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Exploring the Genetics of Schizophrenia in Manitoba (GENES-MB)

12. juni 2026 oppdatert av: Kaarina Kowalec, University of Manitoba

Uncovering Schizophrenia Genetics Through Whole Genome Sequencing Across Manitoba

Schizophrenia is a serious mental illness that affects about 1 in 100 Canadians, shortens life expectancy, and places a large burden on individuals, families, and the healthcare system. Genetics are known to play a major role, but current research explains only part of the inherited risk because most studies have looked at only a small portion of the genome and have mainly focused on people outside Canada. This project will create the first large-scale Manitoba-based schizophrenia whole-genome sequencing database by studying 1,500 Manitobans with and without schizophrenia using both short-read and advanced long-read genome sequencing technologies. Researchers will combine genetic data with lifelong provincial health records to better understand rare genetic variants linked to schizophrenia and how genetic differences influence medication response, side effects, hospitalizations, and treatment outcomes. The study aims to fill important gaps in schizophrenia research in Canada, improve understanding of the disorder's biology, and support the development of more personalized and effective treatments for people living with schizophrenia.

Studieoversikt

Status

Har ikke rekruttert ennå

Forhold

Detaljert beskrivelse

This study aims to better understand the genetic factors involved in schizophrenia by collecting saliva samples from people with schizophrenia and individuals without psychiatric disorders across Manitoba. Researchers will use advanced genome sequencing to examine differences in genetic variation and identify genes that may contribute to schizophrenia. By combining genetic information with health and clinical data, this research will help improve our understanding of schizophrenia and support the development of more personalized approaches to treatment and care. People with schizophrenia (cases) will be recruited through participating psychosis clinics in Manitoba, review and sign a consent form, provide a saliva sample for genetic testing, allow researchers to use information already collected through the Manitoba Psychosis Registry and link it with health records. People without schizophrenia or other major psychiatric disorders (screened controls) will be screened to ensure they meet eligibility requirements, review and sign a consent form, complete questionnaires about their health, quality of life, and life experiences, provide a saliva sample for genetic testing, allow researchers to link their genetic information with health records. Objective: To understand how genes contribute to schizophrenia and psychosis by analyzing DNA samples from people with and without these conditions. Endpoints: Collection of DNA samples, identification of genetic differences associated with schizophrenia and psychosis, and understanding how these genetic factors relate to symptoms, health outcomes, and disease risk.

Studietype

Observasjonsmessig

Registrering (Antatt)

1500

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiekontakt

Navn: Kaarina Kowalec, PhD
Telefonnummer: 204-619-5711
E-post: kaarina.kowalec@umanitoba.ca

Studiesteder

Canada
- Manitoba
  - Winnipeg, Manitoba, Canada, R3E0T5
    - University of Manitoba
    - Ta kontakt med:
      
      Danielle Perera, MSc
      
      Telefonnummer: 204-789-3380
      
      E-post: mb.pr@umanitoba.ca

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

Voksen
Eldre voksen

Tar imot friske frivillige

Prøvetakingsmetode

Ikke-sannsynlighetsprøve

Studiepopulasjon

The schizophrenia study population will consist of Manitoba residents aged 18 years and older with a clinical diagnosis of schizophrenia according to DSM-5 criteria. Participants will be recruited from the MPR, including individuals receiving care through the Early Psychosis Prevention and Intervention Service (EPPIS), Schizophrenia Treatment and Education Program (STEP), Program of Assertive Community Treatment (PACT), and Assertive Community Treatment/Flexible Assertive Community Treatment (ACT/FACT) teams. Eligible participants must be enrolled in the MPR and provide informed consent to participate in the genetic sub-study. Participants will provide saliva samples for DNA extraction and whole genome sequencing, and their genetic data will be linked with clinical, questionnaire, and provincial administrative health data to support research on the genetic basis of schizophrenia and related health outcomes.

Beskrivelse

Inclusion Criteria:

Individuals aged 18 years and older,
Reside in Manitoba,
Involved in the EPPIS, STEP, PACT, ACT/FACTT clinics,
Clinical diagnosis of schizophrenia using standard DSM-5 criteria,
Previously consented and enrolled in the MPR.

Exclusion Criteria:

There are no specific exclusion criteria beyond meeting the inclusion criteria or not providing informed consent.

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

Antall grupper / kohorter

Kohorter og intervensjoner

Gruppe / Kohort
Schizophrenia (cases) The schizophrenia case group will consist of Manitoba residents aged 18 years and older who have a clinical diagnosis of schizophrenia based on standard DSM-5 criteria and who are already enrolled in the Manitoba Psychosis Registry (MPR). Participants will be recruited through psychosis-focused clinical programs in Manitoba, including the Early Psychosis Prevention and Intervention Service (EPPIS), Schizophrenia Treatment and Education Program (STEP), Program of Assertive Community Treatment (PACT), and Assertive Community Treatment/Flexible Assertive Community Treatment (ACT/FACT) teams. Cases will provide saliva samples for DNA extraction and whole genome sequencing, and genetic data will be linked with clinical information, questionnaire data, and provincial health administrative data to investigate the genetic basis of schizophrenia and related health outcomes.
Control (screened) The screened control group will consist of Manitoba residents aged 40 years and older who have no known history of psychiatric disorders. Potential controls will be identified through the Manitoba Population Research Data Repository and recruited by invitation. Individuals will be excluded if they have had contact with a psychiatric specialist or have a history of antidepressant, lithium, mood stabilizer, or antipsychotic medication use. Participants will provide saliva samples for DNA extraction and whole genome sequencing, and their genetic data will be linked with provincial health administrative data. This group will serve as a comparison population for investigating genetic differences associated with schizophrenia.
Control (unscreened) An unscreened control group of approximately 2,500 individuals from Manitoba and Saskatchewan will be included through the PrairieGen project. These participants were sequenced using the same whole genome sequencing technologies as the study participants and represent the general Prairie population. While no psychiatric screening or health administrative data linkage will be available for this group, they will provide a population-based genetic reference to improve statistical power and enhance the generalizability of genetic findings.

Hva måler studien?

Primære resultatmål

Resultatmål	Tiltaksbeskrivelse	Tidsramme
Genetic variation associated with schizophrenia Tidsramme: through study completion, an average of 1 year	Identification of rare and common genetic variants through short-read and long-read whole genome sequencing. Comparison of genetic variant burden between schizophrenia cases and controls.	through study completion, an average of 1 year
Rare variant burden in schizophrenia Tidsramme: through study completion, an average of 1 year	Evaluation of the frequency and distribution of rare genetic variants in individuals with schizophrenia compared with controls.	through study completion, an average of 1 year
Pharmacogenetic associations Tidsramme: through study completion, an average of 1 year	Identification of genetic variants associated with antipsychotic treatment response and adverse drug reactions.	through study completion, an average of 1 year

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

University of Manitoba

Samarbeidspartnere

Canadian Institutes of Health Research (CIHR)

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Antatt)

1. august 2026

Primær fullføring (Antatt)

1. april 2031

Studiet fullført (Antatt)

1. april 2031

Datoer for studieregistrering

Først innsendt

5. juni 2026

Først innsendt som oppfylte QC-kriteriene

12. juni 2026

Først lagt ut (Faktiske)

18. juni 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)