder: A multi-method investigation.
Thomas W Frazier, Lacey Chetcuti, Fouad A Al-Shaban, Nick Haslam, Iman Ghazal, Eric W Klingemier, Mohammed Aldosari, Andrew J O Whitehouse, Eric A Youngstrom, Antonio ...> ;JCPP Advances. 2023 Jun 1
1 citations
Reliability of the Commonly Used and Newly-Developed Autism Measures.
Thomas W Frazier, Andrew J O Whitehouse, Susan R Leekam, Sarah J Carrington, Gail A Alvares, David W Evans, Antonio Y Hardan, Mirko Uljarević> ;Journal of Autism and Developmental Disorders. 2023 Apr 5
1 citations
Characterizing restricted and unusual interests in autistic youth.
Emily Spackman, Luke D Smillie, Thomas W Frazier, Antonio Y Hardan, Gail A Alvares, Andrew Whitehouse, Mirko Uljarević> ;Autism Research. 2023 Feb 1
2 citations
Longitudinal neurobehavioral profiles in children and young adults with PTEN hamartoma tumor syndrome and reliable methods for assessing neurobehavioral change.
Robyn M Busch, Thomas W Frazier Ii, Claire Sonneborn, Olivia Hogue, Patricia Klaas, Siddharth Srivastava, Antonio Y Hardan, Julian A Martinez-Agosto, Charis Eng, Sahin...> ;Journal of Neurodevelopmental Disorders. 2023 Jan 14
5 citations
The Autism Symptom Dimensions Questionnaire: Development and psychometric evaluation of a new, open-source measure of autism symptomatology.
Thomas W Frazier, Anastasia Dimitropoulos, Leonard Abbeduto, Melissa Armstrong-Brine, Shanna Kralovic, Andy Shih, Antonio Y Hardan, Eric A Youngstrom, Mirko Uljarević> ;Developmental Medicine and Child Neurology. 2023 Aug 1
1 citations
Maladaptive behaviors in children with autism and parental hopelessness: The moderating role of parental reflective functioning.
Yael Enav, Marguerite V Knudtson, Antonio Y Hardan, James J Gross> ;Autism Research. 2023 Jan 1
2 citations
Profiles of circumscribed interests in autistic youth.
Emily Spackman, Luke D Smillie, Thomas W Frazier, Antonio Y Hardan, Gail A Alvares, Andrew Whitehouse, Mirko Uljarević> ;Frontiers in Behavioral Neuroscience. 2023 Jan 1
9 citations
Dimensional Assessment of Restricted and Repetitive Behaviors: Development and Preliminary Validation of a New Measure.
Mirko Uljarević, Thomas W Frazier, Booil Jo, Lawrence Scahill, Eric A Youngstrom, Emily Spackman, Jennifer M Phillips, Wesley Billingham, Antonio Hardan> ;Journal of the American Academy of Child and Adolescent Psychiatry. 2023 May 1
3 citations
Sleep architecture is associated with core symptom severity in autism spectrum disorder.
Makoto Kawai, Casey Buck, Christina F Chick, Lauren Anker, Lisa Talbot, Logan Schneider, Omer Linkovski, Isabelle Cotto, Kai Parker-Fong, Jennifer Phillips, Antonio Y ...> ;Sleep. 2023 Mar 9
5 citations
A randomized controlled trial of everolimus for neurocognitive symptoms in PTEN hamartoma tumor syndrome.
Srivastava, S., Jo, B., Zhang, B., Frazier, T., Gallagher, A., Peck, F., Levin, A., Mondal, S., Li, Z., Filip-Dhima, R., Geisel, G., Dies, K., Diplock, A., Eng, C., Ha...> ;Human Molecular Genetics. 2022 Oct 10
1 citations
Understanding the heterogeneity of anxiety in autistic youth: A person-centered approach.
Emily Spackman, Jian Wei Lerh, Jacqui Rodgers, Matthew J Hollocks, Mikle South, Helen McConachie, Ann Ozsivadjian, Amy Vaughan Van Hecke, Robin Libove, Antonio Y Harda...> ;Autism Research. 2022 Sep 1
2 citations
Subdomains of restricted and repetitive behaviors within autism: Exploratory structural equation modeling using the diagnostic interview for social and communication d...
Mirko Uljarević, Sarah J Carrington, Antonio Y Hardan, Susan R Leekam> ;Autism Research. 2022 May 1
3 citations
Characterizing dermatologic findings among patients with PTEN hamartoma tumor syndrome: Results of a multicenter cohort study.
Frederick C Morgan, Lamis Yehia, Christine McDonald, Julian A Martinez-Agosto, Antonio Y Hardan, Joan Tamburro, Cheryl Bayart, Charis Eng, , Sahin, M.> ;Journal of the American Academy of Dermatology. 2023 Jul 1
2 citations
Editorial: Precision medicine approaches for heterogeneous conditions such as autism spectrum disorders (The need for a biomarker exploration phase in clinical trials ...
David Q Beversdorf, Evdokia Anagnostou, Antonio Hardan, Paul Wang, Craig A Erickson, Thomas W Frazier, Jeremy Veenstra-VanderWeele> ;Frontiers in Psychiatry. 2022 Jan 1
Daily living skills scale: Development and preliminary validation of a new, open-source assessment of daily living skills.
Mirko Uljarević, Emily K Spackman, Ru Ying Cai, Katherine J Paszek, Antonio Y Hardan, Thomas W Frazier> ;Frontiers in Psychiatry. 2022 Jan 1
2 citations
Development and validation of the Executive Functioning Scale.
Mirko Uljarević, Ru Ying Cai, Antonio Y Hardan, Thomas W Frazier> ;Frontiers in Psychiatry. 2022 Jan 1
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Press Mentions

For the First Time in the Arab World, Dubai to Host the World’s Largest Mental Health Congress for Children and AdolescentsDecember 2nd, 2022
Q&A: Stanford Psychiatrist on How COVID-Caused Isolation Has Affected Young AthletesDecember 16th, 2020
After 13 Years, Pioneering Autism Research Registry Shuts DownJuly 15th, 2019
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Grant Support

A Neuroimaging Study Of Twin Pairs With AutismNational Institute Of Mental Health2009–2012
Neuroimaging/Developmental Neurobiology Of AutismNational Institute Of Mental Health2001–2005

Hospital Affiliations

Lucile Packard Children's Hospital StanfordPalo Alto, California
Stanford Health CarePalo Alto, California
Mills-Peninsula Medical CenterBurlingame, California