Faculty profile

Massimiliano Orri

ResearcherPsychiatryMcGill University

This profile is built from public research funding records (CIHR, NSERC and SSHRC) and PubMed. We have not imported them from a McGill University directory, so their courses may be missing. Find their university profile.

Massimiliano Orri

Researcher

Psychiatry

Health Sciences

McGill University

Montreal, Quebec, Canada

Supervision signals

Has led research grants, which requires an independent research appointment. Ask their department whether they supervise graduate students.
71 publications in the last five years, latest in 2026.
Senior (last) author on 16 recent papers, a sign of leading a research group.
Principal investigator on 5 research grants (5 CIHR), most recently in 2025.
Supervised 5 trainees who won CIHR awards, most recently in 2025.

These signals come from public records, including CIHR, NSERC and SSHRC funding decisions. Ask the professor or the graduate program whether they are taking new students.

Academic metrics

120

Publications

Citations

h-index

Collaborators

Grants

Publications by year

Counts cover the works listed on the university profile; citation counts come from Dimensions.

Profiles and links

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Signals and details

Research

Socioeconomic Outcomes Adolescents And Youths Cannabis Use Data Science Healthcare Services Knowledge Translation Mental Health Prediction Modelling

Latest papers

Developmental Trajectories of Suicidality in Sexually Diverse and Heterosexual Adolescents: Findings From the Quebec Longitudinal Study of Child Development: Trajectoires développementales de suicidalité chez les adolescents hétérosexuels et de la diversité sexuelle : Résultats de l'Étude longitudinale sur le développement des enfants du Québec.
Canadian journal of psychiatry. Revue canadienne de psychiatrie · 2026
Adolescent suicidal distress and adult mental health: findings from a 25-year population based cohort.
European child & adolescent psychiatry · 2026
Young adult self-harm: The role of victimisation and polygenic risk in a population-based longitudinal study.
JCPP advances · 2026

All 120 publications

Latest funding

Adolescents with depression: education, employment, and health in young adulthood. The Douglas Adolescent Depression Cohort linked to longitudinal databases to ages 18-25 years.
CIHR · 2026 · Co-investigator
$761,176
Risk of premature mortality in youth with comorbid physical and mental health disorders: a nationwide register-based study
CIHR · 2025 · Supervisor
$2,000
Determining the Effect of Cannabis Use and Anxiety, Depression, and Suicidality in Adolescence Using Genetically Informed Approaches
CIHR · 2025 · Supervisor
$120,000

All 19 grants and awards

120 publications.

Developmental Trajectories of Suicidality in Sexually Diverse and Heterosexual Adolescents: Findings From the Quebec Longitudinal Study of Child Development: Trajectoires développementales de suicidalité chez les adolescents hétérosexuels et de la diversité sexuelle : Résultats de l'Étude longitudinale sur le développement des enfants du Québec.

MacNeil S, Sicotte R, Davisse-Paturet C, Chartrand E, Alexander E, Lecousy M, Girard A, Orri M, Chadi N, Ouellet-Morin I, Pullen Sansfaçon A, Iyer SN, Castellanos-Ryan N, Colman I, Juster RP, Geoffroy MC

Canadian journal of psychiatry. Revue canadienne de psychiatrie2026

DOI: 10.1177/07067437261442420 PMID: 41983935

Adolescent suicidal distress and adult mental health: findings from a 25-year population based cohort.

Civita A, Colman I, Orri M, Chartrand E, Dorais M, Spodenkiewicz M, Martinez P, Castellanos-Ryan N, Ouellet-Morin I, Côté SM, Thombs BD, Geoffroy MC

European child & adolescent psychiatry2026

DOI: 10.1007/s00787-026-03183-4 PMID: 42747516

Young adult self-harm: The role of victimisation and polygenic risk in a population-based longitudinal study.

Marzecki F, Ouellet-Morin I, Zavos HMS, Côté S, Tremblay RE, Gouin JP, Orri M, Boivin M, Geoffroy MC

JCPP advances2026

DOI: 10.1002/jcv2.70061 PMID: 42416628

Correction: A genome-wide investigation of depression among individuals with and without irritability.

St-Pierre J, Jang J, Nagy C, Fiori L, Turecki G, Dupuis J, Bhatnagar SR, Orri M

Molecular psychiatry2026Senior author

DOI: 10.1038/s41380-026-03655-8 PMID: 42185532

Mental Health Service Use in Sexually and Gender Diverse Youths and Cisgender Heterosexual Youths.

Anzarouth L, MacNeil S, Ryan NC, Martineau A, Orri M, Temcheff C, Dorais M, Girard A, Iyer SN, Colman I, Ouellet-Morin I, Chadi N, Juster RP, Geoffroy MC

JAMA network open2026

DOI: 10.1001/jamanetworkopen.2026.26797 PMID: 42599709

A genome-wide investigation of depression among individuals with and without irritability.

