Large-scale fine mapping of brain morphometry in bipolar disorder and major depression

Active Project Grant Awarded Last action

Award ID
R21MH139001
Recipient
Awarding agency
Obligated
$1,117,560

Award facts

Assistance listing
93.242 Mental Health Research Grants
Completion date 63% complete
Originally
Place of performance
Marina Del Rey, CA 90292, USA

Award details come from USAspending.gov.

Description

Abstract
Bipolar disorder (BD) is a chronic illness in which nearly half of all patients attempt suicide and no biological measures exist to reliably guide diagnosis or treatment. This project builds off 15 years of successful team science, reviving existing and independently collected neuroimaging and clinical data from around the world to create the largest studies of BD and the brain. In this new initiative from the enhancing neuro imaging genetics through meta-analysis (enigma) consortium bipolar disorder working group (enigma-BD), we will apply a recently standardized method for large-scale voxel-wise brain mapping to improve replication and generalizability BD-related brain signatures, its clinical factors, and transdiagnostic comparisons to major depressive disorder (MDD). The enigma-VBM (voxel-wise based morphometry) pipeline includes built-in voxel-wise processing, quality control, and analysis tools for both pooled mega- and federated meta-analysis. Whereas most prior enigma studies have used region of interest measures in which local brain variations are averaged across parcels of the brain defined by anatomical atlas, enigma-VBM quantifies whole-brain, atlas-free variations at the voxel level. This new direction allows for focal mapping across the entire brain, including frequently omitted structures such as the cerebellum. Aim 1 will compute enigma-VBM measures across a target sample of 3,500 BD and 8,500 healthy controls, and analyze focal morphometric patterns associated with BD diagnostic subtypes, illness severity, polypharmaceutical treatment effects, and other important clinical factors such as age, SEX, age of onset, and comorbid substance abuse. Aim 2 will derive VBM features from the enigma-major depressive disorder working group (enigma-MDD) and identify overlapping and distinct voxel-wise patterns across the largest samples of BD and MDD ever studied (n=22,500). Interactions between transdiagnostic brain variations and key clinical factors such as age of onset, duration/severity of illness, number of overlapping/distinct mood episodes, and pharmaceutical treatment will be assessed. The project represents a new phase of the enigma consortium and will create a novel set of atlas-free brain phenotypes to empower the largest transdiagnostic neuroimaging studies of BD, MDD and beyond.

Transactions

Action Obligated Date
Amendment $0
Amendment $60,342
Amendment $60,342
Amendment $86,324
Amendment $86,324
Amendment $86,324
Amendment $184,476
Amendment $184,476
Amendment $184,476
Original award $184,476

Subawards

Subrecipient Amount Awarded
King's College London Large-scale fine mapping of brain morphometry in bipolar disorder and major depression $60,342

Quick answers

Who received award R21MH139001?

R21MH139001 was awarded to University Of Southern California by National Institute of Mental Health (National Institutes of Health) on December 1, 2024.

How much is award R21MH139001 worth?

$1,117,560 has been obligated on R21MH139001.

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