AllenDavidRadantMD

Psychiatry • Seattle, WA

Geriatric Psychiatry

Associate Professor, Psychiatry & Behavioral Sciences, University of Washington School of Medicine

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Office
1660 South Columbian Way
Mhc-116a Seattle Va Hospital,
Seattle, WA 98108
Phone+1 206-277-1761
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Education & Training

University of WashingtonResidency, Psychiatry, 1984 - 1988
University of California, Davis, School of MedicineClass of 1985

Certifications & Licensure

WA State Medical License 1987 - 2025
American Board of Psychiatry and Neurology Psychiatry

Publications & Presentations

PubMed

5 citations
Sensitivity of Schizophrenia Endophenotype Biomarkers to Anticholinergic Medication Burden.
Yash B Joshi, Juan L Molina, David L Braff, Michael F Green, Ruben C Gur, Raquel E Gur, Keith H Nuechterlein, William S Stone, Tiffany A Greenwood, Laura C Lazzeroni, ...> ;The American Journal of Psychiatry. 2023 Jul 1
705 citations
Mapping genomic loci implicates genes and synaptic biology in schizophrenia.
Trubetskoy, V., Pardiñas, A., Qi, T., Panagiotaropoulou, G., Awasthi, S., Bigdeli, T., Bryois, J., Chen, C., Dennison, C., Hall, L., Lam, M., Watanabe, K., Frei, O., G...> ;Nature. 2022 Apr 1
62 citations
Anticholinergic Medication Burden-Associated Cognitive Impairment in Schizophrenia.
Yash B. Joshi, Michael L. Thomas, David L. Braff, Michael F. Green, Ruben C. Gur, Raquel E. Gur, Keith H. Nuechterlein, William S. Stone, Tiffany A. Greenwood, Laura C...> ;The American Journal of Psychiatry. 2021 May 14
4 citations
Heritability of acoustic startle magnitude and latency from the consortium on the genetics of schizophrenia
Tiffany A. Greenwood, Neal R. Swerdlow, Joyce Sprock, Monica E. Calkins, Robert Freedman, Michael F. Green, Raquel E. Gur, Ruben C. Gur, Laura C. Lazzeroni, Gregory A....> ;Schizophrenia Research. 2020 Oct 1
18 citations
The effects of age and sex on cognitive impairment in schizophrenia: Findings from the Consortium on the Genetics of Schizophrenia (COGS) study.
Junghee Lee, Michael F. Green, Keith H. Nuechterlein, Neal R. Swerdlow, Tiffany A. Greenwood, Gerhard Hellemann, Laura C. Lazzeroni, Gregory A. Light, Allen D. Radant,...> ;Plos One. 2020 May 13
63 citations
Genome-wide Association of Endophenotypes for Schizophrenia From the Consortium on the Genetics of Schizophrenia (COGS) Study.
Tiffany A. Greenwood, Laura C. Lazzeroni, Adam X. Maihofer, Neal R. Swerdlow, Monica E. Calkins, Robert Freedman, Michael F. Green, Gregory A. Light, Caroline M. Nieve...> ;JAMA Psychiatry. 2019 Dec 1
46 citations
Deficient prepulse inhibition in schizophrenia in a multi-site cohort: Internal replication and extension.
Neal R. Swerdlow, Gregory A. Light, Michael L. Thomas, Joyce Sprock, Monica E. Calkins, Michael F. Green, Tiffany A. Greenwood, Raquel E. Gur, Ruben C. Gur, Laura C. L...> ;Schizophrenia Research. 2017 May 24
141 citations
Modeling Deficits From Early Auditory Information Processing to Psychosocial Functioning in Schizophrenia.
Michael L. Thomas, Michael F. Green, Gerhard Hellemann, Catherine A. Sugar, Melissa Tarasenko, Monica E. Calkins, Tiffany A. Greenwood, Raquel E. Gur, Ruben C. Gur, La...> ;JAMA Psychiatry. 2017 Jan 1
10 citations
Prioritizing schizophrenia endophenotypes for future genetic studies: An example using data from the COGS-1 family study
Steven P. Millard, Jane B. Shofer, David L. Braff, Monica E. Calkins, Kristin S. Cadenhead, Robert Freedman, Michael F. Green, Tiffany A. Greenwood, Raquel E. Gur, Rub...> ;Schizophrenia Research. 2016 Jul 1
37 citations
Gating Deficit Heritability and Correlation With Increased Clinical Severity in Schizophrenia Patients With Positive Family History.
Tiffany A. Greenwood, Gregory A. Light, Neal R. Swerdlow, Monica E. Calkins, Michael F. Green, Raquel E. Gur, Ruben C. Gur, Laura C. Lazzeroni, Keith H. Nuechterlein, ...> ;The American Journal of Psychiatry. 2016 Apr 1
51 citations
Genetic assessment of additional endophenotypes from the Consortium on the Genetics of Schizophrenia Family Study.
Tiffany A. Greenwood, Laura C. Lazzeroni, Monica E. Calkins, Robert Freedman, Michael F. Green, Raquel E. Gur, Ruben C. Gur, Gregory A. Light, Keith H. Nuechterlein, A...> ;Schizophrenia Research. 2016 Jan 1
128 citations
Validation of mismatch negativity and P3a for use in multi-site studies of schizophrenia: characterization of demographic, clinical, cognitive, and functional correlat...
Gregory A. Light, Neal R. Swerdlow, Michael L. Thomas, Monica E. Calkins, Michael F. Green, Tiffany A. Greenwood, Raquel E. Gur, Ruben C. Gur, Laura C. Lazzeroni, Keit...> ;Schizophrenia Research. 2015 Apr 1