St-Pierre J, Jang J, Nagy C, Fiori L, Turecki G, Dupuis J, Bhatnagar SR, Orri M

Molecular psychiatry2026Senior author

DOI: 10.1038/s41380-026-03548-w PMID: 41872521

Mental health status of sexually diverse youth at age 23: Cross-sectional data from the Quebec Longitudinal Study of Child Development.

Martineau A, MacNeil S, Iyer SN, London-Nadeau K, Anzarouth L, Chartrand É, Colman I, Orri M, Chadi N, Ouellet-Morin I, Ryan NC, Sansfaçon AP, Juster RP, Geoffroy MC

Canadian journal of public health = Revue canadienne de sante publique2026

DOI: 10.17269/s41997-026-01235-5 PMID: 42484771

Cohort Profile: The Early Childhood Longitudinal Survey (ELPI), Chile.

Martínez P, Martínez V, Sotomayor López G, Rojas V, Encina J, Cociña M, Orri M

International journal of epidemiology2026Senior author

DOI: 10.1093/ije/dyag105 PMID: 42442393

Association between maternal infections during pregnancy and offspring suicide risk: A national cohort study.

Orri M, Løkkegaard ECL, Nordentoft M, Erlangsen A

Molecular psychiatry2026First author

DOI: 10.1038/s41380-025-03430-1 PMID: 41571895

Sex-specific pathways from early irritability trajectories to later suicidal ideations and behaviors: Findings from the ABCD study®.

Bellaert N, Simeone A, Zhang L, Zhuo H, Orri M, Liew Z, Tseng WL

Journal of child psychology and psychiatry, and allied disciplines2026

DOI: 10.1111/jcpp.70044 PMID: 40908153

Write to this professor

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Applying for

Paper to mentionMention their CIHR grant from 2025

Subject: Prospective PhD student: Socioeconomic Outcomes Dear Professor Orri, My name is [your name], and I am a [your current degree or role] at [your institution]. I am applying for a PhD position starting in [term and year]. I read your paper "Developmental Trajectories of Suicidality in Sexually Diverse and Heterosexual Adolescents: Findings From the Quebec Longitudinal Study of Child Development: Trajectoires développementales de suicidalité chez les adolescents hétérosexuels et de la diversité sexuelle : Résultats de l'Étude longitudinale sur le développement des enfants du Québec." (2026), and it connects closely to my own work on [your research topic]. [One or two sentences on what you did and what you learned.] I also saw your CIHR-funded project "Leveraging prediction models to optimize mental healthcare service delivery and enhance clinical practice." (2025), and I would be glad to contribute to work in that direction. Are you accepting new PhD students for [term and year]? I have attached my CV and transcripts, and I would be glad to talk at a time that suits you. Thank you for your time. Kind regards, [your name]

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Massimiliano Orri

Research

Latest papers

Latest funding

Adolescent suicidal distress and adult mental health: findings from a 25-year population based cohort.

Young adult self-harm: The role of victimisation and polygenic risk in a population-based longitudinal study.

Correction: A genome-wide investigation of depression among individuals with and without irritability.

Mental Health Service Use in Sexually and Gender Diverse Youths and Cisgender Heterosexual Youths.

A genome-wide investigation of depression among individuals with and without irritability.

Mental health status of sexually diverse youth at age 23: Cross-sectional data from the Quebec Longitudinal Study of Child Development.

Cohort Profile: The Early Childhood Longitudinal Survey (ELPI), Chile.

Association between maternal infections during pregnancy and offspring suicide risk: A national cohort study.

Sex-specific pathways from early irritability trajectories to later suicidal ideations and behaviors: Findings from the ABCD study&#xae;.

Frequent collaborators

Massimiliano Orri

Marie-Claude Geoffroy

Michel Boivin

Gustavo Turecki

Isabelle Ouellet-Morin

Isabelle Ouellet-Morin

Isabelle Ouellet-Morin

Frank Vitaro

Nicholas Chadi

Natalie Castellanos Ryan

Natalie Castellanos Ryan

Ian Colman

Richard Tremblay

Caroline Temcheff

Michel Boivin

Michel Boivin

Corina Nagy

Ridha Joober

Ridha Joober

Ashok Malla

Martin Lepage

Martin Lepage

Vincent Paquin

Jean-Philippe Gouin

Jean-Philippe Gouin

Frederick Philippe

Jeffrey Barkun

Eszter Szekely

Lise Gauvin

Kira London-Nadeau

Jean-Daniel Carrier

Roumen Milev

Tina Montreuil

Catherine Herba

Rachel Langevin

Sex-specific pathways from early irritability trajectories to later suicidal ideations and behaviors: Findings from the ABCD study®.