13 citations
Robust differences in antisaccade performance exist between COGS schizophrenia cases and controls regardless of recruitment strategies.
Allen D. Radant, Steven P. Millard, David L. Braff, Monica E. Calkins, Dorcas J. Dobie, Robert Freedman, Michael F. Green, Tiffany A. Greenwood, Raquel E. Gur, Ruben C...> ;Schizophrenia Research. 2015 Apr 1
24 citations
Verbal Working Memory in Schizophrenia from the Consortium on the Genetics of Schizophrenia (COGS) Study: The Moderating Role of Smoking Status and Antipsychotic Medic...
Junghee Lee, Michael F. Green, Monica E. Calkins, Tiffany A. Greenwood, Raquel E. Gur, Ruben C. Gur, Laura C. Lazzeroni, Gregory A. Light, Keith H. Nuechterlein, Allen...> ;Schizophrenia Research. 2015 Apr 1
28 citations
Neurocognitive performance in family-based and case-control studies of schizophrenia
Ruben C. Gur, David L. Braff, Monica E. Calkins, Dorcas J. Dobie, Robert Freedman, Michael F. Green, Tiffany A. Greenwood, Laura C. Lazzeroni, Gregory A. Light, Keith ...> ;Schizophrenia Research. 2015 Apr 1
65 citations
The utility of P300 as a schizophrenia endophenotype and predictive biomarker: clinical and socio-demographic modulators in COGS-2.
Bruce I. Turetsky, Erich M. Dress, David L. Braff, Monica E. Calkins, Michael F. Green, Tiffany A. Greenwood, Raquel E. Gur, Ruben C. Gur, Laura C. Lazzeroni, Keith H....> ;Schizophrenia Research. 2015 Apr 1
53 citations
Attention/vigilance in schizophrenia: Performance results from a large multi-site study of the Consortium on the Genetics of Schizophrenia (COGS)
Keith H. Nuechterlein, Michael F. Green, Monica E. Calkins, Tiffany A. Greenwood, Raquel E. Gur, Ruben C. Gur, Laura C. Lazzeroni, Gregory A. Light, Allen D. Radant, L...> ;Schizophrenia Research. 2015 Apr 1
12 citations
California Verbal Learning Test-II performance in schizophrenia as a function of ascertainment strategy: comparing the first and second phases of the Consortium on the...
William S. Stone, Raquelle I. Mesholam-Gately, David L. Braff, Monica E. Calkins, Robert Freedman, Michael F. Green, Tiffany A. Greenwood, Raquel E. Gur, Ruben C. Gur,...> ;Schizophrenia Research. 2015 Apr 1
45 citations
Factor structure and heritability of endophenotypes in schizophrenia: findings from the Consortium on the Genetics of Schizophrenia (COGS-1).
Larry J. Seidman, Gerhard Hellemann, Keith H. Nuechterlein, Tiffany A. Greenwood, David L. Braff, Kristin S. Cadenhead, Monica E. Calkins, Robert Freedman, Raquel E. G...> ;Schizophrenia Research. 2015 Apr 1
30 citations
Comparison of the Heritability of Schizophrenia and Endophenotypes in the COGS-1 Family Study
Gregory A. Light, Tiffany A. Greenwood, Neal R. Swerdlow, Monica E. Calkins, Robert Freedman, Michael F. Green, Raquel E. Gur, Ruben C. Gur, Laura C. Lazzeroni, Keith ...> ;Schizophrenia Bulletin. 2014 Nov 1
2 citations
Paternal age of schizophrenia probands and endophenotypic differences from unaffected siblings.
James Schmeidler, Laura C. Lazzeroni, Neal R. Swerdlow, Rui P. Ferreira, David L. Braff, Monica E. Calkins, Kristin S. Cadenhead, Robert Freedman, Michael F. Green, Ti...> ;Psychiatry Research. 2014 Sep 30
10 citations
Is There an Association between Advanced Paternal Age and Endophenotype Deficit Levels in Schizophrenia
Debby W. Tsuang, Michelle Esterberg, David L. Braff, Monica E. Calkins, Kristin S. Cadenhead, Dorcas J. Dobie, Robert Freedman, Michael F. Green, Tiffany A. Greenwood,...> ;Plos One. 2014 Feb 11
76 citations
Deficient prepulse inhibition in schizophrenia detected by the multi-site COGS
Neal R. Swerdlow, Gregory A. Light, Joyce Sprock, Monica E. Calkins, Michael F. Green, Tiffany A. Greenwood, Raquel E. Gur, Ruben C. Gur, Laura C. Lazzeroni, Keith H. ...> ;Schizophrenia Research. 2014 Feb 1
17 citations
Sex Differences in Familiality Effects on Neurocognitive Performance in Schizophrenia
Monica E. Calkins, Amrita Ray, Ruben C. Gur, Robert Freedman, Michael F. Green, Tiffany A. Greenwood, Gregory A. Light, Keith H. Nuechterlein, Ann Olincy, Allen D. Rad...> ;Biological Psychiatry. 2013 May 15
94 citations
Genome-wide linkage analyses of 12 endophenotypes for schizophrenia from the Consortium on the Genetics of Schizophrenia.
Tiffany A. Greenwood, Neal R. Swerdlow, Raquel E. Gur, Kristin S. Cadenhead, Monica E. Calkins, Dorcas J. Dobie, Robert Freedman, Michael F. Green, Ruben C. Gur, Laura...> ;The American Journal of Psychiatry. 2013 May 1
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Hospital Affiliations

Seattle VA Medical CenterSeattle, Washington